USRP2: Added GPS time support to the sensors interface. gps_time sensor returns epoch time as time_t. Untested.

2 files changed, 9 insertions, 1 deletions

diff --git a/host/lib/usrp/gps_ctrl.cpp b/host/lib/usrp/gps_ctrl.cpp
index ff8e9cee6..ace56e7ed 100644
--- a/host/lib/usrp/gps_ctrl.cpp
+++ b/host/lib/usrp/gps_ctrl.cpp
@@ -172,6 +172,10 @@ public:
     }
     return now;
   }
+  
+  time_t get_epoch_time(void) {
+      return (get_time() - boost::posix_time::from_time_t(0)).total_seconds();
+  }
 
   bool gps_detected(void) {
     return (gps_type != GPS_TYPE_NONE);
diff --git a/host/lib/usrp/usrp2/mboard_impl.cpp b/host/lib/usrp/usrp2/mboard_impl.cpp
index 520ee49a6..7a756087a 100644
--- a/host/lib/usrp/usrp2/mboard_impl.cpp
+++ b/host/lib/usrp/usrp2/mboard_impl.cpp
@@ -372,7 +372,11 @@ void usrp2_mboard_impl::get(const wax::obj &key_, wax::obj &val){
         else if(key.name == "ref_locked") {
             val = sensor_value_t("Ref", this->get_ref_locked(), "locked", "unlocked");
             return;
-        } else {
+        }
+        else if(key.name == "gps_time") {
+            val = sensor_value_t("GPS time", int(_gps_ctrl->get_epoch_time()), "seconds");
+        }
+        else {
             UHD_THROW_PROP_GET_ERROR();
         }
         break;