// Exercise 2

// while A pressed = blink all LEDs
// while B pressed = oscillate (go back and forth slowly) servo between 30 and 120 degrees
// while C pressed = sequentially single blink each cell in neo ring (purple color)
// while D pressed = double blink back and forth from green, red, blue, amber

// include servo library for the Servo motor
#include <Servo.h>

// include fastLED library for the NeoPixel ring
#include <FastLED.h>

// define pins numerically
int aled = 11; // amber led
int bled = 10; // blue led
int rled = 9; // red led
int gled = 8; // green led

// define buttons numerically
int butd = 6; // yellow/amber button
int butc = 7; // blue button
int butb = 3; // green button
int buta = 2; // red button

//define servo 
int servoPin = 12;
// define servo motor called myservo
Servo myservo;
// variable to store motor's position (in degrees)
int pos = 0;

void setup() // put your setup code here, to run once:
{
  // all pins connected to leds are outputs
  pinMode(aled, OUTPUT);
  pinMode(bled, OUTPUT);
  pinMode(rled, OUTPUT);
  pinMode(gled, OUTPUT);

  // all pins connected to buttons are inputs
  pinMode(butd, INPUT);
  pinMode(butc, INPUT);
  pinMode(butb, INPUT);
  pinMode(buta, INPUT);

  // serial monitor to print stuff
  Serial.begin(9600);

  //attach servo motor to pin 12
  myservo.attach(servoPin);

}

void loop() // put your main code here, to run repeatedly:
{

  // number of cells = 16 (given)
  // NOTE: use #define or const int
  #define neoNumCells 16

  //define NeoPixel for pin it goes into
  // NOTE: use #define or const int
  #define neoData 13

  // CRGB from library
  // defines array with number of cells in ring
  CRGB NeoArray[neoNumCells];

  //fastLED.addLeds from library
  // < NEOPIXEL , data> (array name , number of cells)
  FastLED.addLeds<NEOPIXEL, neoData>(NeoArray, neoNumCells);

  // while A pressed = blink all LEDs

  /*while (digitalRead(buta)) // while pressing red button
  {
    
    digitalWrite(aled, LOW);
    digitalWrite(bled, LOW);
    digitalWrite(rled, LOW);
    digitalWrite(gled, LOW);

    delay(200);

    digitalWrite(aled, HIGH);
    digitalWrite(bled, HIGH);
    digitalWrite(rled, HIGH);
    digitalWrite(gled, HIGH);

    delay(200);
  }*/

  // while B pressed = oscillate (go back and forth slowly) servo between 30 and 120 degrees
  
  /*while (digitalRead(butb)) // while pressing green button
  {
    for (pos = 30; pos <= 120; pos++)
    {
      myservo.write(pos);
      delay(50);
    }

    for (pos = 120; pos >= 30; pos--)
    {
      myservo.write(pos);
      delay(50);
    }
  }*/
  
  // while C pressed = sequentially single blink each cell in neo ring (purple color)
  
  
  // while D pressed = double blink back and forth from green, red, blue, amber

  while (digitalRead(butd))
  {
    for (int pin = 8; pin <= 11; pin++)
    {
      digitalWrite(pin, HIGH);
      delay(200);
      digitalWrite(pin, LOW);
      delay(200);
      digitalWrite(pin, HIGH);
      delay(200);
      digitalWrite(pin, LOW);
      delay(200);
      digitalWrite(pin, HIGH);
      delay(200);
    }
  }

}