Allow overwriting of hostname from config (#170)

src/config.py.example

@@ -35,6 +35,10 @@ display_control = False
 # user for which display_control is enabled
 os_user = 'os_user_to_be_replaced'
 
+# By default, the 'hostname' will be used as device name in home assistant.
+# To set a custom device name, uncomment the following line and set the custom name.
+# ha_device_name = 'device_name_to_use'
+
 # Binary sensor that displays when there are updates
 git_update = True
 

src/rpi-cpu2mqtt.py

@@ -982,6 +982,9 @@ stop_event = threading.Event()
 script_dir = os.path.dirname(os.path.realpath(__file__))
 # get device host name - used in mqtt topic
 # and adhere to the allowed character set
+if hasattr(config, 'ha_device_name') and config.ha_device_name:
+    hostname = re.sub(r'[^a-zA-Z0-9_-]', '_', config.ha_device_name)
+else:
     hostname = re.sub(r'[^a-zA-Z0-9_-]', '_', socket.gethostname())
 
 if __name__ == '__main__':