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Date: Tue, 03 Feb 2015 07:16:27 +0100
From: Hans Petter Selasky <hps@selasky.org>
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To: james <kqiu.star@gmail.com>, freebsd-arm@freebsd.org
Subject: Re: isochronous transfer porting
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On 02/03/15 07:11, james wrote:
> HI
> I am recently doing a project that needs support usb camera in RTEMS.
> The platform is based on ARMv7, otg controller is EHCI compatible
>
> I am considering porting isochronous transfer in FreeBSD to RTEMS,
> but not familiar with FreeBSD code yet, and I found that
> Sebastian Huber has ported FreeBSD USB stack to RTEMS, but only support
> MMC and usb mass storage now(I have supported usb mass storage host in
> RTEMS).
>
> do you have any suggestions on this project? If porting from FreeBSD,
> which point should
> I start with?Does anyone have done this work before?
> Thanks in advance

Hi,

You should probably update the USB code from FreeBSD 11-current. If mass 
storage is working isochronous transfers should work too. It should work 
more or less the same like before.

--HPS