Tracker: Adding alt_source enum

AntennaTracker/GCS_Mavlink.cpp

@@ -129,7 +129,7 @@ void Tracker::send_waypoint_request(mavlink_channel_t chan)
 
 void Tracker::send_nav_controller_output(mavlink_channel_t chan)
 {
-	float alt_diff = (g.alt_source == 0) ? nav_status.alt_difference_baro : nav_status.alt_difference_gps;
+	float alt_diff = (g.alt_source == ALT_SOURCE_BARO) ? nav_status.alt_difference_baro : nav_status.alt_difference_gps;
 
     mavlink_msg_nav_controller_output_send(
         chan,

AntennaTracker/defines.h

@@ -24,6 +24,12 @@ enum ServoType {
     SERVO_TYPE_CR=2
 };
 
+enum AltSource{
+	ALT_SOURCE_BARO=0,
+	ALT_SOURCE_GPS=1
+
+};
+
 //  Logging parameters
 #define MASK_LOG_ATTITUDE               (1<<0)
 #define MASK_LOG_GPS                    (1<<1)

AntennaTracker/tracking.cpp

@@ -66,7 +66,7 @@ void Tracker::update_bearing_and_distance()
     // calculate pitch to vehicle
     // To-Do: remove need for check of control_mode
     if (control_mode != SCAN && !nav_status.manual_control_pitch) {
-    	if (g.alt_source == 0) {
+    	if (g.alt_source == ALT_SOURCE_BARO) {
     	    nav_status.pitch = degrees(atan2f(nav_status.alt_difference_baro, nav_status.distance));
     	} else {
             nav_status.pitch = degrees(atan2f(nav_status.alt_difference_gps, nav_status.distance));