How to use usart after wake up from stopmode?

[JWong.11]

Everytime i wake up from stopmode i print my RTC time. However whenever i do that i print some weird symbols instead. Im using the STM32L053R8T6.

I just used:

printf("%d-%d-%d\n\r", Hour, Min, Sec);
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

 I can only printf the right time once and then after it enters the StopMode and wakes up from it, it gives random symbols

[JWong.11 · Accepted solution]

It has been solved already.

[Piranha]

...and btw newline for Windows OS is "\r\n" actually. 🙂