Update rpitx.py add force APRS with a

rpitx.py

@@ -263,13 +263,16 @@ debug_mode = 0  #no debugging rpitx
 
 if __name__ == "__main__":
 
+	mode = "x"
 	if (len(sys.argv)) > 1:
 #        	print("There are arguments!")
 		if (('d' == sys.argv[1]) or ('-d' in sys.argv[1])):
 			debug_mode = 1
-			
+		else if (('a' == sys.argv[1]) or ('-a' in sys.argv[1])):	
+			mode = "a"
+			print("Forcing APRS mode")
 	print(transmit)
-
+	if ( mode == "x"):
 		try:
 			file = open("/home/pi/CubeSatSim/.mode")
 			mode = file.read(1)