usrp: dboard sensors fix, populate for tvrx, and should be empty on basics/unknown

4 files changed, 9 insertions, 4 deletions

diff --git a/host/lib/usrp/dboard/db_basic_and_lf.cpp b/host/lib/usrp/dboard/db_basic_and_lf.cpp
index ff93f1d89..64d4a5bee 100644
--- a/host/lib/usrp/dboard/db_basic_and_lf.cpp
+++ b/host/lib/usrp/dboard/db_basic_and_lf.cpp
@@ -162,7 +162,7 @@ void basic_rx::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_SENSOR_NAMES:
-        val = prop_names_t(1, ""); //vector of 1 empty string
+        val = std::vector<std::string>(); //empty
         return;
 
     case SUBDEV_PROP_CONNECTION:
@@ -272,7 +272,7 @@ void basic_tx::tx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_SENSOR_NAMES:
-        val = prop_names_t(1, ""); //vector of 1 empty string
+        val = std::vector<std::string>(); //empty
         return;
 
     case SUBDEV_PROP_CONNECTION:
diff --git a/host/lib/usrp/dboard/db_tvrx.cpp b/host/lib/usrp/dboard/db_tvrx.cpp
index 3b8b276e0..907d798dd 100644
--- a/host/lib/usrp/dboard/db_tvrx.cpp
+++ b/host/lib/usrp/dboard/db_tvrx.cpp
@@ -463,6 +463,10 @@ void tvrx::rx_get(const wax::obj &key_, wax::obj &val){
         val = 6.0e6;
         return;
 
+    case SUBDEV_PROP_SENSOR_NAMES:
+        val = std::vector<std::string>(); //empty
+        return;
+
     default: UHD_THROW_PROP_GET_ERROR();
     }
 }
diff --git a/host/lib/usrp/dboard/db_unknown.cpp b/host/lib/usrp/dboard/db_unknown.cpp
index 0587d015c..cd7ffe348 100644
--- a/host/lib/usrp/dboard/db_unknown.cpp
+++ b/host/lib/usrp/dboard/db_unknown.cpp
@@ -142,7 +142,7 @@ void unknown_rx::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_SENSOR_NAMES:
-        val = prop_names_t(1, ""); //vector of 1 empty string
+        val = std::vector<std::string>(); //empty
         return;
 
     case SUBDEV_PROP_CONNECTION:
@@ -242,7 +242,7 @@ void unknown_tx::tx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_SENSOR_NAMES:
-        val = prop_names_t(1, ""); //vector of 1 empty string
+        val = std::vector<std::string>(); //empty
         return;
 
     case SUBDEV_PROP_CONNECTION:
diff --git a/host/lib/usrp/dboard_manager.cpp b/host/lib/usrp/dboard_manager.cpp
index 3f4b5a511..0326c28ce 100644
--- a/host/lib/usrp/dboard_manager.cpp
+++ b/host/lib/usrp/dboard_manager.cpp
@@ -483,6 +483,7 @@ void dboard_manager::populate_prop_tree_from_subdev(
     subtree->create<std::string>("name").set(subdev[SUBDEV_PROP_NAME].as<std::string>());
 
     const prop_names_t sensor_names = subdev[SUBDEV_PROP_SENSOR_NAMES].as<prop_names_t>();
+    subtree->create<int>("sensors"); //phony property so this dir exists
     BOOST_FOREACH(const std::string &name, sensor_names){
         subtree->create<sensor_value_t>("sensors/" + name)
             .publish(boost::bind(&get_sensor, subdev, name));