// Learn about the ESP32 WiFi simulation in
// https://docs.wokwi.com/guides/esp32-wifi

// ESP32 - LCD/I2C
// ---------------
// 3.3V  -  Vcc
//  GND  -  GND
//   22  -  SCL
//   21  -  SDA

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


LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);


uint8_t SEG_D[8] = {0b00000,  0b00000,  0b00000,  0b00000,  0b00000,  0b11111,  0b11111,  0b11111};
uint8_t SEG_A[8] = {0b11111,  0b11111,  0b11111,  0b00000,  0b00000,  0b00000,  0b00000,  0b00000};
uint8_t SEG_DG[8] = {0b11111,  0b00000,  0b00000,  0b00000,  0b00000,  0b11111,  0b11111,  0b11111};
uint8_t SEG_AG[8] = {0b11111,  0b11111,  0b11111,  0b00000,  0b00000,  0b00000,  0b11111,  0b11111};
uint8_t SEG_GU[8] = {0b00000,  0b00000,  0b00000,  0b00000,  0b00000,  0b00000,  0b11111,  0b11111};
uint8_t SEG_GD[8] = {0b11111,  0b00000,  0b00000,  0b00000,  0b00000,  0b00000,  0b00000,  0b00000};
uint8_t DOT[8] = {0b00000,  0b00000,  0b00000,  0b01100,  0b01100,  0b00000,  0b00000,  0b00000};
uint8_t DEG[8] = {0b01100,  0b10010,  0b10010,  0b01100,  0b00000,  0b00000,  0b00000,  0b00000};

void digSeg(byte x, byte y, byte z1, byte z2, byte z3, byte z4, byte z5, byte z6) {
  LCD.setCursor(x, y);
  LCD.write(z1); LCD.write(z2); LCD.write(z3);
  LCD.setCursor(x, y + 1);
  LCD.write(z4); LCD.write(z5); LCD.write(z6);
}

void drawDigit(byte digit, byte col, byte row) {
  switch (digit) {
    case 0:
      digSeg(col, row, 255, 2, 255, 255, 1, 255);
      break;
    case 1:
      digSeg(col, row, 32, 32, 255, 32, 32, 255);
      break;
    case 2:
      digSeg(col, row, 3, 3, 255, 255, 0, 0);
      break;
    case 3:
      digSeg(col, row, 3, 3, 255, 0, 0, 255);
      break;
    case 4:
      digSeg(col, row, 255, 6, 255, 7, 7, 255);
      break;
    case 5:
      digSeg(col, row, 255, 3, 3, 0, 0, 255);
      break;
    case 6:
      digSeg(col, row, 255, 3, 3, 255, 0, 255);
      break;
    case 7:
      digSeg(col, row, 2, 2, 255, 32, 32, 255);
      break;
    case 8:
      digSeg(col, row, 255, 3, 255, 255, 0, 255);
      break;
    case 9:
      digSeg(col, row, 255, 3, 255, 0, 0, 255);
      break;
  }
}

void setup() {
  Serial.begin(115200);

  LCD.init();
  LCD.backlight();

  LCD.createChar(0, SEG_DG);
  LCD.createChar(1, SEG_D);
  LCD.createChar(2, SEG_A);
  LCD.createChar(3, SEG_AG);
  LCD.createChar(6, SEG_GU);
  LCD.createChar(7, SEG_GD);
  LCD.createChar(4, DOT);
  LCD.createChar(5, DEG);

  LCD.setCursor(0, 0);
  LCD.print("Ready !");
  delay(1000);
  LCD.clear();

  for (byte i = 0; i < 5; i++) {
    drawDigit (i, i * 4, 0);
    drawDigit (i + 5, i * 4, 2);
  }

  

  // LCD.print(" THU");

  // LCD.setCursor(0, 3);
  // LCD.print("23.5");
  // LCD.write(5);//degree symbol
  // LCD.print("C");

  // LCD.setCursor(7, 3);
  // LCD.print("SUNNY");
}

void loop() {
  LCD.setCursor(7, 0);
  LCD.write(32);
  LCD.setCursor(7, 1);
  LCD.write(32);
  delay(500);
  LCD.setCursor(7, 0);
  LCD.write(4);
  LCD.setCursor(7, 1);
  LCD.write(4);
  delay(500);
}