Automatic com port selection

[apla]

cli precondition:

cuwire is called with upload or console command along with board option but no port option.

and

User has either:

• one mcu board with native USB plugged in
• one board via USB UART adapter plugged in, and the board doesn't have native USB

gui precondition:

Application has Automatic port selection setting turned on

and

User has either:

• one mcu board with native USB plugged in
• one board via USB UART adapter plugged in, and the board doesn't have native USB

Flow for native usb board:

1. A user selects a board.
2. A configuration for this board contains a usb vendorId:productId
3. Port list refreshes automatically
4. The app sees that the list contains one and only one port with the corresponding vendorId:productId
5. The app selects this port automatically for firmware upload.

Flow for board plugged in via USB UART adapter:

1. A user selects a board.
2. A configuration for this board doesn't contain a usb vendorId:productId
3. Port list refreshes automatically
4. The app sees that the list contains one and only one port with the vendorId:productId of known USB UART adapter (ftdi, max232, plc2303, cp210x, ch341 at least)
5. The app selects this port automatically for firmware upload.

Special conditions:

This use case doesn't apply:

• If user plugged in multiple boards with one vendorId:productId
• If user selected non-default programmer

Implementation details:

• api add vendorId:productId of usb uart
• cli display board name along with port name for matching vendorId:productId e4f853b
• gui display board name along with port name for matching vendorId:productId
• cli guess port name if board name is provided f484adf
• gui autoscan serial ports in 1 minute
• gui should have option in settings to enable or disable automatic port selection
• gui temporarily turn off autoselection if user select port manually after port autoselection (when to turn on?)