update version to v2.1.7

utilities/at32f415_boot_memory_ap_demo/read_write_boot_memory/readme.txt

@@ -5,7 +5,7 @@
   **************************************************************************
   */
 
-  this demo is based on the at-start board, executing this project£¬step1/step2
+  this demo is based on the at-start board, executing this project, step1/step2
   should be follow.
   step1 : enbale ap mode by icp tool. user should set boot memory to ap mode
           with icp tool.

utilities/at32f415_boot_memory_ap_demo/run_in_boot_memory/readme.txt

@@ -5,7 +5,7 @@
   **************************************************************************
   */
 
-  this demo is based on the at-start board, executing this project£¬step1/step2
+  this demo is based on the at-start board, executing this project, step1/step2
   should be follow.
   step1 : enbale ap mode by icp tool. user should set boot memory to ap mode
           with icp tool.

utilities/at32f415_usart_iap_demo/source_code/app_led3_toggle/mdk_v5/app_led3_toggle.uvprojx

@@ -275,7 +275,7 @@
               <OCR_RVCT4>
                 <Type>1</Type>
                 <StartAddress>0x8004000</StartAddress>
-                <Size>0xfc000</Size>
+                <Size>0x3c000</Size>
               </OCR_RVCT4>
               <OCR_RVCT5>
                 <Type>1</Type>

utilities/at32f415_usart_iap_demo/source_code/app_led4_toggle/mdk_v5/app_led4_toggle.uvprojx

@@ -275,7 +275,7 @@
               <OCR_RVCT4>
                 <Type>1</Type>
                 <StartAddress>0x8004000</StartAddress>
-                <Size>0xfc000</Size>
+                <Size>0x3c000</Size>
               </OCR_RVCT4>
               <OCR_RVCT5>
                 <Type>1</Type>

utilities/at32f415_usb_iap_demo/source_code/app_led3_toggle/src/main.c

@@ -101,7 +101,10 @@ int main(void)
   */
 void usb_clock48m_select(usb_clk48_s clk_s)
 {
-  switch(system_core_clock)
+  crm_clocks_freq_type clocks_struct;
+  
+  crm_clocks_freq_get(&clocks_struct);
+  switch(clocks_struct.sclk_freq)
   {
     /* 48MHz */
     case 48000000:
@@ -130,7 +133,6 @@ void usb_clock48m_select(usb_clk48_s clk_s)
 
     default:
       break;
-
   }
 }
 

utilities/at32f415_usb_iap_demo/source_code/app_led4_toggle/src/main.c

@@ -101,7 +101,10 @@ int main(void)
   */
 void usb_clock48m_select(usb_clk48_s clk_s)
 {
-  switch(system_core_clock)
+  crm_clocks_freq_type clocks_struct;
+  
+  crm_clocks_freq_get(&clocks_struct);
+  switch(clocks_struct.sclk_freq)
   {
     /* 48MHz */
     case 48000000:
@@ -130,7 +133,6 @@ void usb_clock48m_select(usb_clk48_s clk_s)
 
     default:
       break;
-
   }
 }
 

utilities/at32f415_usb_iap_demo/source_code/bootloader/src/main.c

@@ -103,7 +103,10 @@ int main(void)
   */
 void usb_clock48m_select(usb_clk48_s clk_s)
 {
-  switch(system_core_clock)
+  crm_clocks_freq_type clocks_struct;
+  
+  crm_clocks_freq_get(&clocks_struct);
+  switch(clocks_struct.sclk_freq)
   {
     /* 48MHz */
     case 48000000:
@@ -132,7 +135,6 @@ void usb_clock48m_select(usb_clk48_s clk_s)
 
     default:
       break;
-
   }
 }