Add logitech firmware dumping tool

[ranma]

No description provided.

[ijarraki]

I really do appreciate the ability to back up the stock firmware but how in the name of all that is holy are we supposed to flash the files made by this tool back onto the device?

The included tools seem incompatible with the backup files, please advise.

[ranma]

Just convert the .bin into an intel hex file (.ihx), see the toplevel makefile:

objcopy -I binary bin/dongle.formatted.bin -O ihex bin/dongle.formatted.ihx

[ijarraki]

I figured it out on my own using bin2hex but thank you :).

Any way you know of to dump and flash firmware onto RQR24 dongles? If I were able to dump the firmware I could flash it via Logitechs old flasher, suggestions?

[ijarraki]

I was mostly worried about the infopage.bin created by your backup tool and did not want to brick the dongle :)

[ranma]

You shouldn't need to touch the infopage data, but it might be good to keep as a backup. It's a separate flash area and only some parts of it are writeable without using the SPI interface for programming.
Also generally the bootloader area in the device is write-protected, but the bootloader extends into the non-writeprotected area at the end of the flash.
The bootloader runs first on power-up and checks two pins (P0.4 and P0.5), if the two pins are connected or the payload in flash is corrupt it goes to the bootloader flashing mode, otherwise the payload is started.

RQR24 use a different microcontroller, I'd guess the flashing protocol is probably the same, but I haven't looked at those.