UART baudrate on STM32

[Ted NIVAN]

Posted on March 27, 2018 at 19:33

Hi there,

Is it possible to change the uart baudrate dynamically after it has been initialized?

Kind regards,

#uart #stm32

[Tesla DeLorean]

Posted on March 27, 2018 at 19:37

Yes, but you want to make sure you've finished sending anything that is currently going over the wire before doing so.

[Ted NIVAN]

Posted on March 27, 2018 at 20:12

Thanks for replying. Which function should I use in the HAL inside my main program?

[Tesla DeLorean]

Posted on March 27, 2018 at 20:38

On the STM32F7 I'd use something like this..

USART6->CR1 &= ~USART_CR1_UE;

USART6->BRR = APB2Clock / Baud;USART6->CR1 |= USART_CR1_UE;