Keypad with Multi-TASKS

Projects General Guidance
3

yes, i need one after the other

code:

#include <Keypad.h>

const int LED_1 = 30;
const int LED_2 = 31;
const int LED_2 = 32;

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns

char hexaKeys[ROWS][COLS] = {
  {'1','2','3','F1'}
  {'4','5','6','F2'},
  {'7','8','9','F3'},
  {'mode','0','cancel','Enter'}
};
byte rowPins[ROWS] = {50, 48, 46, 44};
byte colPins[COLS] = {51, 49, 47, 45}; 

Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 


void setup()
{
  pinMode(LED_1, OUTPUT);
  pinMode(LED_2, OUTPUT);
  pinMode(LED_3, OUTPUT);
}

void loop()
{
  char customKey = customKeypad.getKey();
}