first rev2 checkout !
updated board, added component values
USB support for stm32f4 discovery board
Merge pull request #1 from mali1741/disc

USB support for stm32f4 discovery board
added some draft bootloader and drawing library.
the bootloader doesn't work at all and doen't have anyhting running, it's just ideas
Merge branch 'rev2' of https://github.com/makapuf/bitbox into rev2
Changes to bitbox kernel to handle bitbox rev2 real hardware (video, user led, USB joystick)
Added dual analog3 joystick tables
simple LED / button handling, kernel debug
deleted FATFS-DBG example
deleted flou.py
work ok uSD. still not ok
added Makefile and startup
added forgotten files
Made the example finally work.
Had to include a bit more STM lib than  wanted (cleanup will be needed)
removed tinfl, which wont be used (at least there)
had to change linker script to make it work (SDIO_ENABLE seem to crash when called with standard bitbox linker ??)
deleted discovery files (not needed)
Added eeprom library to simulate eeprom to flash & save high scores.
made SD work with some bench gives 3MB/s with 4k buffer to 6
.8 with 16k buffer
deleted html files
made audio work
added system.c to replace st example with bitbox