C API: Added constructor for empty sensor value handles'

2 files changed, 29 insertions, 0 deletions

diff --git a/host/include/uhd/types/sensors.h b/host/include/uhd/types/sensors.h
index c0037c9f6..68468b04b 100644
--- a/host/include/uhd/types/sensors.h
+++ b/host/include/uhd/types/sensors.h
@@ -51,6 +51,20 @@ typedef enum {
     UHD_SENSOR_VALUE_STRING  = 115
 } uhd_sensor_value_data_type_t;
 
+//! Make an empty UHD sensor value.
+/*!
+ * The purpose of this call is to populate the handle with a valid sensor value
+ * object. Querying this object will always yield 'false'. Typically, this
+ * sensor value object will never be used, but it will allow the handle object
+ * to be used with sensor functions later on.
+ *
+ * \param h the sensor handle in which to place sensor
+ * \returns UHD error code
+ */
+UHD_API uhd_error uhd_sensor_value_make(
+    uhd_sensor_value_handle* h
+);
+
 //! Make a UHD sensor from a boolean.
 /*!
  * \param h the sensor handle in which to place sensor
diff --git a/host/lib/types/sensors_c.cpp b/host/lib/types/sensors_c.cpp
index cec4fbaff..5760b0c7e 100644
--- a/host/lib/types/sensors_c.cpp
+++ b/host/lib/types/sensors_c.cpp
@@ -20,6 +20,21 @@
 #include <string>
 #include <string.h>
 
+uhd_error uhd_sensor_value_make(
+    uhd_sensor_value_handle* h
+){
+    try{
+        *h = new uhd_sensor_value_t;
+    }
+    catch(...){
+        return UHD_ERROR_UNKNOWN;
+    }
+
+    UHD_SAFE_C_SAVE_ERROR((*h),
+        (*h)->sensor_value_cpp = new uhd::sensor_value_t("", false, "", "");
+    )
+}
+
 uhd_error uhd_sensor_value_make_from_bool(
     uhd_sensor_value_handle* h,
     const char* name,