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CubeMX's UART can not receive and transmit at the same time

Question asked by ll.hgyxb on May 4, 2017
Latest reply on May 8, 2017 by ll.hgyxb

CubeMX V1.12.0


I write below code to receive one bye and one bye:

HAL_UART_Receive_IT(&huart1, (T_U8*)&g_uart_receive_byte, 1);


void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
if(huart == &huart1)
//get the byte
//receive next byte
HAL_UART_Receive_IT(huart, &g_uart_receive_byte, 1);

 and in the main I use HAL_UART_Transmit to transmit data.


but when HAL_UART_Transmit is doing, a new buffer is received and HAL_UART_RxCpltCallback will be called, then HAL_UART_Receive_IT will be fail because HAL_UART_Transmit has call __HAL_LOCK(huart). 

I think HAL_UART_Transmit and  HAL_UART_Receive_IT should not use the same lock, they should can use at same time.

Is it right?