Re: [Libusb-devel] error submitting URB: No such file or directory

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

Jeremy Beker wrote:
> I am having a problem that is probably a stupid error on my part.  I  
> am trying to communicate with a smart card reader (I have tested this  
> with two models), and after claiming the interface, whenever I use  
> usb_bulk_write, I get the error "error submitting URB: No such file  
> or directory." 
...
> 									
> 	ret = usb_bulk_write(
> 		devHandle,
> 		interface.bInterfaceNumber,
> 		isTokPres,
> 		len,
> 		5000);
>   

USB data is written to an endpoint number.  You are supplying the
interface number.  The interface number is probably 0, and endpoint 0 is
always the control endpoint, not a bulk endpoint.

-- 
Tim Roberts, ti...@pr...
Providenza & Boekelheide, Inc.