添加硬件I2C

.vscode/settings.json

@@ -14,6 +14,7 @@
         "delay_us.h": "c",
         "core_cm4.h": "c",
         "gd32f4xx_usart.h": "c",
-        "stdlib.h": "c"
+        "stdlib.h": "c",
+        "gd32f4xx_gpio.h": "c"
     }
 }

EWARM/Project.ewp

@@ -357,9 +357,9 @@
                     <state>$PROJ_DIR$\..\rtthread</state>
                     <state>$PROJ_DIR$\..\rtthread\include\libc</state>
                     <state>$PROJ_DIR$\..\rtthread\include</state>
-                    <state>D:\newPtz\drivers</state>
+                    <state>C:\Users\Administrator\Documents\newPtz\drivers\mb85rc64</state>
-                    <state>D:\newPtz\drivers\mb85rc64</state>
+                    <state>C:\Users\Administrator\Documents\newPtz\drivers\tmp75</state>
-                    <state>D:\newPtz\drivers\tmp75</state>
+                    <state>C:\Users\Administrator\Documents\newPtz\drivers</state>
                 </option>
                 <option>
                     <name>CCStdIncCheck</name>
@@ -772,11 +772,11 @@
                 </option>
                 <option>
                     <name>IlinkIcfOverride</name>
-                    <state>0</state>
+                    <state>1</state>
                 </option>
                 <option>
                     <name>IlinkIcfFile</name>
-                    <state>$TOOLKIT_DIR$/config/linker/GigaDevice/GD32F470xE.icf</state>
+                    <state>C:\Users\Administrator\Documents\newPtz\EWARM\iar\GD32F450xE.icf</state>
                 </option>
                 <option>
                     <name>IlinkIcfFileSlave</name>
@@ -2230,6 +2230,12 @@
         <file>
             <name>$PROJ_DIR$\..\drivers\drv_adc.h</name>
         </file>
+        <file>
+            <name>$PROJ_DIR$\..\drivers\drv_i2c.c</name>
+        </file>
+        <file>
+            <name>$PROJ_DIR$\..\drivers\drv_i2c.h</name>
+        </file>
         <file>
             <name>$PROJ_DIR$\..\drivers\drv_usart.c</name>
         </file>

EWARM/Project.ewt

@@ -2901,6 +2901,12 @@
         <file>
             <name>$PROJ_DIR$\..\drivers\drv_adc.h</name>
         </file>
+        <file>
+            <name>$PROJ_DIR$\..\drivers\drv_i2c.c</name>
+        </file>
+        <file>
+            <name>$PROJ_DIR$\..\drivers\drv_i2c.h</name>
+        </file>
         <file>
             <name>$PROJ_DIR$\..\drivers\drv_usart.c</name>
         </file>

GD32F4xx_Firmware_Library/GD32F4xx_standard_peripheral/Source/gd32f4xx_dma.c

@@ -761,10 +761,10 @@ void dma_flag_clear(uint32_t dma_periph, dma_channel_enum channelx, uint32_t fla
     \retval     none
 */
 void dma_interrupt_enable(uint32_t dma_periph, dma_channel_enum channelx, uint32_t source)
-{
+{//DMA_CHXFCTL_FEEIE 7
-    if(DMA_CHXFCTL_FEEIE != source) {
+    if(DMA_CHXFCTL_FEEIE != source) {//不是7
         DMA_CHCTL(dma_periph, channelx) |= source;
-    } else {
+    } else {//是7
         DMA_CHFCTL(dma_periph, channelx) |= source;
     }
 }

applications/main/main.c

@@ -46,9 +46,6 @@ float current;
 float current_origin;
 char tiedian_id[3]={0};
 
-#ifdef MDAX
-uint32_t ctl_data = 0;
-#endif
 
 uint32_t primask;
 
