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| author | Eric S. Raymond <esr@thyrsus.com> | 2009-03-06 22:04:01 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2009-03-06 22:04:01 +0000 |
| commit | 08b3d82018451902516f743731410f1d164d76e6 (patch) | |
| tree | 90e731ebe76bd8f1b4eae8b23ce4b03f09d6022d /driver_ubx.c | |
| parent | ff044c2b0c464970e1dcf6951436b642eba704fd (diff) | |
| download | gpsd-08b3d82018451902516f743731410f1d164d76e6.tar.gz | |
Framework for UBX rate switcher, everything except the field value calculation.
Chris, you have a UBX and a traffic snooper, that's for you to figure
out and test.
Diffstat (limited to 'driver_ubx.c')
| -rw-r--r-- | driver_ubx.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/driver_ubx.c b/driver_ubx.c index de6029a4..dd0b1507 100644 --- a/driver_ubx.c +++ b/driver_ubx.c @@ -659,6 +659,28 @@ static bool ubx_speed(struct gps_device_t *session, /*@ -charint +usedef +compdef */ return true; } + +static bool ubx_rate(struct gps_device_t *session, double cycletime) +/* change the sample rate of the GPS */ +{ + /*@ -type @*/ + unsigned char msg[6] = { + 0x00, 0x00, /* U2: Measurement rate (ms) */ + 0x00, 0x00, /* U2: Navigation rate (cycles) */ + 0x00, 0x00, /* U2: Alignment to reference time: 0 = UTC, !0 = GPS */ + }; + /*@ +type @*/ + + gpsd_report(LOG_IO, "UBX rate change, report every %f secs\n", cycletime); + + /* + * Manual says: + * Navigation Update Rate (1/s) = 1000 / (NavigationRate * MeausrementRate(ms)). + * ??? + */ + + return ubx_write(session, 0x06, 0x08, msg, 6); /* CFG-RATE */ +} #endif /* ALLOW_RECONFIGURE */ /* This is everything we export */ @@ -680,7 +702,7 @@ const struct gps_type_t ubx_binary = { .configurator = ubx_configure, /* Enable what reports we need */ .speed_switcher = ubx_speed, /* Speed (baudrate) switch */ .mode_switcher = ubx_nmea_mode, /* Switch to NMEA mode */ - .rate_switcher = NULL, /* Message delivery rate switcher */ + .rate_switcher = ubx_rate, /* Message delivery rate switcher */ .cycle_chars = -1, /* Number of chars per report cycle */ .revert = ubx_revert, /* Undo the actions of .configurator */ #endif /* ALLOW_RECONFIGURE */ |