Feature Request - Send a file to the serial port.

[mdv55]

Feature Request:
Add a function to send a file to the serial port. The source of the content could be

1. a file on the local disk
2. a file retrieved from a network URL.

There is no protocol or handshake (except optionally honoring xon-xoff) on the serial interface.

This is equivalent to TeraTerm's File->Send or to minicom Ctrl-A -> S(send) -> ASCII.

A use case for this feature is to send an Intel .hex file to an embedded device to update firmware over a serial port via the device's bootloader. The target device only has a single USB port with an FTDI chip that implements a serial interface. For, example, a laptop/Chromebook has a network connection. The data flow is server -> laptop to retrieve the file over the network and then terminal app (like TeraTerm and potentially BeagleTerm) to send the file over the serial interface to device. Having this function in BeagleTerm would provide Chromebook users a feature similar to other terminal apps.

Thanks to @randomlyknighted for some helpful clarifying questions and feedback on the Slack channel to help better describe this request.