Return-Path: Received: (qmail 22234 invoked from network); 30 Jun 2004 12:15:02 -0000 Received: from unknown (HELO ptb-mxscan01.plus.net) (212.159.14.235) by ptb-mailstore03.plus.net with SMTP; 30 Jun 2004 12:15:02 -0000 Received: (qmail 74716 invoked from network); 30 Jun 2004 12:14:58 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore01.plus.net (212.159.14.215) by ptb-mxscan01.plus.net with SMTP; 30 Jun 2004 12:14:53 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1BfdzI-000Ihh-R1 for dave@picks.force9.co.uk; Wed, 30 Jun 2004 12:14:52 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BfdxG-0007aT-Su for rs_out_1@blacksheep.org; Wed, 30 Jun 2004 13:12:46 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BfdxF-0007aK-28 for rsgb_lf_group@blacksheep.org; Wed, 30 Jun 2004 13:12:45 +0100 Received: from one.surfree.co.uk ([195.80.0.234]) by relay.salmark.net with esmtp (Exim 4.24) id 1BfkVi-00065b-Bw for rsgb_lf_group@blacksheep.org; Wed, 30 Jun 2004 20:12:46 +0100 X-Fake-Domain: standalone Received: from standalone ([212.248.140.54]) by one.surfree.co.uk (8.9.3/8.9.3) with SMTP id OAA04128; Wed, 30 Jun 2004 14:10:42 +0100 Received: by localhost with Microsoft MAPI; Wed, 30 Jun 2004 13:09:48 +0100 Message-ID: <01C45EA3.853AA5F0.actalbot@southsurf.com> From: Andy To: "'ukmicrowaves@yahoogroups.com'" , "'rsgb_lf_group@blacksheep.org'" Date: Wed, 30 Jun 2004 13:09:08 +0100 Importance: high X-Priority: 1 (Highest) Organization: UKNWN(UK) X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211 MIME-Version: 1.0 X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=no,RCVD_IN_SORBS=0.1,X_PRIORITY_HIGH=0.516 Subject: LF: Jupiter GPS Module programming Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.5 required=5.0 tests=X_PRIORITY_HIGH autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SPAMFiltered: yes X-Spam-Rating: 1 Can anyone who has programmed this module from first principles help?? I'm trying to write some code to communicate with the Connexant Jupiter T GPS module, as used in the simple GPS Disciplined Oscillator mentioned on these reflectors recently. It isn't necessary to 'talk' to the module for the GPSDO to work, but I want to to be able to do this in order to add GPS validity checking, and get a diplay of time and location from the NMEA string. The problem is this : I have an RS232 connection set up, the flash boot mssage appears on the display so I know the serial link is working. I can generate (what I think are) the correct binary values and checksums to send to the module, but there is no acknowledgement at all from it - just appears deaf and dumb. If anyone has managed to communicate with one of these, can I have a look at either your source code or at least an exact set of values to send to the module to ellicit some response. Ultimately, all I need to do is to send it the correct data needed to output NMEA data so it sends the GPSRMC string once per second, so all my existing PIC software can read the data it wants. Andy G4JNT