Question
The STM32H743 LPuart+DMA_IDLE does not function properly
下面是我的部分函数，普通串口按照这个配置，是可以正常进入回调函数，但是LPuart却不能进入回调函数，不知道问题出在哪里，使用stm32cubemx6.16.0,附件是ioc文件，
Post Edited by ST moderator to apply source code formatting and translate from Chinese to English to comply with the community rule:
Below are some of my functions. With this configuration, the standard serial port can enter the callback function normally, but LPuart cannot. I'm unsure where the issue lies. Using STM32CubeMX 6.16.0. The attached file is the I/O configuration file.
void StartControlPowerTask(void const * argument)
{
/* USER CODE BEGIN StartControlPowerTask */
HAL_StatusTypeDef ret;
__HAL_UART_ENABLE_IT(&hlpuart1, UART_IT_IDLE);
__HAL_UART_CLEAR_IDLEFLAG(&hlpuart1);
ret = HAL_UARTEx_ReceiveToIdle_DMA(&hlpuart1, rxl1_dma_buffer, RX_BUFFER_SIZE);//rs232
/* Infinite loop */
for(;;)
{
osDelay(1);
}
/* USER CODE END StartControlPowerTask */
}
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{
if (huart->Instance == LPUART1)
{
HAL_DMA_Abort(huart->hdmarx);
/* 2. Cache 失效（一次即可，注意对齐） */
SCB_InvalidateDCache_by_Addr((uint32_t *)rxl1_dma_buffer, RX_BUFFER_SIZE );
/* 4. 重新启动接收 */
HAL_UARTEx_ReceiveToIdle_DMA(&hlpuart1, rxl1_dma_buffer, RX_BUFFER_SIZE
);
}
}
void MX_LPUART1_UART_Init(void)
{
/* USER CODE BEGIN LPUART1_Init 0 */
/* USER CODE END LPUART1_Init 0 */
/* USER CODE BEGIN LPUART1_Init 1 */
/* USER CODE END LPUART1_Init 1 */
hlpuart1.Instance = LPUART1;
hlpuart1.Init.BaudRate = 19200;
hlpuart1.Init.WordLength = UART_WORDLENGTH_8B;
hlpuart1.Init.StopBits = UART_STOPBITS_1;
hlpuart1.Init.Parity = UART_PARITY_NONE;
hlpuart1.Init.Mode = UART_MODE_TX_RX;
hlpuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
hlpuart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
hlpuart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
hlpuart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
hlpuart1.FifoMode = UART_FIFOMODE_DISABLE;
if (HAL_UART_Init(&hlpuart1) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&hlpuart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&hlpuart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&hlpuart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN LPUART1_Init 2 */
/* USER CODE END LPUART1_Init 2 */
}
if(uartHandle->Instance==LPUART1)
{
/* USER CODE BEGIN LPUART1_MspInit 0 */
/* USER CODE END LPUART1_MspInit 0 */
/** Initializes the peripherals clock
*/
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LPUART1;
PeriphClkInitStruct.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_HSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
{
Error_Handler();
}
/* LPUART1 clock enable */
__HAL_RCC_LPUART1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**LPUART1 GPIO Configuration
PB6 ------> LPUART1_TX
PB7 ------> LPUART1_RX
*/
GPIO_InitStruct.Pin = RS232_TX_Pin|RS232_RX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF8_LPUART;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* LPUART1 DMA Init */
/* LPUART1_RX Init */
hdma_lpuart1_rx.Instance = BDMA_Channel0;
hdma_lpuart1_rx.Init.Request = BDMA_REQUEST_LPUART1_RX;
hdma_lpuart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_lpuart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_lpuart1_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_lpuart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_lpuart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_lpuart1_rx.Init.Mode = DMA_NORMAL;
hdma_lpuart1_rx.Init.Priority = DMA_PRIORITY_HIGH;
if (HAL_DMA_Init(&hdma_lpuart1_rx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(uartHandle,hdmarx,hdma_lpuart1_rx);
/* LPUART1 interrupt Init */
HAL_NVIC_SetPriority(LPUART1_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(LPUART1_IRQn);
/* USER CODE BEGIN LPUART1_MspInit 1 */
/* USER CODE END LPUART1_MspInit 1 */
}