@@ -56,9 +53,6 @@ uint16_t tmp_value = 0;
 
 extern uint16_t USER_ADC_DMA_DATA_BUFF;//bsp_adc.c中定义的ADC数据接收数组
 
-uint8_t g_ADCDataReady=0;//DMA传输完成ADC数据标志位
-
-
 typedef struct _MB85TEST_ 
 {
 	char ttt;
@@ -113,42 +107,8 @@ int main(void)
     // 进入主循环或启动其他任务
     while (1) 
     {
-        #ifdef DMAX
-        ctl_data = DMA_CHCTL(DMAX, USER_DMA_ADC_CHANNEL);
-        if (ctl_data == 33762576)
-        {
-            // dma_channel_enable								  (DMA1, USER_DMA_ADC_CHANNEL);
-            ttest.status = 5;
-        }        
-        else if (ctl_data == 33762577)
-        {
-            ttest.status = 4;
 
-        }
+        #if (defined ADC_MODE_0) || (defined ADC_MODE_1) || (defined ADC_MODE_3)
-
-
-        __asm volatile("mrs %0, primask" : "=r"(primask));
-
-		if(SET == g_ADCDataReady)
-		{
-			g_ADCDataReady = RESET;
-			for(uint8_t i=0; i<CHANNEL_LENGTH; i++)
-			{
-                tmp_value = BSP_ADCDataAcquire(i);
-                if (i == 0)
-                {
-                    voltage = tmp_value/ 4095.0 * 3.3;
-                }
-                else
-                {
-                    current = tmp_value/ 4095.0 * 3.3;
-                }
-			}
-		}
-        rt_thread_mdelay(250);
-        #endif
-
-        #ifndef ADC_MODE_2
         voltage = ptz_Voltage_collect_adc1_task();
         rt_thread_mdelay(500);
         
@@ -159,6 +119,7 @@ int main(void)
         #ifdef ADC_MODE_2
         adc_software_trigger_enable(ADCX, SEQUENCE_CHANNEL);// 软件触发使能 后续接读取
         #endif
+        
 		//测试mb铁电读写
         read_mb_id((uint8_t*)&tiedian_id);//读取铁电ID
 
@@ -172,7 +133,7 @@ int main(void)
     }
 }
 
-#ifdef DMAX
+#ifdef ADC_MODE_3
 
 /*
 *****************************************************************************
@@ -210,7 +171,6 @@ void DMA1_Channel0_IRQHandler(void)
 
 #endif
 
-
 #ifdef ADCX_IRQn
 void ADC_IRQHandler()
 {

drivers/drv_adc.c

@@ -15,11 +15,26 @@
 
 
 #ifdef DMAX
+
 /*全局声明区*/
 uint16_t USER_ADC_DMA_DATA_BUFF[16] = {0};
-uint32_t ctl = 0;
+
 #endif
 
+float adc1_v[LB_V_TIMES];
+float curadc1_out_v;
+uint8_t adc1_v_num = 0;
+
+float adc1_i[LB_I_TIMES];
+float curadc1_out_i;
+uint8_t adc1_i_num = 0;
+
+float tmp75[LB_T_TIMES];
+float curtmp75_out;
+uint8_t tmp75_num;
+
+
+
 bool filter_v_flag = 0;//滤波开启标志位，全局改变一次
 bool filter_i_flag = 0;//滤波开启标志位，全局改变一次
 bool filter_t_flag = 0;//滤波开启标志位，全局改变一次
@@ -43,20 +58,6 @@ void adc_init(void)
 	adc_interrupt_int();
 	#endif
 
