STM32F030C8T6多通道ADC采集DMA程序

hunterccc · 发表于 2021-12-3 11:06

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分享一个STM32F030 多通道ADC采集并用DMA传输的例程，希望可以帮到都需要的TX。

#include "bsp_cpu_adc.h"
#include "usart.h"

/*
PA0 --10脚
PA4 --14脚
PA5 --15脚
PA6 --16脚
AN16-----内部温度传感器
AN17----内部参考电压

*/

__IO uint16_t ADC_ConvertedValue[NOFCHANEL]={0,0,0,0};

DMA_HandleTypeDef  hdma_adcx;
ADC_HandleTypeDef  ADC_Handle;
ADC_ChannelConfTypeDef  ADC_Config;

static void Rheostat_ADC_GPIO_Config(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      // 使能 GPIO 时钟
      __HAL_RCC_GPIOA_CLK_ENABLE();
      __HAL_RCC_ADC1_CLK_ENABLE(); //开ADC时钟
      // 配置 IO
      GPIO_InitStructure.Pin  = GPIO_PIN_0|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6;
      GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;  //配置为模拟模式
      GPIO_InitStructure.Pull = GPIO_NOPULL ; //不上拉不下拉
      HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
}

static void Rheostat_ADC_Mode_Config(void)
{

      // ------------------DMA Init 结构体参数初始化--------------------------
      //DMA_HandleTypeDef hdma_adcx;
      // 开启DMA时钟
      __HAL_RCC_DMA1_CLK_ENABLE();
      // 数据传输通道
      hdma_adcx.Instance = DMA1_Channel1;  //通道1

      hdma_adcx.Init.Direction=DMA_PERIPH_TO_MEMORY;          //存储器到外设
   hdma_adcx.Init.PeriphInc=DMA_PINC_DISABLE;                //外设非增量模式
   hdma_adcx.Init.MemInc=DMA_MINC_ENABLE;                   //存储器增量模式
   hdma_adcx.Init.PeriphDataAlignment=DMA_PDATAALIGN_HALFWORD;//外设数据长度:16位
   hdma_adcx.Init.MemDataAlignment=DMA_MDATAALIGN_HALFWORD; //存储器数据长度:16位
   hdma_adcx.Init.Mode= DMA_CIRCULAR;                      //外设普通模式
   hdma_adcx.Init.Priority=DMA_PRIORITY_MEDIUM;             //中等优先级

      HAL_DMA_Init(&hdma_adcx);                                  //根据指定的参数初始化DMA

__HAL_LINKDMA( &ADC_Handle,DMA_Handle,hdma_adcx);       //DMA句柄关联到
      //---------------------------------------------------------------------------
// 开启ADC时钟
      // __HAL_RCC_ADC1_CLK_ENABLE();
      ADC_Handle.Instance       = ADC1;
  if (HAL_ADC_DeInit(&ADC_Handle) != HAL_OK)
  {
/* ADC de-initialization Error */
// Error_Handler();
  }
   ADC_Handle.Init.ClockPrescaler       = ADC_CLOCK_SYNC_PCLK_DIV2;    /* 同步时钟模式，带prscaler 2的输入ADC时钟 */
      ADC_Handle.Init.Resolution          = ADC_RESOLUTION_12B;          /* //12位精度 */
      ADC_Handle.Init.DataAlign          = ADC_DATAALIGN_RIGHT;          /* //右对齐 */
      ADC_Handle.Init.ScanConvMode       = ADC_SCAN_DIRECTION_FORWARD; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
      ADC_Handle.Init.EOCSelection       = ADC_EOC_SINGLE_CONV;          /* EOC flag picked-up to indicate conversion end */
      ADC_Handle.Init.LowPowerAutoPowerOff  = DISABLE;
      ADC_Handle.Init.LowPowerAutoWait    = DISABLE;                      /* Auto-delayed conversion feature disabled */
      ADC_Handle.Init.ContinuousConvMode = ENABLE;                      /* Continuous mode enabled (automatic conversion restart after each conversion) */
      ADC_Handle.Init.DiscontinuousConvMode = DISABLE;                      /* Parameter discarded because sequencer is disabled */
      ADC_Handle.Init.ExternalTrigConv    = ADC_SOFTWARE_START;          /* 软件触发 */
      ADC_Handle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_NONE; /* Parameter discarded because software trigger chosen */
      ADC_Handle.Init.DMAContinuousRequests = ENABLE;                      /* ADC DMA continuous request to match with DMA circular mode */
      ADC_Handle.Init.Overrun             = ADC_OVR_DATA_OVERWRITTEN;    /* DR register is overwritten with the last conversion result in case of overrun */
      ADC_Handle.Init.SamplingTimeCommon = ADC_SAMPLETIME_55CYCLES_5;

               /* Initialize ADC peripheral according to the passed parameters */
      if (HAL_ADC_Init(&ADC_Handle) != HAL_OK)  //初始化
      {
            //Error_Handler();
               printf("初始化失A\r\n");
      }

//
//       /*  ADC 校准 ################### */
      if (HAL_ADCEx_Calibration_Start(&ADC_Handle) != HAL_OK)
      {
            //Error_Handler();
               printf("校准失败\r\n");
      }
  //---------------------------------------------------------------------------
      ADC_Config.Channel    =  ADC_CHANNEL_0;
      ADC_Config.Rank       = ADC_RANK_CHANNEL_NUMBER;
// 采样时间间隔
ADC_Config.SamplingTime = ADC_SAMPLETIME_55CYCLES_5 ;


      if (HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config) != HAL_OK)
      {
            //Error_Handler();
      }
      //---------------------------------------------------------------------------
      ADC_Config.Channel    =  ADC_CHANNEL_4;
      // ADC_Config.Rank       = 1;
// 采样时间间隔
ADC_Config.SamplingTime = ADC_SAMPLETIME_55CYCLES_5 ;

HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config);

      //---------------------------------------------------------------------------
      ADC_Config.Channel    =  ADC_CHANNEL_5;

// 采样时间间隔
ADC_Config.SamplingTime = ADC_SAMPLETIME_55CYCLES_5 ;

HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config);

      //---------------------------------------------------------------------------
      ADC_Config.Channel    =  ADC_CHANNEL_6;

// 采样时间间隔
ADC_Config.SamplingTime = ADC_SAMPLETIME_55CYCLES_5 ;

HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config);

      //---------------------------------------------------------------------------
      ADC_Config.Channel    =  ADC_CHANNEL_16;

// 采样时间间隔
ADC_Config.SamplingTime = ADC_SAMPLETIME_55CYCLES_5 ;

HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config);

      //---------------------------------------------------------------------------
      ADC_Config.Channel    =  ADC_CHANNEL_17;

// 采样时间间隔
ADC_Config.SamplingTime = ADC_SAMPLETIME_55CYCLES_5 ;

HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config);


   /* ### - 4 - Start conversion in DMA mode ################################# */
  if (HAL_ADC_Start_DMA(&ADC_Handle,
                     (uint32_t *)ADC_ConvertedValue,
                     NOFCHANEL
                     ) != HAL_OK)
  {
   while(1);

  }

代码下载:

FreeRTOS_多通道ADC-DMA _HAL.rar (1.14 MB, 下载次数: 0)

unix155 · 发表于 2021-12-3 11:17

温度传感器怎么用啊

jspij1 · 发表于 2021-12-3 11:17

DMA怎么初始化

CLBuu · 发表于 2021-12-3 18:05

__HAL_RCC_ADC1_CLK_ENABLE(); //开ADC时钟

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STM32F030C8T6多通道ADC采集DMA程序

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