esp-pixelprojektor/pixelprojektor/pixelprojektor.ino

#include <Homie.h>
#include <Adafruit_NeoPixel.h>
#include <ArduinoOTA.h>
#include "NeoPatterns.h"
#ifdef __AVR__
#include <avr/power.h>
#endif

#define PIN 2  //data pin for ws2812 (pixelprojektor @ ctdo: PIN 2)
#define NUMPIXELS 64

NeoPatterns strip = NeoPatterns(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800, &StripComplete);

bool stopAfterCompletion;

void StripComplete() {
  if (stopAfterCompletion)
  {
    strip.IconComplete();
  }
  return;
}

HomieNode homieNode("pixel", "commands");


bool onSetColor(const HomieRange& range, const String& value) {
  if (!range.isRange || range.index < 0 || range.index > 1) {
    return false;
  }
  switch (range.index) {
    case 0:
      strip.SetColor1(value.toInt());
      break;
    case 1:
      strip.SetColor2(value.toInt());
      break;
  }
  homieNode.setProperty("color_" + String(range.index)).send(value);
}

bool onSetPixel(const HomieRange& range, const String& value) {
  if (!range.isRange) {
    strip.None();
    strip.ColorSet(value.toInt());
    homieNode.setProperty("pixel").send(value);
    return true;
  }
  if (range.index < 0 || range.index > strip.numPixels() - 1) {
    return false;
  }
  strip.None();
  strip.setPixelColor(range.index, value.toInt());
  strip.show();
  homieNode.setProperty("pixel_" + String(range.index)).send(value);
}

bool onSetBrightness(const HomieRange& range, const String& value) {
  long brightness = value.toInt();
  if (brightness < 0 || brightness > 255) {
    return false;
  }
  strip.setBrightness(brightness);
  strip.show();
  homieNode.setProperty("brightness").send(value);
}

bool onSetEffect(const HomieRange& range, const String& value) {
  stopAfterCompletion = false;
  String effect = value;
  effect.toLowerCase();
  if (effect == "scanner") {
    strip.Scanner(strip.Color(255, 0, 0));
  }
  else if (effect == "randomscanner") {
    strip.Scanner(strip.Color(255, 0, 0), 40, true);
  }
  else if (effect == "larsonspiral") {
    strip.Scanner(strip.Color(255, 0, 0), 40, true, true);
  }
  else if (effect == "rainbowcycle") {
    strip.RainbowCycle(50);
  }
  else if (effect == "theaterchase" || effect == "chase") {
    strip.TheaterChase(strip.Color(255, 0, 0), strip.Color(0, 0, 255), 100);
  }
  else if (effect == "fade") {
    strip.Fade(strip.Color(255, 0, 0), strip.Color(0, 0, 255), 200, 100);
  }
  else if (effect == "randomfade") {
    strip.RandomFade();
  }
  else if (effect == "random") {
    strip.Random();
  }  else if (effect == "smooth") { //example: smooth|[wheelspeed]|[smoothing]|[strength]     wheelspeed=1-255, smoothing=0-100, strength=1-255
    strip.Smooth(16, 80, 50, 40);
  }
  else {
    // Test whether command with parameters was sent
    int sep = value.indexOf("|");
    String command = value.substring(0, sep);
    String parameters = value.substring(sep + 1);
    if (command.equals("fill")) {
      strip.ColorSetParameters(parameters);
    }
    else if (command.equals("randomfade")) {
      int sepparam = parameters.indexOf("|");
      int p1 = parameters.substring(0, sepparam).toInt();
      if (p1 <= 0) {
        p1 = 5;
      }
      strip.RandomFadeSingle(p1);
    }
    else {
      strip.None();
    }
  }
  homieNode.setProperty("effect").send(value);
}

bool onSetIcon(const HomieRange& range, const String& value) {
  stopAfterCompletion = true;
  String _iconname = value;
  if (value[0] == '#') { //color given
    strip.Icon(value.substring(7)[0], value.substring(0, 6));
  }
  else {
    strip.Icon(value[0]);
  }
  homieNode.setProperty("icon").send(value);
}

bool onSetClear(const HomieRange& range, const String& value) {
  strip.None();
  strip.clear();
  strip.show();
  homieNode.setProperty("clear").send(value);
}

bool onSetLength(const HomieRange& range, const String& value) {
  strip.None();
  strip.clear();
  strip.show();
  int newLength = value.toInt();
  if (newLength > 0) {
    strip.updateLength(newLength);
  }
  homieNode.setProperty("length").send(value);
}

void loopHandler() {
  strip.Update();
}

void setup() {
  Serial.begin(115200);

  Homie_setFirmware("pixelprojektor", "1.0.0");
  Homie.setLoopFunction(loopHandler);

  homieNode.advertiseRange("pixel", 0, NUMPIXELS - 1).settable(onSetPixel);
  homieNode.advertiseRange("color", 0, 1).settable(onSetColor);
  homieNode.advertise("brightness").settable(onSetBrightness);
  homieNode.advertise("effect").settable(onSetEffect);
  homieNode.advertise("clear").settable(onSetClear);
  homieNode.advertise("length").settable(onSetLength);
  homieNode.advertise("icon").settable(onSetIcon);

  Homie.setup();

  strip.begin();
  strip.clear();
  strip.setBrightness(64);
  strip.show();
  stopAfterCompletion = false; // Default

  ArduinoOTA.setHostname("pixelprojektor");
  ArduinoOTA.onStart([]() {
    strip.clear();
    strip.setBrightness(64);
  });
  ArduinoOTA.onEnd([]() {
    strip.clear();
  });
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    strip.setPixelColor(progress / (total / NUMPIXELS), strip.Color(100, 0, 0));
    strip.show();
  });
  ArduinoOTA.begin();
}

void loop() {
  Homie.loop();
  ArduinoOTA.handle();
}


/************  Old stuff  ************/
/*
   bool pixelsHandler(const HomieRange& range, const String& value) {

  String remaining = value;
  int i = 0;
  effect = EFFECT_NONE;
  do {
    String current = remaining.substring(0, 7);
    Homie.getLogger() << i << ":" << current << endl;
    uint32_t currentcolor = parseColor(current);

    strip.setPixelColor(i, currentcolor);
    i++;

    remaining = remaining.substring(7);

  } while (remaining.length() > 2 && (i < strip.numPixels()));
  Homie.getLogger() << "  filling rest with black" << endl;
  while (i < strip.numPixels()) {
    strip.setPixelColor(numToPos(i), strip.Color(0, 0, 0));
    i++;
  }

  strip.show();

  return true;
  }
*/