STM32读取AD7606-4（HAL库）

一、双通道读取

1.CubeMX配置

①SPI1配置

不要使用Receive Only Master模式

②SPI2配置

2.程序

int16_t Data[4];
float raw_buf[4];
/* 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_DMA_Init();
  MX_SPI1_Init();
  MX_SPI2_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		HAL_GPIO_WritePin(CONVST_GPIO_Port, CONVST_Pin, 1);
		HAL_Delay(100);
		HAL_GPIO_WritePin(CONVST_GPIO_Port, CONVST_Pin, 0);
		
		HAL_SPI_Receive_DMA(&hspi2,(uint8_t *)&Data[2], 2);
		HAL_SPI_Receive(&hspi1, (uint8_t *)&Data[0], 2, 0xFF);
		for(uint8_t ch=0; ch<4; ch++)
    {
			raw_buf[ch] = (float)Data[ch] / 32768.0f * 10.0f;
    }
		
		HAL_Delay(100);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

3.读取顺序

二、单通道读取

1.程序

仅使用一个通道读取即可

HAL_SPI_Receive(&hspi1, (uint8_t *)&Data[0], 4, 0xFF);

2.读取顺序