stm32f4+timer+dma+adc

#include "ADC.h" void ALL_ADC_Init(void) { ADCInit_GPIO(); ADC_Config(); DMA_Config(DMA2_Stream0,DMA_Channel_0,(uint32_t)(&ADC1->DR),(uint32_t)&ADC_Raw,DMA_DIR_PeripheralToMemory,N*M,DMA_Priority_High,DMA_PeripheralDataSize_HalfWord,DMA_MemoryDataSize_HalfWord); NVIC_Config(); Timer_Init(); bsp_InitAdc2(); } /******************************************************************************* * 函数名 : Get_ADC_Value * function : 获取各个通道的转换值 *******************************************************************************/ void Get_ADC_Value(void) { int i=0,j=0; uint32_t value3=0; uint16_t max=0,min=0; float value4=0; for(j=0;j<M;j++) { value3=0; min=ADC_Raw[0][j]; max=ADC_Raw[0][j]; for(i=0;i<N;i++) { if(min>=ADC_Raw[i][j]) min=ADC_Raw[i][j]; if(max<=ADC_Raw[i][j]) max=ADC_Raw[i][j]; value3+=ADC_Raw[i][j]; } value4=((float)(value3)-(float)(min)-(float)(max))/(N-2)*3.3/4096.0; ADC_Cov[j]=value4*100.0; } } void DMA_Config(DMA_Stream_TypeDef *DMA_Streamx,uint32_t chx,uint32_t par,uint32_t mar,uint32_t dir,uint16_t ndtr,uint32_t pri,uint32_t PeripheralDataSize,uint32_t MemoryDataSize) { DMA_InitTypeDef DMA_InitStructure; if((u32)DMA_Streamx>(u32)DMA2) //µÃµ½µ±Ç°streamÊÇÊôÓÚDMA2»¹ÊÇDMA1 { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE); //DMA2ʱÖÓʹÄÜ } else { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE); //DMA1ʱÖÓʹÄÜ } DMA_DeInit(DMA_Streamx); while (DMA_GetCmdStatus(DMA_Streamx) != DISABLE){} //µÈ´ýDMA¿ÉÅäÖà /* ÅäÖà DMA Stream */ DMA_InitStructure.DMA_Channel = chx; //ͨµÀÑ¡Ôñ DMA_InitStructure.DMA_PeripheralBaseAddr = par; //DMAÍâÉèµØÖ· DMA_InitStructure.DMA_Memory0BaseAddr = mar; //DMA ´æ´¢Æ÷0µØÖ· DMA_InitStructure.DMA_DIR = dir; //ÍâÉèµ½ÄÚ´æ DMA_InitStructure.DMA_BufferSize = ndtr; //Êý¾Ý´«ÊäÁ¿ DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //ÍâÉè·ÇÔöÁ¿Ä£Ê½ DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //´æ´¢Æ÷ÔöÁ¿Ä£Ê½ DMA_InitStructure.DMA_PeripheralDataSize = PeripheralDataSize; //ÍâÉèÊý¾Ý³¤¶È:16λ DMA_InitStructure.DMA_MemoryDataSize = MemoryDataSize; //´æ´¢Æ÷Êý¾Ý³¤¶È:16λ DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //ʹÓÃÑ­»·Ä£Ê½ DMA_InitStructure.DMA_Priority = pri; //ÓÅÏȼ¶ DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable; DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; //´æ´¢Æ÷Í»·¢µ¥´Î´«Êä DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; //ÍâÉèÍ»·¢µ¥´Î´«Êä DMA_Init(DMA_Streamx, &DMA_InitStructure); //³õʼ»¯DMA Stream /* DMA2_Stream0 enable */ DMA_ClearITPendingBit(DMA_Streamx, DMA_IT_TC); DMA_ITConfig(DMA_Streamx, DMA_IT_TC, ENABLE); if(dir==DMA_DIR_PeripheralToMemory)DMA_Cmd(DMA_Streamx, ENABLE); } void DMA_Normal_Config(DMA_Stream_TypeDef *DMA_Streamx,uint32_t chx,uint32_t par,uint32_t mar,uint32_t dir,uint16_t ndtr,uint32_t pri,uint32_t PeripheralDataSize,uint32_t MemoryDataSize) { DMA_InitTypeDef DMA_InitStructure; if((u32)DMA_Streamx>(u32)DMA2) //µÃµ½µ±Ç°streamÊÇÊôÓÚDMA2»¹ÊÇDMA1 { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE); //DMA2ʱÖÓʹÄÜ } else { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE); //DMA1ʱÖÓʹÄÜ } DMA_DeInit(DMA_Streamx); while (DMA_GetCmdStatus(DMA_Streamx) != DISABLE){} //µÈ´ýDMA¿ÉÅäÖà /* ÅäÖà DMA Stream */ DMA_InitStructure.DMA_Channel = chx; //ͨµÀÑ¡Ôñ DMA_InitStructure.DMA_PeripheralBaseAddr = par; //DMAÍâ