#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // Assuming I2C address 0x27 for LCD

int batteryRemaining = 100; //%

byte batteryTop1[] = {B11110, B11111, B11111, B11111, B11111, B11111, B11111, B11110};
byte batteryTop2[] = {B11110, B11011, B11001, B11001, B11001, B11001, B11011, B11110};
byte batteryTop3[] = {B11110, B00011, B00001, B00001, B00001, B00001, B00011, B11110};
byte batteryMid1[] = {B11111, B11111, B11111, B11111, B11111, B11111, B11111, B11111};
byte batteryMid2[] = {B11111, B11100, B11100, B11100, B11100, B11100, B11100, B11111};
byte batteryMid3[] = {B11111, B10000, B10000, B10000, B10000, B10000, B10000, B11111};
byte batteryMid4[] = {B11111, B00000, B00000, B00000, B00000, B00000, B00000, B11111};

int serialData;
int batteryPercentage = 100;


void setup() {

  Serial.begin(9600);  // open serial port, set data rate to 9600 bps
  Serial.println("Serial Initialized");
 
  lcd.begin(16, 2);
  lcd.clear();
  lcd.createChar(0, batteryTop1); // ||||>
  lcd.createChar(1, batteryTop2); // ||  >
  lcd.createChar(2, batteryTop3); //     >
  lcd.createChar(3, batteryMid1); // |||||
  lcd.createChar(4, batteryMid2); // |||
  lcd.createChar(5, batteryMid3); // |
  lcd.createChar(6, batteryMid4); // 
  
}


void loop() {
  
  if (Serial.available() > 0) {  // some data is available in the serial buffer

    serialData = Serial.parseInt();  // read the integer value from the buffer
    if (serialData != 0) {
      batteryPercentage = serialData;
      Serial.print("Entered: ");
      Serial.println(serialData);      // send the same value back using the serial port
    }
  }

  switch (batteryPercentage) {
    case 100:
      // Display 100% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(0));
      lcd.setCursor(14, 0);
      lcd.write(byte(3));
      lcd.setCursor(13, 0);
      lcd.write(byte(3));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;
    
    case 90:
      // Display 90% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(1));
      lcd.setCursor(14, 0);
      lcd.write(byte(3));
      lcd.setCursor(13, 0);
      lcd.write(byte(3));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 80:
      // Display 80% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(3));
      lcd.setCursor(13, 0);
      lcd.write(byte(3));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 70:
      // Display 70% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(4));
      lcd.setCursor(13, 0);
      lcd.write(byte(3));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 60:
      // Display 60% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(5));
      lcd.setCursor(13, 0);
      lcd.write(byte(3));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 50:
      // Display 50% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(6));
      lcd.setCursor(13, 0);
      lcd.write(byte(3));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 40:
      // Display 40% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(6));
      lcd.setCursor(13, 0);
      lcd.write(byte(4));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 30:
      // Display 30% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(6));
      lcd.setCursor(13, 0);
      lcd.write(byte(5));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 20:
      // Display 20% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(6));
      lcd.setCursor(13, 0);
      lcd.write(byte(6));
      lcd.setCursor(12, 0);
      lcd.write(byte(3));
    break;

    case 10:
      // Display 10% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(6));
      lcd.setCursor(13, 0);
      lcd.write(byte(6));
      lcd.setCursor(12, 0);
      lcd.write(byte(4));
    break;

  case 1:
      // Display 0% on LCD
      lcd.setCursor(15, 0);
      lcd.write(byte(2));
      lcd.setCursor(14, 0);
      lcd.write(byte(6));
      lcd.setCursor(13, 0);
      lcd.write(byte(6));
      lcd.setCursor(12, 0);
      lcd.write(byte(5));
    break;
    

  }
}