#include <Wire.h>
#include <LiquidCrystal_I2C.h>
//Link: https://stackoverflow.com/questions/67450098/how-to-increment-values-with-buttons-on-arduino-uno
//Link: https://docs.arduino.cc/built-in-examples/control-structures/SwitchCase/
//https://www.geeksforgeeks.org/analog-to-digital-conversion-in-arduino/

#define LCD_ADDRESS 0x27
#define LCD_COLUMNS 16
#define LCD_ROWS 2

#define THRESHOLD 1000

LiquidCrystal_I2C lcd(LCD_ADDRESS, LCD_COLUMNS, LCD_ROWS);
// float  fsetp = 0;
// float value1 = 0;
int sensor = A0;
float  setpoint = 0.0;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.begin(16, 2);
  pinMode(sensor, INPUT);

}

void loop() {
  lcd.clear();
  lcd.setCursor(0, 0);
  int value = analogRead(sensor);
//   float value1 = value * (5.0 / 1023);
//   int  stp = ( value1 / 5 ) * 1023 ;

//   lcd.print("V= ");
//   lcd.print(value1);
  //   lcd.setCursor(0, 8);
  //   lcd.print(",= ");
  //   lcd.print(stp);
  //delay(1000);
// float us =9999.00;
// float ls= -1999.00;

  setpoint  = map(value, 0, 1023, -1999, 9999);

  lcd.setCursor(0, 1);
  lcd.print("setpoint=");
  lcd.println(setpoint);



  // if (value1 == 0||setpoint == -1999)
  // {
  //   setpoint ++;
  // }
  // if (value1 == 5||setpoint == 9999)
  // {
  //   setpoint ++;
  // }
  // lcd.clear();
  // lcd.setCursor(0, 1);
  // lcd.print("setpoint=");
  //  lcd.println(setpoint);
  // // for ( stp = -1999; stp <= 9999; stp++)
  //   lcd.print("setpoint=");
  // lcd.print(stp);
  delay(1000);
}