/**
   Arduino Calculator

   Copyright (C) 2020, Uri Shaked.
   Released under the MIT License.

   https://forum.arduino.cc/t/inconsistent-behaviour-with-custom-chars-in-liquidcrystal/1330537/19
   2024-12-13 by noiasca
   code in thread
   
*/

#include <LiquidCrystal.h>

#include "icons.h"

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 7, d7 = 8;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int counter = 0;

void setup() {
  Serial.begin(115200);
  lcd.begin(16, 2);
  pinMode(6, OUTPUT); // Turn on LCD backlight
  analogWrite(6, 255);
}

void loop() {
  lcd.setCursor(6, 0);
  lcd.print(counter);
  lcd.setCursor(3, 0);

  if(counter > 1) {
    swapIcon(0);
  }
  lcd.write(byte(0));
  delay(500);

  swapIcon(1);
  lcd.write(byte(0));
  delay(500);

  counter += 1;
}

void swapIcon(int icon){
  byte icon_buf[8];
  memcpy_P(icon_buf, icon_lookup[icon], 8);
  //Serial.println(icon_buf[0], BIN);
  lcd.createChar(0, icon_buf);
}
//