How to enable the HAL_UARTEx_RxEventCallback function.

[Junde]

Hi, I am using cubeMx generate the STM32F302VE project, which for receiving the usart1 date by DMA circual mode.

My config as below:

1. enable DMA, but disable DMA interrupt;
2. enable USART1, and enable UART_IT_IDLE;

Now, the project can enter the "USART1_IRQHandler()", but can't run to "__HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);", because "huart->ReceptionType != HAL_UART_RECEPTION_TOIDLE". Details can refer the attachment and the following picture.

[Junde · Accepted solution]

Hi, I already know what's the reason of this question.

I shoud call HAL_UARTEx_ReceiveToIdle_DMA() which is declaration in "stm32f3xx_hal_uart_ex.h" replace the HAL_UART_Receive_DMA().

[Junde]

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