Why does RS485 receive last sent char on SMT32H753?

[Ondrej1]

Hello,

Iam developing RS485 on STM32H753. I use STM32Cube (*.IOC file) for USART configuration (USART with Hardware Flow Control) and everything works perfectly. But last send char by processor is also received in RX buffer. Does anyone know how to prevent this behavior?

Thank you for your response.

[Tesla DeLorean · Accepted solution]

Clear RE when you turn the direction around?

[Ondrej1]

You are right, thank you!