void SPI_RxDma_Config(FunctionalState mode)
{
DMA_InitTypeDef DMA_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
SPI_DMACmd(SPI3,SPI_DMAReq_Rx,DISABLE);
DMA_Cmd(DMA1_Stream0,DISABLE);
DMA_DeInit(DMA1_Stream0);
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = mode;
NVIC_Init(&NVIC_InitStructure);
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t) &(SPI3->DR);
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t) &spi_dma_buffer[1][0];
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = SPI_RX_DMA;
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_Normal;
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(DMA1_Stream0,&DMA_InitStructure);
DMA_DoubleBufferModeConfig(DMA1_Stream0, (uint32_t)&spi_dma_buffer[0][0], DMA_Memory_0);
DMA_DoubleBufferModeCmd(DMA1_Stream0, mode);
DMA_ITConfig(DMA1_Stream0,DMA_IT_TC,mode);
DMA_Cmd(DMA1_Stream0,mode);
SPI_DMACmd(SPI3,SPI_DMAReq_Rx,mode);
}
/******************************************
* 函数名称：SPI2 DMA关闭
* 功能描述：
* 入口参数：
* 出口参数：
* 返 回 值：
* 全局变量：
* 调用函数：
* 描述 ：
*******************************************/
u8 SPI2_DMA_disable(void)
{
u16 time_out;
time_out = 10000;
DMA_Cmd(DMA1_Stream4,DISABLE);
SPI_DMACmd(SPI2,SPI_I2S_DMAReq_Tx,DISABLE);
/*wait until DMA disable*/
while ((DMA_GetCmdStatus(DMA1_Stream4) != DISABLE) && time_out > 0)
{
time_out --;
}
/*if the DMA can not disable, return false*/
if(time_out == 0)
{
return FALSE;
}
else
{
return TRUE;
}
}
/**
* @brief Configure DMA peripheral
* @param None
* @retval None
*/
static void DMA_Config(void)
{
/* Deinitialize DMA channels */
DMA_GlobalDeInit();
DMA_DeInit(SPI_DMAChannelRx);
DMA_SetTimeOut(0x3F);
/* DMA channel Rx of SPI Configuration */
DMA_Init(SPI_DMAChannelRx, (uint16_t)SPIBuffer_Rx, (uint16_t)SPI_DR_Address, \
RX_BUFFER_SIZE, DMA_DIR_PeripheralToMemory, DMA_Mode_Normal, \
DMA_MemoryIncMode_Inc, DMA_Priority_High, DMA_MemoryDataSize_Byte);
/* Enable the SPI Rx DMA requests */
SPI_DMACmd(SPI1, SPI_DMAReq_RX, ENABLE);
/* Enable Global DMA */
DMA_GlobalCmd(ENABLE);
/* Enable the SPI RX DMA channel */
DMA_Cmd(SPI_DMAChannelRx, ENABLE);
}
/******************************************
* 函数名称：SPI2 DMA使能
* 功能描述：
* 入口参数：
* 出口参数：
* 返 回 值：
* 全局变量：
* 调用函数：
* 描述 ：
*******************************************/
static u8 SPI2_DMA_Eable(void)
{
u16 time_out;
time_out = 10000;
/*Enable and configure the peripheral to be connected to the DMA*/
SPI_DMACmd(SPI2,SPI_I2S_DMAReq_Tx,ENABLE);
/*Enable DMA2 stream3*/
DMA_Cmd(DMA1_Stream4, ENABLE);
/*wait until DMA enable*/
while ((DMA_GetCmdStatus(DMA1_Stream4) != ENABLE) && time_out > 0)
{
time_out --;
}
/*if the DMA can not enable, return false*/
if(time_out == 0)
{
return FALSE;
}
else
{
return TRUE;
}
}
/*************************************************************************
* Function Name: SPI2_DmaTransfer
* Parameters: pInt8U pData,Int32U Size, SPI_TransferDir_t SPI_TransferDir
* Return: none
*
* Description: DMA transfer
*
*************************************************************************/
void SPI2_DmaTransfer(pInt8U pData,Int32U Size, SPI_TransferDir_t SPI_TransferDir)
{
DMA_InitTypeDef DMA_InitStructure;
Int32U Dummy = 0xFF;
// Initialize DMA Rx channel
DMA_DeInit(DMA_Channel4);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&SPI2->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (SPI_TransferDir == SPI_RECEIVE)?(Int32U)pData:(Int32U)&Dummy;
DMA_InitStructure.DMA_BufferSize = Size;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = (SPI_TransferDir == SPI_RECEIVE)?DMA_MemoryInc_Enable:DMA_MemoryInc_Disable;
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_VeryHigh;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
// Init channel
DMA_Init(DMA_Channel4, &DMA_InitStructure);
// Initialize DMA Tx channel
DMA_DeInit(DMA_Channel5);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&SPI2->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (SPI_TransferDir == SPI_TRANSMIT)?(Int32U)pData:(Int32U)&Dummy;
DMA_InitStructure.DMA_BufferSize = Size;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = (SPI_TransferDir == SPI_TRANSMIT)?DMA_MemoryInc_Enable:DMA_MemoryInc_Disable;
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_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
// Init channel
DMA_Init(DMA_Channel5, &DMA_InitStructure);
// Enable SPI2 DMA transfer
SPI_DMACmd(SPI2,SPI_DMAReq_Rx,ENABLE);
SPI_DMACmd(SPI2,SPI_DMAReq_Tx,ENABLE);
#ifdef DMA_ERRATA
ENTR_CRT_SECTION();
// Enable channel
DMA_Cmd(DMA_Channel4,ENABLE);
DMA_Cmd(DMA_Channel5,ENABLE);
while(1)
{
if ( (DMA_GetITStatus(DMA_IT_TE4) == SET)
|| (DMA_GetITStatus(DMA_IT_TE5) == SET))
{
DMA_ClearITPendingBit(DMA_IT_GL4 | DMA_IT_GL5);
DMA_Cmd(DMA_Channel5,DISABLE);
DMA_Cmd(DMA_Channel4,DISABLE);
break;
}
if ( (DMA_GetITStatus(DMA_IT_TC4) == SET)
&& (DMA_GetITStatus(DMA_IT_TC5) == SET))
{
break;
}
};
EXT_CRT_SECTION();
#else
// set the flag DMA Transfer in progress
TransferStatus = TRUE;
DMA_ITConfig(DMA_Channel4, DMA_IT_TC | DMA_IT_TE, ENABLE);
DMA_ITConfig(DMA_Channel5, DMA_IT_TE, ENABLE);
// Enable SPI2 DMA transfer
SPI_DMACmd(SPI2,SPI_DMAReq_Rx,ENABLE);
SPI_DMACmd(SPI2,SPI_DMAReq_Tx,ENABLE);
while(TransferStatus);
#endif
// wait until SPI transmit FIFO isn't empty
while(SPI_GetFlagStatus(SPI2, SPI_FLAG_TXE)==RESET);
// wait until SPI receive FIFO isn't empty
while(SPI_GetFlagStatus(SPI2, SPI_FLAG_RXNE)==SET);
SPI_DMACmd(SPI2,SPI_DMAReq_Tx,DISABLE);
SPI_DMACmd(SPI2,SPI_DMAReq_Rx,DISABLE);
}
/*************************************************************************
* Function Name: MmcInit
* Parameters: none
* Return: none
*
* Description: Init SPI, Cart Present, Write Protect and Chip select pins
*
*************************************************************************/
void MmcInit (void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
// Enable GPIO clocks
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC, ENABLE);
// Enable SPI2 Periphery clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
// Deinitializes the SPI2
SPI_DeInit(SPI2);
// Release reset of GPIOB, GPIOC
RCC_APB2PeriphResetCmd( RCC_APB2Periph_GPIOB
| RCC_APB2Periph_GPIOC, DISABLE);
// Configure SPI2_CLK, SPI2_MOSI, SPI2_nCS1, Card Present and Write Protect pins
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin = SD_CS;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = SD_SCLK | SD_MOSI | SD_MISO;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = SD_CP | SD_WP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
// Chip select
MmcChipSelect(0);
// Spi init
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_256;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
// Enable SPI2 */
SPI_Cmd(SPI2, ENABLE);
// Clock Freq. Identification Mode < 400kHz
MmcSetClockFreq(IdentificationModeClock);
#if SPI_DMA_ENA > 0
// Enable DMA clock
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA, ENABLE);
// Clear pending interrupt
DMA_ClearITPendingBit( DMA_IT_GL4
| DMA_IT_GL5);
// Interrupts DMA enable
SPI_DMACmd(SPI2,SPI_DMAReq_Rx,DISABLE);
SPI_DMACmd(SPI2,SPI_DMAReq_Tx,DISABLE);
#ifndef DMA_ERRATA
NVIC_InitTypeDef NVIC_InitStructure;
// VIC configuration
NVIC_InitStructure.NVIC_IRQChannel = DMAChannel4_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = SPI_DMA_INTR_PRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = DMAChannel5_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = SPI_DMA_INTR_PRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
#endif
#endif // SPI_DMA_ENA > 0
}
void dma_init(void) {
dmaSema_ID = osMutexCreate(osMutex(dmaSema));
dmaComplete_ID = osSemaphoreCreate(osSemaphore(dmaComplete), 1);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
// SPI_InitTypeDef SPI_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
DMA_Cmd(DMA2_Stream0, DISABLE); //disable receiver
DMA_Cmd(DMA2_Stream3, DISABLE); //disable transmitter
DMA_DeInit(DMA2_Stream0); //place default values
DMA_DeInit(DMA2_Stream3);
DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_TCIF0); //transfer complete
DMA_ClearFlag(DMA2_Stream3, DMA_FLAG_TCIF3);
DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_TEIF0); //transfer error