-	#ifdef DMAX
-	ctl = DMA_CHCTL(DMAX, USER_DMA_ADC_CHANNEL);
-	if (ctl == 33762576)
-	{
-		// dma_channel_enable								  (DMA1, USER_DMA_ADC_CHANNEL);
-		// ttest.status = 5;
-		dma_channel_enable								  (DMA1, USER_DMA_ADC_CHANNEL);// enable DMA channel
-	}        
-	else if (ctl == 33762577)
-	{
-		// ttest.status = 4;
-
-	}
-	#endif
 }
 /* 时钟+GPIO */
 void adc_rcu_config(void)
@@ -100,20 +101,20 @@ void adc_dma_config(void)
 	dma_single_data_parameter.direction				= DMA_PERIPH_TO_MEMORY;				//ADC外设到RAM全局变量 DMA外设到内存模式开启
 	dma_single_data_parameter.number				= CHANNEL_LENGTH;					//宏决定传输个数
 	dma_single_data_parameter.priority				= DMA_PRIORITY_ULTRA_HIGH;			//优先级设为超高，可改用宏
-	dma_single_data_mode_init						  (DMA1, USER_DMA_ADC_CHANNEL, &dma_single_data_parameter);
+	dma_single_data_mode_init						  (DMAX, USER_DMA_ADC_CHANNEL, &dma_single_data_parameter);
     /* 配置 dma 子连接 */
-	dma_channel_subperipheral_select				  (DMA1, USER_DMA_ADC_CHANNEL, USER_DMA_ADC_SUBPERI);
+	dma_channel_subperipheral_select				  (DMAX, USER_DMA_ADC_CHANNEL, USER_DMA_ADC_SUBPERI);
 	
     /* enable DMA circulation mode */
-    dma_circulation_enable							  (DMA1, USER_DMA_ADC_CHANNEL);// 开启循环模式
+    dma_circulation_enable							  (DMAX, USER_DMA_ADC_CHANNEL);// 开启循环模式
 
 	 /* enable DMA it */
-	dma_interrupt_enable							  (DMA1,USER_DMA_ADC_CHANNEL,DMA_INT_FTF);//DMA传输完成标志位 打开全部完成中断
+	dma_interrupt_enable							  (DMAX,USER_DMA_ADC_CHANNEL,DMA_INT_FTF);//DMA传输完成标志位 打开全部完成中断		4
-	dma_interrupt_enable							  (DMA1,USER_DMA_ADC_CHANNEL,DMA_INT_TAE);
+	// dma_interrupt_enable							  (DMAX,USER_DMA_ADC_CHANNEL,DMA_INT_TAE);//传输错误中断使能位						2
-	dma_interrupt_enable							  (DMA1,USER_DMA_ADC_CHANNEL,DMA_INT_FEE);
+	// dma_interrupt_enable							  (DMAX,USER_DMA_ADC_CHANNEL,DMA_INT_FEE);//										7
 	nvic_irq_enable									  (DMA_ADC_IRQn, DMA_ADC_PRIORITY_PRE, DMA_ADC_PRIORITY_SUB);
 
-    dma_channel_enable								  (DMA1, USER_DMA_ADC_CHANNEL);// enable DMA channel
+    dma_channel_enable								  (DMAX, USER_DMA_ADC_CHANNEL);// enable DMA channel
 }
 
 
@@ -163,7 +164,10 @@ void adc_config(void)
         adc_inserted_channel_config     (ADCX, 0, VOLTAGE_ADC_CHANNEL, ADC_SAMPLETIME_480);//电压
         adc_inserted_channel_config     (ADCX, 1, CURRENT_ADC_CHANNEL, ADC_SAMPLETIME_480);//电流
     }
-
+    #ifdef DMAX
+    adc_routine_channel_config(ADCX, 0, VOLTAGE_ADC_CHANNEL, ADC_SAMPLETIME_480);
+    adc_routine_channel_config(ADCX, 1, CURRENT_ADC_CHANNEL, ADC_SAMPLETIME_480);
+    #endif
 
     /* 使能外部触发：这里使用软件触发，所以先禁用硬件触发 */
     // adc_external_trigger_source_config(ADCX, SEQUENCE_CHANNEL, ADC_EXTTRIG_ROUTINE_T0_CH0);
@@ -192,34 +196,41 @@ void adc_interrupt_int(void)
 }
 #endif
 
+
+
 /* ---------------------------------------------------采集---------------------------------------------------- */
 
 // adc电压采集
 float ptz_Voltage_collect_adc1_task()
 {
-    static float adc1_v[LB_V_TIMES];
-    static float curadc1_out_v;
-    static uint8_t adc1_v_num = 0;
     uint16_t value_V = 0;
 
