Re: [Paparazzi-devel] error when uploading code to ppz

[Sergey Krukowski]

Hi Eduardo!

The problem is that for some reason the usb_dfu firmware doesn't work  
proper with all usb chipsets.
I tried once to debug it on one of my laptops with the same problem -  
something goes very wrong in dfu/usb algorithm.
I reported the problem on developers list, but there wasn't any help.
I found the only solution - trying other laptop (or using external usb  
controller on it, for example as ExpressCard).
Looks like guys there, who use F4 controllers, switching to the internal  
bootloader and dfu-util, which should work better.
If you send me a photo of your KroozSD's downside, I'll probably can tell  
you ho to switch to internal bootloader and use dfu-util.

Best Regards,
Sergey

> hello,
> When i try to upload the firmware to krooz board using bootloader i get  
> this error:
>
>
> sometime the upload process finish but the board not initialize.
> Sometime the uoload finished but i get some crazy behaviour in flight.
>
> for now i tried more than 20 times and the process cannot finish.
>
> If i try in my very old laptop it work ok.
>
> when i try in one of my 3 new laptops it fail.
>
> any idea ?
>