restart position without the MiKNOW UI

Hello ONT,

We are trying to run our minion directly from the command line. For this we are using the start_protocol.py.
We initially had an authentication issue (Issues #34), however we set "--no-tls True" as a workaround.
Now when running we receive the following error:

`No flow cell present in position MN39033 (running)`

However, the flow cell is definitely inserted in the minion. I can see that "position_connection.device.get_flow_cell_info()" is used to obtain the flow cell information which is defined in minknow_api.device_service.DeviceService.
Notably, using "position_connection = spec.position.connect()" I can see that the device is running:

	[FlowCellPosition('localhost', {name: "MN39033"
	state: STATE_RUNNING
	rpc_ports {
	  secure: 8001
	  insecure: 8000
	  secure_grpc_web: 8002
	}
	})]

Also, using "position_connection.device.get_device_info()" I can return information on the device;

	device_info device_id: "MN39033"
	max_channel_count: 512
	max_wells_per_channel: 4
	digitisation: 8192

So cool, I can see the device, just not the flow cell. If restart the position using the MiKNOW UI the start_protocol.py script progresses (alas to another issue);

	Failed to find protocol for position MN39033 (running)
	Requested protocol:
	  product-code: None
	  kit: SQK-LSK109
	  basecalling: False
	  basecall_config: None
	  barcode-kits: None
	  barcoding: False

However, I can now retrieve the flow cell info using "position_connection.device.get_flow_cell_info()" after restarting the position with MiKNOW UI

          has_flow_cell: true
          channel_count: 126
          wells_per_channel: 1
          has_adapter: true
          adapter_id: "FA-05846"
          temperature_offset: 327.6700134277344
          asic_version: "IA02D"
          asic_id_str: "7735955"

So this leads to my question, how do we restart the position without the MiKNOW UI? I am probably missing something obvious and I apologize in advance. Thank you for any help.

Start by reading start_protocol.py and the minknow_api.device_service.DeviceService usage described in the report, then inspect the available position connection and restart-related API entry points. Compare the command-line flow with the state observed after restarting through the MiKNOW UI. Done means a command-line workflow can restart the position and retrieve flow-cell information without the UI.