# STM32_HAL_i2c_slave_test

**Repository Path**: togod121/STM32_HAL_i2c_slave_test

## Basic Information

- **Project Name**: STM32_HAL_i2c_slave_test
- **Description**: STM32_HAL_i2c2做从机实验
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-11-24
- **Last Updated**: 2024-11-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 从机

## 参考文档

[总结一下首次使用HAL库STM32f030硬件IIC从机中断收发_stm32 i2c 地址中断-CSDN博客](https://blog.csdn.net/stonenth/article/details/122452140)

[STM32设置为I2C从机模式（HAL库版本）_stm32 i2c从机-CSDN博客](https://blog.csdn.net/ShenZhen_zixian/article/details/131395791)


## 基本设置


### 设置地址

![](attachment/ce367873db3eca7ed7c668eaa80f6c72.png)




### 设置中断
![](attachment/bad3724a814b404fd8448a267a66db9e.png)



### 启动I2C接收中断

```
HAL_I2C_EnableListen_IT(&hi2c1);
```

## 基本测试完成

```c
//发送计数偏移
uint16_t TX_OFFSET=0;
uint16_t RX_OFFSET=0;

uint8_t rx_buff[256] = {0x00};
uint8_t tx_buff[260] =
{
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
  0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,
};


#define I2C_SLAVE hi2c2

// I2C设备地址回调函数（地址匹配上以后会进入该函数）
void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode)
{
    __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);

	if(TransferDirection == I2C_DIRECTION_RECEIVE)      //需要发送
	{
		//发送一个数据，后面的数据在发送完成中断里，一个一个的发
		TX_OFFSET=rx_buff[0];
		HAL_I2C_Slave_Seq_Transmit_IT(&I2C_SLAVE, (tx_buff + TX_OFFSET), 1, I2C_FIRST_FRAME);

	}
	else if(TransferDirection == I2C_DIRECTION_TRANSMIT)//需要接收
	{
		TX_OFFSET=0;
		RX_OFFSET=0;
		//准备接收1个数据
		//不管是接收还是发送，都会接受一个数据，地址
		HAL_I2C_Slave_Seq_Receive_IT(&I2C_SLAVE, rx_buff+RX_OFFSET, 1, I2C_FIRST_FRAME);
	}

}
//监听中断回调，说明传输结束
// 侦听完成回调函数（完成一次完整的i2c通信以后会进入该函数）
//连续多个数据时，全部数据结束后才出发这个中断，
void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c)
{
	//完成后需要手动重启监听
	HAL_I2C_EnableListen_IT(hi2c); // Restart
}

//发送完成中断
//HAL_I2C_Slave_Seq_Transmit_IT完成后进入这个中断
void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c)
{
	//继续发送后面的数据
	TX_OFFSET++;
	HAL_I2C_Slave_Seq_Transmit_IT(&I2C_SLAVE, (tx_buff + TX_OFFSET), 1, I2C_FIRST_FRAME);
}
//
//接收完成中断
void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c)
{
	RX_OFFSET++;
	//准备接收1个数据
	HAL_I2C_Slave_Seq_Receive_IT(&I2C_SLAVE, rx_buff+RX_OFFSET, 1, I2C_FIRST_FRAME);
}
//
//发生错误中断
void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c)
{
	
}

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */

  HAL_I2C_EnableListen_IT(&hi2c1);

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

  while (1)
  {
	  HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
	  HAL_Delay(500);


    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */
}



```


## 树莓派测试

测试通过：I2C2 PB10(SCL) PB11(SDA)


```
sudo i2cdetect -y -a 1

i2cdump -y -f 1 0x32

i2cget -y -f 1 0x32 0x38

i2cset -y -f 1 0x32 0x38 0x01 0x02 i

i2cset -y -f 1 0x32 0x00 0x00 0x00 0xB4 0xAB i
```


### 效果

![](attachment/91d5e75deb6f79e40a9c7424c5497cc8.png)


![](attachment/b42b45a2bc2459fccf2297aac44568ce.png)