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.nolist

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.include "m168def.inc"      ; Same family as 328P

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.list

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;; Interrupt Vector

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.org 0x00

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        rjmp        init

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.org OC1Aaddr

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		; Timer/Counter1 Compare Output A

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		rjmp		Timer_OC1A

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.org OC0Aaddr

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        ; Timer/Counter0 Compare Output A

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        rjmp        Timer_OC0A

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.org 0x40

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;; Syntax

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.include "macros.inc"

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;; Timer0 Compare A handler

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Tick:

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	; Toggle

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		sbi			PIND, PORTD7

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		ret

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;; Timer

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.set TIMER0_CB_A = Tick

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.include "timer.inc"

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Main:

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init:

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    ; Stack

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        ldi         r16, high(RAMEND)

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        ldi         r17, low(RAMEND)

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        out         SPH, r16

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        out         SPL, r17

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    ; Enable interrupts

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        sei

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	; Turn off LED7

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		sbi			DDRB, PORTB1

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		sbi			PORTB, PORTB1

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	; DEBUG

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		sbi			DDRD, PORTD7

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		cbi			PORTD, PORTD7

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		sbi			DDRD, PORTD6

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		sbi			DDRD, PORTD5

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    ; Timer

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		; setup

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        rcall       Timer0_Init

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		; run with 255k cycles

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		ldi			r16, 255

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		rcall		Timer0_Start	

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loop:

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	; Run timer

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		rjmp		loop

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