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Forum: RDM Physical Layer/Hardware Discussion June 12th, 2009
Replies: 24
Views: 36,798
Posted By Nigel Worsley
I stand ( well, sit actually... ) corrected! ...

I stand ( well, sit actually... ) corrected!

I don't have a copy of the RDM spec to hand, I was intending to check that figure this evening. This means that the UART will need to be run at 50kbps...
Forum: RDM Physical Layer/Hardware Discussion June 12th, 2009
Replies: 24
Views: 36,798
Posted By Nigel Worsley
The easiest way is not to bother! Tie the...

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.
Forum: RDM Physical Layer/Hardware Discussion June 12th, 2009
Replies: 24
Views: 36,798
Posted By Nigel Worsley
For receiving, a framing error with data of 00H...

For receiving, a framing error with data of 00H can be assumed to be a break.

For transmitting, then assuming that the UART doesn't support sending of breaks then either of the following should...
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