Kaleidoscope/led_control.cpp

#include <Arduino.h>
#include "led_control.h"
cRGB value;
WS2812 LED(LED_COUNT);

#define USE_HSV

int led_mode;
int last_led_mode;
int pos = 0;
cRGB led_off;




cRGB led_steady;
cRGB led_blue;
cRGB led_dark_blue;


cRGB led_breathe;

// Begin RGB Stuff
cRGB rainbow;
int rainbow_hue = 0;   //stores 0 to 614
byte rainbow_steps = 1; //number of hues we skip in a 360 range per update

byte rainbow_saturation = 255;
byte rainbow_value = 190;

long rainbow_ticks = 5; //delays between update
long rainbow_current_ticks =0;
int breathe_brightness = 0;    // how bright the LED is
int breathe_fadeAmount = 1;    // how many points to fade the LED by

int chase_pixels = 1;
int chase_threshold = 6;
int current_chase_counter = 0;

// End RGB stuff

void setup_leds() {
  led_off.r = 0;
  led_off.g = 0;
  led_off.b = 0;
  led_steady.r = 0;
  led_steady.g = 255;
  led_steady.b = 0;
  led_blue.r = 0;
  led_blue.g = 0;
  led_blue.b = 255;

  led_dark_blue.r = 0;
  led_dark_blue.g = 0;
  led_dark_blue.b = 127;




  LED.setOutput(LED_DATA_PIN);
  LED.setColorOrderGRB();  // Uncomment for RGB color order
  led_mode = LED_MODE_RAINBOW;
}

byte key_to_led(byte row, byte col) {
  return key_led_map[row][col];
}

void set_key_color(byte row, byte col, cRGB color) {
  LED.set_crgb_at(key_to_led(row, col), color);
}

cRGB get_key_color(byte row, byte col) {
  return LED.get_crgb_at(key_to_led(row, col));
}



void initialize_led_mode(int mode) {
  set_all_leds_to(led_off);
  if (mode == LED_MODE_OFF) {
    //        set_all_leds_to(led_off);
  } else if (mode == LED_MODE_HEATMAP) {
  } else if (mode == LED_MODE_BREATHE) {

  } else if (mode == LED_MODE_RAINBOW) {
  } else if (mode == LED_MODE_CHASE) {
  } else if (mode == LED_MODE_STEADY) {
    set_all_leds_to(led_steady);
  }
}

void set_all_leds_to(cRGB color) {
  for (int i = 0; i < LED_COUNT; i++) {
    LED.set_crgb_at(i, color);
  }

}


void next_led_mode() {
  led_mode++;
  if (led_mode >= LED_MODES) {
    led_mode = 0;
  }
}

void set_led_mode(int mode) {
  led_mode = mode;

}




void update_leds() {
  if (led_mode != last_led_mode) {
    initialize_led_mode(led_mode);
  }
  if (led_mode == LED_MODE_OFF) {
  } else if (led_mode == LED_MODE_HEATMAP) {
  } else if (led_mode == LED_MODE_BREATHE) {
    led_effect_breathe_update();



  } else if (led_mode == LED_MODE_RAINBOW) {


    led_effect_rainbow_update();



  } else if (led_mode == LED_MODE_CHASE) {

    led_effect_chase_update();


  } else if (led_mode == LED_MODE_STEADY) {
    led_effect_steady_update();
    
  
  }

  last_led_mode = led_mode;
}



  void led_effect_steady_update() {
    LED.sync();
    }


void led_effect_breathe_update() {
  // algorithm from http://sean.voisen.org/blog/2011/10/breathing-led-with-arduino/
  breathe_brightness =  (exp(sin(millis()/2000.0*PI)) - 0.36787944)*108.0;
  // change the brightness for next time through the loop:
  //breathe_brightness = breathe_brightness + breathe_fadeAmount;

  // reverse the direction of the fading at the ends of the fade:
  if (breathe_brightness == 0 || breathe_brightness == 150) {
    breathe_fadeAmount = -breathe_fadeAmount ;
  }



  led_breathe.r = breathe_brightness * 0;
  led_breathe.g = breathe_brightness *0.5;
  led_breathe.b = breathe_brightness * 0;
  set_all_leds_to(led_breathe);
  LED.sync();
}

void 
led_effect_chase_update() {
  if (current_chase_counter++ < chase_threshold) {
    return;
  }
  current_chase_counter = 0;
  LED.set_crgb_at(pos - chase_pixels, led_off);
  LED.set_crgb_at(pos, led_dark_blue);

  pos += chase_pixels;
  if (pos > LED_COUNT || pos < 0) {
    chase_pixels = -chase_pixels;
    pos += chase_pixels;

  }
  LED.set_crgb_at(pos, led_blue);
  LED.sync();
}







void led_effect_rainbow_update() {
  
  
  if (rainbow_current_ticks++ < rainbow_ticks) {
     return; 
  } else { rainbow_current_ticks = 0; }

  rainbow.SetHSV(rainbow_hue, rainbow_saturation, rainbow_value);

  rainbow_hue += rainbow_steps;
  if (rainbow_hue > 360)          {
    rainbow_hue %= 360;
  }
  set_all_leds_to(rainbow);
  LED.sync();
}