delay.s

AVR单片机的电机测速程序

	.module delay.c
	.area text(rom, con, rel)
	.dbfile C:\DOCUME~1\www\桌面\motor_ce\delay.c
	.dbfunc e delay_1ms _delay_1ms fV
;              i -> R16,R17
	.even
_delay_1ms::
	.dbline -1
	.dbline 3
; //-----------------------------------------
; void delay_1ms(void)
; {
	.dbline 5
; unsigned int i;
; for(i=0;i<1412;i++)
	clr R16
	clr R17
	xjmp L5
L2:
	.dbline 6
	.dbline 7
L3:
	.dbline 5
	subi R16,255  ; offset = 1
	sbci R17,255
L5:
	.dbline 5
	cpi R16,132
	ldi R30,5
	cpc R17,R30
	brlo L2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbsym r i 16 i
	.dbend
	.dbfunc e delay_nms _delay_nms fV
;              i -> R20,R21
;              n -> R22,R23
	.even
_delay_nms::
	xcall push_gset2
	movw R22,R16
	.dbline -1
	.dbline 10
; {
; }
; }
; void delay_nms(unsigned int n)
; {
	.dbline 12
; unsigned int i;
; for(i=0;i<n;i++)
	clr R20
	clr R21
	xjmp L10
L7:
	.dbline 13
	.dbline 14
	xcall _delay_1ms
	.dbline 15
L8:
	.dbline 12
	subi R20,255  ; offset = 1
	sbci R21,255
L10:
	.dbline 12
	cp R20,R22
	cpc R21,R23
	brlo L7
	.dbline -2
L6:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r i 20 i
	.dbsym r n 22 i
	.dbend