-    if (SEQUENCE_CHANNEL == ADC_ROUTINE_CHANNEL)
+    #ifdef ADC_MODE_0
-    {
+    /* 模式1需先配置 */
     adc_routine_channel_config(ADCX, 0, VOLTAGE_ADC_CHANNEL, ADC_SAMPLETIME_480);
-    }
+    #endif
 
+    #if (defined ADC_MODE_0) || (defined ADC_MODE_1)
+    /* 模式1 + 2 */
     adc_software_trigger_enable(ADCX, SEQUENCE_CHANNEL);// 软件触发使能 后续接读取
-    if (SEQUENCE_CHANNEL == ADC_ROUTINE_CHANNEL)
+    #endif
-    {
+
+    #ifdef ADC_MODE_0
     while(adc_flag_get(ADCX, ADC_FLAG_EOC) == RESET); // 等待转换结束
     adc_flag_clear(ADCX, ADC_FLAG_EOC);
     value_V = adc_routine_data_read(ADCX); // 读取规则组数据寄存器
-    }
+    #endif
-    else if (SEQUENCE_CHANNEL == ADC_INSERTED_CHANNEL)
+
-    {
+    #ifdef ADC_MODE_1
     while(adc_flag_get(ADCX, ADC_FLAG_EOIC) == RESET); // 等待转换结束
     adc_flag_clear(ADCX, ADC_FLAG_EOIC);
     value_V = adc_inserted_data_read(ADCX, ADC_INSERTED_CHANNEL_0); // 读取注入组数据寄存器
-    }
+    #endif
+
+    #ifdef ADC_MODE_3
+    value_V = BSP_ADCDataAcquire(0);
+    #endif
+
     /* 间接测量，11倍分压/放大 */
     adc1_v[adc1_v_num] = (float)value_V / 4095.0 * 3.3;
 
@@ -230,7 +241,7 @@ float ptz_Voltage_collect_adc1_task()
 		filter_v_flag = 1;
     }
 
-	if (filter_v_flag)
+	if (filter_v_flag)//等读满一组开始滤波
 	{
 		return Filtering(adc1_v, LB_V_TIMES, LB_V_DEL);
 	}
@@ -242,29 +253,33 @@ float ptz_Voltage_collect_adc1_task()
 // adc电流采集
 float ptz_Current_collect_adc1_task()
 {
-    static float adc1_i[LB_I_TIMES];
-    static float curadc1_out_i;
-    static uint8_t adc1_i_num = 0;
     uint16_t value_I = 0;
-    if (SEQUENCE_CHANNEL == ADC_ROUTINE_CHANNEL)
+
-    {
+    #ifdef ADC_MODE_0
+    /* 模式1需先配置 */
     adc_routine_channel_config(ADCX, 0, CURRENT_ADC_CHANNEL, ADC_SAMPLETIME_480);
-    }
+    #endif
 
+    #if (defined ADC_MODE_0) || (defined ADC_MODE_1)
+    /* 模式1 + 2 */
     adc_software_trigger_enable(ADCX, SEQUENCE_CHANNEL);// 软件触发使能 后续接读取
+    #endif
 
-    if (SEQUENCE_CHANNEL == ADC_ROUTINE_CHANNEL)
+    #ifdef ADC_MODE_0
-    {
+    while(adc_flag_get(ADCX, ADC_FLAG_EOC) == RESET); // 等待转换结束
-        while (adc_flag_get(ADCX, ADC_FLAG_EOC) == RESET); // 等待转换结束->等到SET
     adc_flag_clear(ADCX, ADC_FLAG_EOC);
     value_I = adc_routine_data_read(ADCX); // 读取规则组数据寄存器
-    }
+    #endif
-    else if (SEQUENCE_CHANNEL == ADC_INSERTED_CHANNEL)
+
-    {
+    #ifdef ADC_MODE_1
     while(adc_flag_get(ADCX, ADC_FLAG_EOIC) == RESET); // 等待转换结束
     adc_flag_clear(ADCX, ADC_FLAG_EOIC);
     value_I = adc_inserted_data_read(ADCX, ADC_INSERTED_CHANNEL_1); // 读取注入组数据寄存器
-    }
+    #endif
+
+    #ifdef ADC_MODE_3
+    value_I = BSP_ADCDataAcquire(1);
+    #endif
 
