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USB Mouse with Scroll Wheel

Yashath Ekambaresha

Dear All,

I want to write a HID Mouse Driver using LPC2148 controller. I re-worked on the example given by Keil HID and was able to detect the board as USB Mouse. This mouse has only three buttons(left, middle and right) and send three bytes of InReport.

I would like to extend this for mouse with scroll wheel.

Do i have to change any descriptors for this? if yes, what and where. What will be the InReport size and Which byte will correspond to the scroll wheel movement..

Thanks...
Yashath

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