USB Joystick HID descriptor

USB PICs and the UBW

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szacpp
Posts: 1
Joined: Sat Nov 14, 2015 9:57 am

USB Joystick HID descriptor

Post by szacpp » Sat Nov 14, 2015 10:03 am

Hi,
I wrote HID descriptor for Joystick, the joystick has 8 axis. I want to know, is this right that Wheel and Dial usage for trim wheel and flap axis. also how do I add 8 buttons into the below code I have many tried for buttons but failed?


0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x09, 0x04, // USAGE (Joystick)
0xa1, 0x01, // COLLECTION (Application)
0x05, 0x02, // USAGE_PAGE (Simulation Controls)
0x09, 0xbb, // USAGE (Throttle)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x01, // USAGE (Pointer)
0xa1, 0x00, // COLLECTION (Physical)
0x09, 0x30, // USAGE (X) for ailerons
0x09, 0x31, // USAGE (Y) for elevator
0x09, 0x32, // USAGE (Z) for rudder
0x09, 0x33, // USAGE (Rx) for spoiler
0x09, 0x34, // USAGE (Ry) for throttle 1
0x09, 0x35, // USAGE (Rz) for throttle 2
0x09, 0x38, // USAGE (Wheel) for trim wheel
0x09, 0x37, // USAGE (Dial) for flap
0x95, 0x08, // REPORT_COUNT (8)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION
0xc0 // END_COLLECTION

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