upload version v2.0.0

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/iar_v8.2/AT32F415xC.icf

@@ -0,0 +1,30 @@
+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08004000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08004000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x0803FFFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x20007FFF;
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x1000;
+define symbol __ICFEDIT_size_heap__   = 0x1000;
+/**** End of ICF editor section. ###ICF###*/
+
+define memory mem with size = 4G;
+define region ROM_region   = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region   = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite,
+                        block CSTACK, block HEAP };

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/iar_v8.2/app_led3_toggle.eww

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<workspace>
+    <project>
+        <path>$WS_DIR$\app_led3_toggle.ewp</path>
+    </project>
+    <batchBuild>
+        <batchDefinition>
+            <name>all</name>
+            <member>
+                <project>app_led3_toggle</project>
+                <configuration>at_start_f403a</configuration>
+            </member>
+            <member>
+                <project>app_led3_toggle</project>
+                <configuration>at_start_f407</configuration>
+            </member>
+        </batchDefinition>
+    </batchBuild>
+</workspace>

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/inc/at32f415_clock.h

@@ -0,0 +1,46 @@
+/**
+  **************************************************************************
+  * @file     at32f415_clock.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    header file of clock program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_CLOCK_H
+#define __AT32F415_CLOCK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415.h"
+
+/* exported functions ------------------------------------------------------- */
+void system_clock_config(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT32F415_CLOCK_H */
+

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/inc/at32f415_conf.h

@@ -0,0 +1,146 @@
+/**
+  **************************************************************************
+  * @file     at32f415_conf.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    at32f415 config header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_CONF_H
+#define __AT32F415_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief in the following line adjust the value of high speed exernal crystal (hext)
+  * used in your application
+  * tip: to avoid modifying this file each time you need to use different hext, you
+  *      can define the hext value in your toolchain compiler preprocessor.
+  */
+#if !defined  HEXT_VALUE
+#define HEXT_VALUE               ((uint32_t)8000000) /*!< value of the high speed exernal crystal in hz */
+#endif
+
+/**
+  * @brief in the following line adjust the high speed exernal crystal (hext) startup
+  * timeout value
+  */
+#define HEXT_STARTUP_TIMEOUT     ((uint16_t)0x3000) /*!< time out for hext start up */
+#define HICK_VALUE               ((uint32_t)8000000) /*!< value of the high speed internal clock in hz */
+
+/* module define -------------------------------------------------------------*/
+#define CRM_MODULE_ENABLED
+#define CMP_MODULE_ENABLED
+#define TMR_MODULE_ENABLED
+#define ERTC_MODULE_ENABLED
+#define GPIO_MODULE_ENABLED
+#define I2C_MODULE_ENABLED
+#define USART_MODULE_ENABLED
+#define PWC_MODULE_ENABLED
+#define CAN_MODULE_ENABLED
+#define ADC_MODULE_ENABLED
+#define SPI_MODULE_ENABLED
+#define DMA_MODULE_ENABLED
+#define DEBUG_MODULE_ENABLED
+#define FLASH_MODULE_ENABLED
+#define CRC_MODULE_ENABLED
+#define WWDT_MODULE_ENABLED
+#define WDT_MODULE_ENABLED
+#define EXINT_MODULE_ENABLED
+#define SDIO_MODULE_ENABLED
+#define USB_MODULE_ENABLED
+#define MISC_MODULE_ENABLED
+
+/* includes ------------------------------------------------------------------*/
+#ifdef CRM_MODULE_ENABLED
+#include "at32f415_crm.h"
+#endif
+#ifdef CMP_MODULE_ENABLED
+#include "at32f415_cmp.h"
+#endif
+#ifdef TMR_MODULE_ENABLED
+#include "at32f415_tmr.h"
+#endif
+#ifdef ERTC_MODULE_ENABLED
+#include "at32f415_ertc.h"
+#endif
+#ifdef GPIO_MODULE_ENABLED
+#include "at32f415_gpio.h"
+#endif
+#ifdef I2C_MODULE_ENABLED
+#include "at32f415_i2c.h"
+#endif
+#ifdef USART_MODULE_ENABLED
+#include "at32f415_usart.h"
+#endif
+#ifdef PWC_MODULE_ENABLED
+#include "at32f415_pwc.h"
+#endif
+#ifdef CAN_MODULE_ENABLED
+#include "at32f415_can.h"
+#endif
+#ifdef ADC_MODULE_ENABLED
+#include "at32f415_adc.h"
+#endif
+#ifdef SPI_MODULE_ENABLED
+#include "at32f415_spi.h"
+#endif
+#ifdef DMA_MODULE_ENABLED
+#include "at32f415_dma.h"
+#endif
+#ifdef DEBUG_MODULE_ENABLED
+#include "at32f415_debug.h"
+#endif
+#ifdef FLASH_MODULE_ENABLED
+#include "at32f415_flash.h"
+#endif
+#ifdef CRC_MODULE_ENABLED
+#include "at32f415_crc.h"
+#endif
+#ifdef WWDT_MODULE_ENABLED
+#include "at32f415_wwdt.h"
+#endif
+#ifdef WDT_MODULE_ENABLED
+#include "at32f415_wdt.h"
+#endif
+#ifdef EXINT_MODULE_ENABLED
+#include "at32f415_exint.h"
+#endif
+#ifdef SDIO_MODULE_ENABLED
+#include "at32f415_sdio.h"
+#endif
+#ifdef MISC_MODULE_ENABLED
+#include "at32f415_misc.h"
+#endif
+#ifdef USB_MODULE_ENABLED
+#include "at32f415_usb.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT32F415_CONF_H */
+
+

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/inc/at32f415_int.h

@@ -0,0 +1,58 @@
+/**
+  **************************************************************************
+  * @file     at32f415_int.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    header file of main interrupt service routines.
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_INT_H
+#define __AT32F415_INT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415.h"
+
+/* exported types ------------------------------------------------------------*/
+/* exported constants --------------------------------------------------------*/
+/* exported macro ------------------------------------------------------------*/
+/* exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/inc/iap.h

@@ -0,0 +1,85 @@
+/**
+  **************************************************************************
+  * @file     iap.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    iap header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#ifndef __IAP_H__
+#define __IAP_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/** @defgroup app_led3_definition
+  * @{
+  */
+
+/* app starting address */
+#define APP_START_ADDR          0x08004000    
+
+/* the previous sector of app starting address is iap upgrade flag */
+#define IAP_UPGRADE_FLAG_ADDR    (APP_START_ADDR - 0x800)    
+
+/* when app received cmd 0x5aa5 from pc-tool, will set up the flag, 
+indicates that an app upgrade will follow, see iap application note for more details */
+#define IAP_UPGRADE_FLAG         0x41544B38              
+
+/**
+  * @}
+  */
+
+/** @defgroup app_led3_exported_functions
+  * @{
+  */
+
+void iap_command_handle(void);
+void iap_init(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/inc/tmr.h

@@ -0,0 +1,66 @@
+/**
+  **************************************************************************
+  * @file     tmr.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    tmr header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+ 
+#ifndef __TMR_H
+#define __TMR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/** @defgroup app_led3_exported_functions
+  * @{
+  */
+
+void tmr_init(void);
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/inc/usart.h

@@ -0,0 +1,85 @@
+/**
+  **************************************************************************
+  * @file     usart.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    usart header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#ifndef __USART_H
+#define __USART_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+extern uint8_t iap_flag;
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/** @defgroup app_led3_definition
+  * @{
+  */
+
+#define IAP_REV_FLAG_NO     0
+#define IAP_REV_FLAG_5A     1
+#define IAP_REV_FLAG_DONE   2
+#define IAP_REV_FLAG_ERROR  3
+
+/**
+  * @}
+  */
+
+/** @defgroup app_led3_exported_functions
+  * @{
+  */
+
+void uart_init(uint32_t baudrate);
+void back_ok(void);
+void back_err(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/mdk_v5/app_led3_toggle.uvoptx

@@ -0,0 +1,404 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_optx.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj; *.o</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+    <nMigrate>0</nMigrate>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>app_led3_toggle</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>12000000</CLKADS>
+      <OPTTT>
+        <gFlags>0</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>0</RunSim>
+        <RunTarget>1</RunTarget>
+        <RunAbUc>0</RunAbUc>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\listings\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>0</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>0</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>1</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <bEvRecOn>1</bEvRecOn>
+        <bSchkAxf>0</bSchkAxf>
+        <bTchkAxf>0</bTchkAxf>
+        <nTsel>0</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F415_256 -FS08000000 -FL040000 -FP0($$Device:-AT32F415RCT7$Flash\AT32F415_256.FLM))</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
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utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/mdk_v5/app_led3_toggle.uvprojx

@@ -0,0 +1,512 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<Project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_projx.xsd">
+
+  <SchemaVersion>2.1</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Targets>
+    <Target>
+      <TargetName>app_led3_toggle</TargetName>
+      <ToolsetNumber>0x4</ToolsetNumber>
+      <ToolsetName>ARM-ADS</ToolsetName>
+      <pCCUsed>5060061::V5.06 update 1 (build 61)::ARMCC</pCCUsed>
+      <uAC6>0</uAC6>
+      <TargetOption>
+        <TargetCommonOption>
+          <Device>-AT32F415RCT7</Device>
+          <Vendor>ArteryTek</Vendor>
+          <PackID>ArteryTek.AT32F415_DFP.2.0.0</PackID>
+          <Cpu>IROM(0x08000000,0x100000) IRAM(0x20000000,0x38000) CPUTYPE("Cortex-M4") FPU2 CLOCK(12000000) ELITTLE</Cpu>
+          <FlashUtilSpec></FlashUtilSpec>
+          <StartupFile></StartupFile>
+          <FlashDriverDll>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F415_256 -FS08000000 -FL0100000 -FP0($$Device:-AT32F415RCT7$Flash\AT32F415_256.FLM))</FlashDriverDll>
+          <DeviceId>0</DeviceId>
+          <RegisterFile>$$Device:-</RegisterFile>
+          <MemoryEnv></MemoryEnv>
+          <Cmp></Cmp>
+          <Asm></Asm>
+          <Linker></Linker>
+          <OHString></OHString>
+          <InfinionOptionDll></InfinionOptionDll>
+          <SLE66CMisc></SLE66CMisc>
+          <SLE66AMisc></SLE66AMisc>
+          <SLE66LinkerMisc></SLE66LinkerMisc>
+          <SFDFile>$$Device:-AT32F415RCT7$SVD\AT32F415xx_v2.svd</SFDFile>
+          <bCustSvd>0</bCustSvd>
+          <UseEnv>0</UseEnv>
+          <BinPath></BinPath>
+          <IncludePath></IncludePath>
+          <LibPath></LibPath>
+          <RegisterFilePath>AT32F415RCT7$Device\Include\at32f40x.h\</RegisterFilePath>
+          <DBRegisterFilePath>AT32F415RCT7$Device\Include\at32f40x.h\</DBRegisterFilePath>
+          <TargetStatus>
+            <Error>0</Error>
+            <ExitCodeStop>0</ExitCodeStop>
+            <ButtonStop>0</ButtonStop>
+            <NotGenerated>0</NotGenerated>
+            <InvalidFlash>1</InvalidFlash>
+          </TargetStatus>
+          <OutputDirectory>.\objects\</OutputDirectory>
+          <OutputName>app_led3_toggle</OutputName>
+          <CreateExecutable>1</CreateExecutable>
+          <CreateLib>0</CreateLib>
+          <CreateHexFile>1</CreateHexFile>
+          <DebugInformation>1</DebugInformation>
+          <BrowseInformation>1</BrowseInformation>
+          <ListingPath>.\listings\</ListingPath>
+          <HexFormatSelection>1</HexFormatSelection>
+          <Merge32K>0</Merge32K>
+          <CreateBatchFile>0</CreateBatchFile>
+          <BeforeCompile>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopU1X>0</nStopU1X>
+            <nStopU2X>0</nStopU2X>
+          </BeforeCompile>
+          <BeforeMake>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
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+            <nStopB1X>0</nStopB1X>
+            <nStopB2X>0</nStopB2X>
+          </BeforeMake>
+          <AfterMake>
+            <RunUserProg1>1</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name>fromelf.exe --bin --output .\Listings\@L.bin !L</UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopA1X>0</nStopA1X>
+            <nStopA2X>0</nStopA2X>
+          </AfterMake>
+          <SelectedForBatchBuild>1</SelectedForBatchBuild>
+          <SVCSIdString></SVCSIdString>
+        </TargetCommonOption>
+        <CommonProperty>
+          <UseCPPCompiler>0</UseCPPCompiler>
+          <RVCTCodeConst>0</RVCTCodeConst>
+          <RVCTZI>0</RVCTZI>
+          <RVCTOtherData>0</RVCTOtherData>
+          <ModuleSelection>0</ModuleSelection>
+          <IncludeInBuild>1</IncludeInBuild>
+          <AlwaysBuild>0</AlwaysBuild>
+          <GenerateAssemblyFile>0</GenerateAssemblyFile>
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+          <PublicsOnly>0</PublicsOnly>
+          <StopOnExitCode>3</StopOnExitCode>
+          <CustomArgument></CustomArgument>
+          <IncludeLibraryModules></IncludeLibraryModules>
+          <ComprImg>1</ComprImg>
+        </CommonProperty>
+        <DllOption>
+          <SimDllName>SARMCM3.DLL</SimDllName>
+          <SimDllArguments> -REMAP -MPU</SimDllArguments>
+          <SimDlgDll>DCM.DLL</SimDlgDll>
+          <SimDlgDllArguments>-pCM4</SimDlgDllArguments>
+          <TargetDllName>SARMCM3.DLL</TargetDllName>
+          <TargetDllArguments> -MPU</TargetDllArguments>
+          <TargetDlgDll>TCM.DLL</TargetDlgDll>
+          <TargetDlgDllArguments>-pCM4</TargetDlgDllArguments>
+        </DllOption>
+        <DebugOption>
+          <OPTHX>
+            <HexSelection>1</HexSelection>
+            <HexRangeLowAddress>0</HexRangeLowAddress>
+            <HexRangeHighAddress>0</HexRangeHighAddress>
+            <HexOffset>0</HexOffset>
+            <Oh166RecLen>16</Oh166RecLen>
+          </OPTHX>
+        </DebugOption>
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+            <RunIndependent>0</RunIndependent>
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+            <DriverSelection>4096</DriverSelection>
+          </Flash1>
+          <bUseTDR>1</bUseTDR>
+          <Flash2>BIN\UL2CM3.DLL</Flash2>
+          <Flash3></Flash3>
+          <Flash4></Flash4>
+          <pFcarmOut></pFcarmOut>
+          <pFcarmGrp></pFcarmGrp>
+          <pFcArmRoot></pFcArmRoot>
+          <FcArmLst>0</FcArmLst>
+        </Utilities>
+        <TargetArmAds>
+          <ArmAdsMisc>
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+            <AdsLsxf>1</AdsLsxf>
+            <RvctClst>0</RvctClst>
+            <GenPPlst>0</GenPPlst>
+            <AdsCpuType>"Cortex-M4"</AdsCpuType>
+            <RvctDeviceName></RvctDeviceName>
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+            <RvdsCdeCp>0</RvdsCdeCp>
+            <hadIRAM2>0</hadIRAM2>
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+            <uLtcg>0</uLtcg>
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+              </OCR_RVCT5>
+              <OCR_RVCT6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT6>
+              <OCR_RVCT7>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT7>
+              <OCR_RVCT8>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT8>
+              <OCR_RVCT9>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x8000</Size>
+              </OCR_RVCT9>
+              <OCR_RVCT10>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT10>
+            </OnChipMemories>
+            <RvctStartVector></RvctStartVector>
+          </ArmAdsMisc>
+          <Cads>
+            <interw>1</interw>
+            <Optim>1</Optim>
+            <oTime>0</oTime>
+            <SplitLS>0</SplitLS>
+            <OneElfS>1</OneElfS>
+            <Strict>0</Strict>
+            <EnumInt>0</EnumInt>
+            <PlainCh>0</PlainCh>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <wLevel>2</wLevel>
+            <uThumb>0</uThumb>
+            <uSurpInc>0</uSurpInc>
+            <uC99>0</uC99>
+            <uGnu>0</uGnu>
+            <useXO>0</useXO>
+            <v6Lang>1</v6Lang>
+            <v6LangP>1</v6LangP>
+            <vShortEn>1</vShortEn>
+            <vShortWch>1</vShortWch>
+            <v6Lto>0</v6Lto>
+            <v6WtE>0</v6WtE>
+            <v6Rtti>0</v6Rtti>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define>AT32F415RCT7,USE_STDPERIPH_DRIVER,AT_START_F415_V1</Define>
+              <Undefine></Undefine>
+              <IncludePath>..\..\..\..\..\libraries\drivers\inc;..\..\..\..\..\libraries\cmsis\cm4\core_support;..\..\..\..\..\libraries\cmsis\cm4\device_support;..\inc;..\..\..\..\..\project\at32f415_board</IncludePath>
+            </VariousControls>
+          </Cads>
+          <Aads>
+            <interw>1</interw>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <thumb>0</thumb>
+            <SplitLS>0</SplitLS>
+            <SwStkChk>0</SwStkChk>
+            <NoWarn>0</NoWarn>
+            <uSurpInc>0</uSurpInc>
+            <useXO>0</useXO>
+            <ClangAsOpt>1</ClangAsOpt>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Aads>
+          <LDads>
+            <umfTarg>1</umfTarg>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <noStLib>0</noStLib>
+            <RepFail>1</RepFail>
+            <useFile>0</useFile>
+            <TextAddressRange>0x08000000</TextAddressRange>
+            <DataAddressRange>0x20000000</DataAddressRange>
+            <pXoBase></pXoBase>
+            <ScatterFile>.\Objects\at32f403a_app_led3_toggle.sct</ScatterFile>
+            <IncludeLibs></IncludeLibs>
+            <IncludeLibsPath></IncludeLibsPath>
+            <Misc></Misc>
+            <LinkerInputFile></LinkerInputFile>
+            <DisabledWarnings></DisabledWarnings>
+          </LDads>
+        </TargetArmAds>
+      </TargetOption>
+      <Groups>
+        <Group>
+          <GroupName>user</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_clock.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\at32f415_clock.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_int.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\at32f415_int.c</FilePath>
+            </File>
+            <File>
+              <FileName>iap.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\iap.c</FilePath>
+            </File>
+            <File>
+              <FileName>tmr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\tmr.c</FilePath>
+            </File>
+            <File>
+              <FileName>usart.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\usart.c</FilePath>
+            </File>
+            <File>
+              <FileName>main.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\main.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>bsp</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_board.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\project\at32f415_board\at32f415_board.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>firmware</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_crm.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_crm.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_flash.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_flash.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_gpio.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_gpio.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_usart.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_usart.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_tmr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_tmr.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_misc.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_misc.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>cmsis</GroupName>
+          <Files>
+            <File>
+              <FileName>system_at32f415.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\cmsis\cm4\device_support\system_at32f415.c</FilePath>
+            </File>
+            <File>
+              <FileName>startup_at32f415.s</FileName>
+              <FileType>2</FileType>
+              <FilePath>..\..\..\..\..\libraries\cmsis\cm4\device_support\startup\mdk\startup_at32f415.s</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>readme</GroupName>
+          <Files>
+            <File>
+              <FileName>readme.txt</FileName>
+              <FileType>5</FileType>
+              <FilePath>..\readme.txt</FilePath>
+            </File>
+          </Files>
+        </Group>
+      </Groups>
+    </Target>
+  </Targets>
+
+  <RTE>
+    <apis/>
+    <components/>
+    <files/>
+  </RTE>
+
+  <LayerInfo>
+    <Layers>
+      <Layer>
+        <LayName>&lt;Project Info&gt;</LayName>
+        <LayDesc></LayDesc>
+        <LayUrl></LayUrl>
+        <LayKeys></LayKeys>
+        <LayCat></LayCat>
+        <LayLic></LayLic>
+        <LayTarg>0</LayTarg>
+        <LayPrjMark>1</LayPrjMark>
+      </Layer>
+    </Layers>
+  </LayerInfo>
+
+</Project>

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/readme.txt

@@ -0,0 +1,13 @@
+/**
+  **************************************************************************
+  * @file     readme.txt
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    readme
+  **************************************************************************
+  */
+
+  this demo is based on the at-start board, in this demo, shows the app code
+  operating flow for at32f4xx series. led3 on the at-start board is twinkling
+  when app code is running. for more detailed information. please refer to the
+  application note document AN0001.

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/src/at32f415_clock.c

@@ -0,0 +1,99 @@
+/**
+  **************************************************************************
+  * @file     at32f415_clock.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    system clock config program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415_clock.h"
+
+/**
+  * @brief  system clock config program
+  * @note   the system clock is configured as follow:
+  *         - system clock        = hext / 2 * pll_mult
+  *         - system clock source = pll (hext)
+  *         - hext                = 8000000
+  *         - sclk                = 144000000
+  *         - ahbdiv              = 1
+  *         - ahbclk              = 144000000
+  *         - apb2div             = 2
+  *         - apb2clk             = 72000000
+  *         - apb1div             = 2
+  *         - apb1clk             = 72000000
+  *         - pll_mult            = 36
+  *         - flash_wtcyc         = 4 cycle
+  * @param  none
+  * @retval none
+  */
+void system_clock_config(void)
+{
+  /* config flash psr register */
+  flash_psr_set(FLASH_WAIT_CYCLE_4); 
+ 
+  /* reset crm */
+  crm_reset();
+
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_HEXT, TRUE);
+
+  /* wait till hext is ready */
+  while(crm_hext_stable_wait() == ERROR)
+  {
+  }
+
+  /* config pll clock resource */
+  crm_pll_config(CRM_PLL_SOURCE_HEXT_DIV, CRM_PLL_MULT_36);
+
+  /* enable pll */
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_PLL, TRUE);
+
+  /* wait till pll is ready */
+  while(crm_flag_get(CRM_PLL_STABLE_FLAG) != SET)
+  {
+  }
+
+  /* config ahbclk */
+  crm_ahb_div_set(CRM_AHB_DIV_1);
+
+  /* config apb2clk */
+  crm_apb2_div_set(CRM_APB2_DIV_2);
+
+  /* config apb1clk */
+  crm_apb1_div_set(CRM_APB1_DIV_2);
+
+  /* enable auto step mode */
+  crm_auto_step_mode_enable(TRUE);
+
+  /* select pll as system clock source */
+  crm_sysclk_switch(CRM_SCLK_PLL);
+
+  /* wait till pll is used as system clock source */
+  while(crm_sysclk_switch_status_get() != CRM_SCLK_PLL)
+  {
+  }
+
+  /* disable auto step mode */
+  crm_auto_step_mode_enable(FALSE);
+
+  /* update system_core_clock global variable */
+  system_core_clock_update();
+}

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/src/at32f415_int.c

@@ -0,0 +1,141 @@
+/**
+  **************************************************************************
+  * @file     at32f415_int.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    main interrupt service routines.
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415_int.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/**
+  * @brief  this function handles nmi exception.
+  * @param  none
+  * @retval none
+  */
+void NMI_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles hard fault exception.
+  * @param  none
+  * @retval none
+  */
+void HardFault_Handler(void)
+{
+  /* go to infinite loop when hard fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles memory manage exception.
+  * @param  none
+  * @retval none
+  */
+void MemManage_Handler(void)
+{
+  /* go to infinite loop when memory manage exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles bus fault exception.
+  * @param  none
+  * @retval none
+  */
+void BusFault_Handler(void)
+{
+  /* go to infinite loop when bus fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles usage fault exception.
+  * @param  none
+  * @retval none
+  */
+void UsageFault_Handler(void)
+{
+  /* go to infinite loop when usage fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles svcall exception.
+  * @param  none
+  * @retval none
+  */
+void SVC_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles debug monitor exception.
+  * @param  none
+  * @retval none
+  */
+void DebugMon_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles pendsv_handler exception.
+  * @param  none
+  * @retval none
+  */
+void PendSV_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles systick handler.
+  * @param  none
+  * @retval none
+  */
+void SysTick_Handler(void)
+{
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/src/iap.c

@@ -0,0 +1,77 @@
+/**
+  **************************************************************************
+  * @file     iap.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    iap program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "iap.h"
+#include "usart.h"
+#include "tmr.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/**
+  * @brief  iap command handle handle.
+  * @param  none
+  * @retval none
+  */
+void iap_command_handle(void)
+{
+  if(iap_flag==IAP_REV_FLAG_DONE)
+  {
+    flash_unlock();
+    flash_sector_erase(IAP_UPGRADE_FLAG_ADDR);
+    flash_word_program(IAP_UPGRADE_FLAG_ADDR, IAP_UPGRADE_FLAG);
+    flash_lock();
+    nvic_system_reset();
+  }
+}
+
+/**
+  * @brief  iap init.
+  * @param  none
+  * @retval none
+  */
+void iap_init(void)
+{
+  if((*(uint32_t*)IAP_UPGRADE_FLAG_ADDR) == IAP_UPGRADE_FLAG)
+  {
+    flash_unlock();  
+    flash_sector_erase(IAP_UPGRADE_FLAG_ADDR);
+    flash_lock();
+  }
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/src/main.c

@@ -0,0 +1,78 @@
+/**
+  **************************************************************************
+  * @file     main.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    main program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "at32f415_board.h"
+#include "at32f415_clock.h"
+#include "tmr.h"
+#include "usart.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/**
+  * @brief  main function.
+  * @param  none
+  * @retval none
+  */
+int main(void)
+{
+  /* config vector table offset */ 
+  nvic_vector_table_set(NVIC_VECTTAB_FLASH, 0x4000);
+ 
+  /* config nvic priority group */
+  nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
+ 
+  system_clock_config();
+  at32_board_init();
+  
+  /* check and clear iap_upgrade_flag flag */
+  iap_init();
+
+  /* init usart used for app update */
+  uart_init(115200);
+  
+  /* init tmr used for show code running state(led cycle toggle) */
+  tmr_init();
+
+  while(1)
+  {
+    iap_command_handle();
+  }
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/src/tmr.c

@@ -0,0 +1,87 @@
+/**
+  **************************************************************************
+  * @file     tmr.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    tmr program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+  
+#include "at32f415_board.h"
+#include "tmr.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+/**
+  * @brief  init tmr.
+  * @param  none
+  * @retval none
+  */
+void tmr_init(void)
+{
+  crm_clocks_freq_type crm_clocks_freq_struct = {0};
+
+  crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, TRUE);
+
+  /* enable the tmr3 global interrupt */
+  nvic_irq_enable(TMR3_GLOBAL_IRQn, 1, 0);
+
+  /* get system clock */
+  crm_clocks_freq_get(&crm_clocks_freq_struct);
+
+  /* time base configuration */
+  tmr_base_init(TMR3, 10000, crm_clocks_freq_struct.ahb_freq / 10000);
+  tmr_cnt_dir_set(TMR3, TMR_COUNT_UP);  
+
+  /* overflow interrupt enable */
+  tmr_interrupt_enable(TMR3, TMR_OVF_INT, TRUE);
+
+  /* enable tmr */
+  tmr_counter_enable(TMR3, TRUE);
+}
+
+/**
+  * @brief  tmr3 global interrupt handler.
+  * @param  none
+  * @retval none
+  */
+void TMR3_GLOBAL_IRQHandler(void)
+{
+  if(tmr_flag_get(TMR3, TMR_OVF_FLAG) == SET)
+  {
+    tmr_flag_clear(TMR3, TMR_OVF_FLAG);
+    at32_led_toggle(LED3);
+  }  
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/src/usart.c