     /* 间接测量，11倍分压/放大 */
     adc1_i[adc1_i_num] = (((float)value_I / 4095.0  * 3.3) - 3.3 / 2) / 0.132;
@@ -284,13 +299,9 @@ float ptz_Current_collect_adc1_task()
 }
 
 
-//温度采集
+/* 温度采集 */
 float ptz_temperature_collect_tmp75_task()
 {
-    static float tmp75[5];
-    static unsigned char tmp75_num;
-    static float curtmp75_out;
-
     tmp75[tmp75_num] = tmp75_read_temp();
     tmp75_num ++;
 
@@ -306,7 +317,7 @@ float ptz_temperature_collect_tmp75_task()
     return 0;
 }
 
-
+/* 滤波函数 */
 float Filtering(float *filter, uint8_t filterlens, uint8_t filterdel)
 {
     uint8_t j,k;
@@ -325,7 +336,6 @@ float Filtering(float *filter, uint8_t filterlens, uint8_t filterdel)
 			}
 		}
 	}
-
 	for(uint8_t i = filterdel; i < filterlens - filterdel; i++)
 	{
 		curadc = curadc + filter[i];

drivers/drv_adc.h

@@ -27,6 +27,7 @@
 #define ADC_MODE_0						//规则组、单次转换、非扫描					
 // #define ADC_MODE_1					//注入组、单次转换、扫描、转换结束标志位采集					
 // #define ADC_MODE_2					//注入组、单次转换、扫描、中断转换结束标志位采集					
+// #define ADC_MODE_3					//规则组、连续转换、扫描、DMA采集					
 
 /* 
 adc模式配置参数 
@@ -34,36 +35,47 @@ adc模式配置参数
 	DISABLE
 */
 #ifdef ADC_MODE_0
+
 #define CONTINUOUS_STATUS			DISABLE					// 是否开启连续转换
 #define SEQUENCE_CHANNEL			ADC_ROUTINE_CHANNEL		// 规则组
-// #define SEQUENCE_CHANNEL			ADC_INSERTED_CHANNEL	// 注入组
 #define SCAN_STATUS					DISABLE					// 是否开启扫描模式
 #define	CHANNEL_LENGTH				1						// 通道数量:1~16
+
 #endif
 
 #ifdef ADC_MODE_1
+
 #define CONTINUOUS_STATUS			DISABLE					// 是否开启连续转换
-// #define SEQUENCE_CHANNEL			ADC_ROUTINE_CHANNEL		// 规则组
 #define SEQUENCE_CHANNEL			ADC_INSERTED_CHANNEL	// 注入组
 #define SCAN_STATUS					ENABLE					// 是否开启扫描模式
 #define	CHANNEL_LENGTH				2						// 通道数量:1~16
+
 #endif
 
 #ifdef ADC_MODE_2
-#define CONTINUOUS_STATUS			DISABLE					// 是否开启连续转换
+
-// #define SEQUENCE_CHANNEL			ADC_ROUTINE_CHANNEL		// 规则组
+#define CONTINUOUS_STATUS			DISABLE					// 不开启连续转换
 #define SEQUENCE_CHANNEL			ADC_INSERTED_CHANNEL	// 注入组
 #define SCAN_STATUS					ENABLE					// 是否开启扫描模式
 #define	CHANNEL_LENGTH				2						// 通道数量:1~16
 #define ADCX_IRQn					ADC_IRQn
+
+#endif
+
+#ifdef ADC_MODE_3
+
+#define CONTINUOUS_STATUS			ENABLE					// 开启连续转换
+#define SEQUENCE_CHANNEL			ADC_ROUTINE_CHANNEL		// 规则组
+#define SCAN_STATUS					ENABLE					// 是否开启扫描模式
+#define	CHANNEL_LENGTH				2						// 通道数量:1~16
+#define DMAX						DMA1
+
 #endif
 
