From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.perfora.net (mout.perfora.net [74.208.4.194]) by huchra.bufferbloat.net (Postfix) with ESMTP id 77A732002DE for ; Tue, 3 Apr 2012 07:59:20 -0700 (PDT) Received: from [192.168.83.3] (c-76-97-152-51.hsd1.ga.comcast.net [76.97.152.51]) by mrelay.perfora.net (node=mrus2) with ESMTP (Nemesis) id 0M700b-1STIlr0A2n-00xJhS; Tue, 03 Apr 2012 10:59:16 -0400 Message-ID: <4F7B1041.4070303@techstarship.com> Date: Tue, 03 Apr 2012 10:59:13 -0400 From: "Ron Frazier (NTP)" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.9) Gecko/20100722 Eudora/3.0.4 MIME-Version: 1.0 To: esr@thyrsus.com References: <20120403143402.GA7338@thyrsus.com> In-Reply-To: <20120403143402.GA7338@thyrsus.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:LIB2dMPnUORLcG2h7/8ftc4ZjgLfPy7q8fyedv43diq X7stAQAYiRRQ4Ku1p2JTPpk8DDR5dP52mNkjtV+RvEzj7NEukd PaHPf744dJds9Oqvbonijl8bzvmSTOsVeXtXSvNo1hsd3zXqVh 01iWfqNe3dy2KZ+lEMvhIxpnD2fauLZwvkX2gWIOdpun2jti15 wMNt7RosTVBU76RRrcYUPgWOuXsRv2jcIEK6iqR2bSYM8a/TNc wNQV9HKXFwm08iKuZnZWZR8f5wgz5w9noNW/8fvSpA7d5I6Sr2 /zVAquL8FkkwekmS2rIr9xQvr617m/EV2w+M7ugGyFdqctTdJr ZSekP1eZS7TcLjHLEyYVuNw9qVGyxRmOkj8GAYYka Cc: thumbgps-devel@lists.bufferbloat.net Subject: Re: [Thumbgps-devel] "Plain Jane" timing GPS is working! X-BeenThere: thumbgps-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Apr 2012 14:59:20 -0000 Hi Eric, I had my Sure board working a couple of weeks ago connected SERIAL -> Prolific adapter -> USB, with PPS patched to DCD, running NTPD on Windows using Dave Hart's new binaries, without running GPSD. It was working fine within + / - 1 ms of GPS time. It was definitely reacting to the pulses. Maybe you could try with NTPD only. I was using the "20" NMEA driver with the PPS flag 1 active. I don't know for sure if the Linux version of NTPD has all the features necessary to do this. PS I haven't seen much traffic on the thumbgps-devel list lately. Is this still "the place to be" for info on this project? Sincerely, Ron On 4/3/2012 10:34 AM, Eric S. Raymond wrote: > 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. > -- (PS - If you email me and don't get a quick response, don't be concerned. I get about 300 emails per day from alternate energy mailing lists and such. I don't always see new messages very quickly. If you need a reply and have not heard from me in 1 - 2 weeks, send your message again.) Ron Frazier timekeepingdude AT techstarship.com