Re: [Gumstix-users] Newbie questions for a gumstix project [extension board, USB host mainly]

[kang <ka...@gm...>]

Hi and thanks for your reply!
I want to go a bit further with my questions:

>
> > - encode ~720p30fps audio&video (TI's H264 codec+AAC)
> Sorry, IIRC TI's DSP codecs for H264 only support up to 480p.
>
I couldn't find proper sources but it's my understanding that it has
encoding support up to 720p with "latest or beta TI's encoders". However I'm
looking for confirmations. if I can't do it I would have to find a different
product (like DM-based leopard maybe, but the bundled cameras seem
troublesome driver-wise [there's no free  (as in beer) complete driver
except for VGA.. otherwise image is raw/unprocessed] and they're
bigger/heavier)
Anyway this one is kind the most important point


>
> > - Possible future extensions of the project using I2C and PWM
> There's no driver for PWM IIRC, you have to write to /dev/mem to use it.
> I2C seems to be supported, though.
>
As long as I find documentation for it it should be ok :) PWM is just a
"maybe" for me as of now, if I get the rest working properly.


> > -Will the board provide enough power for both USB devices? (camera
> > +wifi stick)
>
> I think the camera may run on the OTG port(maybe you'll have to change
> something on the driver to make it use devices with more than 100 mA
> declared current usage), but the wifi stick definitively needs the host
> port.
>

The wifi uses about 500mA max, I'm not sure about the camera but it's
probably a bit above 100mA