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Can AVR-USB register composite device. two HID, key/mouse?

Posted: Sat Sep 22, 2007 5:22 am
by maxin
I have a project where I need to send keyboard and mouse events. Can AVR-USB register itself with Windows XP as two HID devices (a mouse and a keyboard)? Thanks. I'm looking towards commercial usage and this is perfect provided it can do this trick. -max

Posted: Tue Sep 25, 2007 10:00 am
by christian
Yes, that is possible with a composite HID descriptor. Getting the descriptor right is not always easy, especially with little experience in HID design.

I would recommend that you borrow a USB keyboard with integrated trackball and run a diagnostic tool on it which prints the HID descriptor. This would be a good starting point.

Posted: Sun Feb 17, 2008 6:46 pm
by STB
Take a look at my posting here: