(note that on devfs, this is /dev/input/js)
The
Linux joystick device driver,
developed by the good people at
SuSE. Its
API is pretty
simple. You read from its file to a "
js_event"
struct, which looks like this:
struct js_event {
__u32 time; /* timestamp */
__s16 value; /* position on axis or button value */
__u8 type; /* type of event */
__u8 number; /* axis/button # */
};
The event types are:
- JS_EVENT_INIT
- JS_EVENT_BUTTON
- JS_EVENT_AXIS
Other events can be
OR'd with JS_EVENT_INIT.
See /usr/src/linux/Documentation/joystick-api.txt for more information and ioctl()s. Oh, yes, and all this stuff is defined in <linux/joystick.h>