.include "tn13def.inc"

    .def   A      = r16
    
	


begin:      rjmp Anfang			; Power On
			reti
			reti	
			rjmp Tim0_OVF		; Timer0 Overflow Handler
			reti 
			reti
			rjmp Tim0_compare	; Timer0 Compare A
			reti 
			reti
			reti

					; 
;-----------------------------------------------------------------------


Anfang:
       
        sbi    ddrb,0     ;Datenrichtung PB0

        ldi    A,0b01000000     ;Modus Normal PWM & Pin Einstellung
        out    TCCR0A,A

		ldi	   A,0b00000100		; Teiler 256
		out	   TCCR0B,A

        ldi    A,92				;für 20ms
		out    TIFR0,A

		ldi	   A,0b00000001		;Interrupt auslösen wenn Variable in TIFR0 erreicht ist
		out	   TIMSK0,A

;------------------------------------------------------------------------
	

Tim0_OVF:

		ldi A,7			;1,5ms
  		out OCR0A,A

reti

;-------------------------------------------------------------------------

Tim0_compare:

		ldi A,92
		out OCR0A,A		;20ms

reti