esp32-rgb-led-strip-homespan.ino

// Homespan firmware for ESP32 rgb led strip of NEOPIXEL/WS2812B

#if defined(CONFIG_IDF_TARGET_ESP32)
  #define NEOPIXEL_RGB_PIN       32
#endif
 
#include "HomeSpan.h"
#include "extras/Pixel.h"                       // include the HomeSpan Pixel class

///////////////////////////////

struct NeoPixel_RGB : Service::LightBulb {      // Addressable single-wire RGB LED Strand (e.g. NeoPixel)
 
  Characteristic::On power{0,true};
  Characteristic::Hue H{0,true};
  Characteristic::Saturation S{0,true};
  Characteristic::Brightness V{100,true};
  Pixel *pixel;
  uint8_t nPixels;
  
  NeoPixel_RGB(uint8_t pin, uint8_t nPixels) : Service::LightBulb(){

    V.setRange(5,100,1);                      // sets the range of the Brightness to be from a min of 5%, to a max of 100%, in steps of 1%
    pixel=new Pixel(pin);                     // creates Pixel LED on specified pin
    this->nPixels=nPixels;                    // save number of Pixels in this LED Strand
    update();                                 // manually call update() to set pixel with restored initial values
  }

  boolean update() override {

    int p=power.getNewVal();
    
    float h=H.getNewVal<float>();       // range = [0,360]
    float s=S.getNewVal<float>();       // range = [0,100]
    float v=V.getNewVal<float>();       // range = [0,100]

    Pixel::Color color;

    pixel->set(color.HSV(h*p, s*p, v*p),nPixels);       // sets all nPixels to the same HSV color
          
    return(true);  
  }
};

void setup() {
  
  Serial.begin(115200);
 
  homeSpan.begin(Category::Lighting,"Pixel LEDS" DEVICE_SUFFIX);

  SPAN_ACCESSORY();                                             // create Bridge (note this sketch uses the SPAN_ACCESSORY() macro, introduced in v1.5.1 --- see the HomeSpan API Reference for details on this convenience macro)

  SPAN_ACCESSORY("Neo RGB");
    new NeoPixel_RGB(NEOPIXEL_RGB_PIN,50);                       // create 50-LED NeoPixel RGB Strand with full color control

}

///////////////////////////////

void loop() {
  homeSpan.poll();
}

///////////////////////////////