Nokia N900 (charging battery not possible with free software yet)

[Timo Juhani Lindfors]

Rui Miguel Silva Seabra <rms at 1407.org> writes:
> No, it's firmware running on their chips. If it was the driver than the
> following command would result in ONE instead of ZERO :)

You can have drivers in userland too. For example I understood that
you can't charge the N900 battery with free software.

http://wiki.maemo.org/Mer/Documentation/BME_Protocol

describes some reverse-engineering efforts on that one.