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| author | Josh Blum <josh@joshknows.com> | 2011-06-22 07:41:56 -0700 |
|---|---|---|
| committer | Josh Blum <josh@joshknows.com> | 2011-06-22 07:41:56 -0700 |
| commit | cad0b57a94c8dc01cd322435259877dbffc26be8 (patch) | |
| tree | 2f70d745518d6f2637ec59627d3f942214860d28 /host/docs/sync.rst | |
| parent | b7f6d905af5993f6c0b554777ab2a4559a36db15 (diff) | |
| parent | ab63a540883bf4c21980ac30b746045e00fffc0a (diff) | |
| download | uhd-cad0b57a94c8dc01cd322435259877dbffc26be8.tar.gz uhd-cad0b57a94c8dc01cd322435259877dbffc26be8.tar.bz2 uhd-cad0b57a94c8dc01cd322435259877dbffc26be8.zip | |
Merge branch 'gps_work'
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 |