/*
********** Arduino **********
  * Laboratorio 09: Línea de 8 LEDs RGB 5050 conectado a un Arduino.
 * Autor: Cristian Augusto Restrepo
 * Descripción:
 *   Controlar desde una interfaz en Processing, una línea de 8 LEDs RGB 5050
 *	 conectado a un Arduino. Nota: No alimente los +5V desde el Arduino.
*/

#include<FastLED.h>
#define NUM_LEDS 8
CRGBArray<NUM_LEDS> leds;
char val;

void setup() {
  FastLED.addLeds<NEOPIXEL,6>(leds, NUM_LEDS);
  Serial.begin(9600);
  }
  
void loop(){
  if (Serial.available()) {
    val = Serial.read();
  }
    if (val == 'A') {
      for(int i = 0; i < NUM_LEDS/2; i++) {
        leds.fadeToBlackBy(8);
      leds[7] = CRGB::Yellow;
      leds[6] = CRGB::Yellow;
      leds[5] = CRGB::Yellow;
      leds[4] = CRGB::Yellow;
      leds[3] = CRGB::Blue;
      leds[2] = CRGB::Blue;
      leds[1] = CRGB::Red;
      leds[0] = CRGB::Red;
        FastLED.delay(2); 
      }
    }
    if (val == 'B'){
      static uint8_t hue;
      for(int i = 0; i < NUM_LEDS; i++) {
        leds.fadeToBlackBy(8);
        leds[i] = CHSV(hue++,255,255);
        FastLED.delay(2);
      }
    }
    if (val == 'C'){
      for(int i = 0; i < NUM_LEDS/2; i++) {
        leds.fadeToBlackBy(8);
      leds[0] = CRGB::Blue;
      leds[1] = CRGB::Blue;
      leds[2] = CRGB::Blue;
      leds[3] = CRGB::Blue;
      leds[4] = CRGB::Black;
      leds[5] = CRGB::Black;
      leds[6] = CRGB::Black;
      leds[7] = CRGB::Black;
        FastLED.delay(95); 
      leds[0] = CRGB::Black;
      leds[1] = CRGB::Black;
      leds[2] = CRGB::Black;
      leds[3] = CRGB::Black;
      leds[4] = CRGB::Red;
      leds[5] = CRGB::Red;
      leds[6] = CRGB::Red;
      leds[7] = CRGB::Red;
        FastLED.delay(95);
      leds[0] = CRGB::Blue;
      leds[1] = CRGB::Blue;
      leds[2] = CRGB::Blue;
      leds[3] = CRGB::Blue;
      leds[4] = CRGB::Black;
      leds[5] = CRGB::Black;
      leds[6] = CRGB::Black;
      leds[7] = CRGB::Black;
        FastLED.delay(95);
      leds[0] = CRGB::Black;
      leds[1] = CRGB::Black;
      leds[2] = CRGB::Black;
      leds[3] = CRGB::Black;
      leds[4] = CRGB::Red;
      leds[5] = CRGB::Red;
      leds[6] = CRGB::Red;
      leds[7] = CRGB::Red;
        FastLED.delay(95);
      leds[0] = CRGB::Black;
      leds[1] = CRGB::Black;
      leds[2] = CRGB::Black;
      leds[3] = CRGB::Black;
      leds[4] = CRGB::Black;
      leds[5] = CRGB::Black;
      leds[6] = CRGB::Black;
      leds[7] = CRGB::Black;
        FastLED.delay(25);
      leds[0] = CRGB::WhiteSmoke;
      leds[1] = CRGB::White;
      leds[2] = CRGB::WhiteSmoke;
      leds[3] = CRGB::White;
      leds[4] = CRGB::WhiteSmoke;
      leds[5] = CRGB::White;
      leds[6] = CRGB::WhiteSmoke;
      leds[7] = CRGB::White;
        FastLED.delay(50);
      leds[0] = CRGB::Black;
      leds[1] = CRGB::Black;
      leds[2] = CRGB::Black;
      leds[3] = CRGB::Black;
      leds[4] = CRGB::Black;
      leds[5] = CRGB::Black;
      leds[6] = CRGB::Black;
      leds[7] = CRGB::Black;
        FastLED.delay(25);
      }
    }
    if (val != 'A' && val != 'B' && val != 'C'){
      for(int i = 0; i < NUM_LEDS/2; i++) {
        leds.fadeToBlackBy(8);
        leds[i] = CHSV(val,255,255);
        leds(NUM_LEDS/2,NUM_LEDS-1) = leds(NUM_LEDS/2 - 1 ,0);
        FastLED.delay(2);
      }
    }
    delay(10);
}