ardupilot/libraries/AP_Scripting/examples/LED_poslight.lua

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--[[
Script to use LED strips as position lights.
For this script we will use two strips with up to 8 LEDs each.
--]]
local num_leds = 8
local timer = 0
-- Brightness for green or red light.
local br_color = 255
-- Brightness for flash light when armed.
local br_flash = 255
--[[
Use SERVOn_FUNCTION 94 for left LED strip
Use SERVOn_FUNCTION 95 for right LED strip
--]]
local chan_left = assert(SRV_Channels:find_channel(94),"LEDs left: channel not set")
local chan_right = assert(SRV_Channels:find_channel(95),"LEDs right: channel not set")
-- find_channel returns 0 to 15, convert to 1 to 16
chan_left = chan_left + 1
chan_right = chan_right + 1
gcs:send_text(6, "LEDs strip left: chan=" .. tostring(chan_left))
gcs:send_text(6, "LEDs strip right: chan=" .. tostring(chan_right))
-- initialisation code
assert(serialLED:set_num_neopixel(chan_left, num_leds),"Failed left LED setup")
assert(serialLED:set_num_neopixel(chan_right, num_leds),"Failed right LED setup")
--assert(serialLED:set_num_profiled(chan_left, num_leds),"Failed left LED setup")
--assert(serialLED:set_num_profiled(chan_right, num_leds),"Failed right LED setup")
function update_LEDs()
if arming:is_armed() then
if (timer == 0) then
serialLED:set_RGB(chan_left, -1, br_flash, br_flash, br_flash)
serialLED:set_RGB(chan_right, -1, br_flash, br_flash, br_flash)
elseif (timer == 1) then
serialLED:set_RGB(chan_left, -1, br_color, 0, 0)
serialLED:set_RGB(chan_right, -1, 0, br_color, 0)
elseif (timer == 2) then
serialLED:set_RGB(chan_left, -1, br_flash, br_flash, br_flash)
serialLED:set_RGB(chan_right, -1, br_flash, br_flash, br_flash)
elseif (timer == 3) then
serialLED:set_RGB(chan_left, -1, br_color, 0, 0)
serialLED:set_RGB(chan_right, -1, 0, br_color, 0)
end
timer = timer + 1
if (timer > 10) then
timer = 0
end
else
serialLED:set_RGB(chan_left, -1, br_color, 0, 0)
serialLED:set_RGB(chan_right, -1, 0, br_color, 0)
timer = 0
end
serialLED:send(chan_left)
serialLED:send(chan_right)
return update_LEDs, 100 -- run at 10Hz
end
return update_LEDs()