[问答]

stm32H743 HAL库SPI+DMA一主机多从机数据传输，DMA异常中断的原因？

问答对人有帮助，内容完整，我也想知道答案 0 STM32H743 HAL库 SPI+DMA一主机多从机数据传输，使用HAL_SPI_TransmitReceive_DMA函数，随机性的MOSI返回数据末尾缺一段，导致DMA异常中断，下面是主机和从机SPI部分的配置，有什么错误的地方吗？主机： void HAL_SPI_MspInit(SPI_HandleTypeDef hspi) { GPIO_InitTypeDef GPIO_InitStruct; if (hspi->Instance == SPIx) { /##-1- Enable peripherals and GPIO Clocks #################################/ / Enable GPIO TX/RX clock / SPIx_SCK_GPIO_CLK_ENABLE(); SPIx_MISO_GPIO_CLK_ENABLE(); SPIx_MOSI_GPIO_CLK_ENABLE(); / Enable SPI1 clock / SPIx_CLK_ENABLE(); / Enable DMA clock / DMAx_CLK_ENABLE(); /##-2- Configure peripheral GPIO ##########################################/ / SPI SCK GPIO pin configuration / GPIO_InitStruct.Pin = SPIx_SCK_PIN; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = SPIx_SCK_AF; HAL_GPIO_Init(SPIx_SCK_GPIO_PORT, GPIO_InitStruct); / SPI MOSI GPIO pin configuration / GPIO_InitStruct.Pin = SPIx_MOSI_PIN; GPIO_InitStruct.Alternate = SPIx_MOSI_AF; HAL_GPIO_Init(SPIx_MOSI_GPIO_PORT, GPIO_InitStruct); / SPI MISO GPIO pin configuration / // GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; GPIO_InitStruct.Pin = SPIx_MISO_PIN; GPIO_InitStruct.Alternate = SPIx_MISO_AF; HAL_GPIO_Init(SPIx_MISO_GPIO_PORT, GPIO_InitStruct); /##-3- Configure the DMA ##################################################/ /##-3- Configure the DMA ##################################################/ / Configure the DMA handler for Transmission process / hdma_tx.Instance = SPIx_TX_DMA_STREAM; hdma_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_tx.Init.MemBurst = DMA_MBURST_INC4; hdma_tx.Init.PeriphBurst = DMA_PBURST_INC4; hdma_tx.Init.Request = SPIx_TX_DMA_REQUEST; hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH; hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_tx.Init.MemInc = DMA_MINC_ENABLE; hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_tx.Init.Mode = DMA_NORMAL; hdma_tx.Init.Priority = DMA_PRIORITY_LOW; HAL_DMA_Init( hdma_tx); / Associate the initialized DMA handle to the the SPI handle / __HAL_LINKDMA(hspi, hdmatx, hdma_tx); / Configure the DMA handler for Transmission process / hdma_rx.Instance = SPIx_RX_DMA_STREAM; hdma_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_rx.Init.MemBurst = DMA_MBURST_INC4; hdma_rx.Init.PeriphBurst = DMA_PBURST_INC4; hdma_rx.Init.Request = SPIx_RX_DMA_REQUEST; hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_rx.Init.Mode = DMA_NORMAL; hdma_rx.Init.Priority = DMA_PRIORITY_HIGH; HAL_DMA_Init( hdma_rx); / Associate the initialized DMA handle to the the SPI handle / __HAL_LINKDMA(hspi, hdmarx, hdma_rx); /##-4- Configure the NVIC for DMA #########################################/ / NVIC configuration for DMA transfer complete interrupt (SPI1_TX) / HAL_NVIC_SetPriority(SPIx_DMA_TX_IRQn, 6, 0); HAL_NVIC_EnableIRQ(SPIx_DMA_TX_IRQn); / NVIC configuration for DMA transfer complete interrupt (SPI1_RX) / HAL_NVIC_SetPriority(SPIx_DMA_RX_IRQn, 6, 0); HAL_NVIC_EnableIRQ(SPIx_DMA_RX_IRQn); /##-5- Configure the NVIC for SPI #########################################/ / NVIC configuration for SPI transfer complete interrupt (SPI1) / HAL_NVIC_SetPriority(SPIx_IRQn, 6, 0); HAL_NVIC_EnableIRQ(SPIx_IRQn); } } static void BTB_SPIConfig(void) { /##-1- Configure the SPI peripheral #######################################/ / Set the SPI parameters / SpiHandle.Instance = SPIx; SpiHandle.Init.BaudRatePrescaler =SPI_BAUDRATEPRESCALER_32; SpiHandle.Init.Direction = SPI_DIRECTION_2LINES; SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE; SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW; SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT; SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB; SpiHandle.Init.TIMode = SPI_TIMODE_DISABLE; SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; SpiHandle.Init.CRCPolynomial = 7; SpiHandle.Init.CRCLength = SPI_CRC_LENGTH_8BIT; SpiHandle.Init.NSS = SPI_NSS_SOFT; SpiHandle.Init.NSSPMode = SPI_NSS_PULSE_DISABLE; SpiHandle.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_ENABLE; SpiHandle.Init.IOSwap=SPI_IO_SWAP_ENABLE; //引脚画错了，交换下 // SpiHandle.Init.MasterSSIdleness = SPI_MASTER_SS_IDLENESS_15CYCLE; SpiHandle.Init.Mode = SPI_MODE_MASTER; // SpiHandle.Init.MasterInterDataIdleness=SPI_MASTER_INTERDATA_IDLENESS_15CYCLE; if(HAL_SPI_Init( SpiHandle) != HAL_OK) { / Initialization Error / // Error_Handler(); } } 从机： void HAL_SPI_MspInit(SPI_HandleTypeDef hspi) { GPIO_InitTypeDef GPIO_InitStruct; if (hspi->Instance == SPIx) { /##-1- Enable peripherals and GPIO Clocks #################################/ /* Enable GPIO TX/RX clock / SPIx_CS_GPIO_CLK_ENABLE(); SPIx_SCK_GPIO_CLK_ENABLE(); SPIx_MISO_GPIO_CLK_ENABLE(); SPIx_MOSI_GPIO_CLK_ENABLE(); / Enable SPI1 clock / SPIx_CLK_ENABLE(); / Enable DMA clock / DMAx_CLK_ENABLE(); /##-2- Configure peripheral GPIO ##########################################/ / SPI SCK GPIO pin configuration / GPIO_InitStruct.Pin = SPIx_SCK_PIN; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = SPIx_SCK_AF; HAL_GPIO_Init(SPIx_SCK_GPIO_PORT, GPIO_InitStruct); / SPI CS GPIO pin configuration / GPIO_InitStruct.Pin = SPIx_CS_PIN; GPIO_InitStruct.Alternate = SPIx_CS_AF; HAL_GPIO_Init(SPIx_CS_GPIO_PORT, GPIO_InitStruct); / SPI MOSI GPIO pin configuration / GPIO_InitStruct.Pin = SPIx_MOSI_PIN; GPIO_InitStruct.Alternate = SPIx_MOSI_AF; HAL_GPIO_Init(SPIx_MOSI_GPIO_PORT, GPIO_InitStruct); / SPI MISO GPIO pin configuration / // GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; //按照手册从机本该配置成开漏模式，但不知为什么会导致数据为0 GPIO_InitStruct.Pin = SPIx_MISO_PIN; GPIO_InitStruct.Alternate = SPIx_MISO_AF; HAL_GPIO_Init(SPIx_MISO_GPIO_PORT, GPIO_InitStruct); /##-3- Configure the DMA ##################################################/ /##-3- Configure the DMA ##################################################/ / Configure the DMA handler for Transmission process / hdma_tx.Instance = SPIx_TX_DMA_STREAM; hdma_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_tx.Init.MemBurst = DMA_MBURST_INC4; hdma_tx.Init.PeriphBurst = DMA_PBURST_INC4; hdma_tx.Init.Request = SPIx_TX_DMA_REQUEST; hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH; hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_tx.Init.MemInc = DMA_MINC_ENABLE; hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_tx.Init.Mode = DMA_NORMAL; hdma_tx.Init.Priority = DMA_PRIORITY_LOW; HAL_DMA_Init( hdma_tx); / Associate the initialized DMA handle to the the SPI handle / __HAL_LINKDMA(hspi, hdmatx, hdma_tx); / Configure the DMA handler for Transmission process / hdma_rx.Instance = SPIx_RX_DMA_STREAM; hdma_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_rx.Init.MemBurst = DMA_MBURST_INC4; hdma_rx.Init.PeriphBurst = DMA_PBURST_INC4; hdma_rx.Init.Request = SPIx_RX_DMA_REQUEST; hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_rx.Init.Mode = DMA_NORMAL; hdma_rx.Init.Priority = DMA_PRIORITY_HIGH; HAL_DMA_Init( hdma_rx); / Associate the initialized DMA handle to the the SPI handle / __HAL_LINKDMA(hspi, hdmarx, hdma_rx); /##-4- Configure the NVIC for DMA #########################################/ / NVIC configuration for DMA transfer complete interrupt (SPI1_TX) / HAL_NVIC_SetPriority(SPIx_DMA_TX_IRQn, 6, 0); HAL_NVIC_EnableIRQ(SPIx_DMA_TX_IRQn); / NVIC configuration for DMA transfer complete interrupt (SPI1_RX) / HAL_NVIC_SetPriority(SPIx_DMA_RX_IRQn, 6, 0); HAL_NVIC_EnableIRQ(SPIx_DMA_RX_IRQn); /##-5- Configure the NVIC for SPI #########################################/ / NVIC configuration for SPI transfer complete interrupt (SPI1) / HAL_NVIC_SetPriority(SPIx_IRQn, 6, 0); HAL_NVIC_EnableIRQ(SPIx_IRQn); } } static void BTB_SPIConfig(void) { /##-1- Configure the SPI peripheral #######################################/ / Set the SPI parameters / SpiHandle.Instance = SPIx; SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8; SpiHandle.Init.Direction = SPI_DIRECTION_2LINES; SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE; SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW; SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT; SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB; SpiHandle.Init.TIMode = SPI_TIMODE_DISABLE; SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; SpiHandle.Init.CRCPolynomial = 7; SpiHandle.Init.CRCLength = SPI_CRC_LENGTH_8BIT; SpiHandle.Init.NSS = SPI_NSS_HARD_INPUT; SpiHandle.Init.NSSPMode = SPI_NSS_PULSE_DISABLE; SpiHandle.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_ENABLE; SpiHandle.Init.Mode = SPI_MODE_SLAVE; if(HAL_SPI_Init( SpiHandle) != HAL_OK) { / Initialization Error */ // Error_Handler(); } } 0 本主题由 Harmony技术专家于 2024-4-16 11:48 审核通过
2024-4-16 06:22:25　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × heks 该类别下有 50 个回答。邀请回答 hgimtk 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 42 个回答。邀请回答 wang21cj 该类别下有 41 个回答。邀请回答 chm5 该类别下有 40 个回答。邀请回答 hjfjsdgfjdsf 该类别下有 37 个回答。邀请回答 uvysdfydad 该类别下有 35 个回答。邀请回答 h1654155957.9520 该类别下有 35 个回答。邀请回答 fdjslkjd 该类别下有 35 个回答。邀请回答 werywer 该类别下有 35 个回答。邀请回答凤毛麟角该类别下有 34 个回答。邀请回答维生素B2 该类别下有 34 个回答。邀请回答 dfzvzs 该类别下有 34 个回答。邀请回答 jenny042 该类别下有 34 个回答。邀请回答 ggfvxv 该类别下有 33 个回答。邀请回答 LY0206 该类别下有 33 个回答。邀请回答 meihuacg 该类别下有 33 个回答。邀请回答 hfgdzc 该类别下有 33 个回答。邀请回答 lining870815844 该类别下有 32 个回答。邀请回答 kpj3026 该类别下有 32 个回答。邀请回答举报刘桂兰相关推荐 • STM32H743VIT6使用SPI+DMA无法驱动2.4寸怎么解决？ 154 • 为什么STM32H743的DMA中断不起作用？ 310 • 使用CubeMX生成的代码来配置ADC和DMA，DMA遇到传输错误怎么处理？ 167 • STM32H743 DMA传输错误是什么原因？ 281 • 请问STM32H743 DMA不适用于ADC是何原因呢 258 • STM32H743 MPU为什么无法获取A/D数据？ 286 • STM32使用HAL库SPI+DMA发送导致TFT屏幕图片显示错误？ 2800 • HAL库SPI DMA的使用问题 6304 • 如何使用CubeMX生成的库对STM32H743 MCU进行编码？ 186 • 使用DMA的I2C间歇性停止的原因？怎么解决？ 226 2个回答

答案对人有帮助，有参考价值 0 如果是DMA传输只是结尾一段有问题，前面的数据没问题那么可以使用SCB_CleanDCache_by_Addr和SCB_InvalidateDCache_by_Addr这两个函数试一试，如果没有数据正确请检查数据缓冲区是否在指定内存里面，然后再检查配置吧

2024-4-16 10:42:45 评论举报王有罕

答案对人有帮助，有参考价值 0 如果数据传输是随机且不完整，可能的原因是DMA传输的长度不正确或者传输的数据没有被完全接收。可以检查以下几点： 1. 确保DMA传输的长度和缓冲区的大小一致，以保证数据完整传输。 2. 检查接收缓冲区是否足够大，以存储全部接收的数据。 3. 在中断处理中，检查DMA传输是否完成，并处理相关中断事件。可以使用HAL_DMA_IRQHandler()函数来处理DMA中断。另外，还可以尝试增加SPI的时钟速度，以提高数据传输的效率。可以在SPI初始化时设置合适的时钟分频因子。此外，请确保主机和从机的SPI配置都正确，包括引脚配置、时钟配置等。

2024-4-16 16:34:48 评论举报 1653339509.516700