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Update Usart baud rate register during communication

Question asked by billaud.nicolas on Jun 26, 2014
Latest reply on Jun 27, 2014 by Clive One

I would like to know what happens if I modify the USART baud rate register value very little (+-3%) during a communication. Is it safe or is it essential to stop the communication before updating the BRR value even if the new value is really close to the old one ?

I hope that my questions are understandable.

Thank you.