基于stm32f103c8t6的ADC多通道DMA电压采集 -

#include "adc.h"
__IO uint16_t ADC_ConvertedValue[NOFCHANEL] = {0,0,0,0,0,0};
static void ADCx_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOA, ENABLE );
GPIO_InitStructure.GPIO_Pin = ADC_PIN1|ADC_PIN2|ADC_PIN3|ADC_PIN4|ADC_PIN5|ADC_PIN6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
static void ADC_GPIO_Config(void)
{
DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1,ENABLE);
DMA_DeInit( DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ( uint32_t ) ( & ( ADC_x->DR ) );
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = NOFCHANEL;
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_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init( DMA1_Channel1, &DMA_InitStructure);
DMA_Cmd( DMA1_Channel1 , ENABLE);
/*-----------------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None ;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = NOFCHANEL ;
ADC_Init(ADC_x, &ADC_InitStructure);
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
ADC_RegularChannelConfig(ADC_x, ADC_CHANNEL1, 1, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC_x, ADC_CHANNEL2, 2, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC_x, ADC_CHANNEL3, 3, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC_x, ADC_CHANNEL4, 4, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC_x, ADC_CHANNEL5, 5, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC_x, ADC_CHANNEL6, 6, ADC_SampleTime_55Cycles5);
ADC_DMACmd(ADC_x, ENABLE);
ADC_Cmd(ADC_x,ENABLE );
ADC_ResetCalibration(ADC_x);
while(ADC_GetResetCalibrationStatus(ADC_x));
ADC_StartCalibration(ADC_x);
while(ADC_GetCalibrationStatus(ADC_x));
ADC_SoftwareStartConvCmd(ADC_x, ENABLE);
}
void ADCx_Init(void)
{
ADC_GPIO_Config();
ADCx_GPIO_Config();
}

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