Re: [Libusb-win32-devel] Bulk USB transfers works with USB3.0 ports and not with USB2.0

[Xiaofan C. <xia...@gm...>]

On Tue, Sep 30, 2014 at 4:02 PM, Aymen JEBALI <jeb...@gm...> wrote:
> Thanks for your help Xiofan,
>
> The problem is due to the fact that the isolator supports only Full speed
> USB transactions.
> But the SAM3U is high speed. The SAM3U can switch to full speed.
>
> Now the problem I think is with the SAM3U firmware and USB descriptor
> configuration.
>
> The problem was with the Full speed configuration of the USB descriptor.
> I was using 512 as a maximum bulk transfer size.
> Problem disappear when setting this value to 64.
>

Glad that you resolved the issue and thanks for reporting back.



-- 
Xiaofan