File content as of revision 1:3acf57259c58:

#include "mbed.h"
#include "DebounceIn_.h"
#include <stdbool.h>

DebounceIn button1(p15);
DebounceIn button2(p16);
DebounceIn button3(p17);
DebounceIn button4(p21);

class CSimonButton {
    _Bool pressed;
    int button;
  public:
          CSimonButton();
    _Bool IsPressed(void);
    int   GetButton(void) {return button;};
    void  Handle(void);
};

CSimonButton::CSimonButton() {
    button1.mode(PullUp);
    button2.mode(PullUp);
    button3.mode(PullUp);
    button4.mode(PullUp);
  pressed = 0;
}

_Bool CSimonButton::IsPressed(void) {
  _Bool tmp;
  
  tmp = pressed;
  pressed = 0;
  return tmp;
}

void CSimonButton::Handle(void) {
      if  (button1.pressed) {
        button1.pressed = 0;
        pressed = 1;
        button = 1;
      }
      if  (button2.pressed) {
        button2.pressed = 0;
        pressed = 1;
        button = 2;
      }
      if  (button3.pressed) {
        button3.pressed = 0;
        pressed = 1;
        button = 3;
      }
      if  (button4.pressed) {
        button4.pressed = 0;
        pressed = 1;
        button = 4;
      }
  
}


uint8_t ledState;

BusOut leds(LED1, LED2, LED3, LED4);

int main() {
    CSimonButton simonButton;
    while (1) {
      leds.write(ledState); 
      simonButton.Handle();
      
      if (simonButton.IsPressed()) {
        ledState ^= 1 << (simonButton.GetButton() - 1);
      }
    }
}
/*
int main() {
    while(1) {
        myled = 1;
        wait(0.2);
        myled = 0;
        wait(0.2);
    }
}
*/