#include <bits/stdc++.h>
#include "matrix.h"
#include <Wire.h>;
#include <LiquidCrystal_I2C.h>;
using namespace std;
LiquidCrystal_I2C lcd(0x27, 20, 4);
// place of cursor
int cursorCol = -1;
void setup() {
initPin();
Serial.begin(115200);
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
}
void loop() {
vector<String> pressed = checkMatrix();
for (String i : pressed) {
if (i == "<-" && cursorCol > -1) {
lcd.setCursor(cursorCol, 0);
lcd.print(" ");
cursorCol--;
}
else {
cursorCol++;
lcd.setCursor(cursorCol, 0);
lcd.print(i);
}
}
Serial.println();
delay(150);
}