fix: crash on start when device is not connected

backend/main_server.py

@@ -80,13 +80,22 @@ def broadcast(message):
 
 async def pinecil_monitor(stop_event: asyncio.Event):
  logging.info('Starting pinecil monitor')
+ should_announce_not_found = True
  while not stop_event.is_set():
  if not pinecil.is_connected:
  logging.info('waiting for pinecil...')
- await pinecil.connect()
+ try:
+ await pinecil.connect()
+ except DeviceNotFoundException as e:
+ logging.warning(e.message)
+ response = {'status': 'ERROR', 'message': e.message}
+ if should_announce_not_found:
+ broadcast(json.dumps(response))
+ should_announce_not_found = False
  await asyncio.sleep(1)
  continue
  try:
+ should_announce_not_found = True
  pinecil_data = await pinecil.get_live_data()
  msg = json.dumps({'command': 'LIVE_DATA', 'payload': pinecil_data, 'status': 'OK'})
  broadcast(msg)