[Arm-netbook] stm32f072 usb firmware

[Peter Bouda]

>> Any ideas what I could have done wrong?
>   it's not amazingly hard, this, there's not actually a lot to do, so
> the number of things wrong will be very small.
>
>    can you take a picture and make it available online, also compare
> against the photo here:
>   http://rhombus-tech.net/community_ideas/laptop_15in/news/PCB2_prototype_progress_14oct2015/
>
>   btw if you haven't re-flashed the firmware at all, then by default it
> will come up with LD2 blinking happily.  check first that that's what
> happens by returning the U5V jumper and plugging in a mini-usb cable.
>
>   btw you should *NOT* plug in a mini-usb cable at the same time as the
> USB cable across PA12 and PA11!
>
>   also make sure BOOT0 is shorted to E5V *before* pressing reset, then
> hold reset for at least 0.5 seconds, *then* release reset, then
> release BOOT0 screwdriver-short.

hey, I got it finally. I think I made something wrong with the 
screwdriver (noob!), but after some more attempts it worked and I got 
the miniblink working. I will go on with the usb-rewrite stuff now, and 
see how it works.

Peter