@@ -0,0 +1,134 @@
+/**
+  **************************************************************************
+  * @file     usart.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    usart program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "usart.h"
+#include "tmr.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led3_toggle
+  * @{
+  */
+
+uint8_t iap_flag = IAP_REV_FLAG_NO;
+
+/**
+  * @brief  init usart.
+  * @param  none
+  * @retval none
+  */
+void uart_init(uint32_t baudrate)
+{
+  gpio_init_type gpio_init_struct;
+  /* enable the usart and it's io clock */
+  crm_periph_clock_enable(CRM_USART1_PERIPH_CLOCK, TRUE);
+  crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+  
+  /* set default parameter */
+  gpio_default_para_init(&gpio_init_struct);
+
+  /* configure the usart1_tx  pa9 */
+  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+  gpio_init_struct.gpio_out_type  = GPIO_OUTPUT_PUSH_PULL;
+  gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+  gpio_init_struct.gpio_pins = GPIO_PINS_9;
+  gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+  gpio_init(GPIOA, &gpio_init_struct);
+
+  /* configure the usart1_rx  pa10 */
+  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+  gpio_init_struct.gpio_out_type  = GPIO_OUTPUT_PUSH_PULL;
+  gpio_init_struct.gpio_mode = GPIO_MODE_INPUT;
+  gpio_init_struct.gpio_pins = GPIO_PINS_10;
+  gpio_init_struct.gpio_pull = GPIO_PULL_UP;
+  gpio_init(GPIOA, &gpio_init_struct);
+  
+  /*configure usart nvic interrupt */
+  nvic_irq_enable(USART1_IRQn, 0, 0);
+  
+  /*configure usart param*/
+  usart_init(USART1, baudrate, USART_DATA_8BITS, USART_STOP_1_BIT);
+  usart_transmitter_enable(USART1, TRUE);
+  usart_receiver_enable(USART1, TRUE);
+  usart_interrupt_enable(USART1, USART_RDBF_INT, TRUE);
+  usart_enable(USART1, TRUE);
+}
+
+/**
+  * @brief  usart1 interrupt handler.
+  * @param  none
+  * @retval none
+  */
+void USART1_IRQHandler(void)
+{
+  uint16_t reval;
+  if(usart_flag_get(USART1, USART_RDBF_FLAG) != RESET)
+  {
+    reval = usart_data_receive(USART1);
+    if((reval == 0x5A) && (iap_flag == IAP_REV_FLAG_NO))
+      iap_flag = IAP_REV_FLAG_5A;
+    else if((reval == 0xA5) && (iap_flag == IAP_REV_FLAG_5A))
+      iap_flag = IAP_REV_FLAG_DONE;
+    else 
+      iap_flag = IAP_REV_FLAG_NO;
+  }
+}
+
+/**
+  * @brief  command response ok.
+  * @param  none
+  * @retval none
+  */
+void back_ok(void)
+{
+  usart_data_transmit(USART1, 0xCC);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  usart_data_transmit(USART1, 0xDD);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+}
+
+/**
+  * @brief  command response error.
+  * @param  none
+  * @retval none
+  */
+void back_err(void)
+{
+  usart_data_transmit(USART1, 0xEE);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  usart_data_transmit(USART1, 0xFF);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/inc/at32f415_clock.h

@@ -0,0 +1,46 @@
+/**
+  **************************************************************************
+  * @file     at32f415_clock.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    header file of clock program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_CLOCK_H
+#define __AT32F415_CLOCK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415.h"
+
+/* exported functions ------------------------------------------------------- */
+void system_clock_config(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT32F415_CLOCK_H */
+

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/inc/at32f415_conf.h

@@ -0,0 +1,146 @@
+/**
+  **************************************************************************
+  * @file     at32f415_conf.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    at32f415 config header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_CONF_H
+#define __AT32F415_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief in the following line adjust the value of high speed exernal crystal (hext)
+  * used in your application
+  * tip: to avoid modifying this file each time you need to use different hext, you
+  *      can define the hext value in your toolchain compiler preprocessor.
+  */
+#if !defined  HEXT_VALUE
+#define HEXT_VALUE               ((uint32_t)8000000) /*!< value of the high speed exernal crystal in hz */
+#endif
+
+/**
+  * @brief in the following line adjust the high speed exernal crystal (hext) startup
+  * timeout value
+  */
+#define HEXT_STARTUP_TIMEOUT     ((uint16_t)0x3000) /*!< time out for hext start up */
+#define HICK_VALUE               ((uint32_t)8000000) /*!< value of the high speed internal clock in hz */
+
+/* module define -------------------------------------------------------------*/
+#define CRM_MODULE_ENABLED
+#define CMP_MODULE_ENABLED
+#define TMR_MODULE_ENABLED
+#define ERTC_MODULE_ENABLED
+#define GPIO_MODULE_ENABLED
+#define I2C_MODULE_ENABLED
+#define USART_MODULE_ENABLED
+#define PWC_MODULE_ENABLED
+#define CAN_MODULE_ENABLED
+#define ADC_MODULE_ENABLED
+#define SPI_MODULE_ENABLED
+#define DMA_MODULE_ENABLED
+#define DEBUG_MODULE_ENABLED
+#define FLASH_MODULE_ENABLED
+#define CRC_MODULE_ENABLED
+#define WWDT_MODULE_ENABLED
+#define WDT_MODULE_ENABLED
+#define EXINT_MODULE_ENABLED
+#define SDIO_MODULE_ENABLED
+#define USB_MODULE_ENABLED
+#define MISC_MODULE_ENABLED
+
+/* includes ------------------------------------------------------------------*/
+#ifdef CRM_MODULE_ENABLED
+#include "at32f415_crm.h"
+#endif
+#ifdef CMP_MODULE_ENABLED
+#include "at32f415_cmp.h"
+#endif
+#ifdef TMR_MODULE_ENABLED
+#include "at32f415_tmr.h"
+#endif
+#ifdef ERTC_MODULE_ENABLED
+#include "at32f415_ertc.h"
+#endif
+#ifdef GPIO_MODULE_ENABLED
+#include "at32f415_gpio.h"
+#endif
+#ifdef I2C_MODULE_ENABLED
+#include "at32f415_i2c.h"
+#endif
+#ifdef USART_MODULE_ENABLED
+#include "at32f415_usart.h"
+#endif
+#ifdef PWC_MODULE_ENABLED
+#include "at32f415_pwc.h"
+#endif
+#ifdef CAN_MODULE_ENABLED
+#include "at32f415_can.h"
+#endif
+#ifdef ADC_MODULE_ENABLED
+#include "at32f415_adc.h"
+#endif
+#ifdef SPI_MODULE_ENABLED
+#include "at32f415_spi.h"
+#endif
+#ifdef DMA_MODULE_ENABLED
+#include "at32f415_dma.h"
+#endif
+#ifdef DEBUG_MODULE_ENABLED
+#include "at32f415_debug.h"
+#endif
+#ifdef FLASH_MODULE_ENABLED
+#include "at32f415_flash.h"
+#endif
+#ifdef CRC_MODULE_ENABLED
+#include "at32f415_crc.h"
+#endif
+#ifdef WWDT_MODULE_ENABLED
+#include "at32f415_wwdt.h"
+#endif
+#ifdef WDT_MODULE_ENABLED
+#include "at32f415_wdt.h"
+#endif
+#ifdef EXINT_MODULE_ENABLED
+#include "at32f415_exint.h"
+#endif
+#ifdef SDIO_MODULE_ENABLED
+#include "at32f415_sdio.h"
+#endif
+#ifdef MISC_MODULE_ENABLED
+#include "at32f415_misc.h"
+#endif
+#ifdef USB_MODULE_ENABLED
+#include "at32f415_usb.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT32F415_CONF_H */
+
+

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/inc/at32f415_int.h

@@ -0,0 +1,58 @@
+/**
+  **************************************************************************
+  * @file     at32f415_int.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    header file of main interrupt service routines.
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_INT_H
+#define __AT32F415_INT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415.h"
+
+/* exported types ------------------------------------------------------------*/
+/* exported constants --------------------------------------------------------*/
+/* exported macro ------------------------------------------------------------*/
+/* exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/inc/iap.h

@@ -0,0 +1,85 @@
+/**
+  **************************************************************************
+  * @file     iap.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    iap header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#ifndef __IAP_H__
+#define __IAP_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/** @defgroup app_led4_definition
+  * @{
+  */
+
+/* app starting address */
+#define APP_START_ADDR          0x08004000    
+
+/* the previous sector of app starting address is iap upgrade flag */
+#define IAP_UPGRADE_FLAG_ADDR    (APP_START_ADDR - 0x800)    
+
+/* when app received cmd 0x5aa5 from pc-tool, will set up the flag, 
+indicates that an app upgrade will follow, see iap application note for more details */
+#define IAP_UPGRADE_FLAG         0x41544B38              
+
+/**
+  * @}
+  */
+
+/** @defgroup app_led4_exported_functions
+  * @{
+  */
+
+void iap_command_handle(void);
+void iap_init(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/inc/tmr.h

@@ -0,0 +1,66 @@
+/**
+  **************************************************************************
+  * @file     tmr.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    tmr header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+ 
+#ifndef __TMR_H
+#define __TMR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/** @defgroup app_led4_exported_functions
+  * @{
+  */
+
+void tmr_init(void);
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/inc/usart.h

@@ -0,0 +1,85 @@
+/**
+  **************************************************************************
+  * @file     usart.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    usart header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#ifndef __USART_H
+#define __USART_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+extern uint8_t iap_flag;
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/** @defgroup app_led4_definition
+  * @{
+  */
+
+#define IAP_REV_FLAG_NO     0
+#define IAP_REV_FLAG_5A     1
+#define IAP_REV_FLAG_DONE   2
+#define IAP_REV_FLAG_ERROR  3
+
+/**
+  * @}
+  */
+
+/** @defgroup app_led4_exported_functions
+  * @{
+  */
+
+void uart_init(uint32_t baudrate);
+void back_ok(void);
+void back_err(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/mdk_v5/app_led4_toggle.uvoptx

@@ -0,0 +1,404 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_optx.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj; *.o</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+    <nMigrate>0</nMigrate>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>app_led4_toggle</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>12000000</CLKADS>
+      <OPTTT>
+        <gFlags>0</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>0</RunSim>
+        <RunTarget>1</RunTarget>
+        <RunAbUc>0</RunAbUc>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\listings\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
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+      </DebugOpt>
+      <TargetDriverDllRegistry>
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+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F415_256 -FS08000000 -FL040000 -FP0($$Device:-AT32F415RCT7$Flash\AT32F415_256.FLM))</Name>
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utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/mdk_v5/app_led4_toggle.uvprojx