 
 /* adc dma */
-// #define DMAX						DMA1
 
 #ifdef DMAX
-#define DMA_STATUS					DISABLE					// 是否开启dma   *后续把这个定义改到#ifdef里*
 #define USER_DMA_ADC_CHANNEL		DMA_CH3					//DMA通道：ADC0:DMA_CH0 DMA_CH4 
 															//         ADC1:DMA_CH2 DMA_CH3 
 															//         ADC2:DMA_CH0 DMA_CH3
@@ -102,6 +114,7 @@ void adc_interrupt_int(void);
 #ifdef DMAX
 void adc_dma_config(void);
 __weak void DMA1_Channel0_IRQHandler(void);
+uint16_t BSP_ADCDataAcquire(uint8_t _index);
 #endif
 
 #endif

drivers/drv_i2c.c

@@ -0,0 +1,121 @@
+/*************************************************
+Copyright (c) 2025, 成都赛联科技有限责任公司
+All rights reserved.
+@file        drv_i2c.C
+@brief       drv_i2c驱动程序
+
+@details
+@note
+@author      dufresne
+@date        2025/09/24
+
+@version		v1.0 2025/09/24 初始版本
+*************************************************/
+
+#include "drv_i2c.h"
+#include "rtthread.h"
+#include <core_cm4.h>
+
+/*
+  @ brief  延时函数
+  @ param
+  @ return
+  @ note   2025-09-15
+*/
+static void delay_us(int us)
+{
+    rt_thread_udelay(us);
+}
+
+void i2c_init(void)
+{
+    i2c_gpio_config();
+    i2c_config();
+}
+/*
+  @ brief  初始化tmp75芯片GPIO引脚
+  @ param
+  @ return
+  @ note  2025-09-15 
+*/
+void i2c_gpio_config(void)
+{
+	// 配置引脚时钟
+	rcu_periph_clock_enable(RCU_GPIOB);
+
+    gpio_af_set(GPIOB, GPIO_AF_4, I2C_SCL_PIN | I2C_SDA_PIN);
+    /* 初始化GPIO复用功能模式 */
+    gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_PULLUP, I2C_SCL_PIN | I2C_SDA_PIN);
+    gpio_output_options_set(GPIOB, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN | I2C_SDA_PIN);
+}
+
+void i2c_config(void)
+{
+    // 启用 I2C 外设的时钟
+	rcu_periph_clock_enable(RCU_I2C0);
+ 
+    // 配置 I2C 的时钟参数：
+    // I2C_PERIPH：这里使用的I2C1
+    // I2C_SPEED：通信速率（单位为 Hz，常用为 100000 或 400000），这里使用100000
+    i2c_clock_config(I2C_PERIPH, I2C_SPEED, I2C_DTCY_2);
+ 
+    // 配置 I2C 工作模式和地址：
+    // I2C_ADDFORMAT_7BITS：使用 7 位地址模式
+    // I2C_BUS_ADDRESS：SD2068器件代码0110010 = 0x32
+    i2c_mode_addr_config(I2C_PERIPH, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, I2C_BUS_ADDRESS);
+ 
+    // 启用 I2C 外设
+    i2c_enable(I2C_PERIPH);
+ 
+    // 使能 ACK 应答功能，确保在接收数据后自动发送 ACK
+    i2c_ack_config(I2C_PERIPH, I2C_ACK_ENABLE);
+}
+
+/*
+  @ brief  读取温度值
+  @ param
+  @ return
+  @ note  2025-09-15 
+*/
+float tmp75_read_temp(void)
+{
+  uint8_t tempH = 0;
+  uint8_t tempL = 0;
+  uint16_t tempCode = 0;
+  float temp = 0;
+
+  // 起始信号
+  i2c_start();
+  // 写tmp75地址
+  tmp75_write_byte(TMP75_ADDRESS);
+  // 接收tmp75的ack信息
+  tmp75_ack();
+  // 发送需读取数据的地址
+  tmp75_write_byte(TEMP_REGISTER_ADDRESS);
+  tmp75_ack();
+
+  i2c_start();
+  // 写tmp75地址
+  tmp75_write_byte(TMP75_ADDRESS + 1); // 读地址数据
+  tmp75_ack();
+  tempH = tmp75_read_byte();
+  master_ack();
+  tempL = tmp75_read_byte();
+  master_noack();
+  i2c_stop();
+
+  tempCode = (tempH << 8) | tempL;
+  tempCode = tempCode >> 6;
+  if (tempCode & 0x200) // 负温度
+  {
+    tempCode &= 0x1ff;
+    temp = ((float)tempCode - 512) / 4;
+  }
+  else
+  {
+    temp = (float)tempCode / 4;
+  }
+  TMP75_SDA_LOW;
+  TMP75_SCL_LOW;
+  return (temp);
+}

