STM32F303同时使用ADC1，ADC2DMA模式的配置分享-第2页回答

STM32F303同时使用ADC1，ADC2DMA模式的配置分享

2019-12-26 18:54发布

19391 10

最近搞STM32F303的ADC1，ADC2使用DMA传输。发现只能单独使用一个，怎么配置都不对。查了手册发现ADC1ADC2其实是使用同一个32位寄存器，高半字ADC2，低半字ADC1。在这里分享下配置。
static void ADCGPIO_Config(void)
{
      GPIO_InitTypeDef GPIO_ADCInitTypeDef;

      RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
      RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);


   GPIO_ADCInitTypeDef.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
   GPIO_ADCInitTypeDef.GPIO_Mode = GPIO_Mode_AN;
   GPIO_ADCInitTypeDef.GPIO_Speed= GPIO_Speed_50MHz;
   GPIO_ADCInitTypeDef.GPIO_PuPd = GPIO_PuPd_NOPULL;
   GPIO_Init(GPIOA, &GPIO_ADCInitTypeDef);

   GPIO_ADCInitTypeDef.GPIO_Pin = GPIO_Pin_14|GPIO_Pin_15;
   GPIO_ADCInitTypeDef.GPIO_Mode = GPIO_Mode_AN;
   GPIO_ADCInitTypeDef.GPIO_Speed= GPIO_Speed_50MHz;
   GPIO_ADCInitTypeDef.GPIO_PuPd = GPIO_PuPd_NOPULL;
   GPIO_Init(GPIOB, &GPIO_ADCInitTypeDef);

}
/******************************************************************************
* Function Name: ADC_DMA_Config
* Description: DMAÅäÖÃ
* Input:
* Output:
* Return:
******************************************************************************/
void ADC_DMA_Config1(void)
{
// DMA_InitTypeDef DMA_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

DMA_DeInit(DMA1_Channel1);
      DMA_StructInit(&DMA_InitStructure_ADC1);
DMA_InitStructure_ADC1.DMA_PeripheralBaseAddr = (uint32_t)&ADC1_2->CDR; //外设地址
DMA_InitStructure_ADC1.DMA_MemoryBaseAddr = (uint32_t)&ADC_ConvertedValue_NO1;  //自定义存储区，因为要存储两个AD数据，所以要定义为32位
DMA_InitStructure_ADC1.DMA_DIR = DMA_DIR_PeripheralSRC; //外设到内存
DMA_InitStructure_ADC1.DMA_BufferSize = ADCOUTNBUFFLENGTH;       //缓存长度
DMA_InitStructure_ADC1.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址禁止自动增加
DMA_InitStructure_ADC1.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址自动增加

DMA_InitStructure_ADC1.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; //外设数据大小，一个字

DMA_InitStructure_ADC1.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;  //内存数据打下，一个字
DMA_InitStructure_ADC1.DMA_Mode = DMA_Mode_Circular;    //DMAÑ循环
DMA_InitStructure_ADC1.DMA_Priority = DMA_Priority_High; //高优先级
DMA_InitStructure_ADC1.DMA_M2M =DMA_M2M_Disable;

      DMA_Init(DMA1_Channel1, &DMA_InitStructure_ADC1);

DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
      DMA_Cmd(DMA1_Channel1, ENABLE);

}
/******************************************************************************
* Function Name: ADC_Config
* Description: ADCÅäÖÃ
* Input:
* Output:
* Return:
******************************************************************************/
void ADC_Config2(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);

ADC_InitStructure.ADC_ContinuousConvMode    = ADC_ContinuousConvMode_Disable;//Á¬ÐøÄ£Ê½
ADC_InitStructure.ADC_DataAlign             = ADC_DataAlign_Right;          //ÓÒ¶ÔÆëÊý¾Ý
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0; //´¥·¢ÊÂ¼þ
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;//²»Ê¹ÓÃÈí¼þ´¥·¢
ADC_InitStructure.ADC_NbrOfRegChannel       = 4;                            //Í¨µÀÊý
ADC_InitStructure.ADC_OverrunMode          = ADC_OverrunMode_Disable;
   ADC_InitStructure.ADC_AutoInjMode          = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_Resolution             = ADC_Resolution_12b;
ADC_Init(ADC2, &ADC_InitStructure);

