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STM32F030R8 ADC采样DMA问题

nothing26-10367 提问时间：2014-6-5 08:54 /

问答
是否解决:

：如何将在DMA 中多通道采样中准备指定数组中特定位置存ADC值？（如：ADC通道1 存放于RegularConvData_Tab[1],ADC通道2存放RegularConvData_Tab【2】，以此类推
程序如下：

ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;

INT16U ADC_Raw_Value[ 14*ADC_Converted_len ]; //adc»ñÈ¡µÄÔÊ¼Êý¾Ý
INT16U ADC_ConvertedValue[14]; //¼ÆËã×ª»»ºÃµÄ×îÖÕÓÃ»§Êý¾Ý

__IO uint16_t RegularConvData_Tab[14];
void InitADC(void)
{
// configuration ADC ///////////////////////////////////////////////////////////////
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
NVIC_InitTypeDef NVIC_InitStruct;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_3|GPIO_Pin_4
|GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_0| GPIO_Pin_1| GPIO_Pin_2|
GPIO_Pin_4|GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOB, &GPIO_InitStructure);

//NVIC_InitStruct.NVIC_IRQChannel = DMA1_Channel1_IRQn;
// NVIC_InitStruct.NVIC_IRQChannelPriority = 2;
//NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
//NVIC_Init(&NVIC_InitStruct);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 , ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
ADC_DeInit(ADC1);//ADC»Ö¸´Ä¬ÈÏÉèÖÃ
DMA_DeInit(DMA1_Channel1); /* DMA1 Channel1 Config */
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;//ÍâÉèµØÖ·
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_Raw_Value;//ÄÚ´æµØÖ·RegularConvData_Tab
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//ÍâÉè×÷ÎªÊý¾Ý´«ÊäµÄÀ´Ô´
DMA_InitStructure.DMA_BufferSize = 14*ADC_Converted_len;// 12
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//ÍâÉèµØÖ·¼Ä´æÆ÷²»±ä
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//ÄÚ´æµØÖ·¼Ä´æÆ÷²»±ä
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//Êý¾Ý¿í¶ÈÎª16Î»
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//Êý¾Ý¿í¶ÈÎª16Î»
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;//DMA_PriorityÉè¶¨DMAÍ¨µÀxµÄÈí¼þÓÅÏÈ¼¶
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//DMAÍ¨µÀxÃ»ÓÐÉèÖÃÎªÄÚ´æµ½ÄÚ´æ´«Êä

DMA_Init(DMA1_Channel1, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel1, ENABLE);/* DMA1 Channel1 enable */
    /*Enables the specified DMAy Channelx interrupts */
//DMA_ITConfig(DMA1_Channel1,DMA_IT_TC,ENABLE);
    /* ADC DMA request in circular mode */
ADC_DMARequestModeConfig(ADC1, ADC_DMAMode_Circular); /* Enable ADC_DMA */
ADC_DMACmd(ADC1, ENABLE);

ADC_StructInit(&ADC_InitStructure);//³õÊ¼»¯ADC½á¹¹
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//12Î»¾«¶È
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //¹æ¶¨Ä£Ê½×°»»¹¤×÷ÔÚÁ¬ÐøÄ£Ê½
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//Êý¾Ý¶ÔÆäÎªÓÒ¶ÔÆë
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Backward; //ADCµÄÉ¨Ãè·½Ïò
ADC_Init(ADC1, &ADC_InitStructure);

//ADC_ChannelConfig(ADC1, ADC_Channel_1 , ADC_SampleTime_239_5Cycles); /* Convert the ADC1 Channel 11 with 239.5 Cycles as sampling time */
//ADC_ChannelConfig(ADC1, ADC_Channel_Vrefint ,ADC_SampleTime_239_5Cycles);
//ADC_VrefintCmd(ENABLE);
//ADC_ChannelConfig(ADC1, ADC_Channel_TempSensor ,ADC_SampleTime_239_5Cycles);
//ADC_TempSensorCmd(ENABLE);
//ADC_ChannelConfig(ADC1, ADC_Channel_Vbat ,ADC_SampleTime_239_5Cycles);
//ADC_VbatCmd(ENABLE);
ADC_ChannelConfig(ADC1, ADCGrp1I, ADC_SampleTime_28_5Cycles); //28.5
ADC_ChannelConfig(ADC1, ADCGrp1V , ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp1T, ADC_SampleTime_28_5Cycles);

ADC_ChannelConfig(ADC1, ADCGrp2I, ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp2V , ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp2T, ADC_SampleTime_28_5Cycles);

ADC_ChannelConfig(ADC1, ADCGrp3I, ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp3V , ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp3T, ADC_SampleTime_28_5Cycles);

ADC_ChannelConfig(ADC1, ADCGrp4I, ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp4V , ADC_SampleTime_28_5Cycles);
ADC_ChannelConfig(ADC1, ADCGrp4T, ADC_SampleTime_28_5Cycles);

ADC_ChannelConfig(ADC1, ADC_Channel_TempSensor, ADC_SampleTime_28_5Cycles);
   ADC_TempSensorCmd(ENABLE);
ADC_ChannelConfig(ADC1, ADC_Channel_Vrefint , ADC_SampleTime_28_5Cycles);
   ADC_VrefintCmd(ENABLE);
ADC_GetCalibrationFactor(ADC1); /* ADC Calibration */
ADC_Cmd(ADC1, ENABLE); /* Enable ADCperipheral[PerIdx] */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN)); /* Wait the ADCEN falg */
ADC_StartOfConversion(ADC1); /* ADC1 regular Software Start Conv */
}