From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268280AbUHQPO7 (ORCPT ); Tue, 17 Aug 2004 11:14:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268270AbUHQPO6 (ORCPT ); Tue, 17 Aug 2004 11:14:58 -0400 Received: from the-village.bc.nu ([81.2.110.252]:26856 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S268290AbUHQPOY (ORCPT ); Tue, 17 Aug 2004 11:14:24 -0400 Subject: Re: Serial Driver for PPP - that runs in Half Duplex Mode From: Alan Cox To: "vanitha@agilis.st.com.sg" Cc: "'linux-kernel@vger.kernel.org'" In-Reply-To: <01C48448.D5B44750.vanitha@agilis.st.com.sg> References: <01C48448.D5B44750.vanitha@agilis.st.com.sg> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1092751901.22793.11.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Tue, 17 Aug 2004 15:11:43 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Maw, 2004-08-17 at 11:56, Vanitha Ramaswami wrote: > Do you have a serial port PPP Driver that supports half-duplex mode of > operation ?. i.e. I need RTS to be active when you are transmitting data > and to be inactive to receive. You can do this with a user space helper if performance isnt critical (ie its not megabits). Create a tty/pty pair. Plug pppd one side of it and run your own program the other side between it and the real tty. This is how the old scarabd radio driver worked, although not using PPP because we found that with the losses we got on radio other protocols worked better.