Any USB guru around ?
Posted: Tue May 31, 2005 7:20 pm
Looking for someone who worked w/ USB HID report descriptors before. And yes, I know about usb.org 
). While skimming over "HID Usage Tables" I stumbled over a rather strange control device description:Whatdoyouknow -- I always wondered how you would control a magic carpet. Turns out it's standardized.HID Usage Tables, Version 1.12, pg. 43 wrote:5.7 Miscellaneous Simulation Devices
Magic Carpet Simulation Device
CA รข?? Allows a device to be generally classified as one that uses the standard control of a magic carpet. This control is a bar, grasped by both hands, that controls the Yaw, Pitch and Roll of the carpet.
The bar, at which the pilot sits, may be pushed forward or pulled back to cause the carpet to dive or rise, respectively. In the zero position, the carpet is in level flight. Pushing forward on the bar causes the carpet to nose down and generates negative values. Pulling back on the bar causes the carpet to nose up and generates positive values.
Turning the bar turns the carpet. In the zero position, the carpet travels straight ahead. Pulling back on the right side turns the carpet to the right and generates positive values. Pulling back on the left side turns the carpet to the left and generates negative values.
Rotating the bar rolls the carpet. In the zero position, the carpet travels level. Rotating the bar in a clockwise direction rolls the carpet to the right and generates positive values. Rotating the bar in the counterclockwise direction rolls the carpet to the left and generates negative values.
