Help! MediaTek Problems
Comm problems seem to be drawn to me. This time it appears to be an issue with comm between the GPS and the APM. I reliably get a solid blue light on the MediaTek, indicating GPS lock I believe, but the red LED (C) on the APM doesn't light up. I'm running the ArduPiratesNG release 458 (latest one available for download on their wiki). Best I can tell, there's no way to know what firmware is loaded on the GPS, but I see the same behavior if I configure for 1.4 or 1.6.
My first thought was that it's a GPS firmware problem and I need to reload the firmware as instructed on the wiki (gotta buy a friggin' FTDI cable, ARGH). But then I saw this post, which led me to believe that there might be some versions of the code floating around where LED C isn't functioning correctly???
I've also read multiple insinuations that there's some way to test the GPS via CLI, but I can't find instructions on how to do so for the life of me. Then I found this post on RCG and ran knuckles' code, whose result was a bunch of gibberish on the serial monitor. Here's a sample:
Ö f¡ÎÐÝ âá´ûùz_M × ~±§ÐÝ âá´ûùz_M Ø ©"ÐÝ âß´ûùz_M Ù ~¢ÝÐÝ âß´ûùz_M Ú ÐÝ âß´ûùz_M Û ÐÝ âß´ûùz_M zÜ fz<ÐÝ âÞ´ûùz_M tÝ fuÐÝ âÞ´ûùz_M nÞ fq
And as a longshot, per this post, I've hit the reset button after getting a lock while configured for both 1.4 and 1.6 ... with no luck.
Any ideas?
... I think my head is going to explode :) ...
Replies to This Discussion
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Permalink Reply by Dave Waller on -
When I try to run this sketch this is the output that I get.
Setting to NMEA modeSetting to real slow modeRequesting relase number$GPGGA,000822.037,,,,,0,0,,,M,,M,,*44<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPRMC,000822.037,V,,,,,0.00,0.00,060180,,,N*4E<D><A>$GPVTG,0.Requesting relase number$GPGGA,0Requesting relase number00823.037,,,,,0,0,,,M,,M,,*45<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPRMC,000823.037,V,,,,,0.00,0.00,060180,,,N*4F<D><A>$GPVTG,0.00,T,,M,Requesting relase number$GPGGA,000824.037,,,,,0,0,,,M,,M,,*42<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPGSV,1,1,00*79<D><A>$GPRMC,000824.037,V,,,,,0.00,0.00,060180Requesting relase number<A>Requesting relase number$GPGGA,000825.037,,,,,0,0,,,M,,M,,*43<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPRMC,000825.037,V,,,,,0.00,0.00,060180,,,N*49<D><A>$GPVTG,0.Requesting relase numberRequesting relase number$GPGGA,000826.037,,,,,0,0,,,M,,M,,*40<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPRMC,000826.037,V,,,,,0.00,0.00,060180,,,N*4A<D><A>$GPVTG,0.Requesting relase numberRequesting relase number$GPGGA,000827.037,,,,,0,0,,,M,,M,,*41<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPRMC,000827.037,V,,,,,0.00,0.00,060180,,,N*4B<D><A>$GPVTG,0.Requesting relase numberRequesting relase number$GPGGA,000828.037,,,,,0,0,,,M,,M,,*4E<D><A>$GPGSA,A,1,,,,,,,,,,,,,,,*1E<D><A>$GPRMC,000828.037,V,,,,,0.00,0.00,060180,,,N*44<D><A>$GPVTG,0.
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