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| #include <Keypad.h>
#define ROWS 4
#define COLS 4
const char kp4x4Keys[ROWS][COLS] = {{'1', '2', '3', 'A'}, {'4', '5', '6', 'B'}, {'7', '8', '9', 'C'}, {'*', '0', '#', 'D'}};
byte rowKp4x4Pin [4] = {9, 8, 7, 6};
byte colKp4x4Pin [4] = {5, 4, 3, 2};
Keypad kp4x4 = Keypad(makeKeymap(kp4x4Keys), rowKp4x4Pin, colKp4x4Pin, ROWS, COLS);
void setup() {
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initialize System");
}
void loop() {
readKp4x4();
}
void readKp4x4() {
char customKey = kp4x4.getKey();
if (customKey) {
Serial.println(customKey);
}
} |
