led1.s

AVR单片机源代码,采集按键值,并点亮LED.

	.module led1.c
	.area text(rom, con, rel)
	.dbfile D:\我的设计\avr\led\cx\led1.c
	.dbfunc e main _main fV
;              j -> R16,R17
;              k -> R18,R19
	.even
_main::
	.dbline -1
	.dbline 10
; //
; //
; //
; 
; 
; #include<iom16v.h>
; #include<macros.h>
; 
; void main()
; {
	.dbline 12
; unsigned int j,k;
; j=1;
	ldi R16,1
	ldi R17,0
	.dbline 13
; DDRA|=0XFF;
	in R24,0x1a
	ori R24,255
	out 0x1a,R24
	xjmp L3
L2:
	.dbline 15
; while(1)
; {
	.dbline 16
; k=0;
	clr R18
	clr R19
	.dbline 18
; 
; PORTA=j;
	out 0x1b,R16
	.dbline 19
; for(k=0;k<=50000;k++);
	xjmp L8
L5:
	.dbline 19
L6:
	.dbline 19
	subi R18,255  ; offset = 1
	sbci R19,255
L8:
	.dbline 19
	ldi R24,80
	ldi R25,195
	ldi R26,0
	ldi R27,0
	movw R2,R18
	clr R4
	clr R5
	cp R24,R2
	cpc R25,R3
	cpc R26,R4
	cpc R27,R5
	brge L5
X0:
	.dbline 20
; j=j<<1;
	lsl R16
	rol R17
	.dbline 21
; if(j>0x80)j=1;
	ldi R24,128
	ldi R25,0
	cp R24,R16
	cpc R25,R17
	brsh L9
X1:
	.dbline 21
	ldi R16,1
	ldi R17,0
L9:
	.dbline 22
; }
L3:
	.dbline 14
	xjmp L2
X2:
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbsym r j 16 i
	.dbsym r k 18 i
	.dbend
; 
; }