Re: Sending generic USB messages?

Subject: Re: Sending generic USB messages?

From: Garth Cummings <email@hidden>

Date: Tue, 2 Aug 2005 15:11:10 -0700

Delivered-to: email@hidden

Hi Peter,

On Aug 2, 2005, at 7:29 AM, Peter Seebach wrote:

I have a device which shows up as a generic HID, but where the actual
protocol defined is just to poll it with queries and get responses.

None of the IOHidDeviceInterface functions seem to offer a way to
just send requests to and from the device. I don't need to monitor queues,
or extract x and y values; none of those are applicable. Is the HID driver
even going to allow this? If not, how do I prevent the OS from attaching
the HID driver?

There's also a USB mailing list where the USB and HID folks hang out <http://lists.apple.com/usb>.

While it's true that other OSes treat HID as a generic USB byte stream, this behavior isn't provided for in the USB specification. Apple tries to stick pretty close to the USB spec.

I'm pretty sure the answer to your question about preventing the HID driver from attaching has been answered in the USB list archives.

-s

--gc

__________________________________________________________________

Garth Cummings

Apple Developer Technical Support email@hidden

http://developer.apple.com/technicalsupport

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Re: Sending generic USB messages?
- From: email@hidden (Peter Seebach)

References:

>Sending generic USB messages? (From: email@hidden (Peter Seebach))