[ProjectKaiser]

Code:

        Boolean midipedalflag;

            midipedalflag=false;  // the flag set by midipedal
            do {                 // and space bar
                synchronized(midipedalflag){
                    midipedalflag.wait();                
                }
            } while (!midipedalflag);
            midipedalflag=false;

Multipedal should do:

Code:

midipedalflag.notify();

Note:
1) To be notifiable midipedalflag is Boolean, not boolean
2) Seems you can miss some events. E.g. midipedal sets midipedalflag = true before you set it to false by line

Code:

            midipedalflag=false;  // the flag set by midipedal