#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
const int a = 23;
const int b = 25;
const int c = 27;
const int d = 29;
const int e = 31;
const int f = 33;
const int g = 35;
const int p = 37;
const int Rows = 4;
const int Cols = 4;
char keys [Rows][Cols] =
{
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins [Rows] = {1,2,3,4};
byte colPins [Cols] = {5,6,7,8};
Keypad keypad = Keypad (makeKeymap(keys), rowPins, colPins, Rows, Cols);
void setup()
{
lcd.init();
lcd.backlight();
lcd.clear();
lcd.setCursor(0, 0);
pinMode(p, OUTPUT);
pinMode(a, OUTPUT);
pinMode(a, OUTPUT);
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
pinMode(g, OUTPUT);
}
void keyPress()
{
char key = keypad.getKey();
if (key)
{
lcd.clear();
lcd.print("U Pressed: ");
lcd.print(key);
}
if (key == '1')
{
digitalWrite(a, HIGH);
}
else if (key == '2')
{
digitalWrite(b, HIGH);
}
else if (key == '3')
{
digitalWrite(c, HIGH);
}
else if (key == '4')
{
digitalWrite(d, HIGH);
}
else if (key == '5')
{
digitalWrite(e, HIGH);
}
else if (key == '6')
{
digitalWrite(f, HIGH);
}
else if (key == '7')
{
digitalWrite(g, HIGH);
}
else if (key == '8')
{
digitalWrite(p, HIGH);
}
}
void loop()
{
keyPress();
}
Comments
0 B
|👍
/👎
0 B
|0 👍
/0 👎