使用uC2.86
ADC使用DMA中断的模式,在DMA1_CH1 初始化以及 中断 都没问题,都可以进中断,
但是改成 DMA1_CH4 就再也不进中断了,为什么??
难道 DR_ADDRESS 地址不对?? RCC,等其他设置应该都没问题请大家看下我的初始化函数。谢谢!
也已经看过STM32的手册页初始化步骤都没错!
void AD_DMA_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
// DMA1 channel1 configuration
// DMA_DeInit(DMA1_Channel1);
DMA_DeInit(DMA1_Channel4);
DMA_InitStructure.DMA_PeripheralBaseAddr = DR_ADDRESS;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_MEM;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 7;
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_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
// DMA_Init(DMA1_Channel1, &DMA_InitStructure);
DMA_Init(DMA1_Channel4, &DMA_InitStructure);
// Enable DMA1 channel1
// DMA_Cmd(DMA1_Channel1, ENABLE);
DMA_Cmd(DMA1_Channel4, ENABLE);
// DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
DMA_ITConfig(DMA1_Channel4, DMA1_IT_TC4, ENABLE);
// ADC1 configuration ------------------------------------------------------
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
// ADC1 regular channels configuration
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 5, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 2, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 3, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 4, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 6, ADC_SampleTime_55Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 7, ADC_SampleTime_55Cycles5);
// Enable ADC1 DMA
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
// Enable ADC1 reset calibaration register
ADC_ResetCalibration(ADC1);
// Check the end of ADC1 reset calibration register
while(ADC_GetResetCalibrationStatus(ADC1));
// Start ADC1 calibaration
ADC_StartCalibration(ADC1);
// Check the end of ADC1 calibration
while(ADC_GetCalibrationStatus(ADC1));
// BSP_IntVectSet ( BSP_INT_ID_DMA1_CH1, DMA1_Channel1_IRQHandler) ;
BSP_IntVectSet ( BSP_INT_ID_DMA1_CH4, DMA1_Channel4_IRQHandler) ;
} |