@@ -0,0 +1,512 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<Project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_projx.xsd">
+
+  <SchemaVersion>2.1</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Targets>
+    <Target>
+      <TargetName>app_led4_toggle</TargetName>
+      <ToolsetNumber>0x4</ToolsetNumber>
+      <ToolsetName>ARM-ADS</ToolsetName>
+      <pCCUsed>5060061::V5.06 update 1 (build 61)::ARMCC</pCCUsed>
+      <uAC6>0</uAC6>
+      <TargetOption>
+        <TargetCommonOption>
+          <Device>-AT32F415RCT7</Device>
+          <Vendor>ArteryTek</Vendor>
+          <PackID>ArteryTek.AT32F415_DFP.2.0.0</PackID>
+          <Cpu>IROM(0x08000000,0x100000) IRAM(0x20000000,0x38000) CPUTYPE("Cortex-M4") FPU2 CLOCK(12000000) ELITTLE</Cpu>
+          <FlashUtilSpec></FlashUtilSpec>
+          <StartupFile></StartupFile>
+          <FlashDriverDll>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F415_256 -FS08000000 -FL0100000 -FP0($$Device:-AT32F415RCT7$Flash\AT32F415_256.FLM))</FlashDriverDll>
+          <DeviceId>0</DeviceId>
+          <RegisterFile>$$Device:-</RegisterFile>
+          <MemoryEnv></MemoryEnv>
+          <Cmp></Cmp>
+          <Asm></Asm>
+          <Linker></Linker>
+          <OHString></OHString>
+          <InfinionOptionDll></InfinionOptionDll>
+          <SLE66CMisc></SLE66CMisc>
+          <SLE66AMisc></SLE66AMisc>
+          <SLE66LinkerMisc></SLE66LinkerMisc>
+          <SFDFile>$$Device:-AT32F415RCT7$SVD\AT32F415xx_v2.svd</SFDFile>
+          <bCustSvd>0</bCustSvd>
+          <UseEnv>0</UseEnv>
+          <BinPath></BinPath>
+          <IncludePath></IncludePath>
+          <LibPath></LibPath>
+          <RegisterFilePath>AT32F415RCT7$Device\Include\at32f40x.h\</RegisterFilePath>
+          <DBRegisterFilePath>AT32F415RCT7$Device\Include\at32f40x.h\</DBRegisterFilePath>
+          <TargetStatus>
+            <Error>0</Error>
+            <ExitCodeStop>0</ExitCodeStop>
+            <ButtonStop>0</ButtonStop>
+            <NotGenerated>0</NotGenerated>
+            <InvalidFlash>1</InvalidFlash>
+          </TargetStatus>
+          <OutputDirectory>.\objects\</OutputDirectory>
+          <OutputName>app_led4_toggle</OutputName>
+          <CreateExecutable>1</CreateExecutable>
+          <CreateLib>0</CreateLib>
+          <CreateHexFile>1</CreateHexFile>
+          <DebugInformation>1</DebugInformation>
+          <BrowseInformation>1</BrowseInformation>
+          <ListingPath>.\listings\</ListingPath>
+          <HexFormatSelection>1</HexFormatSelection>
+          <Merge32K>0</Merge32K>
+          <CreateBatchFile>0</CreateBatchFile>
+          <BeforeCompile>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopU1X>0</nStopU1X>
+            <nStopU2X>0</nStopU2X>
+          </BeforeCompile>
+          <BeforeMake>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopB1X>0</nStopB1X>
+            <nStopB2X>0</nStopB2X>
+          </BeforeMake>
+          <AfterMake>
+            <RunUserProg1>1</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name>fromelf.exe --bin --output .\Listings\@L.bin !L</UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopA1X>0</nStopA1X>
+            <nStopA2X>0</nStopA2X>
+          </AfterMake>
+          <SelectedForBatchBuild>1</SelectedForBatchBuild>
+          <SVCSIdString></SVCSIdString>
+        </TargetCommonOption>
+        <CommonProperty>
+          <UseCPPCompiler>0</UseCPPCompiler>
+          <RVCTCodeConst>0</RVCTCodeConst>
+          <RVCTZI>0</RVCTZI>
+          <RVCTOtherData>0</RVCTOtherData>
+          <ModuleSelection>0</ModuleSelection>
+          <IncludeInBuild>1</IncludeInBuild>
+          <AlwaysBuild>0</AlwaysBuild>
+          <GenerateAssemblyFile>0</GenerateAssemblyFile>
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+          <PublicsOnly>0</PublicsOnly>
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+          <CustomArgument></CustomArgument>
+          <IncludeLibraryModules></IncludeLibraryModules>
+          <ComprImg>1</ComprImg>
+        </CommonProperty>
+        <DllOption>
+          <SimDllName>SARMCM3.DLL</SimDllName>
+          <SimDllArguments> -REMAP -MPU</SimDllArguments>
+          <SimDlgDll>DCM.DLL</SimDlgDll>
+          <SimDlgDllArguments>-pCM4</SimDlgDllArguments>
+          <TargetDllName>SARMCM3.DLL</TargetDllName>
+          <TargetDllArguments> -MPU</TargetDllArguments>
+          <TargetDlgDll>TCM.DLL</TargetDlgDll>
+          <TargetDlgDllArguments>-pCM4</TargetDlgDllArguments>
+        </DllOption>
+        <DebugOption>
+          <OPTHX>
+            <HexSelection>1</HexSelection>
+            <HexRangeLowAddress>0</HexRangeLowAddress>
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+            <HexOffset>0</HexOffset>
+            <Oh166RecLen>16</Oh166RecLen>
+          </OPTHX>
+        </DebugOption>
+        <Utilities>
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+            <UseExternalTool>0</UseExternalTool>
+            <RunIndependent>0</RunIndependent>
+            <UpdateFlashBeforeDebugging>1</UpdateFlashBeforeDebugging>
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+            <DriverSelection>4096</DriverSelection>
+          </Flash1>
+          <bUseTDR>1</bUseTDR>
+          <Flash2>BIN\UL2CM3.DLL</Flash2>
+          <Flash3></Flash3>
+          <Flash4></Flash4>
+          <pFcarmOut></pFcarmOut>
+          <pFcarmGrp></pFcarmGrp>
+          <pFcArmRoot></pFcArmRoot>
+          <FcArmLst>0</FcArmLst>
+        </Utilities>
+        <TargetArmAds>
+          <ArmAdsMisc>
+            <GenerateListings>0</GenerateListings>
+            <asHll>1</asHll>
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+            <AdsLszi>1</AdsLszi>
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+            <RvctClst>0</RvctClst>
+            <GenPPlst>0</GenPPlst>
+            <AdsCpuType>"Cortex-M4"</AdsCpuType>
+            <RvctDeviceName></RvctDeviceName>
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+            <hadIROM>1</hadIROM>
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+            <RvdsVP>0</RvdsVP>
+            <RvdsMve>0</RvdsMve>
+            <RvdsCdeCp>0</RvdsCdeCp>
+            <hadIRAM2>0</hadIRAM2>
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+            <useUlib>1</useUlib>
+            <EndSel>0</EndSel>
+            <uLtcg>0</uLtcg>
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+            <NoZi3>0</NoZi3>
+            <NoZi4>0</NoZi4>
+            <NoZi5>0</NoZi5>
+            <Ro1Chk>0</Ro1Chk>
+            <Ro2Chk>0</Ro2Chk>
+            <Ro3Chk>0</Ro3Chk>
+            <Ir1Chk>1</Ir1Chk>
+            <Ir2Chk>0</Ir2Chk>
+            <Ra1Chk>0</Ra1Chk>
+            <Ra2Chk>0</Ra2Chk>
+            <Ra3Chk>0</Ra3Chk>
+            <Im1Chk>1</Im1Chk>
+            <Im2Chk>0</Im2Chk>
+            <OnChipMemories>
+              <Ocm1>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm1>
+              <Ocm2>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm2>
+              <Ocm3>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm3>
+              <Ocm4>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm4>
+              <Ocm5>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm5>
+              <Ocm6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm6>
+              <IRAM>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x38000</Size>
+              </IRAM>
+              <IROM>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x100000</Size>
+              </IROM>
+              <XRAM>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </XRAM>
+              <OCR_RVCT1>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT1>
+              <OCR_RVCT2>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT2>
+              <OCR_RVCT3>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT3>
+              <OCR_RVCT4>
+                <Type>1</Type>
+                <StartAddress>0x8004000</StartAddress>
+                <Size>0xfc000</Size>
+              </OCR_RVCT4>
+              <OCR_RVCT5>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT5>
+              <OCR_RVCT6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT6>
+              <OCR_RVCT7>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT7>
+              <OCR_RVCT8>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT8>
+              <OCR_RVCT9>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x8000</Size>
+              </OCR_RVCT9>
+              <OCR_RVCT10>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT10>
+            </OnChipMemories>
+            <RvctStartVector></RvctStartVector>
+          </ArmAdsMisc>
+          <Cads>
+            <interw>1</interw>
+            <Optim>1</Optim>
+            <oTime>0</oTime>
+            <SplitLS>0</SplitLS>
+            <OneElfS>1</OneElfS>
+            <Strict>0</Strict>
+            <EnumInt>0</EnumInt>
+            <PlainCh>0</PlainCh>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <wLevel>2</wLevel>
+            <uThumb>0</uThumb>
+            <uSurpInc>0</uSurpInc>
+            <uC99>0</uC99>
+            <uGnu>0</uGnu>
+            <useXO>0</useXO>
+            <v6Lang>1</v6Lang>
+            <v6LangP>1</v6LangP>
+            <vShortEn>1</vShortEn>
+            <vShortWch>1</vShortWch>
+            <v6Lto>0</v6Lto>
+            <v6WtE>0</v6WtE>
+            <v6Rtti>0</v6Rtti>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define>AT32F415RCT7,USE_STDPERIPH_DRIVER,AT_START_F415_V1</Define>
+              <Undefine></Undefine>
+              <IncludePath>..\..\..\..\..\libraries\drivers\inc;..\..\..\..\..\libraries\cmsis\cm4\core_support;..\..\..\..\..\libraries\cmsis\cm4\device_support;..\inc;..\..\..\..\..\project\at32f415_board</IncludePath>
+            </VariousControls>
+          </Cads>
+          <Aads>
+            <interw>1</interw>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <thumb>0</thumb>
+            <SplitLS>0</SplitLS>
+            <SwStkChk>0</SwStkChk>
+            <NoWarn>0</NoWarn>
+            <uSurpInc>0</uSurpInc>
+            <useXO>0</useXO>
+            <ClangAsOpt>1</ClangAsOpt>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Aads>
+          <LDads>
+            <umfTarg>1</umfTarg>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <noStLib>0</noStLib>
+            <RepFail>1</RepFail>
+            <useFile>0</useFile>
+            <TextAddressRange>0x08000000</TextAddressRange>
+            <DataAddressRange>0x20000000</DataAddressRange>
+            <pXoBase></pXoBase>
+            <ScatterFile>.\Objects\at32f403a_app_led4_toggle.sct</ScatterFile>
+            <IncludeLibs></IncludeLibs>
+            <IncludeLibsPath></IncludeLibsPath>
+            <Misc></Misc>
+            <LinkerInputFile></LinkerInputFile>
+            <DisabledWarnings></DisabledWarnings>
+          </LDads>
+        </TargetArmAds>
+      </TargetOption>
+      <Groups>
+        <Group>
+          <GroupName>user</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_clock.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\at32f415_clock.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_int.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\at32f415_int.c</FilePath>
+            </File>
+            <File>
+              <FileName>iap.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\iap.c</FilePath>
+            </File>
+            <File>
+              <FileName>tmr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\tmr.c</FilePath>
+            </File>
+            <File>
+              <FileName>usart.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\usart.c</FilePath>
+            </File>
+            <File>
+              <FileName>main.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\main.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>bsp</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_board.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\project\at32f415_board\at32f415_board.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>firmware</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_crm.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_crm.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_flash.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_flash.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_gpio.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_gpio.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_usart.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_usart.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_tmr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_tmr.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_misc.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_misc.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>cmsis</GroupName>
+          <Files>
+            <File>
+              <FileName>system_at32f415.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\cmsis\cm4\device_support\system_at32f415.c</FilePath>
+            </File>
+            <File>
+              <FileName>startup_at32f415.s</FileName>
+              <FileType>2</FileType>
+              <FilePath>..\..\..\..\..\libraries\cmsis\cm4\device_support\startup\mdk\startup_at32f415.s</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>readme</GroupName>
+          <Files>
+            <File>
+              <FileName>readme.txt</FileName>
+              <FileType>5</FileType>
+              <FilePath>..\readme.txt</FilePath>
+            </File>
+          </Files>
+        </Group>
+      </Groups>
+    </Target>
+  </Targets>
+
+  <RTE>
+    <apis/>
+    <components/>
+    <files/>
+  </RTE>
+
+  <LayerInfo>
+    <Layers>
+      <Layer>
+        <LayName>&lt;Project Info&gt;</LayName>
+        <LayDesc></LayDesc>
+        <LayUrl></LayUrl>
+        <LayKeys></LayKeys>
+        <LayCat></LayCat>
+        <LayLic></LayLic>
+        <LayTarg>0</LayTarg>
+        <LayPrjMark>1</LayPrjMark>
+      </Layer>
+    </Layers>
+  </LayerInfo>
+
+</Project>

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/readme.txt

@@ -0,0 +1,13 @@
+/**
+  **************************************************************************
+  * @file     readme.txt
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    readme
+  **************************************************************************
+  */
+
+  this demo is based on the at-start board, in this demo, shows the app code
+  operating flow for at32f4xx series. led4 on the at-start board is twinkling
+  when app code is running. for more detailed information. please refer to the
+  application note document AN0001.

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/src/at32f415_clock.c

@@ -0,0 +1,99 @@
+/**
+  **************************************************************************
+  * @file     at32f415_clock.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    system clock config program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415_clock.h"
+
+/**
+  * @brief  system clock config program
+  * @note   the system clock is configured as follow:
+  *         - system clock        = hext / 2 * pll_mult
+  *         - system clock source = pll (hext)
+  *         - hext                = 8000000
+  *         - sclk                = 144000000
+  *         - ahbdiv              = 1
+  *         - ahbclk              = 144000000
+  *         - apb2div             = 2
+  *         - apb2clk             = 72000000
+  *         - apb1div             = 2
+  *         - apb1clk             = 72000000
+  *         - pll_mult            = 36
+  *         - flash_wtcyc         = 4 cycle
+  * @param  none
+  * @retval none
+  */
+void system_clock_config(void)
+{
+  /* config flash psr register */
+  flash_psr_set(FLASH_WAIT_CYCLE_4); 
+ 
+  /* reset crm */
+  crm_reset();
+
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_HEXT, TRUE);
+
+  /* wait till hext is ready */
+  while(crm_hext_stable_wait() == ERROR)
+  {
+  }
+
+  /* config pll clock resource */
+  crm_pll_config(CRM_PLL_SOURCE_HEXT_DIV, CRM_PLL_MULT_36);
+
+  /* enable pll */
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_PLL, TRUE);
+
+  /* wait till pll is ready */
+  while(crm_flag_get(CRM_PLL_STABLE_FLAG) != SET)
+  {
+  }
+
+  /* config ahbclk */
+  crm_ahb_div_set(CRM_AHB_DIV_1);
+
+  /* config apb2clk */
+  crm_apb2_div_set(CRM_APB2_DIV_2);
+
+  /* config apb1clk */
+  crm_apb1_div_set(CRM_APB1_DIV_2);
+
+  /* enable auto step mode */
+  crm_auto_step_mode_enable(TRUE);
+
+  /* select pll as system clock source */
+  crm_sysclk_switch(CRM_SCLK_PLL);
+
+  /* wait till pll is used as system clock source */
+  while(crm_sysclk_switch_status_get() != CRM_SCLK_PLL)
+  {
+  }
+
+  /* disable auto step mode */
+  crm_auto_step_mode_enable(FALSE);
+
+  /* update system_core_clock global variable */
+  system_core_clock_update();
+}

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/src/at32f415_int.c

@@ -0,0 +1,141 @@
+/**
+  **************************************************************************
+  * @file     at32f415_int.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    main interrupt service routines.
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415_int.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/**
+  * @brief  this function handles nmi exception.
+  * @param  none
+  * @retval none
+  */
+void NMI_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles hard fault exception.
+  * @param  none
+  * @retval none
+  */
+void HardFault_Handler(void)
+{
+  /* go to infinite loop when hard fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles memory manage exception.
+  * @param  none
+  * @retval none
+  */
+void MemManage_Handler(void)
+{
+  /* go to infinite loop when memory manage exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles bus fault exception.
+  * @param  none
+  * @retval none
+  */
+void BusFault_Handler(void)
+{
+  /* go to infinite loop when bus fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles usage fault exception.
+  * @param  none
+  * @retval none
+  */
+void UsageFault_Handler(void)
+{
+  /* go to infinite loop when usage fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles svcall exception.
+  * @param  none
+  * @retval none
+  */
+void SVC_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles debug monitor exception.
+  * @param  none
+  * @retval none
+  */
+void DebugMon_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles pendsv_handler exception.
+  * @param  none
+  * @retval none
+  */
+void PendSV_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles systick handler.
+  * @param  none
+  * @retval none
+  */
+void SysTick_Handler(void)
+{
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/src/iap.c

