TactilityC: Forgot the most important function, getting the unit string of course!

TactilityC/Include/tt_hal_radio.h

@@ -128,6 +128,18 @@ RadioParameterStatus tt_hal_radio_set_parameter(RadioHandle handle, RadioParamet
  */
 RadioParameterStatus tt_hal_radio_get_parameter(RadioHandle handle, RadioParameter parameter, float *value);
 
+/**
+ * Get the unit string of a parameter.
+ * If the parameter isn't available, the returned string is empty.
+ * If the unit string does not fit into the provided character array,
+ * it is truncated but always null terminated.
+ * @param[in] handle the radio driver handle
+ * @param[in] parameter the parameter
+ * @param[out] str character array to store the unit string into
+ * @param[in] maxSize the maximum size the array str can hold
+ */
+void tt_hal_radio_get_parameter_unit_str(RadioHandle handle, RadioParameter parameter, char str[], unsigned maxSize);
+
 /**
  * Check whenever the radio driver object can transmit a certain modulation.
  * @param[in] handle the radio driver handle

TactilityC/Source/tt_hal_radio.cpp

@@ -69,6 +69,17 @@ extern "C" {
         return fromCpp(wrapper->device->getParameter(toCpp(parameter), *value));
     }
 
+    void tt_hal_radio_get_parameter_unit_str(RadioHandle handle, RadioParameter parameter, char str[], unsigned maxSize) {
+        auto wrapper = static_cast<DeviceWrapper*>(handle);
+        assert(str);
+        std::string unitString = wrapper->device->getParameterUnit(toCpp(parameter)).toString();
+        size_t i = 0;
+        for (; i < (maxSize - 1); ++i) {
+            str[i] = unitString[i];
+        }
+        str[i] = '\0';
+    }
+
     bool tt_hal_radio_can_transmit(RadioHandle handle, Modulation modulation) {
         auto wrapper = static_cast<DeviceWrapper*>(handle);
         return wrapper->device->canTransmit(toCpp(modulation));