; ******************************************************
; BASIC .ASM template file for AVR
; ******************************************************

.include "D:\EEET22~1\TEACHI~1\Tools\VMLab\include\m32def.inc"
.DEF TEMP = R16 ;GENERAL PURPOSE ACCUMULATOR
.ORG $0000 ;STARTUP VECTOR

.ORG $0006 ;COMPARE MATCH VECTOR
.CSEG

;------ Reset and interrupt vectors ------------------------------
;
.ORG  0x00
START:
   rjmp  RESET  ; Reset vector
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
   reti
RESET:
	clr	R0				  			; use as zero value
   ldi   TEMP, low(RAMEND)   ; Init stack pointer
   out   SPL,  TEMP    			; RAMEND defined in M32DEF.INC
   ldi	TEMP, high(RAMEND)
   out	SPH,  TEMP

ON_RESET:

LDI TEMP, 0xFF
 OUT DDRB, TEMP
 LDI TEMP,0b01001011 ;PWM MODE 3
 OUT TCCR0, TEMP
LDI TEMP,0b00000010 ;ENABLE COMPARE INTERUPT
 OUT TIMSK,TEMP
 LDI TEMP, 0xFF
 OUT OCR0,TEMP

 SEI ;ENABLE INTERUPTS GLOBALLY

MAIN_LOOP:
RJMP MAIN_LOOP;TEMP DO-NOTHING LOOP

TIM0_COMPA:
 IN TEMP,OCR0
 DEC TEMP
 OUT OCR0,TEMP
 RETI