ADC双通道采集数据，存储位置？

MrTian

我用的ADC+DMA模式双通道采集数据

采集后的数据存储在数组中

现在想分别调用两个通道采集的缓存数据

怎么调用呢？

大神们有什么推荐的例程和方法吗？

MrTian

void bsp_InitADC(void)
{  
        ADC_InitTypeDef       ADC_InitStructure;
    ADC_CommonInitTypeDef ADC_CommonInitStructure;
    DMA_InitTypeDef       DMA_InitStructure;
    GPIO_InitTypeDef      GPIO_InitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;


    NVIC_InitStructure.NVIC_IRQChannel = ADC_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
       

    NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream1_IRQn;//
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);       
       
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOF |RCC_AHB1Periph_GPIOC, ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2 |
                                                   RCC_APB2Periph_ADC3, ENABLE);
       

        DMA_InitStructure.DMA_Channel = DMA_Channel_2;  
        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC3_DR_ADDRESS;
        DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC3ConvertedValue;
        DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
        DMA_InitStructure.DMA_BufferSize = SAMPLE_COUNT*2;//
        DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
        DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
        DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
        DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_HalfWord;
        DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//
        DMA_InitStructure.DMA_Priority = DMA_Priority_High;
        DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
        DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
        DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
        DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
        DMA_Init(DMA2_Stream1, &DMA_InitStructure);

        DMA_ClearITPendingBit(DMA2_Stream1, DMA_IT_HTIF1);
        DMA_ClearITPendingBit(DMA2_Stream1, DMA_IT_TCIF1);
        DMA_ITConfig(DMA2_Stream1, DMA_IT_HT, ENABLE);       
        DMA_ITConfig(DMA2_Stream1, DMA_IT_TC, ENABLE);
        DMA_Cmd(DMA2_Stream1, ENABLE);

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
        GPIO_Init(GPIOF, &GPIO_InitStructure);

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
        GPIO_Init(GPIOC, &GPIO_InitStructure);

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
        GPIO_Init(GPIOC, &GPIO_InitStructure);

    ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_20Cycles;//ADC_TwoSamplingDelay_8Cycles
    ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
    ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8 ;//ADC_Prescaler_Div2
    ADC_CommonInit(&ADC_CommonInitStructure);
       


        ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
        ADC_InitStructure.ADC_ScanConvMode = ENABLE;//
        ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//ENABLE DISABLE
        ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
        ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC3;
        ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
        ADC_InitStructure.ADC_NbrOfConversion = 2;


        ADC_Init(ADC3, &ADC_InitStructure);
        ADC_RegularChannelConfig(ADC3, ADC_Channel_10, 1, ADC_SampleTime_3Cycles);
        ADC_RegularChannelConfig(ADC3, ADC_Channel_13, 2, ADC_SampleTime_3Cycles);
        /* 使能 ADC3 DMA */
        ADC_DMACmd(ADC3, ENABLE);
       

      ADC_AnalogWatchdogThresholdsConfig(ADC3, ThresholdHigh, ThresholdLow);//

    ADC_AnalogWatchdogSingleChannelConfig(ADC3, ADC_Channel_10);//10


    ADC_AnalogWatchdogCmd(ADC3, ADC_AnalogWatchdog_SingleRegEnable);

    ADC_ITConfig(ADC3, ADC_IT_AWD, ENABLE);

        /* 使能DMA请求 (多ADC模式) --------------------------------------------------*/
        ADC_DMARequestAfterLastTransferCmd(ADC3, ENABLE);

        /* Enable ADC3 --------------------------------------------------------------*/
        ADC_Cmd(ADC3, ENABLE);

        /**定时器配置********************************************************************/
        TIM1_Config();
}

正点原子

论坛搜索，参考下别的网友的代码吧