標(biāo)題: STM32F4 ADC+DMA例程 基于MDK項目實例源碼 [打印本頁]
作者: lionlike    時間: 2017-5-21 18:44
標(biāo)題: STM32F4 ADC+DMA例程 基于MDK項目實例源碼
基于MDK項目實例



單片機(jī)源程序如下:
  1. #include "adc.h"

  3. ADC_HandleTypeDef    AdcHandle;

  5. void ADC1_MspInit(void)
  6. {
  7.     GPIO_InitTypeDef          GPIO_InitStruct;
  8.     static DMA_HandleTypeDef  hdma_adc;

  10.     __HAL_RCC_GPIOC_CLK_ENABLE();
  11.     __HAL_RCC_ADC1_CLK_ENABLE();
  12.     __HAL_RCC_DMA2_CLK_ENABLE();

  14.     //GPIOC2-5:ADC1-12:15
  15.     GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5;
  16.     GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  17.     GPIO_InitStruct.Pull = GPIO_NOPULL;
  18.     HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  20.     hdma_adc.Instance = DMA2_Stream0;

  22.     hdma_adc.Init.Channel  =  DMA_CHANNEL_0;
  23.     hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
  24.     hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
  25.     hdma_adc.Init.MemInc = DMA_MINC_ENABLE;
  26.     hdma_adc.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
  27.     hdma_adc.Init.MemDataAlignment = DMA_PDATAALIGN_HALFWORD;
  28.     hdma_adc.Init.Mode = DMA_CIRCULAR;
  29.     hdma_adc.Init.Priority = DMA_PRIORITY_HIGH;
  30.     hdma_adc.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
  31.     hdma_adc.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_HALFFULL;
  32.     hdma_adc.Init.MemBurst = DMA_MBURST_SINGLE;
  33.     hdma_adc.Init.PeriphBurst = DMA_PBURST_SINGLE;

  35.     HAL_DMA_Init(&hdma_adc);

  37.     /* Associate the initialized DMA handle to the the ADC handle */
  38.     __HAL_LINKDMA(&AdcHandle, DMA_Handle, hdma_adc);

  40.     /*##-4- Configure the NVIC for DMA #########################################*/
  41.     /* NVIC configuration for DMA transfer complete interrupt */
  42.     HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
  43.     HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
  44. }

  46. void ADC1_Init(void)
  47. {

  49.     AdcHandle.Instance = ADC1;

  51.     AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
  52.     AdcHandle.Init.Resolution = ADC_RESOLUTION_12B;
  53.     AdcHandle.Init.ScanConvMode = ENABLE;
  54.     AdcHandle.Init.ContinuousConvMode = ENABLE;
  55.     AdcHandle.Init.DiscontinuousConvMode = DISABLE;
  56.     AdcHandle.Init.NbrOfDiscConversion = 0;
  57.     AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  58.     AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
  59.     AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  60.     AdcHandle.Init.NbrOfConversion = 4;
  61.     AdcHandle.Init.DMAContinuousRequests = ENABLE;
  62.     AdcHandle.Init.EOCSelection = DISABLE;
  63.                 ADC1_MspInit();
  64.     if(HAL_ADC_Init(&AdcHandle) != HAL_OK)
  65.     {
  66.         /* Initialization Error */
  67.         while(1);
  68.     }

  70. }
  71. void ADC1_Config(void)
  72. {
  73.     ADC_ChannelConfTypeDef sConfig;

  75.                 //channel - 12
  76.     sConfig.Channel = ADC_CHANNEL_12;
  77.     sConfig.Rank = 1;
  78.     sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
  79.     sConfig.Offset = 0;
  80.     HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
  81.        
  82.                 //channel - 13
  83.     sConfig.Channel = ADC_CHANNEL_13;
  84.     sConfig.Rank = 2;
  85.     HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
  86. ……………………

  88. …………限于本文篇幅 余下代碼請從51黑下載附件…………
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所有資料51hei提供下載:
ADC DMA.rar (4.53 MB, 下載次數(shù): 69)


作者: yfl236415    時間: 2017-11-27 11:17
新手教程 下來看看！謝謝大大
作者: easyeasier    時間: 2018-9-7 23:10
小白，求學(xué)習(xí)
作者: jiangkeqin_sy    時間: 2018-9-14 08:56
單片機(jī)源程序如下:新手教程 下來看看！謝謝大大
作者: wdliming    時間: 2018-11-2 16:29
謝謝分享~~~



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