#include "PinChangeInterrupt.h"
#include <Adafruit_NeoPixel.h>

// constants won't change. They're used here to
// set pin numbers:

int wait = 20;


const int ledPin = 6;     // the number of the neopixel strip
const int numLeds = 37;

int jasnosc = 50;
bool tryb;

//Adafruit_NeoPixel pixels = Adafruit_NeoPixel(8, ledPin);
Adafruit_NeoPixel strip = Adafruit_NeoPixel(numLeds, ledPin, NEO_GRB + NEO_KHZ800);

#define gora 12
#define menu 11
#define dol 10



void setup() {
  Serial.begin(9600);
  pinMode(12, INPUT_PULLUP); //gora
  pinMode(11, INPUT_PULLUP); //menu
  pinMode(10, INPUT_PULLUP); //dol
  strip.begin();
  strip.setBrightness(50);

  attachPCINT(digitalPinToPCINT(gora), goraf, FALLING);
  attachPCINT(digitalPinToPCINT(menu), menuf, FALLING);
  attachPCINT(digitalPinToPCINT(dol), dolf, FALLING);

}

void goraf(){
if(jasnosc<250){
 jasnosc=jasnosc+10;
  }
  Serial.print("gora   ");
  strip.setBrightness(jasnosc);
  Serial.println(jasnosc, DEC);
}

void menuf(){
  Serial.println("menu");
  Serial.print(tryb);
  tryb = !tryb;
  wait = 0;

}

void dolf(){
if(jasnosc>0){
 jasnosc=jasnosc-10;
  }
    Serial.print("dol   ");
    strip.setBrightness(jasnosc);
  Serial.println(jasnosc, DEC);
}

uint32_t Wheel(byte WheelPos) {
  if(WheelPos < 85) {
    return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
  }
  else if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  else {
    WheelPos -= 170;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
}




void loop() {

if(tryb){
  strip.setBrightness(jasnosc);
  Serial.println("tryb rgb");
  wait = 20;
  rainbow();

}

else
{
   int i;
  for(i=0; i < numLeds; i++ ) {
    strip.setBrightness(jasnosc);
      strip.setPixelColor(i,255,255,255);

    }
    strip.show();

}

strip.show();
}

void rainbow() {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i++) {
      strip.setBrightness(jasnosc);
      strip.setPixelColor(i, Wheel((i*1+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}


// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.