STM32F373的SDADC在STM32CubeMx中使用DMA配置



1. Pinout配置

    

2. 时钟配置

   

3. SDADC1设备配置

    

   

    

4. DMA配置

   

    

5. 中断配置

   

    

6. 生成代码

    

7. 修改main.c

1. 1. 添加保存SDADC转换结果数组

      /* USER CODE BEGIN PV */

      /* Private variables---------------------------------------------------------*/

      TIMER_TypeDef tmrLed;

      __IO int16_t InjectedConvData_SDADC1[5] = {0, 0, 0, 0, 0};

      __IO uint32_t InjChannel = 0;

       

      /* USER CODE END PV */

       

   2. SDADC1校准

       

      /* USER CODE BEGIN 2 */

      /* Start Calibration in polling mode */

        if(HAL_SDADC_CalibrationStart(&hsdadc1, SDADC_CALIBRATION_SEQ_1) != HAL_OK)

        {

          /* An error occurs duringthe starting phase of the calibration */

          _Error_Handler(__FILE__,__LINE__);

        }

        /* Pool for the end ofcalibration */

        if(HAL_SDADC_PollForCalibEvent(&hsdadc1, HAL_MAX_DELAY) != HAL_OK)

        {

          /* An error occurs whilewaiting for the end of the calibration */

          _Error_Handler(__FILE__,__LINE__);

        }

       

   3. 启动SDADC1

       

        /* Start injected conversionin interrupt mode */

        if(HAL_SDADC_InjectedStart_DMA(&hsdadc1, (uint32_t*)InjectedConvData_SDADC1,4) != HAL_OK)

        {

          /* An error occurs duringthe configuration of the injected conversion in interrupt mode */

          _Error_Handler(__FILE__,__LINE__);

        }

       

        /* USER CODE END 2 */

       

2. 完成代码，可以在调试窗口中观察InjectedConvData_SDADC1[]变量。

3. Single Ended Zero Reference mode下数据转换公式

   (InjectedConvData_SDADC1[x]+ 32768) * SDADCVREF / 65535

4.