#include <Wire.h>
#include <LiquidCrystal.h>
#include <math.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

const int analogPinF = A0;
const int analogPinR = A1;

int adcValueF = 0;
int adcValueR = 0;
float voltageF = 0;
float voltageR = 0;
int adcValueFmax = 0;
int adcValueRmax = 0;

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2);
  
}

void loop() {
  lcd.clear();

adcValueFmax = 0;
adcValueRmax = 0;


  for(int i = 0; i <=15; i++) {
      adcValueF = analogRead(analogPinF);
      adcValueR = analogRead(analogPinR);
      adcValueFmax = max(adcValueF , adcValueFmax);
      adcValueRmax = max(adcValueR , adcValueRmax);
  }


  
  voltageF = (adcValueFmax * 5.0) / 1024.0; //FWD
  voltageR = (adcValueRmax * 5.0) / 1024.0; //REF
 

lcd.setCursor(0, 0);
 unsigned long startTime = micros();
lcd.print("Vf: ");
unsigned long endTime = micros();
Serial.print("Execution time (µs): ");
Serial.println(endTime - startTime);

lcd.print(voltageF);

lcd.setCursor(0, 1);
lcd.print("Vr: ");
lcd.print(voltageR);



delay(1000);
}