Re: [libusb] Endpoint 0x81 Not Responding

[Phani K. <pha...@gm...>]

Hi

After debugging using USB analyzer, came to know its toggle endpoint issue.
However facing another issue because of toggle.
Kindly help.

My application has :

write to endpoint 2
read from endpoint 81

First time it works successfully. If I run the application second time, it
fails again.

Do I need to do reset the toggle bit after every transfer? Kindly help

Regards
Venkat

On Thu, Mar 10, 2016 at 7:57 PM, Phani Kumar <pha...@gm...> wrote:

> Hi All
>
> I am facing an issue on big endian platform and the details are given
> below:
>
> There is a device with vendor specific command structure. I  send a
> command on OUT endpoint (endpoint number 2) using libusb_bulk_transfer and
> read the output by placing buffer on IN endpoint(Endpoint number 0x81).
>
> The OUT endpoint always responds and IN endpoint does not respond. My
> command times out and it calls abort. For the IN endpoint, I am not getting
> interrupt from the device.
>
> The command structure has all unsigned char fields with one integer field.
> I made sure I did byte swapping for the integer field to make it endianness
> compatible.
>
> The same code perfectly works in windows.
>
> May I know if anybody knows any solution for this or am I missing
> something?
>
> Regards
> Venkat
>