Re: usb custom class driver not loading:

Subject: Re: usb custom class driver not loading:

From: Olav Andrade <email@hidden>

Date: Tue, 11 Oct 2005 10:19:22 -0700

Delivered-to: email@hidden

Since you're specifically dealing with a printer, this question is better asked on the printing list. Once you get subscribed, could you explain why you need a custom class driver? USB-parallel dongles to printers "just work." In most cases, Mac OS X automatically binds to the relevant driver and creates a queue that you can use for printing.

-olav

Olav Andrade

Apple Printing Engineering

On Oct 10, 2005, at 5:17 AM, Vamsi Krishna wrote:

I am developing a custom class driver for a vendor specific usb to parallel adapter which connects to HP DeskJet 840C printer. I didn't see any relevant information on developing a USB custom class drivers and backends, i went through mailing lists and source code in /Developers/Examples/Printing/Printers/Plugins/USBGenericPrinterClass which helped me a lot.

I developed a custom backend which detects the HP DeskJet 840C printer and prints DeviceID string to stdout as the normal usb backend does.

I also had a codeless kext which has the below info.plist information which tells the OS where the custom class driver is present.

...

I was unable to understand where the problem is . If anyone has any clue of why the custom class driver is not loading please respond.

Thanks

Vamsi

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References:

>usb custom class driver not loading: (From: "Vamsi Krishna" <email@hidden>)