STM32配置IIC接口通信方式参考源码

STM32配置IIC接口通信方式参考源码```c
#include "stm32f10x.h"
GPIO_InitTypeDef GPIO_InitStruct;
I2C_InitTypeDef I2C_InitStruct;
void I2C_Configuration(void)
/* Step 1: Initialize I2C peripheral */
I2C_InitStruct.I2C_Mode = I2C_Mode_I2C; // I2C mode I2C_InitStruct.I2C_DutyCycle = I2C_DutyCycle_2; // I2C duty cycle
I2C_InitStruct.I2C_OwnAddress1 = 0x00; // I2C own address
I2C_InitStruct.I2C_Ack = I2C_Ack_Enable; // I2C Acknowledgement enable
I2C_InitStruct.I2C_AcknowledgedAddress =
I2C_AcknowledgedAddress_7bit; // I2C acknowledged address mode /* Step 2: Initialize GPIO for I2C */
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6 ， GPIO_Pin_7; // GPIO pins connected to I2C peripheral
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_OD; // GPIO mode for I2C
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; // GPIO speed
/* Step 3: Enable GPIO and I2C peripheral clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); // Enables the clock for Alternate Function
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE); // Enables the clock for I2C1
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); // Enables the clock for GPIOB
/* Step 4: Configure GPIO */
GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Step 5: Initialize I2C */
I2C_Init(I2C1, &I2C_InitStruct);
I2C_Cmd(I2C1, ENABLE); // Enable I2C1 peripheral
void I2C_WriteData(uint8_t deviceAddress, uint8_t regAddress, uint8_t data)
/* Step 1: Generate a START condition */
I2C_GenerateSTART(I2C1, ENABLE);
/* Step 2: Wait for START condition to be generated */
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
/* Step 3: Send the device address and wait for acknowledgement */
I2C_Send7bitAddress(I2C1, deviceAddress,
I2C_Direction_Transmitter);
while (!I2C_CheckEvent(I2C1,
I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
/* Step 4: Send the register address and wait for acknowledgement */
I2C_SendData(I2C1, regAddress);
while (!I2C_CheckEvent(I2C1,
I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* Step 5: Send the data and wait for acknowledgement */
I2C_SendData(I2C1, data);
while (!I2C_CheckEvent(I2C1,
I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* Step 6: Generate a STOP condition */
I2C_GenerateSTOP(I2C1, ENABLE);
uint8_t I2C_ReadData(uint8_t deviceAddress, uint8_t regAddress)
uint8_t data;
/* Step 1: Generate a START condition */
I2C_GenerateSTART(I2C1, ENABLE);
/* Step 2: Wait for START condition to be generated */
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
/* Step 3: Send the device address and wait for acknowledgement */
I2C_Send7bitAddress(I2C1, deviceAddress,
I2C_Direction_Transmitter);
while (!I2C_CheckEvent(I2C1,
I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
/* Step 4: Send the register address and wait for acknowledgement */
I2C_Cmd(I2C1, ENABLE);
I2C_SendData(I2C1, regAddress);
while (!I2C_CheckEvent(I2C1,
I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* Step 5: Generate a RESTART condition */
I2C_GenerateSTART(I2C1, ENABLE);
/* Step 6: Wait for RESTART condition to be generated */
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
/* Step 7: Send the device address and wait for acknowledgement */
I2C_Send7bitAddress(I2C1, deviceAddress,
I2C_Direction_Receiver);
while (!I2C_CheckEvent(I2C1,
I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
/* Step 8: Enable Acknowledgement */
I2C_AcknowledgeConfig(I2C1, ENABLE);
/* Step 9: Disable Acknowledgement */
data = I2C_ReceiveData(I2C1);
I2C_AcknowledgeConfig(I2C1, DISABLE);
/* Step 10: Generate a STOP condition */
I2C_GenerateSTOP(I2C1, ENABLE);
return data;
int main(void)
/* Step 1: Initialize I2C */
I2C_Configuration(;
/* Step 2: Write data to I2C device */
I2C_WriteData(0xA0, 0x00, 0x01);
/* Step 3: Read data from I2C device */
uint8_t data = I2C_ReadData(0xA0, 0x00);
/* Step 4: Loop forever */
while (1);
return 0;
```
以上是一个简单的STM32配置IIC接口通信方式的参考源码。

其中，`I2C_Configuration(`函数用于初始化I2C外设和GPIO引脚，
`I2C_WriteData(`函数用于向I2C设备写入数据，`I2C_ReadData(`函数用于从I2C设备读取数据。

在`main(`函数中，首先调用
`I2C_Configuration(`函数进行初始化，然后使用`I2C_WriteData(`函数向I2C设备写入数据，在读取之前先写入一个寄存器地址，最后使用
`I2C_ReadData(`函数从I2C设备读取数据。