File content as of revision 0:518dcb1bc8ad:

/*  State Machine Implementierung für einen Lichtschalter
    simuliert durch den Rot-Anteil der RGB-Led und dem Taster sw1
    siehe: https://developer.mbed.org/users/fpucher/code/HIM0Board/wiki/STM-Schalter
*/

#include "mbed.h"

PwmOut red(p36);
PwmOut green(p5);
PwmOut blue(p34);
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
DigitalIn sw2(P0_10);
DigitalIn sw3(P0_23);
DigitalIn sw4(P1_16);

// ---------------------- Event Klasse ------------------------
class Event
{
    bool _pressed;
    InterruptIn _isr;
public:
    Event( PinName pin ) : _isr(pin) {
        _pressed = false;
        _isr.rise(this, &Event::_RisingIsr);
    }

    void _RisingIsr() {
        if( _isr.read())
            _pressed = true;
    }

    bool CheckFlag() {
        if( _pressed ) {
            _pressed = false;
            return true;
        }
        return false;
    }

};

// ----------------------- STM Klasse ---------------------------
class Rgb
{
    PwmOut _red;
public:
    Rgb( PinName red ) : _red(red) {}
    void LedOn() {
        _red = 0;
    }

    void Dimm() {
        //_red = 0;
        for(float i=0.0; i <= 1.0; i+= 0.1) {
            _red = i;
            wait_ms(200);
        }
    }

    void LedOff() {
        _red = 1;
    }
};
//--------------------------- Hauptprogramm ------------------------

Rgb rgb(p36);
Event  sw1(P0_15);

int main()
{
    blue=green=1;
    rgb.LedOff();
    while(true) {
        if(sw1.CheckFlag())
            rgb.LedOn();
    }
//  ...
}