#include <LiquidCrystal.h>

// LCD display pins
LiquidCrystal lcd(2, 3, 4, 5, 6, 7);

// variables
long impulses, time, previous, tripTime;
unsigned long previousImpulse = 0, currentImpulse, timeBetweenImpulses;
float currentSpeed, dist, averageSpeed, totalDistance;
float circuit = 0.4396; // wheel circuit in meters
int screen;

void Lcd() {
    lcd.setCursor(0, 0);
    lcd.print("Spd: ");
    lcd.setCursor(0, 1);
    lcd.print("Dist: ");
    lcd.setCursor(5, 0);
    lcd.print(currentSpeed);
    lcd.setCursor(11, 0);
    lcd.print(" cm/m");
    dist = impulses*circuit; // distance in meters
    lcd.setCursor(6, 1);
    lcd.print(dist);
    lcd.setCursor(14, 1);
    lcd.print(" m");
 }
//void Lcd();

void setup() {
  lcd.begin(16, 2); //Deklaracja typu

  pinMode(A0, INPUT);
}

void loop() {
  if(analogRead(A0)>=70) {
      impulses++;
      time = (millis()-previous);
      currentSpeed = (circuit/time)*60000.0; // speed in meters per minute
      previous = millis();
      //previousImpulse = currentImpulse;
      Lcd();
      delay(100);
  }
}