main.s

一个关于AVR单片机的例程

	.module main.c
	.area text(rom, con, rel)
	.dbfile E:\avr\2.2.1\main.c
	.dbfunc e delay _delay fV
;              i -> R16
;              j -> R18
	.even
_delay::
	.dbline -1
	.dbline 4
; #include <iom16v.h>
; 
; void delay(void)
; {
	.dbline 5
;  unsigned char i=0,j=0;
	clr R16
	.dbline 5
	clr R18
	.dbline 6
;  for(i=1;i!=0;i++)
	ldi R16,1
	xjmp L5
L2:
	.dbline 7
;   {
	.dbline 8
;    for(j=1;j!=0;j++) 
	ldi R18,1
	xjmp L9
L6:
	.dbline 9
L7:
	.dbline 8
	inc R18
L9:
	.dbline 8
	tst R18
	brne L6
	.dbline 10
L3:
	.dbline 6
	inc R16
L5:
	.dbline 6
	tst R16
	brne L2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbsym r i 16 c
	.dbsym r j 18 c
	.dbend
	.dbfunc e main _main fV
;              i -> R20
	.even
_main::
	.dbline -1
	.dbline 14
;     ;
;   }
; }
; 
; void main(void)
; { 
	.dbline 15
;   unsigned char i=0;
	clr R20
	.dbline 16
;   DDRA=0xFF;
	ldi R24,255
	out 0x1a,R24
	xjmp L12
L11:
	.dbline 18
;   while(1) 
;   {
	.dbline 19
;    for(i=0;i<8;i++)
	clr R20
	xjmp L17
L14:
	.dbline 20
	.dbline 21
	ldi R16,1
	mov R17,R20
	xcall lsl8
	out 0x1b,R16
	.dbline 22
	xcall _delay
	.dbline 23
L15:
	.dbline 19
	inc R20
L17:
	.dbline 19
	cpi R20,8
	brlo L14
	.dbline 24
L12:
	.dbline 17
	xjmp L11
X0:
	.dbline -2
L10:
	.dbline 0 ; func end
	ret
	.dbsym r i 20 c
	.dbend