# The RS485 driver problem...

- List: linuxppc-dev
- 1 message, 1 author
- Page: https://ratatoskr.run/linuxppc-dev/2005/01/9396646/t

## The RS485 driver problem...

- From: David Jander \<hidden\>
- Date: 2005-01-31 08:51:29 
- Message: https://ratatoskr.run/linuxppc-dev/2005/01/9396646.md

```text

Hi,

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?

Greetings,

-- 
David Jander
Protonic Holland.
```