diff options
| -rw-r--r-- | host/include/uhd/usrp/multi_usrp.hpp | 8 | ||||
| -rw-r--r-- | host/lib/usrp/multi_usrp.cpp | 9 |
2 files changed, 17 insertions, 0 deletions
diff --git a/host/include/uhd/usrp/multi_usrp.hpp b/host/include/uhd/usrp/multi_usrp.hpp index 5380d177d..98ba07fc0 100644 --- a/host/include/uhd/usrp/multi_usrp.hpp +++ b/host/include/uhd/usrp/multi_usrp.hpp @@ -145,6 +145,14 @@ public: virtual void set_time_unknown_pps(const time_spec_t &time_spec) = 0; /*! + * Are the times across all motherboards in this configuration synchronized? + * Checks that all time registers are approximately close but not exact, + * given that the RTT may varying for a control packet transaction. + * \return true when all motherboards time registers are in sync + */ + virtual bool get_time_synchronized(void) = 0; + + /*! * Issue a stream command to the usrp device. * This tells the usrp to send samples into the host. * See the documentation for stream_cmd_t for more info. diff --git a/host/lib/usrp/multi_usrp.cpp b/host/lib/usrp/multi_usrp.cpp index 024a6152d..876f1a3fc 100644 --- a/host/lib/usrp/multi_usrp.cpp +++ b/host/lib/usrp/multi_usrp.cpp @@ -154,6 +154,15 @@ public: } } + bool get_time_synchronized(void){ + for (size_t m = 1; m < get_num_mboards(); m++){ + time_spec_t time_0 = _mboard(0)[MBOARD_PROP_TIME_NOW].as<time_spec_t>(); + time_spec_t time_i = _mboard(m)[MBOARD_PROP_TIME_NOW].as<time_spec_t>(); + if (time_i < time_0 or (time_i - time_0) > time_spec_t(0.01)) return false; + } + return true; + } + void issue_stream_cmd(const stream_cmd_t &stream_cmd){ for (size_t m = 0; m < get_num_mboards(); m++){ _mboard(m)[MBOARD_PROP_STREAM_CMD] = stream_cmd; |