Fix string identifier format

rpi/hardware/generic/serial_reader.py

@@ -36,6 +36,7 @@ class SerialReader:
         while self._run_event.is_set():
             line = self.serial.readline()
             if line:
+                print("Generic method")
                 data = line.decode('utf-8', errors='ignore')
                 self._notify(data)
 
@@ -47,4 +48,4 @@ if __name__ == "__main__":
 
     reader = SerialReader("/dev/ttyUSB1", 57600)
     reader.subscribe(callback)
-    reader.start()
+    reader.start()