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| author | Eric S. Raymond <esr@thyrsus.com> | 2011-09-18 07:41:36 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2011-09-18 07:41:36 -0400 |
| commit | e11a617ab0943bfad775f051a1b256010132a420 (patch) | |
| tree | 894addb33e13c13f2a10ed4a38bc489a20eb0973 /driver_sirf.c | |
| parent | 5398d10dc20ef7433818f422396b80475b6a8b22 (diff) | |
| download | gpsd-e11a617ab0943bfad775f051a1b256010132a420.tar.gz | |
Sort out some issues with PRN handling.
Add macros for classifying PRNs into GPS, GLONASS, DGPS. Document the PRN
ranges on the gps_json manual page.
It turns out that U.S. GPS authorities reserve 1-64 for GPS birds, not just
1-32. So the way we map GLONASS PRNs had to change. This required a
regression-test rebuild for the geostar driver.
Diffstat (limited to 'driver_sirf.c')
| -rw-r--r-- | driver_sirf.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/driver_sirf.c b/driver_sirf.c index 3503408a..d6638369 100644 --- a/driver_sirf.c +++ b/driver_sirf.c @@ -2,7 +2,8 @@ * This is the gpsd driver for SiRF GPSes operating in binary mode. * It also handles uBlox, a SiRF derivative. * - * The advantage: Reports climb/sink rate (raw-mode clients won't see this). + * The advantages: Reports climb/sink rate (raw-mode clients won't see this). + * Also, we can flag DGPS satellites used in the skyview when SBAS is in use. * The disadvantages: Doesn't return PDOP or VDOP, just HDOP. * * Chris Kuethe, our SiRF expert, tells us: @@ -511,7 +512,7 @@ static gps_mask_t sirf_msg_svinfo(struct gps_device_t *session, session->gpsdata.satellites_visible = st; /* mark SBAS sats in use if SBAS was in use as of the last MID 27 */ for (i = 0; i < st; i++) - if (session->gpsdata.PRN[i] > 100 && session->driver.sirf.sbas != 0) + if (DGPS_PRN(session->gpsdata.PRN[i]) && session->driver.sirf.sbas != 0) session->gpsdata.used[i] = true; #ifdef NTPSHM_ENABLE if (st < 3) { |