STM32F205RE SPI DMA 传输大数据量异常

        GPIO_InitTypeDef GPIO_InitStructure;

        SPI_InitTypeDef  SPI_InitStructure;

        DMA_InitTypeDef  DMA_InitStructure;

        NVIC_InitTypeDef NVIC_InitStructure;

  

        int ii =0;

        

        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

        /*!< Enable SPI2 clocks */

        RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2,ENABLE);

        /*!< Enable GPIO clocks */

        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);

        /*!< Connect SPI pins to AF5 */

        GPIO_PinAFConfig(GPIOB, GPIO_PinSource13,GPIO_AF_SPI2);

        GPIO_PinAFConfig(GPIOB, GPIO_PinSource14,GPIO_AF_SPI2);

        GPIO_PinAFConfig(GPIOB, GPIO_PinSource15,GPIO_AF_SPI2);



        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

        GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_DOWN;

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;

        GPIO_Init(GPIOB, &GPIO_InitStructure);



        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;

        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;

        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//GPIO_PuPd_NOPULL;

        GPIO_Init(GPIOB, &GPIO_InitStructure);

        Cdfinger_BspCs_HIGH();

        //Cdfinger_Bspdelay_ms(1);

  //Cdfinger_BspCs_LOW();

        SPI_Cmd(SPI2,DISABLE);

        SPI_DeInit(SPI2);

        SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;

        SPI_InitStructure.SPI_Mode = SPI_Mode_Master;

        SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;

        SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;

        SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;

        SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;//;

        SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;

        SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;

        SPI_InitStructure.SPI_CRCPolynomial = 7;

        SPI_Init(SPI2, &SPI_InitStructure);



  memset(&cdfingerimgtxbuf[0],0x55,COMMUNICATIONLEN);

        /* DMA1 Stream0 channel4 spi tx configuration **************************************/

        DMA_DeInit(DMA1_Stream4);

        DMA_InitStructure.DMA_Channel = DMA_Channel_0;

        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(SPI2->DR);

        DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&cdfingerimgtxbuf[0];

        DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;

        DMA_InitStructure.DMA_BufferSize = COMMUNICATIONLEN;

        DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//;

        DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

        DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;

        DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;

        DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;// ;

        DMA_InitStructure.DMA_Priority = DMA_Priority_High;//DMA_Priority_Medium;//DMA_Priority_High;

        DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;//;//DMA_FIFOMode_Enable;

        DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;

        DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;

        DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;

        DMA_Init(DMA1_Stream4, &DMA_InitStructure);

  

        /* DMA1 Stream0 channel3 spi rx configuration **************************************/

        DMA_DeInit(DMA1_Stream3);

        DMA_InitStructure.DMA_Channel = DMA_Channel_0;

        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(SPI2->DR);

        DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&cdfingerimgrxbuf[0];//(uint32_t)&cdfingerimgrxbuf[0];

        DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;

        DMA_InitStructure.DMA_BufferSize =COMMUNICATIONLEN;

        DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

        DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

        DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;

        DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;

        DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;//DMA_Mode_Circular;

        DMA_InitStructure.DMA_Priority = DMA_Priority_High;//DMA_Priority_Medium;

        DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;//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(DMA1_Stream3, &DMA_InitStructure);

        //Cdfinger_BspCs_HIGH();

        

        //发送中断

        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

        NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream4_IRQn;     

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03;

        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

        NVIC_Init(&NVIC_InitStructure);

        

        //接收中断

        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

        NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream3_IRQn;     

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x04;

        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

        NVIC_Init(&NVIC_InitStructure);

        

        //SPI_TIModeCmd(SPI2,ENABLE);

        SPI_Cmd(SPI2, ENABLE);

        DMA_ITConfig(DMA1_Stream4,DMA_IT_TC,ENABLE);

        DMA_ITConfig(DMA1_Stream3,DMA_IT_TC,ENABLE);

        

  SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Tx|SPI_I2S_DMAReq_Rx, ENABLE);

        DMA_Cmd(DMA1_Stream4, ENABLE);

  DMA_Cmd(DMA1_Stream3, ENABLE);





void DMA1_Stream4_IRQHandler(void)

{

  if(DMA_GetITStatus(DMA1_Stream4,DMA_IT_TCIF4) != RESET)

  {

                DMA_ClearITPendingBit(DMA1_Stream4,DMA_IT_TCIF4);

          DMA_ClearFlag(DMA1_Stream4,DMA_IT_TCIF4);

  }

}



void DMA1_Stream3_IRQHandler(void)

{

  if(DMA_GetITStatus(DMA1_Stream3,DMA_IT_TCIF3) != RESET)

  {

                DMA_ClearITPendingBit(DMA1_Stream3,DMA_IT_TCIF3);

          DMA_ClearFlag(DMA1_Stream3,DMA_IT_TCIF3);

  }

}