The RS485 driver problem...

David Jander david.jander at
Mon Jan 31 19:51:24 EST 2005


If you want to connect a RS485 transceiver to a normal UART, you always have 
the problem of dealing with enabling/disabling transmitter and recveiver. I 
have seen hardware that misuses RS-232 hardware handshaking lines (RTS/CTS) 
for this purpose. What I have not been able to find is a linux driver or 
software solution to this problem.

Has anybody used the CPM uarts (or even a standard 16C550 uart) for this 
purpose? How?


David Jander
Protonic Holland.

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