drivers/drv_i2c.h

@@ -0,0 +1,41 @@
+///Copyright (c) 2022, 四川汇源光通信有限公司 
+///All rights reserved. 
+///@file        drv_i2c.h 
+///@brief       drv_i2c驱动程序
+///
+///@details     
+///@note        
+///@author      dufresne
+///@date        2025/09/24 
+///
+///@version		v1.0 2025/09/24 初始版本
+
+#ifndef DRV_I2C_H
+#define DRV_I2C_H
+
+#include "gd32f4xx_gpio.h"
+#include "gd32f4xx_i2c.h"
+
+
+
+#define I2C_PERIPH      I2C0
+#define I2C_SCL_PIN     GPIO_PIN_6
+#define I2C_SDA_PIN     GPIO_PIN_7
+#define I2C_SPEED       100000
+
+// #define I2C_SCL_HIGH  gpio_bit_set(GPIOB, I2C_SCL_PIN)
+// #define I2C_SCL_LOW   gpio_bit_reset(GPIOB, I2C_SCL_PIN)
+
+// #define I2C_SDA_HIGH  gpio_bit_set(GPIOB, I2C_SDA_PIN)
+// #define I2C_SDA_LOW   gpio_bit_reset(GPIOB, I2C_SDA_PIN)
+// #define I2C_SDA_GET   gpio_input_bit_get(GPIOB, I2C_SDA_PIN)
+
+
+void i2c_init(void);
+void i2c_gpio_config(void);
+void i2c_config(void);
+
+void temp75_gpio_init();
+float tmp75_read_temp(void);
+
+#endif

drivers/mb85rc64/mb85rc64.h

@@ -17,6 +17,9 @@
 
 #define MB85RC64_ADDRESS_WRITE   0xA0
 #define MB85RC64_ADDRESS_READ    0xA1
+//mb85rc64湔揣華硊
+#define MB85RC64_SAVE_ADDRESS_BEGIN   0x0000
+
 
 #define MB85RC64_SCL_HIGH  gpio_bit_set(GPIOB, GPIO_PIN_6)
 #define MB85RC64_SCL_LOW   gpio_bit_reset(GPIOB, GPIO_PIN_6)
@@ -25,8 +28,6 @@
 #define MB85RC64_SDA_LOW   gpio_bit_reset(GPIOB, GPIO_PIN_7)
 #define MB85RC64_SDA_GET   gpio_input_bit_get(GPIOB, GPIO_PIN_7)
 
-//mb85rc64湔揣華硊
-#define MB85RC64_SAVE_ADDRESS_BEGIN   0x0000
 
 void mb85rc64_gpio_init();
 char mb85rc64_page_write(unsigned short int addr, unsigned char* data, int data_len);

drivers/tmp75/tmp75.c

@@ -207,6 +207,7 @@ static void master_noack()
   TMP75_SCL_LOW;
   delay_us(5);
 }
+
 /*
   @ brief  ¶ÁȡζÈÖµ
   @ param
@@ -239,6 +240,7 @@ float tmp75_read_temp(void)
   tempL = tmp75_read_byte();
   master_noack();
   i2c_stop();
+
   tempCode = (tempH << 8) | tempL;
   tempCode = tempCode >> 6;
   if (tempCode & 0x200) // ¸ºÎ¶È