Re: should RTS init in serial core be tied to CRTSCTS

From: Oleksiy Kebkal
Date: Wed Mar 07 2007 - 08:38:44 EST


2007/3/7, Krzysztof Halasa <khc@xxxxxxxxx>:
Robin Getz <rgetz@xxxxxxxxxxxxxxxxxxxx> writes:

> It is useful on (broken) legacy serial equipment, where RTS should be
> completely under the applications control.
>
> Glitches on RTS aren't acceptable, and confuse some devices.

Does that mean you can't use TIOCMSET, TIOCM_RTS etc?

No. It is possible to use TIOCMSET only after open syscall. Between
open and ioctl syscals RTS will be asserted. Sometimes it is not
acceptable behaviour.

-Oleksiy
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