Prague meeting: Work on USB debug

[Nico Huber]

Hi folks,

I had first success with my pomona clip, today. Sadly, the mobo does
not have any UART,  so I'll finally have to switch to something more
advanced.  I've a high-speed ftdi usb adapter board that can be used
as USB debug device, but this will need some code changes along with
some refactoring.  I think, I'll focus on that during the hackathon.

It would be nice, to have some more usb debug devices available for
regression testing.

Nico

[Peter Stuge]

Nico Huber wrote:
> I had first success with my pomona clip, today. Sadly, the mobo does
> not have any UART,

What board is it?
> so I'll finally have to switch to something more advanced.

Is LPC available on the board?
> I've a high-speed ftdi usb adapter board that can be used as USB debug device

Are you really sure that the chip meets the requirements on debug devices?

In particular non-standard data packet sizes?

//Peter

[Nico Huber]

On 14. Oktober 2014 01:26:37 MESZ, Peter Stuge  wrote:
> Nico Huber wrote:
> > I had first success with my pomona clip, today. Sadly, the mobo does
> > not have any UART,
>
> What board is it?

A Haswell ThinkPad (T440s).
> > so I'll finally have to switch to something more advanced.
>
> Is LPC available on the board?

I don't think so.
> > I've a high-speed ftdi usb adapter board that can be used as USB
>
> debug device
>
> Are you really sure that the chip meets the requirements on debug
> devices?

No, but I have some POC code working at least with an ICH7 EHCI.
> In particular non-standard data packet sizes?

Some time ago, I played a bit with my ThinkPad T60. Only limitation seemed to be the 8-byte limit of packet payload. With the right configuration packets (setting BAUD, rs232, ...) things just worked.

Nico