What does this message mean??

• Messages sorted by:[ date ][ thread ][ subject ][ author ]

Hi,

Martin Wahlstrom wrote:
> 02/18 22:41:54 yC1   lock made
> 02/18 22:41:55 yC1   tio_get_rs232_lines: status: RTS DTR
> 
> --- 02/18 22:41:55 yC1  WARNING: DSR is off - modem turned off or bad cable?
> This is because the Cyclades card don't have this pin, according
> to support@cyclades.com

Oh my. What a crappy design. But it's a WARNING only, so it shouldn't
matter. (I'm also missing CTS, but some modem lower it while in command
mode, so this *might* be correct -- it might as well hint at a driver bug
concerning the TIOCMGET ioctl()).

> 02/18 22:41:55 yC1  lowering DTR to reset Modem
> 
> --- 02/18 22:41:55 yC1  TIOCMBIC failed: Invalid argument ------
> This is the line I don't know what it mean..

TIOCMBIC - "Terminal I/O Control Modem BIt Clear" - is used to lower the
DTR line. It should not fail, the code works fine on Linux' normal serial
ports.

I'd say the Cyclades driver has a severe bug here.

> But as I said, It does work..

You may not notice this misfunction :)

gert
-- 
USENET is *not* the non-clickable part of WWW!
                                                           //www.muc.de/~gert/
Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-3545980                         gert.doering@physik.tu-muenchen.de