From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yx0-f189.google.com (mail-yx0-f189.google.com [209.85.210.189]) by speech.braille.uwo.ca (Postfix) with ESMTP id 557FE102FA for ; Mon, 22 Feb 2010 11:25:17 -0500 (EST) Received: by yxe27 with SMTP id 27so2976585yxe.23 for ; Mon, 22 Feb 2010 08:25:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:date:from:to:subject :message-id:mail-followup-to:references:mime-version:content-type :content-disposition:in-reply-to:user-agent; bh=L9DiK4OCHcJxfoJBJc5nhYM7KyGvCI5MNFt1jtIrBs4=; b=RwpG3h9v89ND1ebDuDEYI6rTc7xsBGv6AOxs5tJ2oZuCE2CfDrFcRhJjyp6QzHevQk T7XI+/mSNo5iDuxDOQ+YvdCfdx4/4WEOUMIPz+UEB8tSubrlvJuFW8LnL5xLxPCNWUkF xu/pNa3Ttm8uJs0Ubb+QnS110tyI3n5S0lU2w= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:subject:message-id:mail-followup-to:references :mime-version:content-type:content-disposition:in-reply-to :user-agent; b=SFHfZWQoBjBI1QqIWVuH3RokURZ58jTkkcux2WQ0OSRBaNPbEWaISXvvX2OQ1BBWx6 YP7INqCh8MVOh0ZTS132bBt2sphhvaVdY2zt/WtiGlKj5q497wwLJyUi8GerZQ45J8Gr MVyZ/FVu3ydbR7+MhqqcmcO4FCgxrb6Jx/dPE= Received: by 10.100.15.19 with SMTP id 19mr4629749ano.72.1266855915780; Mon, 22 Feb 2010 08:25:15 -0800 (PST) Received: from linux1 (cpe-76-183-49-63.tx.res.rr.com [76.183.49.63]) by mx.google.com with ESMTPS id 23sm944143ywh.30.2010.02.22.08.25.08 (version=SSLv3 cipher=RC4-MD5); Mon, 22 Feb 2010 08:25:10 -0800 (PST) Received: by linux1 (sSMTP sendmail emulation); Mon, 22 Feb 2010 10:25:08 -0600 Date: Mon, 22 Feb 2010 10:25:08 -0600 From: William Hubbs To: "Speakup is a screen review system for Linux." Subject: Re: USB synthesizers Message-ID: <20100222162508.GA28605@linux1> Mail-Followup-To: "Speakup is a screen review system for Linux." References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) X-BeenThere: speakup@braille.uwo.ca X-Mailman-Version: 2.1.13 Precedence: list Reply-To: "Speakup is a screen review system for Linux." List-Id: "Speakup is a screen review system for Linux." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Feb 2010 16:25:17 -0000 Hi Zack, On Thu, Feb 11, 2010 at 04:52:12PM -0800, Zachary Kline wrote: > Since the topic of serial ports has come up, I thought I might inquire > about the possibility of interfacing directly with those USB hardware > synthesizers that do exist. I'm thinking especially of the Dectalk USB, > which I happen to own. > I don't know much about USB protocols, but I'd guess the one it uses isn't > just an encapsulation of the one used over the serial port? I just think > that if we could either reverse-engineer or better yet pursuade the > manufacturers to give us the specs for those protocols, we'd dodge the > serial port problem entirely. > I'm probably raising the same question that bugs free software people > everywhere, but I thought it should be asked. Actually this is being worked on. I have sent email to the manufacturer (Access Solutions) last week about getting the specs. I'll let you know what happens there. I own a triple talk USB myself, so I am looking at writing the driver for it to start with, then probably the dectalk USB. I'll probably start with kernel level device drivers that create a device in /devso they can be accessed from user space then figure out how to integrate them into speakup. Thanks, William