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STM32F407標(biāo)準(zhǔn)庫(kù)，SPI DMA中斷方式收發(fā)數(shù)據(jù)，怎么也調(diào)不通，一進(jìn)DMA收發(fā)中斷程序死了～（等待方式?jīng)]有問(wèn)題），下面是代碼，請(qǐng)高手哥哥姐姐幫忙，謝謝！
//STM32F407標(biāo)準(zhǔn)庫(kù)，SPI DMA中斷方式收發(fā)數(shù)據(jù)，怎么也調(diào)不通，一進(jìn)DMA收發(fā)中斷程序就...
#define SPI1_RX_LEN 2000
#define SPI1_TX_LEN 2000
#define SPI1_DR_ADDR (uint32_t)0x4001300C
unsigned char SPI1_RX_BUFFER[SPI1_RX_LEN]={0};
unsigned char SPI1_TX_BUFFER[SPI1_TX_LEN]={0};
//函數(shù)名：初始化SPI接口
void SPI1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOD, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE); //使能SPI1時(shí)鐘
GPIO_InitStructure.GPIO_Pin = SPI1_NSS_Pin; //IO
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //標(biāo)準(zhǔn)功能
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
GPIO_Init(SPI1_NSS_GPIO_Port, &GPIO_InitStructure); //初始化
SPI1_NSS_Set(); //NSS高
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7; //PA5\6\7復(fù)用功能輸出
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //復(fù)用功能
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
GPIO_Init(GPIOA, &GPIO_InitStructure); //初始化
GPIO_PinAFConfig(GPIOA,GPIO_PinSource5,GPIO_AF_SPI1); //PB3復(fù)用為 SPI1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource6,GPIO_AF_SPI1); //PB4復(fù)用為 SPI1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource7,GPIO_AF_SPI1); //PB5復(fù)用為 SPI1
//只針對(duì)SPI口初始化
RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1,ENABLE); //復(fù)位SPI1
RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1,DISABLE); //停止復(fù)位SPI1
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //設(shè)置SPI單向或者雙向的數(shù)據(jù)模式:SPI設(shè)置為雙線雙向全雙工
SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //設(shè)置SPI工作模式:設(shè)置為主SPI
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //設(shè)置SPI的數(shù)據(jù)大小:SPI發(fā)送接收8位幀結(jié)構(gòu)
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; //串行同步時(shí)鐘的空閑狀態(tài)為高電平
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; //串行同步時(shí)鐘的第二個(gè)跳變沿（上升或下降）數(shù)據(jù)被采樣
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSS信號(hào)由硬件（NSS管腳）還是軟件（使用SSI位）管理:內(nèi)部NSS信號(hào)有SSI位控制
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; //定義波特率預(yù)分頻的值:波特率預(yù)分頻值為2:42M;4:21M;8:10.5M;16:5.25M
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //指定數(shù)據(jù)傳輸從MSB位還是LSB位開(kāi)始:數(shù)據(jù)傳輸從MSB位開(kāi)始
SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC值計(jì)算的多項(xiàng)式
SPI_Init(SPI1, &SPI_InitStructure); //根據(jù)SPI_InitStruct中指定的參數(shù)初始化外設(shè)SPIx寄存器
SPI_Cmd(SPI1, ENABLE); //使能SPI外設(shè)
spi1_dma_init(41,41); //DMA初始化
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Tx, ENABLE);
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Rx, ENABLE);
}
void spi1_dma_init(unsigned short RXSize,unsigned short TXSize)
{
DMA_InitTypeDef DMA_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/*DMA2*/
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
/* DMA RX config */
DMA_InitStructure.DMA_Channel = DMA_Channel_3; //DMA 通道
DMA_InitStructure.DMA_PeripheralBaseAddr = SPI1_DR_ADDR; //外設(shè)地址
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)SPI1_RX_BUFFER; //接收緩沖區(qū)（內(nèi)存中的有一個(gè)數(shù)組）
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; //DMA 傳輸方向
DMA_InitStructure.DMA_BufferSize = RXSize; //DMA 傳輸?shù)臄?shù)量 這個(gè)后期還可以再改
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外設(shè)地址自增 取消
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //內(nèi)存地址自增 使能
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; //傳輸?shù)?單位 （byte 8bit）
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //傳輸?shù)?單位 （byte 8bit）
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //普通模式 傳輸完成一次就自動(dòng)結(jié)束
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; //優(yōu)先級(jí) 中等
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable; //不使用 FIFO
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; //
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; //
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream2, &DMA_InitStructure); //初始化
/* DMA TX Config */
DMA_InitStructure.DMA_Channel = DMA_Channel_3; //DMA 通道
DMA_InitStructure.DMA_PeripheralBaseAddr = SPI1_DR_ADDR; //外設(shè)地址
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)SPI1_TX_BUFFER; //接收緩沖區(qū)（內(nèi)存中的有一個(gè)數(shù)組）
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral; //DMA傳輸方向
DMA_InitStructure.DMA_BufferSize = TXSize; //DMA傳輸?shù)臄?shù)量 這個(gè)后期還可以再改
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外設(shè)地址自增 取消
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //內(nèi)存地址自增 使能
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; //傳輸?shù)?單位 （byte 8bit）
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //傳輸?shù)?單位 （byte 8bit）
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //普通模式 傳輸完成一次就自動(dòng)結(jié)束
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; //優(yōu)先級(jí) 中等
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_Stream3, &DMA_InitStructure); //初始化
//DMA中斷方式發(fā)送
DMA_ITConfig(DMA2_Stream3, DMA_IT_TC, ENABLE); //DMA發(fā)送中斷開(kāi)
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
DMA_ClearITPendingBit(DMA2_Stream3, DMA_IT_TCIF3);
//DMA中斷方式接收
DMA_ITConfig(DMA2_Stream2, DMA_IT_TC, ENABLE); //DMA接收中斷開(kāi)
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TCIF2);
}
//讀寫數(shù)據(jù)調(diào)用此函數(shù)
void spi1_trans(unsigned char *rx_buf, unsigned char *tx_buf, unsigned short length)
{
DMA_Cmd(DMA2_Stream2, DISABLE); //關(guān)閉DMA
DMA_Cmd(DMA2_Stream3, DISABLE); //關(guān)閉DMA
DMA_SetCurrDataCounter(DMA2_Stream2, (unsigned short)length); //設(shè)置DMA的傳輸參數(shù)
DMA_SetCurrDataCounter(DMA2_Stream3, (unsigned short)length); //設(shè)置DMA的傳輸參數(shù)
DMA2_Stream2->M0AR = (uint32_t)rx_buf; //設(shè)置內(nèi)存的起始地址
DMA2_Stream3->M0AR = (uint32_t)tx_buf; //設(shè)置內(nèi)存的起始地址
SPI1->DR;
//while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); //等待先前的發(fā)送完畢
DMA_Cmd(DMA2_Stream2, ENABLE); //打開(kāi)DMA開(kāi)始發(fā)送
DMA_Cmd(DMA2_Stream3, ENABLE); //打開(kāi)DMA開(kāi)始接收
//while( DMA_GetFlagStatus(DMA2_Stream3, DMA_FLAG_TCIF3) == RESET); //等待數(shù)據(jù)發(fā)送完
//while( DMA_GetFlagStatus(DMA2_Stream2, DMA_FLAG_TCIF2) == RESET); //等待
//DMA_Cmd(DMA2_Stream2, DISABLE); //發(fā)送完關(guān)閉DMA
//DMA_Cmd(DMA2_Stream3, DISABLE); //發(fā)送完關(guān)閉DMA
//DMA_ClearFlag(DMA2_Stream2, DMA_FLAG_TCIF2); //清楚標(biāo)志位
//DMA_ClearFlag(DMA2_Stream3, DMA_FLAG_TCIF3); //清楚標(biāo)志位
}
//發(fā)送中斷
void DMA2_Stream2_IRQHandler(void)
{
// 清除DMA發(fā)送完成標(biāo)志
if(DMA_GetITStatus(DMA2_Stream2, DMA_IT_TCIF2)!= RESET)
{
// 清除DMA發(fā)送完成標(biāo)志
DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TCIF2);
DMA_Cmd(DMA2_Stream2, DISABLE);
u1_printf("S2_TX_IRQ\r\n");
}
// 傳輸錯(cuò)誤中斷
if(DMA_GetITStatus(DMA2_Stream2, DMA_IT_TEIF2) != RESET)
{
DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TEIF2);
u1_printf("S2_err_TEIF2\r\n");
}
}
//接收中斷
void DMA2_Stream3_IRQHandler(void)
{
// 清除DMA發(fā)送完成標(biāo)志
if(DMA_GetITStatus(DMA2_Stream3, DMA_IT_TCIF3)!= RESET)
{
DMA_ClearITPendingBit(DMA2_Stream3, DMA_IT_TCIF3);
DMA_Cmd(DMA2_Stream3, DISABLE);
u1_printf("S3_RX_IRQ\r\n");
}
// 傳輸錯(cuò)誤中斷
if(DMA_GetITStatus(DMA2_Stream3, DMA_IT_TEIF3) != RESET)
{
DMA_ClearITPendingBit(DMA2_Stream3, DMA_IT_TEIF3);
u1_printf("S3_err_TEIF3\r\n");
}
}
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