STM32ADC16通道DMA通信

#include "adcdma.h" DmaValue_ DmaValue; void Dma_Init(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); RCC_ADCCLKConfig(RCC_PCLK2_Div6); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2| GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOB, &GPIO_InitStructure); ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 5, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 6, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 7, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 8, ADC_SampleTime_55Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 9, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 10, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_10,11, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_11,12, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_12,13, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_13,14, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_14,15, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_15,16, ADC_SampleTime_239Cycles5); ADC_InitTypeDef ADC_InitStructure; ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; ADC_InitStructure.ADC_ScanConvMode = ENABLE; ADC_InitStructure.ADC_NbrOfChannel = 16; ADC_Init(ADC1, &ADC_InitStructure); DMA_InitTypeDef DMA_InitStructure; DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)DmaValue.AD_Value; DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; DMA_InitStructure.DMA_BufferSize = 16; DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; DMA_Init(DMA1_Channel1, &DMA_InitStructure); DMA_Cmd(DMA1_Channel1, ENABLE); ADC_DMACmd(ADC1, ENABLE); ADC_Cmd(ADC1, ENABLE); ADC_ResetCalibration(ADC1); while (ADC_GetResetCalibrationStatus(ADC1) == SET); ADC_StartCalibration(ADC1); while (ADC_GetCalibrationStatus(ADC1) == SET); ADC_SoftwareStartConvCmd(ADC1, ENABLE); }