USB mode on the F7 and F12E?

Seems like USB mode on those two Tx's is there, but completely unusable. It's not a recognized disk, so all you can do is format it (or copy bits on a Unix system, FWIW). But formatting it will destroy the file system and ruin your installation.

Seems like we need a HAS_USB in target defs that can be turned off to disable the USB mode on those transmitters. This would be a real win on the F7E which has the same mcu as the 7E.

i've added it to the project page. But if someone is working on these tx's, that would be a good thing to do.

For the new devoF12e code that I have been working on I used the following

#ifndef USE_DEVOFS
//use Petit FatFs

//end Petit FatFS
#else
//use DevoFS - small SPI memory

//end DevoFS
#endif

I wrote code to block the USB modes based on this and will start checking it in soon.