// Program
#include <LiquidCrystal.h> //Dołączenie bilbioteki
LiquidCrystal lcd(2, 3, 4, 5, 6, 7); //Informacja o podłączeniu nowego wyświetlacza

#define BTN_PIN A0

#define BTN1    1023
#define BTN2    911
#define BTN3    797
#define BTN4    683
#define BTN5    572
#define BTN6    461
#define BTN7    333
#define BTN8    222

int latchPin = 8;
//Pin connected to SH_CP of 74HC595
int clockPin = 12;
////Pin connected to DS of 74HC595
int dataPin = 11;

//holder for infromation you're going to pass to shifting function
byte data = 0;

bool isAnalogBtnPressed(int analogVal, int btnValue) {
  return abs(btnValue - analogVal) <= 20;
}


int odczytanaWartosc = 0;

void setup() {
  pinMode(BTN_PIN, INPUT);
  Serial.begin(9600);
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
    lcd.begin(16, 2); //Deklaracja typu


}

void loop() {
  int btnData = analogRead(BTN_PIN);
  if(isAnalogBtnPressed(btnData, BTN1)) {
    Serial.println("Wcisnieto przycisk 1");
      lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto  1"); //Wyświetlenie tekstu
    lightShiftPinA(0);
    delay(1000);
  } else if(isAnalogBtnPressed(btnData, BTN2)) {
    Serial.println("Wcisnieto przycisk 2");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto  2"); //Wyświetlenie tekstu
    lightShiftPinA(1);
    delay(1000);
  }  else if(isAnalogBtnPressed(btnData, BTN3)) {
    Serial.println("Wcisnieto przycisk 3");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto  3"); //Wyświetlenie tekstu
    lightShiftPinA(2);
    delay(1000);
  }  else if(isAnalogBtnPressed(btnData, BTN4)) {
    Serial.println("Wcisnieto przycisk 4");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto 4"); //Wyświetlenie tekstu
    lightShiftPinA(3);
    delay(1000);
  }
  else if(isAnalogBtnPressed(btnData, BTN5)) {
    Serial.println("Wcisnieto przycisk 5");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto  5"); //Wyświetlenie tekstu
    lightShiftPinA(4);
    delay(1000);
  }  else if(isAnalogBtnPressed(btnData, BTN6)) {
    Serial.println("Wcisnieto przycisk 6");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto  6"); //Wyświetlenie tekstu
    lightShiftPinA(5);
    delay(1000);
  }  else if(isAnalogBtnPressed(btnData, BTN7)) {
    Serial.println("Wcisnieto przycisk 7");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto 7"); //Wyświetlenie tekstu
    lightShiftPinA(6);
    delay(1000);
  }
  else if(isAnalogBtnPressed(btnData, BTN8)) {
    Serial.println("Wcisnieto przycisk 8");
     lcd.setCursor(0, 0); //Ustawienie kursora
  lcd.print("Wcisnieto  8"); //Wyświetlenie tekstu
    lightShiftPinA(7);
    delay(1000);
  }
  delay(100);
}






//This function uses bitwise math to move the pins up
void lightShiftPinA(int p) {
  //defines a local variable
  int pin;

  //this is line uses a bitwise operator
  //shifting a bit left using << is the same
  //as multiplying the decimal number by two.
  pin = 1<< p;

  //ground latchPin and hold low for as long as you are transmitting
  digitalWrite(latchPin, LOW);
  //move 'em out
  shiftOut(dataPin, clockPin, MSBFIRST, pin);
  //return the latch pin high to signal chip that it
  //no longer needs to listen for information
  digitalWrite(latchPin, HIGH);

}

//This function uses that fact that each bit in a byte
//is 2 times greater than the one before it to
//shift the bits higher
void lightShiftPinB(int p) {
  //defines a local variable
  int pin;

  //start with the pin = 1 so that if 0 is passed to this
  //function pin 0 will light.
  pin = 1;

  for (int x = 0; x < p; x++) {
    pin = pin * 2;
  }

  //ground latchPin and hold low for as long as you are transmitting
  digitalWrite(latchPin, LOW);
  //move 'em out
  shiftOut(dataPin, clockPin, MSBFIRST, pin);
  //return the latch pin high to signal chip that it
  //no longer needs to listen for information
  digitalWrite(latchPin, HIGH);

}

//blinks the whole register based on the number of times you want to
//blink "n" and the pause between them "d"
//starts with a moment of darkness to make sure the first blink
//has its full visual effect.
void blinkAll(int n, int d) {
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, 0);
  digitalWrite(latchPin, HIGH);
  delay(200);
  for (int x = 0; x < n; x++) {
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, MSBFIRST, 255);
    digitalWrite(latchPin, HIGH);
    delay(d);
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, MSBFIRST, 0);
    digitalWrite(latchPin, HIGH);
    delay(d);
  }
}