Re: RS-485
Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 4 Aug 1998 00:24:37 +0100 (BST)
> Since this comment is RS485 specific, it seemed a good starting place. But
> how exactly does one go about using this tidbit of information? I'm a
> supposed to go looping around waiting for all the data to be transmitted,
> and then somehow release the bus? I didn't see any ioctl calls that seemed
> suited to the task anyway. What exactly is intended here?
You drive the bus by fiddling with the RTS or whichever other lines are
driven to the bus. See TIOCMBIS/TIOCMBIC - at least with the RS485 PC
cards I've worked with
Alan
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