time_delay.s

来自「atmega128单片机串口调试程序」· S 代码 · 共 55 行

	.module time_delay.c
	.area text(rom, con, rel)
	.dbfile F:\zhangxuehuan\test\test2\time_delay.c
	.dbfunc e delay_ms _delay_ms fV
;              i -> R20,R21
;           time -> R16,R17
	.even
_delay_ms::
	xcall push_gset1
	.dbline -1
	.dbline 5
; #include"includes.h"
; 
; /*time delay sub*/
; void delay_ms(int time)
; {
	.dbline 7
;     int i;
;     for(;time>0;time--)
	xjmp L5
L2:
	.dbline 8
	clr R20
	clr R21
L6:
	.dbline 8
L7:
	.dbline 8
	subi R20,255  ; offset = 1
	sbci R21,255
	.dbline 8
	cpi R20,100
	ldi R30,0
	cpc R21,R30
	brlt L6
L3:
	.dbline 7
	subi R16,1
	sbci R17,0
L5:
	.dbline 7
	clr R2
	clr R3
	cp R2,R16
	cpc R3,R17
	brlt L2
	.dbline -2
L1:
	xcall pop_gset1
	.dbline 0 ; func end
	ret
	.dbsym r i 20 I
	.dbsym r time 16 I
	.dbend