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| author | Gary E. Miller <gem@rellim.com> | 2018-09-19 21:17:10 -0700 |
|---|---|---|
| committer | Gary E. Miller <gem@rellim.com> | 2018-09-19 21:17:10 -0700 |
| commit | 26e913ea3ab47b1b6007bb60483e3940cb921e85 (patch) | |
| tree | c5c2217dfaa8db73367a11c39cc1dc6d07987a31 /driver_nmea0183.c | |
| parent | 0711df2be32e51a64d1e4dcef5e427412344d38a (diff) | |
| download | gpsd-26e913ea3ab47b1b6007bb60483e3940cb921e85.tar.gz | |
driver_nmea0183: Fix NMEA PRN mapping in comments.
Diffstat (limited to 'driver_nmea0183.c')
| -rw-r--r-- | driver_nmea0183.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/driver_nmea0183.c b/driver_nmea0183.c index 79d31afa..a15c2ed0 100644 --- a/driver_nmea0183.c +++ b/driver_nmea0183.c @@ -575,18 +575,19 @@ static int nmeaid_to_prn(char *talker, int satnum) { /* * According to https://github.com/mvglasow/satstat/wiki/NMEA-IDs + * and u-blox documentation. * NMEA IDs can be roughly divided into the following ranges: * * 1..32: GPS - * 33..54: Various SBAS systems (EGNOS, WAAS, SDCM, GAGAN, MSAS) - * ... some IDs still unused - * 55..64: not used (might be assigned to further SBAS systems) - * 65..88: GLONASS - * 89..96: GLONASS (future extensions?) - * 97..192: not used (SBAS PRNs 120-151 fall in here) - * 193..195: QZSS - * 196..200: QZSS (future extensions?) - * 201..235: Beidou + * 33..64: Various SBAS systems (EGNOS, WAAS, SDCM, GAGAN, MSAS) + * 65..96: GLONASS + * 152..158: Various SBAS systems (EGNOS, WAAS, SDCM, GAGAN, MSAS) + * 173..182: IMES + * 193..197: QZSS + * 201..235: Beidou (not NMEA, not u-blox?) + * 301..336: Galileo + * 401..437: Beidou + * null: GLONASS unused * * The issue is what to do when GPSes from these different systems * fight for IDs in the 1-32 range, as in this pair of Beidou sentences |