Added configuration change for NAV selector 3-way switch

CHANGELOG.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 1.2.0 2021-12-25 
+
+1. Facilty to operate NAV select three-way switch on KPA140
+
 ## 1.2.0 2021-08-28
 
 1.    Corrected path in `BUILDING.md`

CONFIGURATION.md

@@ -26,7 +26,10 @@ There is one **`starter`** element, which specifies the control to be activated
 
 ## SWITCH special
 
-In the Piper configuration file, the TAXI switch is unused, and the normal control string is replaced by `autopilot engage`. This special case is recognised by the `saitekswitch.nas` file, and operates the autopilot engage/disengage for KAP140 on PA28-116. 
+In the Piper configuration file, the TAXI switch is unused, and the normal control string is replaced by `autopilot engage`. This special case is recognised by the `saitekswitch.nas` file, and operates the autopilot engage/disengage for KAP140 on PA28-11x. 
+
+Also for any aircraft with a three-way NAV1/NAV2/GPS such the KAP140 on the PA28-11x, using the switch value  
+`instrumentation/nav-source/selector` will cause the switch to select either the NAV1 or GPS settings.
 
 ## Default Configuration File
 

saitekswitch.nas

@@ -21,8 +21,15 @@ var do_action = func {
             setprop("autopilot/kap140/panel/ap-timer", 5);
             setprop("autopilot/kap140/panel/state", 5);
         }   
-    } else if (thing =="instrumentation/nav-source/selector" and action == 1) {
-    	setprop(thing, 2);  # GPS select
+    } else if (thing =="instrumentation/nav-source/selector") {
+    	if (action ==1) {
+ 		   	setprop(thing, 2);  # GPS select
+    	}
+    	else {
+    		setprop(thing, 0);  # NAV1 select
+    	}
+    	setprop("autopilot/kap140/panel/nav-timer",getprop("sim/time/elapsed-sec"));
+    	setprop("/sim/sounde/switch1", 1);
     } else setprop(thing, action);
 }