@@ -0,0 +1,77 @@
+/**
+  **************************************************************************
+  * @file     iap.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    iap program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "iap.h"
+#include "usart.h"
+#include "tmr.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/**
+  * @brief  iap command handle handle.
+  * @param  none
+  * @retval none
+  */
+void iap_command_handle(void)
+{
+  if(iap_flag==IAP_REV_FLAG_DONE)
+  {
+    flash_unlock();
+    flash_sector_erase(IAP_UPGRADE_FLAG_ADDR);
+    flash_word_program(IAP_UPGRADE_FLAG_ADDR, IAP_UPGRADE_FLAG);
+    flash_lock();
+    nvic_system_reset();
+  }
+}
+
+/**
+  * @brief  iap init.
+  * @param  none
+  * @retval none
+  */
+void iap_init(void)
+{
+  if((*(uint32_t*)IAP_UPGRADE_FLAG_ADDR) == IAP_UPGRADE_FLAG)
+  {
+    flash_unlock();  
+    flash_sector_erase(IAP_UPGRADE_FLAG_ADDR);
+    flash_lock();
+  }
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/src/main.c

@@ -0,0 +1,78 @@
+/**
+  **************************************************************************
+  * @file     main.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    main program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "at32f415_board.h"
+#include "at32f415_clock.h"
+#include "tmr.h"
+#include "usart.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/**
+  * @brief  main function.
+  * @param  none
+  * @retval none
+  */
+int main(void)
+{
+  /* config vector table offset */ 
+  nvic_vector_table_set(NVIC_VECTTAB_FLASH, 0x4000);
+ 
+  /* config nvic priority group */
+  nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
+ 
+  system_clock_config();
+  at32_board_init();
+
+  /* check and clear iap_upgrade_flag flag */
+  iap_init();
+
+  /* init usart used for app update */
+  uart_init(115200);
+  
+  /* init tmr used for show code running state(led cycle toggle) */
+  tmr_init();
+
+  while(1)
+  {
+    iap_command_handle();
+  }
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/src/tmr.c

@@ -0,0 +1,87 @@
+/**
+  **************************************************************************
+  * @file     tmr.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    tmr program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+  
+#include "at32f415_board.h"
+#include "tmr.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+/**
+  * @brief  init tmr.
+  * @param  none
+  * @retval none
+  */
+void tmr_init(void)
+{
+  crm_clocks_freq_type crm_clocks_freq_struct = {0};
+
+  crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, TRUE);
+
+  /* enable the tmr3 global interrupt */
+  nvic_irq_enable(TMR3_GLOBAL_IRQn, 1, 0);
+
+  /* get system clock */
+  crm_clocks_freq_get(&crm_clocks_freq_struct);
+
+  /* time base configuration */
+  tmr_base_init(TMR3, 10000, crm_clocks_freq_struct.ahb_freq / 10000);
+  tmr_cnt_dir_set(TMR3, TMR_COUNT_UP);  
+
+  /* overflow interrupt enable */
+  tmr_interrupt_enable(TMR3, TMR_OVF_INT, TRUE);
+
+  /* enable tmr */
+  tmr_counter_enable(TMR3, TRUE);
+}
+
+/**
+  * @brief  tmr3 global interrupt handler.
+  * @param  none
+  * @retval none
+  */
+void TMR3_GLOBAL_IRQHandler(void)
+{
+  if(tmr_flag_get(TMR3, TMR_OVF_FLAG) == SET)
+  {
+    tmr_flag_clear(TMR3, TMR_OVF_FLAG);
+    at32_led_toggle(LED4);
+  }  
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/src/usart.c

@@ -0,0 +1,134 @@
+/**
+  **************************************************************************
+  * @file     usart.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    usart program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "usart.h"
+#include "tmr.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_app_led4_toggle
+  * @{
+  */
+
+uint8_t iap_flag = IAP_REV_FLAG_NO;
+
+/**
+  * @brief  init usart.
+  * @param  none
+  * @retval none
+  */
+void uart_init(uint32_t baudrate)
+{
+  gpio_init_type gpio_init_struct;
+  /* enable the usart and it's io clock */
+  crm_periph_clock_enable(CRM_USART1_PERIPH_CLOCK, TRUE);
+  crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+  
+  /* set default parameter */
+  gpio_default_para_init(&gpio_init_struct);
+
+  /* configure the usart1_tx  pa9 */
+  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+  gpio_init_struct.gpio_out_type  = GPIO_OUTPUT_PUSH_PULL;
+  gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+  gpio_init_struct.gpio_pins = GPIO_PINS_9;
+  gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+  gpio_init(GPIOA, &gpio_init_struct);
+
+  /* configure the usart1_rx  pa10 */
+  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+  gpio_init_struct.gpio_out_type  = GPIO_OUTPUT_PUSH_PULL;
+  gpio_init_struct.gpio_mode = GPIO_MODE_INPUT;
+  gpio_init_struct.gpio_pins = GPIO_PINS_10;
+  gpio_init_struct.gpio_pull = GPIO_PULL_UP;
+  gpio_init(GPIOA, &gpio_init_struct);
+  
+  /*configure usart nvic interrupt */
+  nvic_irq_enable(USART1_IRQn, 0, 0);
+  
+  /*configure usart param*/
+  usart_init(USART1, baudrate, USART_DATA_8BITS, USART_STOP_1_BIT);
+  usart_transmitter_enable(USART1, TRUE);
+  usart_receiver_enable(USART1, TRUE);
+  usart_interrupt_enable(USART1, USART_RDBF_INT, TRUE);
+  usart_enable(USART1, TRUE);
+}
+
+/**
+  * @brief  usart1 interrupt handler.
+  * @param  none
+  * @retval none
+  */
+void USART1_IRQHandler(void)
+{
+  uint16_t reval;
+  if(usart_flag_get(USART1, USART_RDBF_FLAG) != RESET)
+  {
+    reval = usart_data_receive(USART1);
+    if((reval == 0x5A) && (iap_flag == IAP_REV_FLAG_NO))
+      iap_flag = IAP_REV_FLAG_5A;
+    else if((reval == 0xA5) && (iap_flag == IAP_REV_FLAG_5A))
+      iap_flag = IAP_REV_FLAG_DONE;
+    else 
+      iap_flag = IAP_REV_FLAG_NO;
+  }
+}
+
+/**
+  * @brief  command response ok.
+  * @param  none
+  * @retval none
+  */
+void back_ok(void)
+{
+  usart_data_transmit(USART1, 0xCC);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  usart_data_transmit(USART1, 0xDD);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+}
+
+/**
+  * @brief  command response error.
+  * @param  none
+  * @retval none
+  */
+void back_err(void)
+{
+  usart_data_transmit(USART1, 0xEE);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  usart_data_transmit(USART1, 0xFF);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/bootloader/iar_v8.2/AT32F415xC.icf

@@ -0,0 +1,30 @@
+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x08003FFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x20007FFF;
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x1000;
+define symbol __ICFEDIT_size_heap__   = 0x1000;
+/**** End of ICF editor section. ###ICF###*/
+
+define memory mem with size = 4G;
+define region ROM_region   = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region   = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite,
+                        block CSTACK, block HEAP };

utilities/at32f415_usart_iap_demo/source_code/bootloader/iar_v8.2/bootloader.eww

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<workspace>
+    <project>
+        <path>$WS_DIR$\bootloader.ewp</path>
+    </project>
+    <batchBuild>
+        <batchDefinition>
+            <name>all</name>
+            <member>
+                <project>bootloader</project>
+                <configuration>at_start_f403a</configuration>
+            </member>
+            <member>
+                <project>bootloader</project>
+                <configuration>at_start_f407</configuration>
+            </member>
+        </batchDefinition>
+    </batchBuild>
+</workspace>

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/at32f415_clock.h

@@ -0,0 +1,46 @@
+/**
+  **************************************************************************
+  * @file     at32f415_clock.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    header file of clock program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_CLOCK_H
+#define __AT32F415_CLOCK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415.h"
+
+/* exported functions ------------------------------------------------------- */
+void system_clock_config(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT32F415_CLOCK_H */
+

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/at32f415_conf.h

@@ -0,0 +1,146 @@
+/**
+  **************************************************************************
+  * @file     at32f415_conf.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    at32f415 config header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_CONF_H
+#define __AT32F415_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief in the following line adjust the value of high speed exernal crystal (hext)
+  * used in your application
+  * tip: to avoid modifying this file each time you need to use different hext, you
+  *      can define the hext value in your toolchain compiler preprocessor.
+  */
+#if !defined  HEXT_VALUE
+#define HEXT_VALUE               ((uint32_t)8000000) /*!< value of the high speed exernal crystal in hz */
+#endif
+
+/**
+  * @brief in the following line adjust the high speed exernal crystal (hext) startup
+  * timeout value
+  */
+#define HEXT_STARTUP_TIMEOUT     ((uint16_t)0x3000) /*!< time out for hext start up */
+#define HICK_VALUE               ((uint32_t)8000000) /*!< value of the high speed internal clock in hz */
+
+/* module define -------------------------------------------------------------*/
+#define CRM_MODULE_ENABLED
+#define CMP_MODULE_ENABLED
+#define TMR_MODULE_ENABLED
+#define ERTC_MODULE_ENABLED
+#define GPIO_MODULE_ENABLED
+#define I2C_MODULE_ENABLED
+#define USART_MODULE_ENABLED
+#define PWC_MODULE_ENABLED
+#define CAN_MODULE_ENABLED
+#define ADC_MODULE_ENABLED
+#define SPI_MODULE_ENABLED
+#define DMA_MODULE_ENABLED
+#define DEBUG_MODULE_ENABLED
+#define FLASH_MODULE_ENABLED
+#define CRC_MODULE_ENABLED
+#define WWDT_MODULE_ENABLED
+#define WDT_MODULE_ENABLED
+#define EXINT_MODULE_ENABLED
+#define SDIO_MODULE_ENABLED
+#define USB_MODULE_ENABLED
+#define MISC_MODULE_ENABLED
+
+/* includes ------------------------------------------------------------------*/
+#ifdef CRM_MODULE_ENABLED
+#include "at32f415_crm.h"
+#endif
+#ifdef CMP_MODULE_ENABLED
+#include "at32f415_cmp.h"
+#endif
+#ifdef TMR_MODULE_ENABLED
+#include "at32f415_tmr.h"
+#endif
+#ifdef ERTC_MODULE_ENABLED
+#include "at32f415_ertc.h"
+#endif
+#ifdef GPIO_MODULE_ENABLED
+#include "at32f415_gpio.h"
+#endif
+#ifdef I2C_MODULE_ENABLED
+#include "at32f415_i2c.h"
+#endif
+#ifdef USART_MODULE_ENABLED
+#include "at32f415_usart.h"
+#endif
+#ifdef PWC_MODULE_ENABLED
+#include "at32f415_pwc.h"
+#endif
+#ifdef CAN_MODULE_ENABLED
+#include "at32f415_can.h"
+#endif
+#ifdef ADC_MODULE_ENABLED
+#include "at32f415_adc.h"
+#endif
+#ifdef SPI_MODULE_ENABLED
+#include "at32f415_spi.h"
+#endif
+#ifdef DMA_MODULE_ENABLED
+#include "at32f415_dma.h"
+#endif
+#ifdef DEBUG_MODULE_ENABLED
+#include "at32f415_debug.h"
+#endif
+#ifdef FLASH_MODULE_ENABLED
+#include "at32f415_flash.h"
+#endif
+#ifdef CRC_MODULE_ENABLED
+#include "at32f415_crc.h"
+#endif
+#ifdef WWDT_MODULE_ENABLED
+#include "at32f415_wwdt.h"
+#endif
+#ifdef WDT_MODULE_ENABLED
+#include "at32f415_wdt.h"
+#endif
+#ifdef EXINT_MODULE_ENABLED
+#include "at32f415_exint.h"
+#endif
+#ifdef SDIO_MODULE_ENABLED
+#include "at32f415_sdio.h"
+#endif
+#ifdef MISC_MODULE_ENABLED
+#include "at32f415_misc.h"
+#endif
+#ifdef USB_MODULE_ENABLED
+#include "at32f415_usb.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AT32F415_CONF_H */
+
+

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/at32f415_int.h

@@ -0,0 +1,58 @@
+/**
+  **************************************************************************
+  * @file     at32f415_int.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    header file of main interrupt service routines.
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F415_INT_H
+#define __AT32F415_INT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415.h"
+
+/* exported types ------------------------------------------------------------*/
+/* exported constants --------------------------------------------------------*/
+/* exported macro ------------------------------------------------------------*/
+/* exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/flash.h

@@ -0,0 +1,78 @@
+/**
+  **************************************************************************
+  * @file     flash.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    flash header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+  
+#ifndef __FLASH_H__
+#define __FLASH_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/** @defgroup bootloader_definition
+  * @{
+  */
+
+#define FLASH_SIZE    (*((uint32_t*)0x1FFFF7E0))  /* read from at32 flash capacity register(unit:kbyte) */
+#define SRAM_SIZE     224                         /* sram size, unit:kbyte */
+
+/**
+  * @}
+  */
+
+/** @defgroup bootloader_exported_functions
+  * @{
+  */
+
+void flash_2kb_write(uint32_t write_addr, uint8_t *pbuffer);
+flag_status flash_upgrade_flag_read(void);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/iap.h

@@ -0,0 +1,150 @@
+/**
+  **************************************************************************
+  * @file     iap.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    iap header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to
+  * download from Artery official website is the copyrighted work of Artery.
+  * Artery authorizes customers to use, copy, and distribute the BSP
+  * software and its related documentation for the purpose of design and
+  * development in conjunction with Artery microcontrollers. Use of the
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#ifndef __IAP_H__
+#define __IAP_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/** @defgroup bootloader_definition
+  * @{
+  */
+
+/* app starting address */
+#define APP_START_ADDR          0x08004000
+
+/* the previous sector of app starting address is iap upgrade flag */
+#define IAP_UPGRADE_FLAG_ADDR    (APP_START_ADDR - 0x800)
+
+/* when app received cmd 0x5aa5 from pc-tool, will set up the flag,
+indicates that an app upgrade will follow, see iap application note for more details */
+#define IAP_UPGRADE_FLAG         0x41544B38
+
+/**
+  * @}
+  */
+
+/** @defgroup bootloader_exported_types
+  * @{
+  */
+
+/**
+  * @brief  cmd data group type
+  */
+typedef struct
+{
+  uint8_t cmd_head;
+  uint8_t cmd_addr[4];
+  uint8_t cmd_buf[0x800];
+  uint8_t cmd_check;
+} cmd_data_group_type;
+
+/**
+  * @brief  cmd data step type
+  */
+typedef enum
+{
+  CMD_DATA_IDLE,
+  CMD_DATA_ADDR,
+  CMD_DATA_BUF,
+  CMD_DATA_CHACK,
+  CMD_DATA_DONE,
+  CMD_DATA_ERR,
+} cmd_data_step_type;
+
+/**
+  * @brief  cmd ctr step type
+  */
+typedef enum
+{
+  CMD_CTR_IDLE,
+  CMD_CTR_INIT,
+  CMD_CTR_DONE,
+  CMD_CTR_ERR,
+  CMD_CTR_APP,
+} cmd_ctr_step_type;
+
+/**
+  * @brief  update status type
+  */
+typedef enum
+{
+  UPDATE_PRE,
+  UPDATE_CLEAR_FLAG,
+  UPDATE_ING,
+  UPDATE_DONE,
+} update_status_type;
+
+typedef void (*iapfun)(void);
+
+/**
+  * @}
+  */
+
+extern cmd_data_group_type cmd_data_group_type_struct;
+extern cmd_data_step_type cmd_data_step;
+extern cmd_ctr_step_type cmd_ctr_step;
+extern update_status_type update_status;
+
+/** @defgroup bootloader_exported_functions
+  * @{
+  */
+
+void command_handle(void);
+void back_err(void);
+void back_ok(void);
+void iap_upgrade_app_handle(void);
+void app_load(uint32_t appxaddr);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/tmr.h

@@ -0,0 +1,69 @@
+/**
+  **************************************************************************
+  * @file     tmr.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    tmr header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+ 
+#ifndef __TMR_H
+#define __TMR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+extern uint8_t time_ira_cnt;
+extern uint8_t get_data_from_usart_flag;
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/** @defgroup bootloader_exported_functions
+  * @{
+  */
+
+void tmr_init(void);
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/bootloader/inc/usart.h

@@ -0,0 +1,97 @@
+/**
+  **************************************************************************
+  * @file     usart.h
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    usart header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to
+  * download from Artery official website is the copyrighted work of Artery.
+  * Artery authorizes customers to use, copy, and distribute the BSP
+  * software and its related documentation for the purpose of design and
+  * development in conjunction with Artery microcontrollers. Use of the
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#ifndef __USART_H
+#define __USART_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "at32f415_board.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/** @defgroup bootloader_definition
+  * @{
+  */
+
+#define USART_REC_LEN      1024
+
+/**
+  * @}
+  */
+
+/** @defgroup bootloader_exported_types
+  * @{
+  */
+
+/**
+  * @brief  usart group type
+  */
+typedef struct
+{
+  uint16_t buf[USART_REC_LEN];
+  uint16_t head;
+  uint16_t tail;
+  uint16_t count;
+} usart_group_type;
+
+/**
+  * @}
+  */
+  
+extern usart_group_type usart_group_struct;
+
+/** @defgroup bootloader_exported_functions
+  * @{
+  */
+
+void uart_init(uint32_t baudrate);
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif

utilities/at32f415_usart_iap_demo/source_code/bootloader/mdk_v5/bootloader.uvoptx

@@ -0,0 +1,416 @@
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+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_optx.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj; *.o</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+    <nMigrate>0</nMigrate>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>bootloader</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>12000000</CLKADS>
+      <OPTTT>
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+      </OPTTT>
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+        <FlashByte>65535</FlashByte>
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+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
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+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\listings\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
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+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>0</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
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+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>1</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <bEvRecOn>1</bEvRecOn>
+        <bSchkAxf>0</bSchkAxf>
+        <bTchkAxf>0</bTchkAxf>
+        <nTsel>0</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
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+        <sIfile></sIfile>
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+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F415_256 -FS08000000 -FL040000 -FP0($$Device:-AT32F415RCT7$Flash\AT32F415_256.FLM))</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
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+        <TrcWin>0</TrcWin>
+        <newCpu>0</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
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+      <pszMrulep></pszMrulep>
+      <pSingCmdsp></pSingCmdsp>
+      <pMultCmdsp></pMultCmdsp>
+    </TargetOption>
+  </Target>
+
+  <Group>
+    <GroupName>user</GroupName>
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+
+</ProjectOpt>

utilities/at32f415_usart_iap_demo/source_code/bootloader/mdk_v5/bootloader.uvprojx

@@ -0,0 +1,517 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<Project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_projx.xsd">
+
+  <SchemaVersion>2.1</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Targets>
+    <Target>
+      <TargetName>bootloader</TargetName>
+      <ToolsetNumber>0x4</ToolsetNumber>
+      <ToolsetName>ARM-ADS</ToolsetName>
+      <pCCUsed>5060061::V5.06 update 1 (build 61)::ARMCC</pCCUsed>
+      <uAC6>0</uAC6>
+      <TargetOption>
+        <TargetCommonOption>
+          <Device>-AT32F415RCT7</Device>
+          <Vendor>ArteryTek</Vendor>
+          <PackID>ArteryTek.AT32F415_DFP.2.0.0</PackID>
+          <Cpu>IROM(0x08000000,0x100000) IRAM(0x20000000,0x38000) CPUTYPE("Cortex-M4") FPU2 CLOCK(12000000) ELITTLE</Cpu>
+          <FlashUtilSpec></FlashUtilSpec>
+          <StartupFile></StartupFile>
+          <FlashDriverDll>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F415_256 -FS08000000 -FL0100000 -FP0($$Device:-AT32F415RCT7$Flash\AT32F415_256.FLM))</FlashDriverDll>
+          <DeviceId>0</DeviceId>
+          <RegisterFile>$$Device:-</RegisterFile>
+          <MemoryEnv></MemoryEnv>
+          <Cmp></Cmp>
+          <Asm></Asm>
+          <Linker></Linker>
+          <OHString></OHString>
+          <InfinionOptionDll></InfinionOptionDll>
+          <SLE66CMisc></SLE66CMisc>
+          <SLE66AMisc></SLE66AMisc>
+          <SLE66LinkerMisc></SLE66LinkerMisc>
+          <SFDFile>$$Device:-AT32F415RCT7$SVD\AT32F415xx_v2.svd</SFDFile>
+          <bCustSvd>0</bCustSvd>
+          <UseEnv>0</UseEnv>
+          <BinPath></BinPath>
+          <IncludePath></IncludePath>
+          <LibPath></LibPath>
+          <RegisterFilePath>AT32F415RCT7$Device\Include\at32f40x.h\</RegisterFilePath>
+          <DBRegisterFilePath>AT32F415RCT7$Device\Include\at32f40x.h\</DBRegisterFilePath>
+          <TargetStatus>
+            <Error>0</Error>
+            <ExitCodeStop>0</ExitCodeStop>
+            <ButtonStop>0</ButtonStop>
+            <NotGenerated>0</NotGenerated>
+            <InvalidFlash>1</InvalidFlash>
+          </TargetStatus>
+          <OutputDirectory>.\objects\</OutputDirectory>
+          <OutputName>bootloader</OutputName>
+          <CreateExecutable>1</CreateExecutable>
+          <CreateLib>0</CreateLib>
+          <CreateHexFile>1</CreateHexFile>
+          <DebugInformation>1</DebugInformation>
+          <BrowseInformation>1</BrowseInformation>
+          <ListingPath>.\listings\</ListingPath>
+          <HexFormatSelection>1</HexFormatSelection>
+          <Merge32K>0</Merge32K>
+          <CreateBatchFile>0</CreateBatchFile>
+          <BeforeCompile>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopU1X>0</nStopU1X>
+            <nStopU2X>0</nStopU2X>
+          </BeforeCompile>
+          <BeforeMake>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopB1X>0</nStopB1X>
+            <nStopB2X>0</nStopB2X>
+          </BeforeMake>
+          <AfterMake>
+            <RunUserProg1>1</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name>fromelf.exe --bin --output .\Listings\@L.bin !L</UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopA1X>0</nStopA1X>
+            <nStopA2X>0</nStopA2X>
+          </AfterMake>
+          <SelectedForBatchBuild>1</SelectedForBatchBuild>
+          <SVCSIdString></SVCSIdString>
+        </TargetCommonOption>
+        <CommonProperty>
+          <UseCPPCompiler>0</UseCPPCompiler>
+          <RVCTCodeConst>0</RVCTCodeConst>
+          <RVCTZI>0</RVCTZI>
+          <RVCTOtherData>0</RVCTOtherData>
+          <ModuleSelection>0</ModuleSelection>
+          <IncludeInBuild>1</IncludeInBuild>
+          <AlwaysBuild>0</AlwaysBuild>
+          <GenerateAssemblyFile>0</GenerateAssemblyFile>
+          <AssembleAssemblyFile>0</AssembleAssemblyFile>
+          <PublicsOnly>0</PublicsOnly>
+          <StopOnExitCode>3</StopOnExitCode>
+          <CustomArgument></CustomArgument>
+          <IncludeLibraryModules></IncludeLibraryModules>
+          <ComprImg>1</ComprImg>
+        </CommonProperty>
+        <DllOption>
+          <SimDllName>SARMCM3.DLL</SimDllName>
+          <SimDllArguments> -REMAP -MPU</SimDllArguments>
+          <SimDlgDll>DCM.DLL</SimDlgDll>
+          <SimDlgDllArguments>-pCM4</SimDlgDllArguments>
+          <TargetDllName>SARMCM3.DLL</TargetDllName>
+          <TargetDllArguments> -MPU</TargetDllArguments>
+          <TargetDlgDll>TCM.DLL</TargetDlgDll>
+          <TargetDlgDllArguments>-pCM4</TargetDlgDllArguments>
+        </DllOption>
+        <DebugOption>
+          <OPTHX>
+            <HexSelection>1</HexSelection>
+            <HexRangeLowAddress>0</HexRangeLowAddress>
+            <HexRangeHighAddress>0</HexRangeHighAddress>
+            <HexOffset>0</HexOffset>
+            <Oh166RecLen>16</Oh166RecLen>
+          </OPTHX>
+        </DebugOption>
+        <Utilities>
+          <Flash1>
+            <UseTargetDll>1</UseTargetDll>
+            <UseExternalTool>0</UseExternalTool>
+            <RunIndependent>0</RunIndependent>
+            <UpdateFlashBeforeDebugging>1</UpdateFlashBeforeDebugging>
+            <Capability>1</Capability>
+            <DriverSelection>4096</DriverSelection>
+          </Flash1>
+          <bUseTDR>1</bUseTDR>
+          <Flash2>BIN\UL2CM3.DLL</Flash2>
+          <Flash3></Flash3>
+          <Flash4></Flash4>
+          <pFcarmOut></pFcarmOut>
+          <pFcarmGrp></pFcarmGrp>
+          <pFcArmRoot></pFcArmRoot>
+          <FcArmLst>0</FcArmLst>
+        </Utilities>
+        <TargetArmAds>
+          <ArmAdsMisc>
+            <GenerateListings>0</GenerateListings>
+            <asHll>1</asHll>
+            <asAsm>1</asAsm>
+            <asMacX>1</asMacX>
+            <asSyms>1</asSyms>
+            <asFals>1</asFals>
+            <asDbgD>1</asDbgD>
+            <asForm>1</asForm>
+            <ldLst>0</ldLst>
+            <ldmm>1</ldmm>
+            <ldXref>1</ldXref>
+            <BigEnd>0</BigEnd>
+            <AdsALst>1</AdsALst>
+            <AdsACrf>1</AdsACrf>
+            <AdsANop>0</AdsANop>
+            <AdsANot>0</AdsANot>
+            <AdsLLst>1</AdsLLst>
+            <AdsLmap>1</AdsLmap>
+            <AdsLcgr>1</AdsLcgr>
+            <AdsLsym>1</AdsLsym>
+            <AdsLszi>1</AdsLszi>
+            <AdsLtoi>1</AdsLtoi>
+            <AdsLsun>1</AdsLsun>
+            <AdsLven>1</AdsLven>
+            <AdsLsxf>1</AdsLsxf>
+            <RvctClst>0</RvctClst>
+            <GenPPlst>0</GenPPlst>
+            <AdsCpuType>"Cortex-M4"</AdsCpuType>
+            <RvctDeviceName></RvctDeviceName>
+            <mOS>0</mOS>
+            <uocRom>0</uocRom>
+            <uocRam>0</uocRam>
+            <hadIROM>1</hadIROM>
+            <hadIRAM>1</hadIRAM>
+            <hadXRAM>0</hadXRAM>
+            <uocXRam>0</uocXRam>
+            <RvdsVP>0</RvdsVP>
+            <RvdsMve>0</RvdsMve>
+            <RvdsCdeCp>0</RvdsCdeCp>
+            <hadIRAM2>0</hadIRAM2>
+            <hadIROM2>0</hadIROM2>
+            <StupSel>8</StupSel>
+            <useUlib>1</useUlib>
+            <EndSel>0</EndSel>
+            <uLtcg>0</uLtcg>
+            <nSecure>0</nSecure>
+            <RoSelD>3</RoSelD>
+            <RwSelD>3</RwSelD>
+            <CodeSel>0</CodeSel>
+            <OptFeed>0</OptFeed>
+            <NoZi1>0</NoZi1>
+            <NoZi2>0</NoZi2>
+            <NoZi3>0</NoZi3>
+            <NoZi4>0</NoZi4>
+            <NoZi5>0</NoZi5>
+            <Ro1Chk>0</Ro1Chk>
+            <Ro2Chk>0</Ro2Chk>
+            <Ro3Chk>0</Ro3Chk>
+            <Ir1Chk>1</Ir1Chk>
+            <Ir2Chk>0</Ir2Chk>
+            <Ra1Chk>0</Ra1Chk>
+            <Ra2Chk>0</Ra2Chk>
+            <Ra3Chk>0</Ra3Chk>
+            <Im1Chk>1</Im1Chk>
+            <Im2Chk>0</Im2Chk>
+            <OnChipMemories>
+              <Ocm1>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm1>
+              <Ocm2>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm2>
+              <Ocm3>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm3>
+              <Ocm4>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm4>
+              <Ocm5>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm5>
+              <Ocm6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm6>
+              <IRAM>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x38000</Size>
+              </IRAM>
+              <IROM>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x100000</Size>
+              </IROM>
+              <XRAM>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </XRAM>
+              <OCR_RVCT1>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT1>
+              <OCR_RVCT2>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT2>
+              <OCR_RVCT3>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT3>
+              <OCR_RVCT4>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x4000</Size>
+              </OCR_RVCT4>
+              <OCR_RVCT5>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT5>
+              <OCR_RVCT6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT6>
+              <OCR_RVCT7>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT7>
+              <OCR_RVCT8>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT8>
+              <OCR_RVCT9>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x8000</Size>
+              </OCR_RVCT9>
+              <OCR_RVCT10>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT10>
+            </OnChipMemories>
+            <RvctStartVector></RvctStartVector>
+          </ArmAdsMisc>
+          <Cads>
+            <interw>1</interw>
+            <Optim>1</Optim>
+            <oTime>0</oTime>
+            <SplitLS>0</SplitLS>
+            <OneElfS>1</OneElfS>
+            <Strict>0</Strict>
+            <EnumInt>0</EnumInt>
+            <PlainCh>0</PlainCh>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <wLevel>2</wLevel>
+            <uThumb>0</uThumb>
+            <uSurpInc>0</uSurpInc>
+            <uC99>0</uC99>
+            <uGnu>0</uGnu>
+            <useXO>0</useXO>
+            <v6Lang>1</v6Lang>
+            <v6LangP>1</v6LangP>
+            <vShortEn>1</vShortEn>
+            <vShortWch>1</vShortWch>
+            <v6Lto>0</v6Lto>
+            <v6WtE>0</v6WtE>
+            <v6Rtti>0</v6Rtti>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define>AT32F415RCT7,USE_STDPERIPH_DRIVER,AT_START_F415_V1</Define>
+              <Undefine></Undefine>
+              <IncludePath>..\..\..\..\..\libraries\drivers\inc;..\..\..\..\..\libraries\cmsis\cm4\core_support;..\..\..\..\..\libraries\cmsis\cm4\device_support;..\inc;..\..\..\..\..\project\at32f415_board</IncludePath>
+            </VariousControls>
+          </Cads>
+          <Aads>
+            <interw>1</interw>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <thumb>0</thumb>
+            <SplitLS>0</SplitLS>
+            <SwStkChk>0</SwStkChk>
+            <NoWarn>0</NoWarn>
+            <uSurpInc>0</uSurpInc>
+            <useXO>0</useXO>
+            <ClangAsOpt>1</ClangAsOpt>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Aads>
+          <LDads>
+            <umfTarg>1</umfTarg>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <noStLib>0</noStLib>
+            <RepFail>1</RepFail>
+            <useFile>0</useFile>
+            <TextAddressRange>0x08000000</TextAddressRange>
+            <DataAddressRange>0x20000000</DataAddressRange>
+            <pXoBase></pXoBase>
+            <ScatterFile>.\Objects\at32f403a_bootloader.sct</ScatterFile>
+            <IncludeLibs></IncludeLibs>
+            <IncludeLibsPath></IncludeLibsPath>
+            <Misc></Misc>
+            <LinkerInputFile></LinkerInputFile>
+            <DisabledWarnings></DisabledWarnings>
+          </LDads>
+        </TargetArmAds>
+      </TargetOption>
+      <Groups>
+        <Group>
+          <GroupName>user</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_clock.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\at32f415_clock.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_int.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\at32f415_int.c</FilePath>
+            </File>
+            <File>
+              <FileName>flash.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\flash.c</FilePath>
+            </File>
+            <File>
+              <FileName>iap.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\iap.c</FilePath>
+            </File>
+            <File>
+              <FileName>usart.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\usart.c</FilePath>
+            </File>
+            <File>
+              <FileName>tmr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\tmr.c</FilePath>
+            </File>
+            <File>
+              <FileName>main.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\src\main.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>bsp</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_board.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\project\at32f415_board\at32f415_board.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>firmware</GroupName>
+          <Files>
+            <File>
+              <FileName>at32f415_crm.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_crm.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_flash.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_flash.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_gpio.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_gpio.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_usart.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_usart.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_tmr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_tmr.c</FilePath>
+            </File>
+            <File>
+              <FileName>at32f415_misc.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\drivers\src\at32f415_misc.c</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>cmsis</GroupName>
+          <Files>
+            <File>
+              <FileName>system_at32f415.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\..\libraries\cmsis\cm4\device_support\system_at32f415.c</FilePath>
+            </File>
+            <File>
+              <FileName>startup_at32f415.s</FileName>
+              <FileType>2</FileType>
+              <FilePath>..\..\..\..\..\libraries\cmsis\cm4\device_support\startup\mdk\startup_at32f415.s</FilePath>
+            </File>
+          </Files>
+        </Group>
+        <Group>
+          <GroupName>readme</GroupName>
+          <Files>
+            <File>
+              <FileName>readme.txt</FileName>
+              <FileType>5</FileType>
+              <FilePath>..\readme.txt</FilePath>
+            </File>
+          </Files>
+        </Group>
+      </Groups>
+    </Target>
+  </Targets>
+
+  <RTE>
+    <apis/>
+    <components/>
+    <files/>
+  </RTE>
+
+  <LayerInfo>
+    <Layers>
+      <Layer>
+        <LayName>&lt;Project Info&gt;</LayName>
+        <LayDesc></LayDesc>
+        <LayUrl></LayUrl>
+        <LayKeys></LayKeys>
+        <LayCat></LayCat>
+        <LayLic></LayLic>
+        <LayTarg>0</LayTarg>
+        <LayPrjMark>1</LayPrjMark>
+      </Layer>
+    </Layers>
+  </LayerInfo>
+
+</Project>

