Timer library for arduino that uses timer ISR

AllTimer.h

#ifndef AllTimer_h
#define AllTimer_h

typedef void(*dofun)();			//to be used when functions are to be called after each timer runs out.


class AllTimer{
public:
	AllTimer();
	
	static bool timeout;

	static float stopTimer(void);		//returns the time passed in seconds after startTimer.
	static void setTimer(int, dofun);		//sets the time after which function f will keep executing.
	static void startTimer(void);		//starts the timer. helps to know the time between start and stop of timer.
	static float knowTime(void);		//doesn't stop the timer; simply lets you know the seconds that passed after timer started.
	static void exitTimer(void);		//simply stop the timer and do nothing else.
	static void decideFun(void);
	static void decCounter(void);		//decrements counter for setTimer() and also executes the function f;

private:
	static float timerCnt;
	static int *ptrCounter;
	static int *perCounter;
	static int funToken;

	static void incCount(void);		//increments coutner for startTimer();
};

#endif