/*
 Week 7 assignement Holloboard by Joris
*/
#include <Adafruit_NeoPixel.h> 

// Define
#define NUM_LEDS 3
#define DATA_PIN 6
#define BTN_PIN 10
#define BTN_DELAY 250

// Init Vars
uint8_t j = 0;
unsigned long mark;

// neopixel
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, DATA_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
    pinMode(BTN_PIN, INPUT);     
    strip.begin();
    strip.show(); // Initialize all pixels to 'off'
    
    strip.setPixelColor(0, 255, 0, 0);
}

void loop() {
    // if button pressed
    chkBtn(digitalRead(BTN_PIN));
    strip.setPixelColor(0, 255, 0, 0);
    strip.setPixelColor(1, 0, 255, 0);
    strip.setPixelColor(2, 0, 0, 255);
    delay(1000);
}

boolean chkBtn(int buttonState) {
   if (buttonState == HIGH && (millis() - mark) > BTN_DELAY) {
       j = 0;
       mark = millis();
       return true;
    } 
    else { return false; }
}