SCSI Mass Storage firmware for ATmega16u2

This firmware turns your Arduino UNO into a mass storage device. It does this by flashing microchip firmware ATmega16u2. The firmware does the following:

• Return appropriate descriptors to let the host load the appropriate FAT/SCSI driver.
• Simulate a virtual FAT16 filesystem.
• Can handle SCSI read and write commands but will not persist any data on bootloader area ATmega328p, nor in PROGMEM. Indeed we clear the buffer when the host try to write something on the endpoint. memset(buf, 0, sizeof(buf));

Build

$ git clone https://github.com/abcminiuser/lufa lufa
$ cd lufa/Projects
$ git clone https://github.com/alexandrezfs/scsi-firmware-uno
$ cd scsi-firmware-uno
$ make

You need to have avr-gcc etc in PATH.

Installing

• Place the ATmega16u2 in DFU update mode by shorting two pins sticking out closest to the USB plug.
• On macOS or Linux install dfu-programer and run make install.

License

MIT