esp32-node/src/led.cpp

//#define FASTLED_ALLOW_INTERRUPTS 0
//#define FASTLED_INTERRUPT_RETRY_COUNT 1
#include <FastLED.h>

#include "led.h"
#include "hardware.h"

using namespace std;

Led::Led(void) {
  index = 0;
  duration = 0;
  wakeupIndex = 0;
}

void Led::loop_rainbow(void) {
  fill_rainbow(leds, NUM_LEDS, index, 14);
}

void Led::loop_confetti(void) 
{
  // random colored speckles that blink in and fade smoothly
  fadeToBlackBy( leds, NUM_LEDS, 10);
  int pos = random16(NUM_LEDS);
  leds[pos] += CHSV( index + random8(64), 200, 255);
}

void Led::loop_sweep(void) {
  // a colored dot sweeping back and forth, with fading trails
  fadeToBlackBy( leds, NUM_LEDS, 20);
  int pos = beatsin16( 13, 0, NUM_LEDS-1 );
  leds[pos] += CHSV( index, 255, 192);
}

void Led::loop_steady(void) {
  fill_solid(leds, NUM_LEDS, color);
}

void Led::loop_off(void) {
  if (wakeupIndex == 0) {
    fill_solid(leds, NUM_LEDS, CRGB::Black);
  } else {
      // Scale the heat value from 0-255 down to 0-240
      // for best results with color palettes.
      //byte colorindex = scale8( heat[j], 240);
    CRGB color = ColorFromPalette(HeatColors_p, wakeupIndex);
    if (wakeupIndex > 240) color = CRGB::White;
    fill_solid(leds, NUM_LEDS, color);
//    fadeToBlackBy( leds, NUM_LEDS, 255-wakeupIndex);
    setBrightness(wakeupIndex);
    if (wakeupIndex < 100) {
      leds[3] = CRGB::Black;
      leds[NUM_LEDS-4] = CRGB::Black;
    }
    if (wakeupIndex < 150) {
      leds[2] = CRGB::Black;
      leds[NUM_LEDS-3] = CRGB::Black;
    }
    if (wakeupIndex < 200) {
      leds[1] = CRGB::Black;
      leds[NUM_LEDS-2] = CRGB::Black;
    }
    if (wakeupIndex < 250) {
      leds[0] = CRGB::Black;
      leds[NUM_LEDS-1] = CRGB::Black;
    }

  }
}

void Led::wakeUpLight(uint8_t i) {
  Serial.printf("wakeuplight(%d)\n", i);
  wakeupIndex = i;
} 

void Led::changeAnimation(uint8_t num, uint16_t duration) {
  if (duration == 0) this->duration = UINT16_MAX;
  else this->duration = duration;
  if      (num == 0) refresh = &Led::loop_steady;
  else if (num == 1) refresh = &Led::loop_sweep;
  else if (num == 2) refresh = &Led::loop_confetti;
  else if (num == 3) refresh = &Led::loop_rainbow;
  else if (num == 255) refresh = &Led::loop_off;
}

bool Led::isOn() {
  if (refresh && refresh != &Led::loop_off && FastLED.getBrightness() != 0) return true;
  else return false;
}

void Led::changeColor(uint8_t r, uint8_t g, uint8_t b) {
  color = CRGB(r, g, b);
}
void Led::setBrightness(uint8_t brightness) {
  if (brightness > 254) { // don't set first byte to 255 on tm1829
    FastLED.setBrightness(254);
  } else {
//    uint8_t b = pow(((double)brightness/255.0), 4.2) * 255.0;
//    FastLED.setBrightness(b);
    FastLED.setBrightness(brightness);
  }
}

void Led::stop(void) {
  runTask = false;
  delay(50);
//  FastLED.clear();
  fill_solid(leds, NUM_LEDS, CRGB::Black);
  FastLED.show();
}

void Led::setup(void) {
  pinMode(LED_PIN, OUTPUT);
  FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.setBrightness(96);
  //FastLED.setMaxPowerInVoltsAndMilliamps(5, 500);
  FastLED.setCorrection(TypicalLEDStrip);
  fill_solid(leds, NUM_LEDS, CRGB::Black);
  color = CRGB::Orange;

  refresh = &Led::loop_off;
  delay(100);
  xTaskCreate(
                    &cTaskWrapper,          /* Task function. */
                    "ledAnimationTask",        /* String with name of task. */
                    1024,            /* Stack size in words. */
                    this,             /* Parameter passed as input of the task */
                    tskIDLE_PRIORITY+3,                /* Priority of the task. */
                    &ledTaskHandle);            /* Task handle. */
}

void Led::animationTask(void* parameters) {
  runTask = true;
  while(runTask) {
    if (refresh != nullptr) {
       (*this.*refresh)();
         FastLED.show();
//       EVERY_N_MILLISECONDS ( 20) { index++; }
       index++;
       if (duration == 0) {
         refresh = &Led::loop_off;
       } else if (duration == UINT16_MAX) {
       } else {
         duration--;
       }
//       EVERY_N_SECONDS(30) {
//         FastLED.clear();
//         delay(200);
//         changeAnimation(2, 2000);
//       }
    }
    vTaskDelay(50 / portTICK_PERIOD_MS);
  }
  Serial.println("LED animation end!");
  vTaskDelete(NULL);
}

void Led::cTaskWrapper(void* parameters) {
  static_cast<Led*>(parameters)->animationTask(NULL);
}