STM32F407 ADC 用定时器触发DMA传送问题
#define ADC_CDR_ADDRESS ((uint32_t)0x40012308)#define ADC_Buffer_Size 1024
__IO uint32_t ADC_Buffer;
void ADC_init(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDefTIM_TimeBaseStructure;
TIM_OCInitTypeDefTIM_OCInitStructure;
/* Enable peripheral clocks */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOC |RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2 |
RCC_APB2Periph_ADC3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
/* Time base configuration */
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 4512;
TIM_TimeBaseStructure.TIM_Prescaler = 0x4;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/* TIM1 channel1 configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0x7F;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_ARRPreloadConfig(TIM1, ENABLE);
TIM_OC1PreloadConfig (TIM1, TIM_OCPreload_Enable);
//TIM1->CR2 =0x00;
//TIM1->SMCR = 0x00;
//TIM1->DIER = 0x00;
/* Configure ADC Channel 12 pin as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure ADC Channel 12 pin as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* DMA2 Stream0 channel0 configuration */
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC_CDR_ADDRESS;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC_Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = ADC_Buffer_Size;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
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_Stream0, &DMA_InitStructure);
/* Enable the DMA7 Interrupt*/
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* DMA2_Stream0 enable */
DMA_ClearITPendingBit(DMA2_Stream0,DMA_IT_TC);
DMA_ITConfig(DMA2_Stream0,DMA_IT_TC,ENABLE);
DMA_Cmd(DMA2_Stream0, ENABLE);
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);
/******************************************************************************/
/*ADCs configuration: triple interleaved with 5cycles delay to reach 6Msps*/
/******************************************************************************/
/* ADC Common configuration *************************************************/
ADC_CommonInitStructure.ADC_Mode = ADC_TripleMode_RegSimult;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_2;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInit(&ADC_CommonInitStructure);
/* ADC1 regular channel 12 configuration ************************************/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 3;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_6,3, ADC_SampleTime_15Cycles);
/* ADC2 regular channel 12 configuration ************************************/
ADC_Init(ADC2, &ADC_InitStructure);
/* ADC2 regular channel12 configuration */
ADC_RegularChannelConfig(ADC2, ADC_Channel_11, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_13, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_7,3, ADC_SampleTime_15Cycles);
/* ADC3 regular channel 12 configuration ************************************/
ADC_Init(ADC3, &ADC_InitStructure);
/* ADC3 regular channel12 configuration */
ADC_RegularChannelConfig(ADC3, ADC_Channel_10, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC3, ADC_Channel_12, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC3, ADC_Channel_13, 3, ADC_SampleTime_15Cycles);
/* Enable DMA request after last transfer (multi-ADC mode) ******************/
ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE);
/* Enable ADC1 **************************************************************/
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC2 **************************************************************/
ADC_Cmd(ADC2, ENABLE);
/* Enable ADC3 **************************************************************/
ADC_Cmd(ADC3, ENABLE);
/* TIM1 counter enable */
TIM_Cmd(TIM1,ENABLE);
/* TIM1 main Output Enable */
TIM_CtrlPWMOutputs(TIM1,ENABLE);
}
程序运行时，DMA中断只开始运行时发生一次，就在没有了，不知那设置错了，请各位指教！
RE:STM32F407 ADC 用定时器触发DMA传送问题
香版主，看看能否帮忙？RE:STM32F407 ADC 用定时器触发DMA传送问题
问题解决ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_2;
RE:STM32F407 ADC 用定时器触发DMA传送问题
支持:DRE:STM32F407 ADC 用定时器触发DMA传送问题
/* Includes ------------------------------------------------------------------*/#include "stm32f10x.h"
#include "SysTick\\systick.h"
#include
#include "USART\\usart.h"
/* Private define ------------------------------------------------------------*/
#define ADC1_DR_Address ((u32)0x4001244C)
#defineN 100 //每通道采100次
#defineM 6 //为2个通道
/* Private function prototypes -----------------------------------------------*/
void USART_Configuration(void);
void ADC_Configuration(void);
void filter(void);
u16 GetVolt(u16 advalue) ;
/* Private variables ---------------------------------------------------------*/
vu16 ADC_ConvertedValue;
vu16AD_Value; //用来存放ADC转换结果，也是DMA的目标地址
vu16After_filter; //用来存放求平均值之后的结果
inti;
int main(void)
{
u16 value;
Delay_Init();
USART_Configuration();
ADC_Configuration();
printf("\r\n****************************************************************\r\n");
/* Infinite loop */
while (1)
{
filter();
for(i=0;i
回复:STM32F407 ADC 用定时器触发DMA传送问题
:P:P:P谢谢RE:STM32F407 ADC 用定时器触发DMA传送问题
没用过407，能不能赚1分~~ 遇到了同样的问题 请问楼主怎么解决的啊 :D:D:D:D:D:D 可能是DMA中断服务函数配置有问题或者采集过程中发生OVR溢出错误，如果是前者：//ADC1的DMA数据流中断服务函数
void DMA2_Stream0_IRQHandler(void)
{
u16 i;
if(DMA_GetFlagStatus(DMA_STREAMx_ADC1 ,DMA_FLAG_TCIF0)!=RESET)
{
ADC_DMARequestAfterLastTransferCmd(ADC1x , DISABLE);
ADC_DMACmd(ADC1x , DISABLE);
DMA_Cmd(DMA_STREAMx_ADC1, DISABLE);
while (DMA_GetCmdStatus(DMA_STREAMx_ADC1) != DISABLE){}//等待DMA可配
for(i=0; i<ADC1_DataNum; i++)
{
uwADC1xConvertedVoltage = uhADC1xConvertedValue * 3300/0xFFF;
printf("\r\n通道ADC_Channel_1 采样电压为 ::");
USART_ShowxNum(uwADC1xConvertedVoltage, 4);
}
printf("\r\n-------------------");
ADC1DataProcess_Amp(uhADC1xConvertedValue, PGA1_GAIN);
DMA_ClearFlag(DMA_STREAMx_ADC1,DMA_FLAG_TCIF0);
DMA_SetCurrDataCounter(DMA_STREAMx_ADC1,ADC1_DataNum);//数据传输量
DMA_Cmd(DMA_STREAMx_ADC1, ENABLE);
ADC_DMARequestAfterLastTransferCmd(ADC1x , ENABLE);
ADC_DMACmd(ADC1x , ENABLE);
}
}
如果是后者，需要在检测到溢出后，再次从溢出状态恢复，恢复过程看数据手册有关OVR部分内容。
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