由于目前手头的开发板刚刚烧掉，无法验证如下程序，请官方查看如下程序，看是否有问题，003芯片，三通道，使用dma adc采集，开启转换后使用 while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC))判断转换完毕，后期会将while中的程序放置在TIM中断中，周期采集
#include "debug.h"
u16 TxBuf[10];
void ADC_Function_Init(void)
{
ADC_InitTypeDef ADC_InitStructure = {0};
GPIO_InitTypeDef GPIO_InitStructure = {0};
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOD, &GPIO_InitStructure);
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;//多通道需要使能，扫描模式
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//连续转换
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//没有外部触发
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 3;//转换三个通道
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 1, ADC_SampleTime_241Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 2, ADC_SampleTime_241Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 3, ADC_SampleTime_241Cycles);
ADC_Calibration_Vol(ADC1, ADC_CALVOL_50PERCENT);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
}
u16 Get_ADC_Val(u8 ch)
{
u16 val;
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_241Cycles);
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
val = ADC_GetConversionValue(ADC1);
return val;
}
void DMA_Tx_Init(DMA_Channel_TypeDef *DMA_CHx, u32 ppadr, u32 memadr, u16 bufsize)
{
DMA_InitTypeDef DMA_InitStructure = {0};
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
DMA_DeInit(DMA_CHx);
DMA_InitStructure.DMA_PeripheralBaseAddr = ppadr;
DMA_InitStructure.DMA_MemoryBaseAddr = memadr;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = bufsize;
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_VeryHigh;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA_CHx, &DMA_InitStructure);
}
int main(void)
{
u16 i;
SystemCoreClockUpdate();
Delay_Init();
#if (SDI_PRINT == SDI_PR_OPEN)
SDI_Printf_Enable();
#else
USART_Printf_Init(115200);
#endif
printf("SystemClk:%d\r\n", SystemCoreClock);
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
ADC_Function_Init();
DMA_Tx_Init(DMA1_Channel1, (u32)&ADC1->RDATAR, (u32)TxBuf,3);
while(1)
{
DMA_Cmd(DMA1_Channel1, ENABLE);
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
ADC_SoftwareStartConvCmd(ADC1, DISABLE);
DMA_Cmd(DMA1_Channel1, DISABLE);
for(i = 0; i < 3; i++)
{
printf("%04d\r\n", TxBuf[i]);
Delay_Ms(10);
}
}
}
