Is there a list of functions somewhere?

Sam_R · February 23, 2018, 5:25pm

Is there a list of functions somewhere? I read through the documentation on the github repo and saw “leds.fadeToBlackBy(40);” on https://github.com/FastLED/FastLED/wiki/RGBSet-Reference. Where are the other functions listed?

Daniel_Garcia · February 23, 2018, 5:49pm

http://fastled.io/docs/3.1/

Sam_R · February 23, 2018, 7:03pm

@Daniel_Garcia Thanks! I didn’t see a rainbow function. Is there one built in or do I need to write one?

Andrew_Tuline · February 23, 2018, 9:17pm

@Sam_R There’s a whole pile of functions built in there, including Rainbow. Keep on looking. . .

Sam_R · February 23, 2018, 9:21pm

@Andrew_Tuline I’ve been looking in the CRGB module. Which should I be looking in?

Ken_White · February 23, 2018, 10:59pm

@Sam_R - you can find rainbow() in the DemoReel100.ino - line 70 at:

github.com

FastLED/FastLED/blob/master/examples/DemoReel100/DemoReel100.ino

#include <FastLED.h>

FASTLED_USING_NAMESPACE

// FastLED "100-lines-of-code" demo reel, showing just a few 
// of the kinds of animation patterns you can quickly and easily 
// compose using FastLED.  
//
// This example also shows one easy way to define multiple 
// animations patterns and have them automatically rotate.
//
// -Mark Kriegsman, December 2014

#if defined(FASTLED_VERSION) && (FASTLED_VERSION < 3001000)
#warning "Requires FastLED 3.1 or later; check github for latest code."
#endif

#define DATA_PIN    3
//#define CLK_PIN   4
#define LED_TYPE    WS2811

This file has been truncated. show original

The key FastLED function in rainbow() is line 73 -
fill_rainbow( ) and see line 36 at:

https://github.com/FastLED/FastLED/blob/master/colorutils.cpp

to find out more about this FastLED function.

When I am trying to find out more about a FastLED function, I google the word FastLED along with the function name. One of the first couple of webpages usually is a reference to the function in the FastLED code and you can get some other useful information, too.

Also, do not forget to use the Search Community box on the left side of this webpage. The Search Community box can be very helpful.

Finally, if you see the word "void " in front of a function name in a sketch that usually means that the sketch author created that new function using FastLED functions .