UART_DMA from STM32F3Cube

[chenping]

Posted on April 17, 2015 at 18:28

Hello! This HAL_driver setting n functions look a bit different from the old Std_Periph_Driver...

The project works fine, but as I tried to set multiple UART, I failed. Does the structure of DMA needs to be redefined to add another for my other Uart? I use uart 2, and set the pin using the way exactly the same as uart 1 as predefined in the project. And, does it must have the same callback function like Uart1 to set the Uart flag? Below is my uart setting in msp.c  - the function of HAL_UART_MspInit static DMA_HandleTypeDef hdma_tx2; static DMA_HandleTypeDef hdma_rx2; GPIO_InitTypeDef  GPIO_InitStruct;   /*♯♯-1- Enable peripherals and GPIO Clocks♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/       /* Enable GPIO TX/RX clock */         __GPIOD_CLK_ENABLE();       /* Enable USARTx clock */       __USART2_CLK_ENABLE();       /* Enable DMA clock */       __DMA2_CLK_ENABLE();  /*♯♯-2- Configure peripheral GPIO ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/       /* UART TX GPIO pin configuration  */       GPIO_InitStruct.Pin       = GPIO_PIN_5;       GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;       GPIO_InitStruct.Pull      = GPIO_PULLUP;       GPIO_InitStruct.Speed     = GPIO_SPEED_HIGH;       GPIO_InitStruct.Alternate = GPIO_AF7_USART2;       HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);       /* UART RX GPIO pin configuration  */       GPIO_InitStruct.Pin = GPIO_PIN_6;       GPIO_InitStruct.Alternate = GPIO_AF7_USART2;       HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); /******************DMA Setting****************/ /* Configure the DMA handler for Transmission process */       hdma_tx2.Instance                 = USART2_TX_DMA_STREAM;       hdma_tx2.Init.Direction           = DMA_MEMORY_TO_PERIPH;       hdma_tx2.Init.PeriphInc           = DMA_PINC_DISABLE;       hdma_tx2.Init.MemInc              = DMA_MINC_ENABLE;       hdma_tx2.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;       hdma_tx2.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;       hdma_tx2.Init.Mode                = DMA_CIRCULAR;       hdma_tx2.Init.Priority            = DMA_PRIORITY_LOW;       HAL_DMA_Init(&hdma_tx2);       /* Associate the initialized DMA handle to the UART handle */       __HAL_LINKDMA(huart, hdmatx, hdma_tx2);       /* Configure the DMA handler for reception process */       hdma_rx2.Instance                 = USART2_RX_DMA_STREAM;       hdma_rx2.Init.Direction           = DMA_PERIPH_TO_MEMORY;       hdma_rx2.Init.PeriphInc           = DMA_PINC_DISABLE;       hdma_rx2.Init.MemInc              = DMA_MINC_ENABLE;       hdma_rx2.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;       hdma_rx2.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;       hdma_rx2.Init.Mode                = DMA_CIRCULAR;       hdma_rx2.Init.Priority            = DMA_PRIORITY_HIGH;       HAL_DMA_Init(&hdma_rx2);       /* Associate the initialized DMA handle to the the UART handle */       __HAL_LINKDMA(huart, hdmarx, hdma_rx2);       /*♯♯-4- Configure the NVIC for DMA ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/       /* NVIC configuration for DMA transfer complete interrupt (USARTx_TX) */       HAL_NVIC_SetPriority(USART2_DMA_TX_IRQn, 0, 1);       HAL_NVIC_EnableIRQ(USART2_DMA_TX_IRQn);       /* NVIC configuration for DMA transfer complete interrupt (USARTx_RX) */       HAL_NVIC_SetPriority(USART2_DMA_RX_IRQn, 0, 0);       HAL_NVIC_EnableIRQ(USART2_DMA_RX_IRQn); In main.c , I called upon this function: void UART2Init(){     U2.Instance        = USART2;     U2.Init.BaudRate   = 115200;     U2.Init.WordLength = UART_WORDLENGTH_8B;     U2.Init.StopBits   = UART_STOPBITS_1;     U2.Init.Parity     = UART_PARITY_NONE;     U2.Init.HwFlowCtl  = UART_HWCONTROL_NONE;     U2.Init.Mode       = UART_MODE_TX_RX;     HAL_UART_Init(&U2); } #clive1

[Tesla DeLorean]

Posted on April 17, 2015 at 20:06

Sorry, not answering any HAL/Cube questions here.