ADC_CommonInitStructure.ADC_Clock          = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode    = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode          = ADC_DMAMode_Circular;
ADC_CommonInitStructure.ADC_Mode             = ADC_Mode_RegSimul;
ADC_CommonInitStructure.ADC_TwoSamplingDelay  = 1;
ADC_CommonInit(ADC2,&ADC_CommonInitStructure);
/* ADC2 Regular Channel1 Configuration */
ADC_RegularChannelConfig(ADC2, ADC_Channel_1, 1, ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_2, 2,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_3, 3,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 4,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);

// ADC_DMA_Config2();
// ADC_DMAConfig(ADC2,ADC_DMAMode_Circular);
// ADC_DMACmd(ADC2, ENABLE);          /* Enable ADC2's DMA interface       */

ADC_Cmd(ADC2, ENABLE);          /* Enable ADC2                      */

}
/******************************************************************************
* Function Name: ADC_Config
* Description: ADCÅäÖÃ
* Input:
* Output:
* Return:
******************************************************************************/
void ADC_Config1(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);
//Ìí¼ÓÒ»²½³õÊ¼»¯
ADC_DeInit(ADC1);
// ADC_StructInit(&ADC_InitStructure);
// ADC_CommonStructInit(&ADC_CommonInitStructure);

   /* Calibration procedure */
  ADC_VoltageRegulatorCmd(ADC1, ENABLE);

  /* Insert delay equal to 10 */
  DelayUS(10);

  ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
  ADC_StartCalibration(ADC1);

  while(ADC_GetCalibrationStatus(ADC1) != RESET );
  calibration_value = ADC_GetCalibrationValue(ADC1);

// ADC_InitStructure.ADC_AutoInjMode          =
ADC_InitStructure.ADC_ContinuousConvMode    = ADC_ContinuousConvMode_Disable;
ADC_InitStructure.ADC_DataAlign             = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;
ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;
ADC_InitStructure.ADC_NbrOfRegChannel       = 4;
ADC_InitStructure.ADC_OverrunMode          = ADC_OverrunMode_Disable;
ADC_InitStructure.ADC_AutoInjMode          = ADC_AutoInjec_Disable;
ADC_InitStructure.ADC_Resolution             = ADC_Resolution_12b;
ADC_Init(ADC1, &ADC_InitStructure);

ADC_CommonInitStructure.ADC_Clock          = ADC_Clock_AsynClkMode;
ADC_CommonInitStructure.ADC_DMAAccessMode    = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_DMAMode          = ADC_DMAMode_Circular;
ADC_CommonInitStructure.ADC_Mode             = ADC_Mode_RegSimul;
ADC_CommonInitStructure.ADC_TwoSamplingDelay  = 1;
ADC_CommonInit(ADC1,&ADC_CommonInitStructure);
/* ADC1 Regular Channel1 Configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 2,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 3,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 4,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
//  ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 5,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
// ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 6,  ADC_SampleTime_1Cycles5);//ADC_SampleTime_55Cycles5);
ADC_Config2();

ADC_DMA_Config1();
ADC_DMAConfig(ADC1,ADC_DMAMode_Circular);
ADC_DMACmd(ADC1, ENABLE);          /* Enable ADC1's DMA interface       */

ADC_Cmd(ADC1, ENABLE);          /* Enable ADC1                      */
DelayUS(20);
/* Start ADC1 calibaration */
// ADC_StartCalibration(ADC1);
/* Check the end of ADC1 calibration */
//while(ADC_GetCalibrationStatus(ADC1));
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));
DelayUS(10);
//ADC_StartConversion(ADC1);/* Start ADC1 Software Conversion*/

}

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