DMA_ClearFlag(DMA2_Stream3, DMA_FLAG_TEIF3);
DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_FEIF0); //FIFO error
DMA_ClearFlag(DMA2_Stream3, DMA_FLAG_FEIF3);
DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_DMEIF0); //direct mode error
DMA_ClearFlag(DMA2_Stream3, DMA_FLAG_DMEIF3);
/* Start DMA2 clock */
// Configure DMA streams
DMA_InitStructure.DMA_Channel = DMA_Channel_3;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(SPI1->DR);
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_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull; //not needed
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
//receiving
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_Init(DMA2_Stream0, &DMA_InitStructure);
//sending
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
DMA_Init(DMA2_Stream3, &DMA_InitStructure);
//enable
SPI_DMACmd(SPI1, SPI_DMAReq_Rx | SPI_DMAReq_Tx, ENABLE);
//Setting up interrupt
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);
//enable receiving
DMA_ITConfig(DMA2_Stream0, DMA_IT_TC, ENABLE);
}
void SPIx_Init(SPI_Driver* SPIx)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
#ifdef SPIx_USE_DMA
DMA_InitTypeDef DMA_InitStructure;
#endif
// Enable SPI and GPIO clocks
SPIx->SPI_CLK(SPIx->SPI_Func, ENABLE);
SPIx->GPIO_CLK(SPIx->GPIO_Func, ENABLE);
// Connect SPI pins to AF
GPIO_PinAFConfig(SPIx->Gpio, SPIx->SCK_Src, SPIx->GPIO_AF_SPI);
GPIO_PinAFConfig(SPIx->Gpio, SPIx->MISO_Src, SPIx->GPIO_AF_SPI);
GPIO_PinAFConfig(SPIx->Gpio, SPIx->MOSI_Src, SPIx->GPIO_AF_SPI);
// SPI SCK/MISO/MOSI pin configuration
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = SPIx->SCK_Pin | SPIx->MISO_Pin | SPIx->MOSI_Pin;
GPIO_Init(SPIx->Gpio, &GPIO_InitStructure);
SPIx->GPIO_CS_CLK(SPIx->CS_Func, ENABLE);
// Configure GPIO PIN for Chip select
GPIO_InitStructure.GPIO_Pin = SPIx->CS_Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPIx->Gpio_CS, &GPIO_InitStructure);
// Chip DeSelect high
CHIP_DESELECT(SPIx);
//SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit(SPIx->SPI);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPIx->SPI_DataSize;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPIx->SPI_Prescaler;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPIx->SPI, &SPI_InitStructure);
SPI_CalculateCRC(SPIx->SPI, DISABLE);
//Enable SPI
SPI_Cmd(SPIx->SPI, ENABLE);
while (SPI_I2S_GetFlagStatus(SPIx->SPI, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_ReceiveData(SPIx->SPI);
#ifdef SPIx_USE_DMA
// Enable DMA clock
SPIx->DMA_CLK(SPIx->DMA_Func, ENABLE);
//Enable the SPIx_RX_DMA_CHANNEL (SPIx_RX) Interrupt
NVIC_Init(&SPIx->NVIC_DMA_TX);
//Enable the SPIx_TX_DMA_CHANNEL (SPIx_TX) Interrupt
NVIC_Init(&SPIx->NVIC_DMA_RX);
// Deinitialize DMA Streams
DMA_DeInit(SPIx->DMA_TX_Stream);
while (DMA_GetCmdStatus(SPIx->DMA_TX_Stream) != DISABLE);
DMA_Cmd(SPIx->DMA_TX_Stream, DISABLE);
DMA_DeInit(SPIx->DMA_RX_Stream);
while (DMA_GetCmdStatus(SPIx->DMA_RX_Stream) != DISABLE);
DMA_Cmd(SPIx->DMA_RX_Stream, DISABLE);
// Configure DMA Initialization Structure
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(SPIx->SPI->DR));
DMA_InitStructure.DMA_BufferSize = 0;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
// Configure TX DMA
DMA_InitStructure.DMA_Channel = SPIx->DMA_TX_CH;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
DMA_InitStructure.DMA_Memory0BaseAddr =(uint32_t)0;
DMA_Init(SPIx->DMA_TX_Stream, &DMA_InitStructure);
// Configure RX DMA
DMA_InitStructure.DMA_Channel = SPIx->DMA_RX_CH;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)0;
DMA_Init(SPIx->DMA_RX_Stream, &DMA_InitStructure);
SPI_DMACmd(SPIx->SPI, SPI_DMAReq_Rx, ENABLE);
SPI_DMACmd(SPIx->SPI, SPI_DMAReq_Tx, ENABLE);
DMA_ClearFlag(SPIx->DMA_TX_Stream, SPIx->DMA_TX_Flag);
DMA_ClearFlag(SPIx->DMA_RX_Stream, SPIx->DMA_RX_Flag);
DMA_ITConfig(SPIx->DMA_TX_Stream, DMA_IT_TC | DMA_IT_TE, ENABLE);
DMA_ITConfig(SPIx->DMA_RX_Stream, DMA_IT_TC | DMA_IT_TE, ENABLE);
DMA_Cmd(SPIx->DMA_TX_Stream, DISABLE);
DMA_Cmd(SPIx->DMA_RX_Stream, DISABLE);
#endif
}