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RDM Physical Layer/Hardware Discussion Discussion and questions relating to the physical or hardware layer of RDM.

 
 
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Old June 12th, 2009   #7
Nigel Worsley
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Join Date: Jun 2006
Location: London
Posts: 13
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Originally Posted by wcai_cypress View Post
Because I am a firmware engineer, I have one more stupid question, normally, the UART module in MCU works in full-duplex mode, how to make it work in half-duplex mode.
The easiest way is not to bother!

Tie the RS485 driver chip's Driver Enable signal to the Not Receive Enable and the UART will never see the transmit data in the first place.
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