From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8702 invoked by alias); 5 Aug 2004 08:14:50 -0000 Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Received: (qmail 8694 invoked from network); 5 Aug 2004 08:14:48 -0000 Received: from unknown (HELO anchor-post-30.mail.demon.net) (194.217.242.88) by sourceware.org with SMTP; 5 Aug 2004 08:14:48 -0000 Received: from calivar.demon.co.uk ([83.104.54.243] helo=xl5.calivar.com) by anchor-post-30.mail.demon.net with esmtp (Exim 3.35 #1) id 1BsdOh-000DKf-0U; Thu, 05 Aug 2004 08:14:47 +0000 Received: from xl5.calivar.com (localhost [127.0.0.1]) by xl5.calivar.com (Postfix) with ESMTP id 2344EECE9; Thu, 5 Aug 2004 09:14:47 +0100 (BST) To: Giri Raja Cc: ecos-discuss@ecos.sourceware.org References: <20040804191107.89275.qmail@web53803.mail.yahoo.com> From: Nick Garnett Original-Sender: nickg@ecoscentric.com Date: Thu, 05 Aug 2004 08:14:00 -0000 In-Reply-To: <20040804191107.89275.qmail@web53803.mail.yahoo.com> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Re: [ECOS] wiggle with the CTS pin X-SW-Source: 2004-08/txt/msg00093.txt.bz2 Giri Raja writes: > Hi, > I need to send a 'LO' signal to the CTS pin in one > of my serial ports, on an EB40A board. Is there any > API to do this? > there was an email on this issue last month -- > http://sources.redhat.com/ml/ecos-discuss/2004-07/msg00109.html > > just wanted to know if anything exists already. You have the basic problem here that the RTS/CTS lines on the EB40A serial connectors are not controllable. Those on serial A are connected together, so RTS just reflects CTS, and they are not connected at all on serial B. Even if they were controllable, it would have to be via PIO pins since the AT91 USARTs do not support anything other than TXD and RXD. Also, when you say CTS, I guess you mean the CTS input to the remote end of the line, which should be the RTS output at this end. So, if you use serial A and get your remote end to hold its RTS low, then the reflected CTS will be low too. -- Nick Garnett eCos Kernel Architect http://www.ecoscentric.com/ The eCos and RedBoot experts -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss