The rwi_* family of drivers are used to control RWI robots using
RWI's Mobility software. To date, these drivers have been tested on the
B21r, but they should work with other Mobility-controlled robots.
This documentation may be incomplete and/or wrong, because I (brian)
didn't write the driver. Comments and corrections from users are welcome.
Although all the Mobility interaction is actually done in a single thread, the
different Mobility devices are accessed through different Player drivers, each
supporting a different interface and supporting some subset of configuration