Rockbox

The remote pin can be serial input or a plain output. So
a "software TX" can be realized, to e.g. communicate
with external microcontrollers forming a car CD changer
emulator, or some other kind of "intelligent" remote.

The patch is not in the shape I'd like it to (cleanly
separating a serial driver from the remote control service
using it), but a start; to be updated. It has some
preparation for a generic CD changer protocol.

 rockbox-daily-20040422-softtx/apps/debug_menu.c         |  101 ++++
 rockbox-daily-20040422-softtx/apps/main.c               |    9 
 rockbox-daily-20040422-softtx/firmware/drivers/serial.c |  373 ++++++++++++++--
 rockbox-daily-20040422-softtx/firmware/export/serial.h  |    4 
 4 files changed, 441 insertions(+), 46 deletions(-)