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STM32F4 RS485 and RTS pin

Question asked by Lukasz Przenioslo on Dec 8, 2015
Latest reply on Dec 9, 2015 by Lukasz Przenioslo
Hello there,
I need to implement rs485 communication using STM32F407. I am using MAX487 chip which has a direction pin. I have searched the forums for a hardware solution to this, and found a topic which says that it is not possible:

But on the other hand, I was wondering isnt it possible to use USART with RTS pin enabled and use that RTS pin as direction control? In that way i would not need to wait for interrupts to manually toggle DE pin.


From the description of RTS functionality it seems like it works the way it should for RS485. What do you think?