Re: [libusb] libusb Asynchronous Bulk Transfer Timeout On Linux Ubuntu

[Tim R. <ti...@pr...>]

On Sep 12, 2017, at 12:36 PM, Ian Murtaugh <ian...@gm...> wrote:
> 
> I am using libusb on Ubuntu and am attempting to send 4 bytes of data via an asynchronous bulk transfer. I am able to successfully perform the following steps:
> ...
> What does a URB status of -2 mean?

Timeout.  Exactly what kind of device is this?  Are you absolutely sure you're talking to a bulk pipe, and that your bulk pipe is ready to accept new data?  A device is not required to accept whatever you send it.

Tim