From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from snark.thyrsus.com (static-71-162-243-5.phlapa.fios.verizon.net [71.162.243.5]) by huchra.bufferbloat.net (Postfix) with ESMTP id 7F2E72001DB for ; Tue, 20 Mar 2012 14:31:48 -0700 (PDT) Received: by snark.thyrsus.com (Postfix, from userid 1000) id 8627B4081F; Tue, 20 Mar 2012 17:31:43 -0400 (EDT) Date: Tue, 20 Mar 2012 17:31:43 -0400 From: "Eric S. Raymond" To: tz Message-ID: <20120320213143.GA13871@thyrsus.com> References: <20120317064513.GA3482@thyrsus.com> <1014E797-3720-4CD3-B2A9-2E70DA1D7C77@gmail.com> <20120317101153.GA4388@thyrsus.com> <20120317180451.GB6851@thyrsus.com> <20120320120603.GG10320@thyrsus.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Eric Conspiracy Secret Labs X-Eric-Conspiracy: There is no conspiracy User-Agent: Mutt/1.5.21 (2010-09-15) Cc: thumbgps-devel@lists.bufferbloat.net Subject: Re: [Thumbgps-devel] PPS over USB Serial can work X-BeenThere: thumbgps-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list Reply-To: esr@thyrsus.com List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Mar 2012 21:31:48 -0000 tz : > http://www.sparkfun.com/products/10277 > > It doesn't support CTS/DCD/RI "out of the box", but the source is > there. We can name it what we want (there is the vendor/product ID > problem - we should be able to get one, but the text string can be > uniquely ours). > > The base code (at github) has a delay to buffer characters with a > timeout, but that can be eliminated or short circuited for the "$" > which begins NMEA sentences. > > I haven't seen all the LUFA library, but going from the ICP interrupt > to sending a DCD shouldn't be that hard. > > more here - I haven't found DCD support yet but it shouldn't be hard to add. That is interesting, if only because we can get at the firmware. Worth keeping in mind - it now looks like "Plain Jane" will work, but if it doesn't... -- Eric S. Raymond