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Problems with gpsd under BullsEye

Don Rolph All Messages By This Member #5973 I have been poking to try to understand some instabilities I have observed with Dire Wolf using gpsd under Raspbian BullsEye. I saw: - a flood of packets through the sound card when achieving gps fix with the MT3333 GPS - an apparent?failure to update the gps coordinates used by Dire Wolf when using a u-blox GPS puck As noted below, if I substitute the gpsd 3.23.2 version for the default BullsEye?gpsd 3.22-4 version all issues I have observed have apparently?been resolved. I will include this in my OS build instructions?for BullsEye. It would appear that the default gpsd 3.22-4 executable can introduce instabilities in the operation of Dire Wolf, and using the updated gpsd 3.23.2 resolves these issues. Building gpsd 3.23.2 from scratch results in library incompatibilities with the Dire Wolf build, so a pure upgrade does not seem to be appropriate at this time. ---------- Forwarded message --------- From: Don Rolph <don.rolph@...> Date: Fri, Dec 31, 2021 at 11:41 AM Subject: Re: GPS Devices tested with gpsd V3.22 on Raspberry PI Zero 2 W/BullsEye Raspbian To: Gary E. Miller <gem@...>, <gpsd-dev@...> Cc: john <wb2osz@...>, Don Rolph <don.rolph@...> Ok, I have poked some more. I successfully build a gpsd V3.23.2 executable. I then use apt-get install to add the gpsd components. I then replaced the /usr/sbin/gpds v3.22-4 with the gpsd 3.23.2 executable. I built direwolf 1.7. I can now report: - the autobauding problem?for 9600 baud gps in V3.22-4 is fixed in gpsd 3.23.2 - the direwolf behavior where at fix with the MT3333 GPS results in a flood of sound requests is resolved The gpsd 3.22-4 executable seems to have instabilities. The gpsd 3.23.2 build environment is incompatible?with the darlier development code. Substituting the gpsd 3.23.2 executable for th gpsd 3.22-4 executable which?is the default under BullsEye resolves all known issues. I will keep testing. Thanks for everyone's help! toggle quoted message Show quoted text On Fri, Dec 31, 2021 at 8:23 AM Don Rolph <don.rolph@...> wrote: OK I went and looked?at gpsd 3.23.2. I can compile gpsd 3.23.2 successfully BUT the library calls appear to have changed and I can't compile direwolf against the gpsd 3.23.2 libraries.? So moving to gpsd 3.23.2 is not feasible at t his time.? I will have to stick with gpsd 3.22 for the moment. I find it puzzling that it wold be work to match baud rate of 9600 for MT3333 and Stratux GPYes 2.0 since both autobaud?to 9600 baud under 3.17 as supplied?by Raspbian buster. In any event these units do work with gpsd 3.22 IF speed is set to 9600. On Thu, Dec 30, 2021 at 9:33 PM Gary E. Miller <gem@...> wrote: Yo Don! On Thu, 30 Dec 2021 16:53:25 -0500 Don Rolph <don.rolph@...> wrote: > Note that gpsd V3.22 in this testing has shown problems with > autobauding devices which run at 9600 baud.? Devices at 4800 baud > work fine without setting speed. Which is one of many reasons why 3.23.1 is out, and 3.23.2 coming soon. Autobaud works much better now. 3.22 is 18 monhts old.? Don't use it. > Adafruit ultimate USB GPS.? MTK3333 chip.? requires gpsd to have > speed set to 9600 baud > - Changable, with some effort. > Stratux GPSYes 2.0. ublox 8;? requires gpsd 3.22 to have speed set to > 9600 baud Ditto. > GPS/GLONASS USB dongle. U-blox 7 > - > > > VFAN Model UG-353 U-blox 7 > - > Avoaid anything u-blox less than 8. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 ? ? ? ? gem@...? Tel:+1 541 382 8588 ? ? ? ? ? ? Veritas liberabit vos. -- Quid est veritas? ? ? "If you can't measure it, you can't improve it." - Lord Kelvin -- 73, AB1PH Don Rolph -- 73, AB1PH Don Rolph -- 73, AB1PH Don Rolph

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#5973

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