utilities/at32f415_usart_iap_demo/source_code/bootloader/readme.txt

@@ -0,0 +1,13 @@
+/**
+  **************************************************************************
+  * @file     readme.txt
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    readme
+  **************************************************************************
+  */
+
+  this demo is based on the at-start board, in this demo, shows the bootloader
+  operating flow for at32f4xx series. led2 on the at-start board is twinkling
+  when iap bootloader is running. for more detailed information. please refer 
+  to the application note document AN0001.

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/at32f415_clock.c

@@ -0,0 +1,99 @@
+/**
+  **************************************************************************
+  * @file     at32f415_clock.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    system clock config program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415_clock.h"
+
+/**
+  * @brief  system clock config program
+  * @note   the system clock is configured as follow:
+  *         - system clock        = hext / 2 * pll_mult
+  *         - system clock source = pll (hext)
+  *         - hext                = 8000000
+  *         - sclk                = 144000000
+  *         - ahbdiv              = 1
+  *         - ahbclk              = 144000000
+  *         - apb2div             = 2
+  *         - apb2clk             = 72000000
+  *         - apb1div             = 2
+  *         - apb1clk             = 72000000
+  *         - pll_mult            = 36
+  *         - flash_wtcyc         = 4 cycle
+  * @param  none
+  * @retval none
+  */
+void system_clock_config(void)
+{
+  /* config flash psr register */
+  flash_psr_set(FLASH_WAIT_CYCLE_4); 
+ 
+  /* reset crm */
+  crm_reset();
+
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_HEXT, TRUE);
+
+  /* wait till hext is ready */
+  while(crm_hext_stable_wait() == ERROR)
+  {
+  }
+
+  /* config pll clock resource */
+  crm_pll_config(CRM_PLL_SOURCE_HEXT_DIV, CRM_PLL_MULT_36);
+
+  /* enable pll */
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_PLL, TRUE);
+
+  /* wait till pll is ready */
+  while(crm_flag_get(CRM_PLL_STABLE_FLAG) != SET)
+  {
+  }
+
+  /* config ahbclk */
+  crm_ahb_div_set(CRM_AHB_DIV_1);
+
+  /* config apb2clk */
+  crm_apb2_div_set(CRM_APB2_DIV_2);
+
+  /* config apb1clk */
+  crm_apb1_div_set(CRM_APB1_DIV_2);
+
+  /* enable auto step mode */
+  crm_auto_step_mode_enable(TRUE);
+
+  /* select pll as system clock source */
+  crm_sysclk_switch(CRM_SCLK_PLL);
+
+  /* wait till pll is used as system clock source */
+  while(crm_sysclk_switch_status_get() != CRM_SCLK_PLL)
+  {
+  }
+
+  /* disable auto step mode */
+  crm_auto_step_mode_enable(FALSE);
+
+  /* update system_core_clock global variable */
+  system_core_clock_update();
+}

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/at32f415_int.c

@@ -0,0 +1,141 @@
+/**
+  **************************************************************************
+  * @file     at32f415_int.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    main interrupt service routines.
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* includes ------------------------------------------------------------------*/
+#include "at32f415_int.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/**
+  * @brief  this function handles nmi exception.
+  * @param  none
+  * @retval none
+  */
+void NMI_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles hard fault exception.
+  * @param  none
+  * @retval none
+  */
+void HardFault_Handler(void)
+{
+  /* go to infinite loop when hard fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles memory manage exception.
+  * @param  none
+  * @retval none
+  */
+void MemManage_Handler(void)
+{
+  /* go to infinite loop when memory manage exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles bus fault exception.
+  * @param  none
+  * @retval none
+  */
+void BusFault_Handler(void)
+{
+  /* go to infinite loop when bus fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles usage fault exception.
+  * @param  none
+  * @retval none
+  */
+void UsageFault_Handler(void)
+{
+  /* go to infinite loop when usage fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  this function handles svcall exception.
+  * @param  none
+  * @retval none
+  */
+void SVC_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles debug monitor exception.
+  * @param  none
+  * @retval none
+  */
+void DebugMon_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles pendsv_handler exception.
+  * @param  none
+  * @retval none
+  */
+void PendSV_Handler(void)
+{
+}
+
+/**
+  * @brief  this function handles systick handler.
+  * @param  none
+  * @retval none
+  */
+void SysTick_Handler(void)
+{
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/flash.c

@@ -0,0 +1,80 @@
+/**
+  **************************************************************************
+  * @file     flash.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    flash program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "flash.h"
+#include "usart.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/**
+  * @brief  flash erase/program operation.
+  * @note   follow 2kb operation of ont time
+  * @param  none
+  * @retval none
+  */
+void flash_2kb_write(uint32_t write_addr, uint8_t *pbuffer)
+{
+  uint16_t index, write_data;  
+  flash_unlock();
+  flash_sector_erase(write_addr);
+  if(FLASH_SIZE < 0x100)  /* less than 256kb, 1kb/sector */
+    flash_sector_erase(write_addr + 0x400);
+  for(index = 0; index < 2048; index += 2)
+  {
+    write_data = (pbuffer[index+1] << 8) + pbuffer[index];
+    flash_halfword_program(write_addr, write_data);
+    write_addr += sizeof(uint16_t);
+  }
+  flash_lock();
+}
+
+/**
+  * @brief  check flash upgrade flag.
+  * @param  none
+  * @retval none
+  */
+flag_status flash_upgrade_flag_read(void)
+{
+  if((*(uint32_t*)IAP_UPGRADE_FLAG_ADDR) == IAP_UPGRADE_FLAG)
+    return SET;
+  else
+    return RESET;
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/iap.c

