Using the right pins for keypad

Question

I am using msp430g2553 microcontroller and a 4x4 HC543 keypad. I am using Energia IDE. I have connected the keypad from pin 2 through 9. My code is as follows:

#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {2, 3, 4, 5}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {6, 7, 8, 9}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup(){
  Serial.begin(9600);
}

void loop(){
  char key = keypad.getKey();

  if (key){
    Serial.println(key);
  }
}

However I am unable to get an output at the Serial Monitor. I am especially confused if I am using the right pin configuration.

I have downloaded the Keypad.h library from Arduino website and imported it in Energia. Can this be a problem? Since all the functions (like makeKeymap and getKey) related to Keypad.h are properly colored.

Answer 1

Could you try this?

byte rowPins[ROWS] = {6, 7, 8, 9}; //connect to the row pinouts of the keypad byte colPins[COLS] = {2, 3, 4, 5}; //connect to the column pinouts of the keypad