#include < Arduino.h >
#define TRIGGER_PIN 12
#define ECHO_PIN 13
class Led {
private:
const unsigned char OFF = 0;
const unsigned char ON = 1;
unsigned char pin;
unsigned char state;
public:
Led(unsigned char pin) : pin(pin), state(OFF) {
pinMode(pin, OUTPUT);
off();
}
void off() {
state = OFF;
digitalWrite(pin, state);
}