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| author | Nick Foster <nick@ettus.com> | 2011-06-17 15:09:16 -0700 |
|---|---|---|
| committer | Nick Foster <nick@ettus.com> | 2011-06-17 15:09:16 -0700 |
| commit | 6f6364f73aad1262fdbe88ad97128f7844764c99 (patch) | |
| tree | fd8f72d6143e7e543e4e62b2f4c7f9acf94efbb7 /host/docs/sync.rst | |
| parent | 7af605b247ee9331c29c23229252a101b7d40352 (diff) | |
| download | uhd-6f6364f73aad1262fdbe88ad97128f7844764c99.tar.gz uhd-6f6364f73aad1262fdbe88ad97128f7844764c99.tar.bz2 uhd-6f6364f73aad1262fdbe88ad97128f7844764c99.zip | |
UHD: implemented gps_locked sensor. usrp2 mboard doesn't init VITA time if time not valid.
Diffstat (limited to 'host/docs/sync.rst')
| -rw-r--r-- | host/docs/sync.rst | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/host/docs/sync.rst b/host/docs/sync.rst index 9284d8e33..3cb13fbf3 100644 --- a/host/docs/sync.rst +++ b/host/docs/sync.rst @@ -102,22 +102,11 @@ and the user can also parse this string to determine GPS time: usrp->set_time_next_pps(uhd::time_spec_t(gps_time+1)); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Method 3 - query the gps_time sensor +Method 3 - internal GPSDO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -This is a variant of method 2 for USRPs with internal GPSDOs. -The user can query the gps_time sensor to wait for the NMEA string. - -:: - - //wait for NMEA string from internal GPSDO - usrp->get_mboard_sensor("gps_time"); - usrp->set_time_next_pps(uhd::time_spec_t(0.0)); - - -- OR -- - - //wait for the NMEA string and set GPS time - const time_t gps_time = usrp->get_mboard_sensor("gps_time").to_int(); - usrp->set_time_next_pps(uhd::time_spec_t(gps_time+1)); +USRPs with internal GPSDOs properly configured will automatically +configure themselves to set the VITA time to current UTC time. See the +GPSDO application note for more details. ------------------------------------------------------------------------ Synchronizing channel phase |