Using STM32F072VB..USART4 with interrupt..unable to read the receive buffer in interrupt routine...please see the code snippet... I trying to commpare p[0] & p[1]....to do the following operation in my code...

[Bs.1]

uint8_t p[2]={0,0}; /// receive buffer

void USART3_4_IRQHandler(void)

{

 /* USER CODE BEGIN USART3_4_IRQn 0 */

      /* USER CODE END USART3_4_IRQn 0 */

      HAL_UART_IRQHandler(&huart4);

      /* USER CODE BEGIN USART3_4_IRQn 1 */

      HAL_UART_Receive_IT(&huart4, (uint8_t *)p, 2);

 /* USER CODE END USART3_4_IRQn 1 */

}

[prain]

This line

​HAL_UART_Receive_IT(&huart4, (uint8_t *)p, 2);

should be in receive complete callback. move it.​

[Tesla DeLorean]

Array should be volatile

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