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add uart_tx dma

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不吃油炸鸡
2025-08-18 14:13:14 +08:00
parent 60551d17a6
commit 2f733e6b45
1 changed files with 20 additions and 0 deletions
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20
Power_Pico/Core/Src/usart.c
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@@ -29,6 +29,7 @@ uint8_t uart_receive_str[USART_RX_BUFFER_SIZE + 1];
UART_HandleTypeDef huart6;
DMA_HandleTypeDef hdma_usart6_rx;
DMA_HandleTypeDef hdma_usart6_tx;
/* USART6 init function */
@@ -103,6 +104,24 @@ void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
__HAL_LINKDMA(uartHandle,hdmarx,hdma_usart6_rx);
/* USART6_TX Init */
hdma_usart6_tx.Instance = DMA2_Stream6;
hdma_usart6_tx.Init.Channel = DMA_CHANNEL_5;
hdma_usart6_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_usart6_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_usart6_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_usart6_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_usart6_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_usart6_tx.Init.Mode = DMA_NORMAL;
hdma_usart6_tx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart6_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart6_tx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(uartHandle,hdmatx,hdma_usart6_tx);
/* USART6 interrupt Init */
HAL_NVIC_SetPriority(USART6_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(USART6_IRQn);
@@ -131,6 +150,7 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
/* USART6 DMA DeInit */
HAL_DMA_DeInit(uartHandle->hdmarx);
HAL_DMA_DeInit(uartHandle->hdmatx);
/* USART6 interrupt Deinit */
HAL_NVIC_DisableIRQ(USART6_IRQn);