Hi there, during a discussion of a Retropi issue [1] a question about the Linux kernel gamepad spec compared to the actual gamepad drivers came up. The spec says in [2]: > "ABS trigger values start at 0, > pressure is reported as positive values." The kernel drivers for the XBox 360 gamepad, for the Sony Sixaxis PS3 gamepads and other drivers based on their example (like the BigBen gamepad) however return trigger axis values with a value range that... - starts at -32767 (trigger resting position) and - goes up to +32767 (full pressure on the trigger) - with 0 being the middle position (half pressure) Please clarify, is the spec wrong or are the drivers in violation of it? If they are in violation, which should be changed, the spec or the drivers' behavior? Thank you, Hanno [1] https://github.com/RetroPie/EmulationStation/issues/568 [2] https://www.kernel.org/doc/html/v5.2/input/gamepad.html
