From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Michael Buesch <freesoftwaredeveloper@web.de>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: modifying line state manually on ttyS
Date: 07 Apr 2003 15:16:28 +0100 [thread overview]
Message-ID: <1049724987.2965.60.camel@dhcp22.swansea.linux.org.uk> (raw)
In-Reply-To: <200304071702.08114.freesoftwaredeveloper@web.de>
On Llu, 2003-04-07 at 16:02, Michael Buesch wrote:
> I have developed my own device, that is connected to ttyS0.
> To talk to my device, I need to set the state of the TxD line
> manually to either 0 or 1 (+12v or -12v). What I try to say is,
TxD is a bad choice. A lot of the hardware cannot control TXD this
way. DTR is the usual one because it is easy to handle but there
are other control lines you can drive directly (see TIOCGMODEM)
next prev parent reply other threads:[~2003-04-07 15:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-07 15:02 Michael Buesch
2003-04-07 14:16 ` Alan Cox [this message]
2003-04-07 15:42 ` Michael Buesch
2003-04-07 15:34 ` Sergei Organov
2003-04-07 16:32 ` Michael Buesch
2003-04-07 17:01 ` Sergei Organov
2003-04-07 17:16 ` Michael Buesch
2003-04-07 15:51 ` Richard B. Johnson
2003-04-07 15:48 ` Michael Buesch
2003-04-07 16:22 Ed Vance
2003-04-07 16:48 ` Michael Buesch
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