#include <LiquidCrystal.h>

LiquidCrystal lcd(30, 32, 34, 35, 36, 37);

void setup() {
  lcd.begin(16, 2);
  Serial.begin(9600);
  pinMode(3, OUTPUT);
  pinMode(8, OUTPUT);
  lcd.setCursor(2, 0);
  lcd.print("CE362-Lab3");
}

void loop() {
  int adcValue = analogRead(A1);
  int duty = map(adcValue, 0, 1023, 0, 255);
  analogWrite(3, duty);

  if (adcValue > 600) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("ADC reading is");
    lcd.setCursor(0, 1);
    lcd.print("more than 600");
    Serial.print("ADC=");
    Serial.print(adcValue);
    Serial.println(" >600");
    for (int i = 0; i <= 255; i += 25) {
      analogWrite(8, i);
      delay(50);
    }
    for (int i = 255; i >= 0; i -= 25) {
      analogWrite(8, i);
      delay(50);
    }
    return;
  }

  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("CE362-Lab3");
  lcd.setCursor(0, 1);
  lcd.print("ADC value:");
  lcd.setCursor(11, 1);
  lcd.print("    ");
  lcd.setCursor(11, 1);
  lcd.print(adcValue);

  Serial.print("ADC=");
  Serial.print(adcValue);
  Serial.print(" Duty=");
  Serial.println(duty);

  delay(50);
}