如题，程序能进入DMA中断，但是对中断程序里的if判断语句不对，不执行if后面的语句。找了一两天了还是没找到问题所在，求各路大神帮助，谢谢。第一次发帖，有什么不对的请见谅
以下为配置代码
GPIO初始化
void ADC_GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOA GPIOC clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1| GPIO_Pin_2| GPIO_Pin_3;//PA3->PR
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; //
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
----------------------------------------------------------------------------------------------------------
中断分组
#if 1
static void DMA_NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure one bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
#endif
----------------------------------------------------------------------------------------------
定时器配置
static void TIM3_Configuration(void) //ADC采样定时器
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
/* Enable TIM3 clock */
RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIM3, ENABLE);
TIM_DeInit(TIM3);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); //把TIM_TimeBaseStructure中的每一个参数按缺省值填入
TIM_TimeBaseStructure.TIM_Period = 7500-1; //自动装载周期
TIM_TimeBaseStructure.TIM_Prescaler = 0; //时钟预分频
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //不分割时钟30MHz
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //定时250us，ADC采样率为4k
TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_Update);
TIM_Cmd(TIM3, ENABLE);
}
----------------------------------------------------------------------------------------------------------
ADC 和 DMA 的配置
static void ADC1_Configuration(void)
{
DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
/* Enable DMA2 、ADC1 clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
#if 1
/* DMA2_Stream0_Channel_0 Configuration ------------------------------*/
DMA_DeInit(DMA2_Stream0);
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&ADC1->DR); //DAC1转换完成后的数据存放地址
DMA_InitStructure.DMA_Memory0BaseAddr = (u32)ADC_ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = CHANNEL_BUF_TOTAL_SIZE;
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_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream0, &DMA_InitStructure);
DMA_NVIC_Config();
DMA_ITConfig(DMA2_Stream0,DMA_IT_TC|DMA_IT_HT,ENABLE);
DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_HTIF0 | DMA_FLAG_TCIF0);
/* Enable DMA2 steam0 */
DMA_Cmd(DMA2_Stream0, ENABLE);
#endif
/* Common configuration (applicable for the three ADCs) ******/
/* Single ADC mode */
ADC_CommonInitStructure.ADC_Mode = ADC_TripleMode_RegSimult;//ADC_Mode_Independent;
/* ADCCLK = PCLK2/4 */
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4; //对60MHz进行4分频
/* Available only for multi ADC mode */
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled ;//ADC_DMAAccessMode_2 ADC_DMAAccessMode_Disabled
/* Delay between 2 sampling phases */
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
/* Configure ADC1 to convert continously channel14 ***********/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode =DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_TRGO; // ADC_ExternalTrigConv_T3_CC1
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising; //ADC_ExternalTrigConvEdge_Rising ADC_ExternalTrigConvEdge_None
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = CHANNEL_SIZE;//;
ADC_Init(ADC1, &ADC_InitStructure);
// P
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 8, ADC_SampleTime_56Cycles); //8
#if 1
// T
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 7, ADC_SampleTime_56Cycles);
// 1
ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 6, ADC_SampleTime_56Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 5, ADC_SampleTime_56Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 4, ADC_SampleTime_56Cycles);
// 2
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_56Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 2, ADC_SampleTime_56Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_56Cycles);
/*Enables or disables the ADC DMA request after last transfer(Single-ADC mode)*/
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
/* Enables or disables the specified ADCx DMA request */
#endif
// ADC_ITConfig(ADC1,ADC_IT_EOC,ENABLE);
// ADC_ClearFlag(ADC1,ADC_FLAG_EOC);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
// ADC_SoftwareStartConv(ADC1);
}
--------------------------------------------------------------------------------------------------------
DMA中断处理函数
void DMA2_Stream0_IRQHandler(void)
{
if(DMA_GetITStatus(DMA2_Stream0,DMA_FLAG_TCIF0) != RESET )//全中断
{
DMA_ClearFlag ( DMA2_Stream0,DMA_FLAG_TCIF0);
UpackAdcDate(ADC_ConvertedValue,CHANNEL_HALF_BUF_SIZE,CHANNEL_HALF_BUF_SIZE);
}
else if(DMA_GetITStatus(DMA2_Stream0,DMA_FLAG_HTIF0) != RESET )//半中断
{
DMA_ClearFlag(DMA2_Stream0,DMA_FLAG_HTIF0);
UpackAdcDate(ADC_ConvertedValue,0,CHANNEL_HALF_BUF_SIZE);
}
} |
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