@@ -0,0 +1,356 @@
+/**
+  **************************************************************************
+  * @file     iap.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    iap program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "iap.h"
+#include "usart.h"
+#include "flash.h"
+#include "tmr.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+cmd_data_step_type cmd_data_step = CMD_DATA_IDLE;
+cmd_ctr_step_type cmd_ctr_step = CMD_CTR_IDLE;
+cmd_data_group_type cmd_data_group_struct;
+update_status_type update_status = UPDATE_PRE;
+static uint8_t cmd_addr_cnt = 0;
+static uint32_t cmd_data_cnt = 0;
+iapfun jump_to_app;
+
+/* app_load don't optimize */
+#if defined (__CC_ARM)
+  #pragma O0
+#elif defined (__ICCARM__)
+  #pragma optimize=s none
+#endif
+/**
+  * @brief  app load.
+  * @param  app_addr
+  *         app code starting address
+  * @retval none
+  */
+void app_load(uint32_t app_addr)
+{
+  /* check the address of stack */
+  if(((*(uint32_t*)app_addr) - 0x20000000) < (SRAM_SIZE * 1024))
+  {
+    /* disable periph clock */
+    crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, FALSE);
+    crm_periph_clock_enable(CRM_USART1_PERIPH_CLOCK, FALSE);
+    crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, FALSE);
+    
+    /* disable nvic irq and clear pending */
+    nvic_irq_disable(USART1_IRQn);
+    nvic_irq_disable(TMR3_GLOBAL_IRQn);
+    __NVIC_ClearPendingIRQ(USART1_IRQn);
+    __NVIC_ClearPendingIRQ(TMR3_GLOBAL_IRQn);
+   
+    jump_to_app = (iapfun)*(uint32_t*)(app_addr + 4);        /* code second word is reset address */    
+    __set_MSP(*(uint32_t*)app_addr);                        /* init app stack pointer(code first word is stack address) */
+    jump_to_app();                                          /* jump to user app */
+  }
+}
+
+/**
+  * @brief  take data from usart buf.
+  * @param  app_addr
+  *         app code starting address
+  * @retval val
+  *         took data
+  */
+uint8_t data_take(void)
+{
+  uint8_t val;
+  usart_interrupt_enable(USART1, USART_RDBF_INT, FALSE);
+  usart_group_struct.count--;
+  usart_interrupt_enable(USART1, USART_RDBF_INT, TRUE);
+  val = usart_group_struct.buf[usart_group_struct.tail++];
+  if(usart_group_struct.tail > (USART_REC_LEN-1))
+    usart_group_struct.tail = 0; 
+  return val;
+}
+
+/**
+  * @brief  command analysis handle.
+  * @param  none
+  * @retval none
+  */
+void command_handle(void)
+{
+  uint8_t val, checksum;
+  uint16_t index; 
+  /* check whether received usart data */
+  if(usart_group_struct.count > 0)   
+    val = data_take();
+  else
+    return;
+  
+  if(update_status == UPDATE_PRE)
+  {
+    if(cmd_ctr_step == CMD_CTR_IDLE)
+    {
+      if(val == 0x5A)
+        cmd_ctr_step = CMD_CTR_INIT;
+    }
+    else if(cmd_ctr_step == CMD_CTR_INIT)
+    {
+      if(val == 0x01)
+      {
+        cmd_ctr_step = CMD_CTR_DONE;
+      }
+      else if(val == 0xA5)
+      {
+        cmd_ctr_step = CMD_CTR_APP;
+      }
+      else
+      {
+        cmd_ctr_step = CMD_CTR_ERR;
+      }
+    }
+  }
+  else if(update_status == UPDATE_ING)
+  {
+    switch(cmd_data_step)
+    {
+      case CMD_DATA_IDLE:
+        if(val == 0x31)
+        {
+          cmd_data_step = CMD_DATA_ADDR;
+          cmd_addr_cnt = 0;
+          cmd_data_cnt = 0;
+        }
+        if(val == 0x5A)
+        {
+          if(cmd_ctr_step == CMD_CTR_IDLE)
+          {
+            cmd_ctr_step = CMD_CTR_INIT;
+            update_status = UPDATE_DONE;
+          }
+        }
+        break;
+      case CMD_DATA_ADDR:
+        cmd_data_group_struct.cmd_addr[cmd_addr_cnt] = val;
+        cmd_addr_cnt++;
+        if(cmd_addr_cnt >= 4)
+        {
+          cmd_addr_cnt = 0;
+          cmd_data_step = CMD_DATA_BUF;
+        }
+        break;
+      case CMD_DATA_BUF:
+        cmd_data_group_struct.cmd_buf[cmd_data_cnt] = val;
+        cmd_data_cnt++;
+        if(cmd_data_cnt >= 2048)
+        {
+          cmd_data_cnt = 0;
+          cmd_data_step = CMD_DATA_CHACK;
+        }
+        break;
+      case CMD_DATA_CHACK:
+        checksum = 0;
+        for(index = 0;index < 4;index++)
+        {
+          checksum += cmd_data_group_struct.cmd_addr[index];
+        }
+        for(index = 0;index < 0x800; index++)
+        {
+          checksum += cmd_data_group_struct.cmd_buf[index];
+        }
+        if(checksum == val)
+        {
+          cmd_data_step = CMD_DATA_DONE;
+        }
+        else
+        {
+          cmd_data_step = CMD_DATA_ERR;
+        }
+        break;
+      default:
+        break;  
+    }      
+  }
+  else if(update_status == UPDATE_DONE)
+  {
+    if(cmd_ctr_step == CMD_CTR_IDLE)
+    {
+      if(val == 0x5A)
+      {
+        cmd_ctr_step = CMD_CTR_INIT;
+      }
+    }
+    else if(cmd_ctr_step == CMD_CTR_INIT)
+    {
+      if(val == 0x02)
+      {
+        cmd_ctr_step = CMD_CTR_DONE;
+      }
+      else
+      {
+        cmd_ctr_step = CMD_CTR_ERR;
+      }
+    }
+  }
+}
+
+/**
+  * @brief  command response ok.
+  * @param  none
+  * @retval none
+  */
+void back_ok(void)
+{
+  usart_data_transmit(USART1, 0xCC);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  usart_data_transmit(USART1, 0xDD);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+}
+
+/**
+  * @brief  command response error.
+  * @param  none
+  * @retval none
+  */
+void back_err(void)
+{
+  usart_data_transmit(USART1, 0xEE);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  usart_data_transmit(USART1, 0xFF);
+  while(usart_flag_get(USART1, USART_TDC_FLAG) == RESET);
+  /* reset state machine of udgrade flow */
+  cmd_data_step = CMD_DATA_IDLE;
+  cmd_ctr_step = CMD_CTR_IDLE;
+  update_status = UPDATE_PRE;
+  cmd_addr_cnt = 0;
+  cmd_data_cnt = 0;  
+  time_ira_cnt = 0;
+  get_data_from_usart_flag = 0;
+}
+
+/**
+  * @brief  app update flow handle.
+  * @param  none
+  * @retval none
+  */
+void app_update_handle(void)
+{
+  uint32_t write_addr=0;
+  if(update_status == UPDATE_PRE)
+  {
+    if(cmd_ctr_step == CMD_CTR_DONE)
+    {
+      cmd_ctr_step = CMD_CTR_IDLE;
+      update_status = UPDATE_CLEAR_FLAG;
+    }
+    else if(cmd_ctr_step == CMD_CTR_APP)
+    {
+      cmd_ctr_step = CMD_CTR_IDLE;
+      back_ok();
+    }
+    else if(cmd_ctr_step == CMD_CTR_ERR)
+    {
+      cmd_ctr_step = CMD_CTR_IDLE;
+      back_err();
+    }
+  }
+  else if(update_status == UPDATE_CLEAR_FLAG)
+  {
+    get_data_from_usart_flag = 1;
+    update_status = UPDATE_ING;
+    back_ok();
+  }
+  else if(update_status == UPDATE_ING)
+  {
+    if(cmd_data_step == CMD_DATA_DONE)
+    {
+      write_addr = (cmd_data_group_struct.cmd_addr[0] << 24) + (cmd_data_group_struct.cmd_addr[1] << 16) + \
+                   (cmd_data_group_struct.cmd_addr[2] << 8) + cmd_data_group_struct.cmd_addr[3];
+      if((write_addr >= APP_START_ADDR) && (write_addr < FLASH_BASE + 1024 * FLASH_SIZE))
+      {      
+        flash_2kb_write(write_addr, cmd_data_group_struct.cmd_buf);
+        cmd_data_step = CMD_DATA_IDLE;
+        back_ok();
+      }
+      else
+      {
+        cmd_data_step = CMD_DATA_IDLE;
+        back_err();
+      }
+    }
+    else if(cmd_data_step == CMD_DATA_ERR)
+    {
+      cmd_data_step = CMD_DATA_IDLE;
+      back_err();
+    }
+  }
+  else if(update_status == UPDATE_DONE)
+  {
+    if(cmd_ctr_step == CMD_CTR_DONE)
+    {
+      cmd_ctr_step = CMD_CTR_IDLE;
+      back_ok();
+      /* check app starting address whether 0x08xxxxxx */
+      if(((*(uint32_t*)(APP_START_ADDR + 4)) & 0xFF000000) == 0x08000000)
+      {
+        crm_reset();
+        /* jump and run in app */
+        app_load(APP_START_ADDR);
+      }
+      else
+      {
+        cmd_ctr_step = CMD_CTR_ERR;
+      }
+    }
+    else if(cmd_ctr_step == CMD_CTR_ERR)
+    {
+      cmd_ctr_step = CMD_CTR_IDLE;
+      back_err();
+    }
+  }
+}
+
+/**
+  * @brief  iap upgrade app handle.
+  * @param  none
+  * @retval none
+  */
+void iap_upgrade_app_handle(void)
+{
+  command_handle();
+  app_update_handle();
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/main.c

@@ -0,0 +1,86 @@
+/**
+  **************************************************************************
+  * @file     main.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    main program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "at32f415_board.h"
+#include "at32f415_clock.h"
+#include "tmr.h"
+#include "usart.h"
+#include "flash.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+/**
+  * @brief  main function.
+  * @param  none
+  * @retval none
+  */
+int main(void)
+{
+  system_clock_config();
+  at32_board_init();
+
+  /* config nvic priority group */
+  nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
+
+  /* check iap_upgrade_flag flag */
+  if(flash_upgrade_flag_read() == RESET)
+  {
+    /* check app starting address whether 0x08xxxxxx */
+    if(((*(uint32_t*)(APP_START_ADDR + 4)) & 0xFF000000) == 0x08000000)
+      app_load(APP_START_ADDR);
+  }
+  
+  /* init usart used for app update */
+  uart_init(115200);
+  
+  /* check whether need to upgrade, if yes, response ok to pc-tool */
+  if(flash_upgrade_flag_read() != RESET)
+    back_ok();
+  
+  /* init tmr used for show code running state(led cycle toggle) */
+  tmr_init();
+  
+  while(1)
+  {
+    /* upgrade handle */
+    iap_upgrade_app_handle();
+  }
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/tmr.c

@@ -0,0 +1,99 @@
+/**
+  **************************************************************************
+  * @file     tmr.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    tmr program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+  
+#include "at32f415_board.h"
+#include "tmr.h"
+#include "iap.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+uint8_t time_ira_cnt=0;
+uint8_t get_data_from_usart_flag = 0;  /* flag for timer out in upgrade flow */
+
+/**
+  * @brief  init tmr.
+  * @param  none
+  * @retval none
+  */
+void tmr_init(void)
+{
+  crm_clocks_freq_type crm_clocks_freq_struct = {0};
+
+  crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, TRUE);
+
+  /* enable the tmr3 global interrupt */
+  nvic_irq_enable(TMR3_GLOBAL_IRQn, 1, 0);
+
+  /* get system clock */
+  crm_clocks_freq_get(&crm_clocks_freq_struct);
+
+  /* time base configuration */
+  tmr_base_init(TMR3, 10000, crm_clocks_freq_struct.ahb_freq / 10000);
+  tmr_cnt_dir_set(TMR3, TMR_COUNT_UP);  
+
+  /* overflow interrupt enable */
+  tmr_interrupt_enable(TMR3, TMR_OVF_INT, TRUE);
+
+  /* enable tmr */
+  tmr_counter_enable(TMR3, TRUE);
+}
+
+/**
+  * @brief  tmr3 global interrupt handler.
+  * @param  none
+  * @retval none
+  */
+void TMR3_GLOBAL_IRQHandler(void)
+{
+  if(tmr_flag_get(TMR3, TMR_OVF_FLAG) == SET)
+  {
+    tmr_flag_clear(TMR3, TMR_OVF_FLAG);
+    at32_led_toggle(LED2);
+    if(get_data_from_usart_flag)
+    {
+      if((++time_ira_cnt) == 0x00)
+        time_ira_cnt = 0xFF;
+      if(time_ira_cnt > 2)
+        back_err();
+      if(time_ira_cnt > 5)
+        crm_periph_clock_enable(LED2_GPIO_CRM_CLK, FALSE);
+    }
+  }  
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */

utilities/at32f415_usart_iap_demo/source_code/bootloader/src/usart.c

@@ -0,0 +1,118 @@
+/**
+  **************************************************************************
+  * @file     usart.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    usart program
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "usart.h"
+#include "tmr.h"
+
+/** @addtogroup UTILITIES_examples
+  * @{
+  */
+
+/** @addtogroup USART_IAP_bootloader
+  * @{
+  */
+
+usart_group_type usart_group_struct;
+
+/**
+  * @brief  init usart.
+  * @param  none
+  * @retval none
+  */
+void uart_init(uint32_t baudrate)
+{
+  gpio_init_type gpio_init_struct;
+  /* enable the usart and it's io clock */
+  crm_periph_clock_enable(CRM_USART1_PERIPH_CLOCK, TRUE);
+  crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+  
+  /* set default parameter */
+  gpio_default_para_init(&gpio_init_struct);
+
+  /* configure the usart1_tx  pa9 */
+  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+  gpio_init_struct.gpio_out_type  = GPIO_OUTPUT_PUSH_PULL;
+  gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+  gpio_init_struct.gpio_pins = GPIO_PINS_9;
+  gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+  gpio_init(GPIOA, &gpio_init_struct);
+
+  /* configure the usart1_rx  pa10 */
+  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+  gpio_init_struct.gpio_out_type  = GPIO_OUTPUT_PUSH_PULL;
+  gpio_init_struct.gpio_mode = GPIO_MODE_INPUT;
+  gpio_init_struct.gpio_pins = GPIO_PINS_10;
+  gpio_init_struct.gpio_pull = GPIO_PULL_UP;
+  gpio_init(GPIOA, &gpio_init_struct);
+  
+  /*configure usart nvic interrupt */
+  nvic_irq_enable(USART1_IRQn, 0, 0);
+  
+  /*configure usart param*/
+  usart_init(USART1, baudrate, USART_DATA_8BITS, USART_STOP_1_BIT);
+  usart_transmitter_enable(USART1, TRUE);
+  usart_receiver_enable(USART1, TRUE);
+  usart_interrupt_enable(USART1, USART_RDBF_INT, TRUE);
+  usart_enable(USART1, TRUE);
+}
+
+/**
+  * @brief  usart1 interrupt handler.
+  * @param  none
+  * @retval none
+  */
+void USART1_IRQHandler(void)
+{
+  uint16_t reval;
+  time_ira_cnt = 0;  /* clear upgrade time out flag */
+  if(usart_flag_get(USART1, USART_RDBF_FLAG) != RESET)
+  {
+    reval = usart_data_receive(USART1);
+    if(usart_group_struct.count > (USART_REC_LEN - 1))
+    {
+      usart_group_struct.count = 0;
+      usart_group_struct.head = 0;
+      usart_group_struct.tail = 0;
+    }
+    else  
+    {
+      usart_group_struct.count++;
+      usart_group_struct.buf[usart_group_struct.head++] = reval;
+      if(usart_group_struct.head > (USART_REC_LEN - 1))
+      {
+        usart_group_struct.head = 0;
+      }
+    }
+  }
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */