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 C4DC7208A83 for ; Tue, 3 Apr 2012 07:34:25 -0700 (PDT) Received: by snark.thyrsus.com (Postfix, from userid 1000) id B7E0E42E29; Tue, 3 Apr 2012 10:34:02 -0400 (EDT) Date: Tue, 3 Apr 2012 10:34:02 -0400 From: "Eric S. Raymond" To: thumbgps-devel@lists.bufferbloat.net, gpsd-dev@nongnu.org Message-ID: <20120403143402.GA7338@thyrsus.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Organization: Eric Conspiracy Secret Labs X-Eric-Conspiracy: There is no conspiracy User-Agent: Mutt/1.5.21 (2010-09-15) Subject: [Thumbgps-devel] "Plain Jane" timing GPS is working! 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, 03 Apr 2012 14:34:26 -0000 A few minutes ago I received mail from the test engineers at NaviSys. They have tested the "Plain Jane" concept (take a stock SiRf-III GPS chip plus PL2303 USB adapter, connect the 1PPS pin on the former to DCD input on the latter) with GPSD, and are actually seeing PPS pulse messages in the logs. The filter in GPSD doesn't like the pulse shape and is rejecting it, but that can be fixed. The essential point is that the hardware mod works exactly as expected and is producing events visible on USB. I'm expecting my samples from UniTraq today or tomorrow and may soon have more good news about our second Plain Jane variant. -- Eric S. Raymond