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Add USART DMA in Normal mode from CubeMX

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This commit is contained in:
Erick
2026-06-18 06:20:14 +02:00
parent 7b30c3cedd
commit 4967cd9b32
6 changed files with 57 additions and 3 deletions
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Core/Inc/stm32f4xx_it.h
+1
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@@ -56,6 +56,7 @@ void SDIO_IRQHandler(void);
void TIM6_DAC_IRQHandler(void);
void DMA2_Stream3_IRQHandler(void);
void DMA2_Stream6_IRQHandler(void);
void DMA2_Stream7_IRQHandler(void);
/* USER CODE BEGIN EFP */
/* USER CODE END EFP */
Core/Src/canlog.c
-1
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@@ -121,7 +121,6 @@ void vCANListener(void *argument)
{
// J1939 decoding
// RELAY: Push to the UART queue
osMessageQueuePut(xUARTQueue, &message, 0U, 0U);
}
}
Core/Src/main.c
+5 -1
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@@ -46,6 +46,7 @@ DMA_HandleTypeDef hdma_sdio_rx;
DMA_HandleTypeDef hdma_sdio_tx;
UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_tx;
/* USER CODE BEGIN PV */
LED_Config led_can1 = {GPIOB, GPIO_PIN_5};
@@ -386,7 +387,7 @@ static void MX_USART1_UART_Init(void)
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 1152000;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
@@ -419,6 +420,9 @@ static void MX_DMA_Init(void)
/* DMA2_Stream6_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream6_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream6_IRQn);
/* DMA2_Stream7_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream7_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream7_IRQn);
/* USER CODE BEGIN MX_DMA_Init 1 */
DEBUG_PRINT("DMA initialized!\r\n");
Core/Src/stm32f4xx_hal_msp.c
+23
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@@ -26,6 +26,8 @@ extern DMA_HandleTypeDef hdma_sdio_rx;
extern DMA_HandleTypeDef hdma_sdio_tx;
extern DMA_HandleTypeDef hdma_usart1_tx;
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
@@ -371,6 +373,25 @@ void HAL_UART_MspInit(UART_HandleTypeDef* huart)
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USART1 DMA Init */
/* USART1_TX Init */
hdma_usart1_tx.Instance = DMA2_Stream7;
hdma_usart1_tx.Init.Channel = DMA_CHANNEL_4;
hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_usart1_tx.Init.Mode = DMA_NORMAL;
hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(huart,hdmatx,hdma_usart1_tx);
/* USER CODE BEGIN USART1_MspInit 1 */
/* USER CODE END USART1_MspInit 1 */
@@ -401,6 +422,8 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);
/* USART1 DMA DeInit */
HAL_DMA_DeInit(huart->hdmatx);
/* USER CODE BEGIN USART1_MspDeInit 1 */
/* USER CODE END USART1_MspDeInit 1 */
Core/Src/stm32f4xx_it.c
+15
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@@ -58,6 +58,7 @@
extern DMA_HandleTypeDef hdma_sdio_rx;
extern DMA_HandleTypeDef hdma_sdio_tx;
extern SD_HandleTypeDef hsd;
extern DMA_HandleTypeDef hdma_usart1_tx;
extern TIM_HandleTypeDef htim6;
/* USER CODE BEGIN EV */
@@ -218,6 +219,20 @@ void DMA2_Stream6_IRQHandler(void)
/* USER CODE END DMA2_Stream6_IRQn 1 */
}
/**
* @brief This function handles DMA2 stream7 global interrupt.
*/
void DMA2_Stream7_IRQHandler(void)
{
/* USER CODE BEGIN DMA2_Stream7_IRQn 0 */
/* USER CODE END DMA2_Stream7_IRQn 0 */
HAL_DMA_IRQHandler(&hdma_usart1_tx);
/* USER CODE BEGIN DMA2_Stream7_IRQn 1 */
/* USER CODE END DMA2_Stream7_IRQn 1 */
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */