Re: [libusb] Need a simple working libusb code for keyboard input

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

Jian Lu wrote:
> I'm a student working on libusb. I'm using the libusb 0.1, the old 
> version.

There's really no reason to do that at this point.  The newer version is
much better.  However, if you're working with a HID device (keyboard),
you might be happier with libhid.

What operating system are you using?


> I'm trying to get a simple code that I can read the input from 
> a keyboard. I tried to use usb_interrrupt_read(), but I always got an 
> error code of -22 or -16.
> Could you please help me out?

We can't do a thing without seeing your code.  The operating system
automatically loads a driver for HID devices.  Did you disconnect that
before you tried to claim the device?  The -16 error is EBUSY, which
implies that you did not.

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