Writing Windows WDM Device Drivers

Usage Page (Generic Desktop) HID_USAGE_PAGE_GENERIC 05 01 Usage (Keyboard) HID_USAGE_GENERIC_KEYBOARD 09 06 Collection (Application) A1 01 'Keyboard' Usage Page (Key Codes) HID_USAGE_PAGE_KEYBOARD 05 07 Usage Minimum left control key HID_USAGE_KEYBOARD_LCTRL 19 E0 Usage Maximum right GUI key HID_USAGE_KEYBOARD_RGUI 29 E7 Logical Minimum 0 15 00 Logical Maximum 1 25 01 Report Size 1 95 01 Report Count 8 75 08 Input (Data, Variable, Absolute) 81 02 Modifier key bits Input (Constant) 81 01 Reserved byte Usage Page (LEDs) HID_USAGE_PAGE_LED 05 08 Report Count 5 95 05 Usage Minimum