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controller_leds(3) Arcan Lua API controller_leds(3) NAME controller_leds - Query or rescan for LED controllers SYNOPSIS [nleds, variable, rgb] or [nctrls, low32, high32] controller_leds( ctrlid ) DESCRIPTION If ctrlid is set, the values for the specified controller are re- turned. The id of a controller can be retrieved as part of the _input event handler on status == "added" events either directly on devkind == "led" or for some other devices through the devref field. _dis- play_state events may also provide a ledctrl,ledind. If ctrlid is not set or set to -1, a rescan will be queued that might generate addi- tional device status events. It also returns the number of active con- trollers and two bitmasks (capped to 64 controllers) EXAMPLE function controller_leds0() local do_ctrl = function(i) local nleds, shift, rgb = controller_leds(i); print("controller", i, "leds:", nleds, "intensity:", intensity and "yes" or "no", "rgb:", rgb and "yes" or "no"); end -- due to the double size restriction, this had to be split local count, first, second = controller_leds(); print("# controllers:", count); for i=0, 31 do if (bit.band(first, bit.lshift(1, i))) then do_ctrl(i); end end for i=0, 31 do if (bit.band(first, bit.lshift(1, i))) then do_ctrl(32, i); end end end iodev April 2025 controller_leds(3)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLE
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