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WS2812 Module

Since	Origin / Contributor	Maintainer	Source
2015-02-05	Till Klocke	Till Klocke	ws2812.c

ws2812.write()

Send GRB data in 8 bits to a WS2812 chain.

Syntax

ws2812.writegrb(pin, string)

Parameters

pin any GPIO pin 0, 1, 2, ...
string payload to be sent to one or more WS2812 LEDs. It should be composed from a GRB triplet per element.
- G1 the first pixel's Green channel (0-255)
- R1 the first pixel's Red channel (0-255)
- B1 the first pixel's Blue channel (0-255)
  ... You can connect a lot of WS2812 ...
- G2, R2, B2 are the next WS2812's Green, Red, and Blue channel parameters

Returns

nil

g = 0
r = 255
b = 0
leds_grb = string.char(g,r,b, g,r,b) 
ws2812.write(2, leds_grb) -- turn two WS2812Bs to red, connected to pin 2

ws2812.writergb()

Send GRB data in 8bits to a WS2812 chain.

Syntax

ws2812.writergb(pin, string)

Parameters

pin any GPIO pin 0, 1, 2, ...
string payload to be sent to one or more WS2812 LEDs. It should be composed from an RGB triplet per element.
- R1 the first pixel's Red channel (0-255)
- G1 the first pixel's Green channel (0-255)
- B1 the first pixel's Blue channel (0-255)
  ... You can connect a lot of WS2812 ...
- R2, G2, B2 are the next WS2812's Red, Green, and Blue channel parameters

Returns

nil

Example

leds_rgb = string.char(255,0,0, 0,255,0, 0,0,255) 
ws2812.writergb(2, leds_rgb) -- turn three WS2812Bs to red, green, and blue respectively