ws2811
gabbapeople/christmas-tree/ws2811
Controls WS2812 based LEDs and LED strings
ws2811
@/ws2811
Controls WS2812 based LEDs and LED strings
DIport
Board port number the ws2811 driver is connected to
SIZEnumber
Number of LEDs on the string
Bnumber
LED brightness value in the range [0,100]
DEV@/ws2811
C++ implementation
#pragma XOD require "https://github.com/adafruit/Adafruit_NeoPixel"
// Include C++ library:
{{#global}}
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
{{/global}}
struct State {
uint8_t mem[sizeof(Adafruit_NeoPixel)];
uint8_t size;
Adafruit_NeoPixel* ws2811;
};
struct Type {
uint8_t size;
Adafruit_NeoPixel* ws2811;
};
{{ GENERATED_CODE }}
void evaluate(Context ctx) {
if (!isSettingUp())
return;
auto state = getState(ctx);
state->size = getValue<input_SIZE>(ctx);
state->ws2811 = new (state->mem) Adafruit_NeoPixel(state->size, getValue<input_DI>(ctx), NEO_GRB + NEO_KHZ800);
state->ws2811->setBrightness(getValue<input_B>(ctx));
state->ws2811->begin();
Type obj = { state->size, state->ws2811 };
emitValue<output_DEV>(ctx, obj);
}