AP_Notify: added tones for tuning stages

libraries/AP_Notify/AP_Notify.h

@@ -87,6 +87,9 @@ public:
         uint16_t compass_cal_saved      : 1;    // 1 when compass calibration was just saved
         uint16_t compass_cal_failed     : 1;    // 1 when compass calibration has just failed
         uint16_t compass_cal_canceled   : 1;    // 1 when compass calibration was just canceled
+        uint16_t tune_started           : 1;    // tuning a parameter has started
+        uint16_t tune_next              : 1;    // tuning switched to next parameter
+        uint16_t tune_save              : 1;    // tuning saved parameters
     };
 
     // the notify flags are static to allow direct class access

libraries/AP_Notify/ToneAlarm_PX4.cpp

@@ -296,6 +296,19 @@ void ToneAlarm_PX4::update()
             stop_cont_tone();
         }
     }
+
+    if (AP_Notify::events.tune_started) {
+        play_tone(AP_NOTIFY_PX4_TONE_LOUD_NEU_FEEDBACK);
+        AP_Notify::events.tune_started = 0;        
+    }
+    if (AP_Notify::events.tune_next) {
+        play_tone(AP_NOTIFY_PX4_TONE_LOUD_POS_FEEDBACK);
+        AP_Notify::events.tune_next = 0;        
+    }
+    if (AP_Notify::events.tune_save) {
+        play_tone(AP_NOTIFY_PX4_TONE_QUIET_READY_OR_FINISHED);
+        AP_Notify::events.tune_save = 0;
+    }
 }
 
 #endif // CONFIG_HAL_BOARD == HAL_BOARD_PX4