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Code Get Stuck

arun rajajinagar
Associate II


I am using STM32L072 LoRa discovery kit and enabled UART with DMA. Some times my code gets stuck in HAL_UART_Receive_DMA( ....) function at the line 

SET_BIT(huart->Instance->CR3, USART_CR3_EIE);

This is called at the begining of the code. It wont recover at all until i reset the MCU for some number of times.

Kindly let me know how shall I resolve this issue.


Make sure you check and clear any noise or framing errors, etc that might be stopping the receiver from collection additional data.

Implement a timeout/recovery so it doesn't get stuck indefinitely. You'll likely need to debug/diagnose your own system.

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Senior II