Update aprs_in.py stop rpitx and CubeSatSim before change mode

aprs_in.py

@@ -133,11 +133,14 @@ if __name__ == "__main__":
 			print("Command_count: ")
 			print(command_count)	
 			
-			print("\n/home/pi/CubeSatSim/config -" + mode)
-			system("/home/pi/CubeSatSim/config -" + mode)
 			GPIO.output(txLed, 0)
 			GPIO.output(powerPin, 0)
 			system("sudo systemctl stop rpitx")
+			system("sudo systemctl stop cubesatsim")
+			
+			print("\n/home/pi/CubeSatSim/config -" + mode)
+			system("/home/pi/CubeSatSim/config -" + mode)
+
 			
 			change_mode = False
 	print("Done")