diff options
| author | Eric S. Raymond <esr@thyrsus.com> | 2005-07-11 12:32:41 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2005-07-11 12:32:41 +0000 |
| commit | b89766bedaa4143db4aa54496cc3ad459fc6996c (patch) | |
| tree | 91e00b70309fab5542bd51d35a361e209f286702 /drivers.c | |
| parent | d56e47611cb5d2966bd7eb923dcb51bd8c66fcd0 (diff) | |
| download | gpsd-b89766bedaa4143db4aa54496cc3ad459fc6996c.tar.gz | |
Architecture extension; handle variable sample rates.
Diffstat (limited to 'drivers.c')
| -rw-r--r-- | drivers.c | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -101,6 +101,8 @@ static struct gps_type_t nmea = { pass_rtcm, /* write RTCM data straight */ NULL, /* no speed switcher */ NULL, /* no mode switcher */ + NULL, /* no sample-rate switcher */ + -1, /* not relevant, no rate switch */ NULL, /* no wrapup */ 1, /* updates every second */ }; @@ -122,6 +124,8 @@ static struct gps_type_t fv18 = { pass_rtcm, /* write RTCM data straight */ NULL, /* no speed switcher */ NULL, /* no mode switcher */ + NULL, /* no sample-rate switcher */ + -1, /* not relevant, no rate switch */ NULL, /* no wrapup */ 1, /* updates every second */ }; @@ -183,6 +187,8 @@ static struct gps_type_t sirfII_nmea = { pass_rtcm, /* write RTCM data straight */ sirf_speed, /* we can change speeds */ sirf_mode, /* there's a mode switch */ + NULL, /* no sample-rate switcher */ + -1, /* cycle char count not relevant, no rate switch */ NULL, /* no wrapup */ 1, /* updates every second */ }; @@ -220,6 +226,8 @@ static struct gps_type_t tripmate = { pass_rtcm, /* send RTCM data straight */ NULL, /* no speed switcher */ NULL, /* no mode switcher */ + NULL, /* no sample-rate switcher */ + -1, /* not relevant, no rate switch */ NULL, /* no wrapup */ 1, /* updates every second */ }; @@ -266,6 +274,8 @@ static struct gps_type_t earthmate = { NULL, /* don't send RTCM data */ NULL, /* no speed switcher */ NULL, /* no mode switcher */ + NULL, /* no sample-rate switcher */ + -1, /* not relevant, no rate switch */ NULL, /* no wrapup code */ 1, /* updates every second */ }; @@ -323,12 +333,18 @@ static void itrax_initializer(struct gps_device_t *session) ITRAX_MODESTRING, session->gpsdata.baudrate); } -static bool itrax_speed(struct gps_device_t *session, unsigned int speed) +static bool itrax_speed(struct gps_device_t *session, speed_t speed) /* change the baud rate */ { return nmea_send(session->gpsdata.gps_fd, ITRAX_MODESTRING, speed) >= 0; } +static bool itrax_rate(struct gps_device_t *session, double rate) +/* change the sample rate of the GPS */ +{ + return nmea_send(session->gpsdata.gps_fd, "$PSFT,FIXRATE,%d", rate) >= 0; +} + static void itrax_wrap(struct gps_device_t *session) /* stop navigation, this cuts the power drain */ { @@ -347,6 +363,8 @@ static struct gps_type_t itrax = { pass_rtcm, /* write RTCM data straight */ itrax_speed, /* no speed switcher */ NULL, /* no mode switcher */ + itrax_rate, /* there's a sample-rate switcher */ + 438, /* not relevant, no rate switch */ itrax_wrap, /* sleep the receiver */ 1, /* updates every second */ }; |