support linux system

2026-05-21 09:22:01 +00:00 · 2022-08-09 22:38:26 +08:00
parent ef453b4ba6
commit d2816d24b5
130 changed files with 22 additions and 24 deletions
--- a/cores/arduino/libcore/i2c.c
+++ b/cores/arduino/libcore/i2c.c
@@ -0,0 +1,158 @@
+/*
+ * MIT License
+ * Copyright (c) 2019 _VIFEXTech
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "Arduino.h"
+#include "i2c.h"
+
+void I2Cx_Init(i2c_type *I2Cx, uint32_t baudRate)
+{
+    if(I2Cx == I2C1)
+    {
+        crm_periph_clock_enable(CRM_I2C1_PERIPH_CLOCK, TRUE);
+        pinMode(PB6, OUTPUT_AF_OD);
+        pinMode(PB7, OUTPUT_AF_OD);
+    }
+#ifdef CRM_I2C2_PERIPH_CLOCK
+    else if(I2Cx == I2C2)
+    {
+        crm_periph_clock_enable(CRM_I2C2_PERIPH_CLOCK, TRUE);
+        pinMode(PB10, OUTPUT_AF_OD);
+        pinMode(PB11, OUTPUT_AF_OD);
+    }
+#endif
+#ifdef CRM_I2C3_PERIPH_CLOCK
+    else if(I2Cx == I2C3)
+    {
+        crm_periph_clock_enable(CRM_I2C3_PERIPH_CLOCK, TRUE);
+        pinMode(PA8, OUTPUT_AF_OD);
+        pinMode(PC9, OUTPUT_AF_OD);
+    }
+#endif
+    else
+    {
+        return;
+    }
+	/* reset i2c peripheral */
+	i2c_reset(I2Cx);
+	/* i2c peripheral initialization */
+	i2c_init(I2Cx, I2C_FSMODE_DUTY_2_1, baudRate);
+
+    i2c_own_address1_set(I2Cx, I2C_ADDRESS_MODE_7BIT, 0);
+	i2c_ack_enable(I2Cx, TRUE);
+	i2c_master_receive_ack_set(I2Cx, I2C_MASTER_ACK_CURRENT);
+    /* i2c peripheral enable */
+    i2c_enable(I2Cx, TRUE);
+}
+
+void I2Cx_ClearADDRFlag(i2c_type* I2Cx)
+{
+  __IO uint32_t tmpreg;
+
+  tmpreg = I2Cx->sts1;
+
+  tmpreg = I2Cx->sts2;
+}
+
+void I2Cx_Read(i2c_type *I2Cx, uint8_t slaveAddr, uint8_t regAddr, void *buf, uint32_t length)
+{
+    uint8_t *dat = (uint8_t *)buf;
+    
+	/* enable ack */
+	i2c_ack_enable(I2Cx, TRUE);
+
+	/* generate start condtion */
+	i2c_start_generate(I2Cx);
+
+    while(!i2c_flag_get(I2Cx, I2C_STARTF_FLAG));
+    while(I2Cx->ctrl1 & I2C_CTRL1_STARTGEN);
+    i2c_7bit_address_send(I2Cx, (slaveAddr << 1), I2C_DIRECTION_TRANSMIT);
+    while(!i2c_flag_get(I2Cx, I2C_ADDR7F_FLAG));
+    I2Cx_ClearADDRFlag(I2Cx);
+    
+	i2c_data_send(I2Cx, regAddr);
+    while(!i2c_flag_get(I2Cx, I2C_TDC_FLAG));
+    i2c_flag_clear(I2Cx, I2C_TDC_FLAG);
+    
+    i2c_start_generate(I2Cx);
+    while(!i2c_flag_get(I2Cx, I2C_STARTF_FLAG));
+    
+    i2c_7bit_address_send(I2Cx, (slaveAddr << 1), I2C_DIRECTION_RECEIVE);
+    while(!i2c_flag_get(I2Cx, I2C_ADDR7F_FLAG));
+    I2Cx_ClearADDRFlag(I2Cx);
+    
+    while(length --)
+    {
+        if(!length)
+        {
+            i2c_ack_enable(I2Cx, FALSE);
+            i2c_stop_generate(I2Cx);
+        }
+        while(!i2c_flag_get(I2Cx, I2C_RDBF_FLAG));
+        *dat++ = i2c_data_receive(I2Cx); 
+    }
+    while(I2Cx->ctrl1 & I2C_CTRL1_STOPGEN);
+}
+
+void I2Cx_Write(i2c_type *I2Cx, uint8_t slaveAddr, uint8_t regAddr, void *buf, uint32_t length)
+{
+    uint8_t *dat = (uint8_t *)buf;
+    
+	i2c_start_generate(I2Cx);
+    while(!i2c_flag_get(I2Cx, I2C_STARTF_FLAG));
+    
+    i2c_7bit_address_send(I2Cx, (slaveAddr << 1), I2C_DIRECTION_TRANSMIT);
+    while(!i2c_flag_get(I2Cx, I2C_ADDR7F_FLAG));
+    I2Cx_ClearADDRFlag(I2Cx);
+    
+	i2c_data_send(I2Cx, regAddr);
+    while(!i2c_flag_get(I2Cx, I2C_TDC_FLAG));
+    i2c_flag_clear(I2Cx, I2C_TDC_FLAG);
+    
+    while(length --)
+    {
+        i2c_data_send(I2Cx, *dat++);
+        while(!i2c_flag_get(I2Cx, I2C_TDC_FLAG));
+        i2c_flag_clear(I2Cx, I2C_TDC_FLAG);
+    }
+    
+    i2c_stop_generate(I2Cx);
+    
+    while(I2Cx->ctrl1 & I2C_CTRL1_STOPGEN);
+//    while(!I2C_GetFlagStatus(I2Cx, I2C_FLAG_TDE));
+//    while(!I2C_GetFlagStatus(I2Cx, I2C_FLAG_BTFF));
+}
+
+uint8_t I2Cx_ReadReg(i2c_type *I2Cx, uint8_t slaveAddr, uint8_t regAddr)
+{
+    uint8_t retval = 0;
+    I2Cx_Read(I2Cx, slaveAddr, regAddr, &retval, sizeof(uint8_t));
+    return retval;
+}
+
+void I2Cx_WriteReg(i2c_type *I2Cx, uint8_t slaveAddr, uint8_t regAddr, uint8_t value)
+{
+    I2Cx_Write(I2Cx, slaveAddr, regAddr, &value, sizeof(uint8_t));
+}
+
+
+
+