diff options
Diffstat (limited to 'driver_tsip.c')
| -rw-r--r-- | driver_tsip.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/driver_tsip.c b/driver_tsip.c index 5647c97e..8685297f 100644 --- a/driver_tsip.c +++ b/driver_tsip.c @@ -1129,8 +1129,18 @@ static void tsip_mode(struct gps_device_t *session, int mode) #ifdef TIMEHINT_ENABLE static double tsip_time_offset(struct gps_device_t *session UNUSED) { - /* FIX-ME: is a constant offset right here? */ - return 0.075; + /* + * the offset depends on the generation and is not reliable, it often + * depends on the number of SV being tracked + * some example measurements: + * Trimble Resolution T : 0.03s to 0.200s + * Trimble Resolution SMTx: 0.300 to 0.500s (unpredictable) + * Trimble RES SMT 360 : 0.028s (this appears very stable) + * + * Trimble users tend to be very picky, so we leave the offset to them. + * If we could detect the Trimble model maybe we could pick an offset. + */ + return 0.0; } #endif /* TIMEHINT_ENABLE */ |