explicitly converting list to string befor sending it

pin/__init__.py

@@ -330,7 +330,7 @@ class DebugPinController(PinControllerBase):
             return False
         pins = digilib.misc.parse_to_int_list(args[0])
         [state] = digilib.misc.parse_to_int_list(args[1])
-        respond(_gpio.input(pins,state))
+        respond(str(_gpio.input(pins,state)))
 
 if __name__ == "__main__":
     pass