USB CDC bootloader required

[gfwilliams]

We need a USB bootloader so that Espruino devices can be reflashed.

While we could use DFU, it makes a lot of sense to use a USB CDC (fake serial) bootloader implementing a protocol that's compatible with the built-in RS232 one. That way, Espruino can be reflashed from the Web IDE.

[ebirger]

Would also be nice if it had a mass storage bootloader (like Freescale KL25Z for example)
This way modules / firmware could also be "saved as" from browsers

[gfwilliams]

Yes - although there is something to be said for using exactly the same means of communication for normal operation, and bootloader. Potentially the MatchboxARM bootloader could be a nice fit for mass storage though. It seems to have very modest flash requirements.

[gfwilliams]

Now added: 6eedf8d

This is currently pretty basic. It could do with some work but it is ok, and only takes around 8kb. It also appears as exactly the same USB CDC device as Espruino, to save all the messing around with drivers.