Ntf led override with scripting

jaca · August 17, 2022, 3:23pm

Hello,
I’m currently working on controlling a neopixel led strip through an AP_Periph device. I got it to light up as an ntf led, and I was wondering if there is a way to control ntf leds from a script. I know that in NTF_LED_OVERRIDE there is a possibility to override ntfs with scripting but I couldn’t find any lua functions or examples of this.

jaca · August 25, 2022, 8:42am

Update: I managed to get it to work with notify:handle_rgb(red, green, blue, rate_hz) with rate_hz=0 for continuous light. I’m still wondering how to use notify:handle_rgb_id. If anyone could find the time to point me to some materials or explain it here I would be very grateful.

jaca · September 2, 2022, 8:57am

The intended use is to have one periph device per wing so I need to controll the strips independently of eachother so they can show the proper navigational lights. I’m searching for a way to access peripheral pins from a script on FC. If anyone knows how peripheral pins are addressed in scripting, or if there is a function similar to SRV:find_channel but for AP_Periph it would be appreciated if you shared.

Yuri_Rage · September 2, 2022, 6:01pm

Addressable LEDs (like WS2811) seem like a better solution for you. See this example:

github.com

ArduPilot/ardupilot/blob/master/libraries/AP_Scripting/examples/LED_poslight.lua

--[[
 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")

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