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Connecting

The Connect screen opens the serial link between your browser and the machine.

The Connect screen

Which port

Connect through the machine's control port: the USB-serial adapter on the controller's secondary serial (P30/P32). On the Edge carrier that is header J4, through the isolator; on a P2-EVAL bench, an FTDI adapter with its TX on P30 and its RX on P32.

Opening the control port never restarts the machine, so connecting, refreshing the page and auto-reconnect are safe even mid-test.

The Prop Plug on header J1 (or the P2-EVAL's own USB) is the programming port. It belongs to the Firmware screen: opening it restarts the machine, and the firmware does not answer the app there. The two ports compares them.

Connect to a machine

  1. Power the machine on and plug in the control-port adapter.
  2. Leave Baud rate at 2,000,000. It matches the firmware; any other value shows a reminder that the hardware expects 2,000,000.
  3. Connect:
    • A port you have used before is listed under Previously granted devices: click Connect beside it.
    • Otherwise click Connect device (Add device… when the list is not empty) and pick the control port in the browser's chooser.

The port the Firmware screen programs through is labelled the Firmware page's programming port in the list.

When the link is up, the status bar turns green and shows the port and the firmware version. Responding appears once the firmware is answering:

Connected, responding

Granted devices

The browser remembers the ports you have allowed, per browser profile. Refresh re-reads the list, Add device… allows a new one, and Forget removes one.

Ports are named by their USB vendor and product id (for example USB 403:6001), which is all the browser exposes. Two adapters of the same model look identical.

Disconnecting and reconnecting

  • Disconnect closes the port. The machine is not affected.

  • If the link drops (cable pulled, machine power-cycled), the screen shows Connection to the device was lost with a Reconnect button, which retries the same port and baud rate. The app also reconnects by itself when the adapter is plugged back in.

    The Connect screen after the link was lost

  • If two granted ports have the remembered adapter's USB id, the app does not guess between them: pick the control port yourself.

  • To restart the machine, power-cycle it, or use Reboot now after writing the machine configuration.

Connected vs. Responding

Connected means the serial port is open. Responding means the firmware is answering. Connected with Not responding is covered in Connection problems.