delay.s

avr单片机入门小程序

	.module delay.c
	.area text(rom, con, rel)
	.dbfile C:\DOCUME~1\Administrator\桌面\AVR程序\按键显示\delay.c
	.dbfunc e delay_1ms _delay_1ms fV
;              i -> R16,R17
	.even
_delay_1ms::
	.dbline -1
	.dbline 6
; #include <iom128v.h>
; #include <macros.h>
; #define xtal 1
; 
; void delay_1ms()             //1ms 延时
; {
	.dbline 8
;   unsigned int i;
;   for(i=1;i<570;i++)
	ldi R16,1
	ldi R17,0
	rjmp L5
L2:
	.dbline 9
;   ;
L3:
	.dbline 8
	subi R16,255  ; offset = 1
	sbci R17,255
L5:
	.dbline 8
	cpi R16,58
	ldi R30,2
	cpc R17,R30
	brlo L2
X0:
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbsym r i 16 i
	.dbend
	.dbfunc e delay_5ms _delay_5ms fV
;              i -> R16,R17
	.even
_delay_5ms::
	.dbline -1
	.dbline 13
; }
; 
; void delay_5ms()    //  延时 5ms
; {
	.dbline 15
;  unsigned int i;
;  for(i=0;i<2855;i++)
	clr R16
	clr R17
	rjmp L10
L7:
	.dbline 16
;  ;
L8:
	.dbline 15
	subi R16,255  ; offset = 1
	sbci R17,255
L10:
	.dbline 15
	cpi R16,39
	ldi R30,11
	cpc R17,R30
	brlo L7
X1:
	.dbline -2
L6:
	.dbline 0 ; func end
	ret
	.dbsym r i 16 i
	.dbend
	.dbfunc e delay _delay fV
;              i -> R20,R21
;              n -> R10,R11
	.even
_delay::
	rcall push_xgset300C
	mov R10,R16
	mov R11,R17
	.dbline -1
	.dbline 19
; }
; void delay(unsigned int n)
; {
	.dbline 20
;  unsigned int i=0;
	clr R20
	clr R21
	.dbline 21
;  for(i=0;i<n;i++)
	rjmp L15
L12:
	.dbline 22
;  delay_1ms();
	rcall _delay_1ms
L13:
	.dbline 21
	subi R20,255  ; offset = 1
	sbci R21,255
L15:
	.dbline 21
	cp R20,R10
	cpc R21,R11
	brlo L12
X2:
	.dbline -2
L11:
	.dbline 0 ; func end
	rjmp pop_xgset300C
	.dbsym r i 20 i
	.dbsym r n 10 i
	.dbend
	.dbfunc e main _main fV
	.even
_main::
	.dbline -1
	.dbline 26
; }
; 
; void main()
; {
	rjmp L18
L17:
	.dbline 28
;  while(1)
;  {
	.dbline 29
;  delay(10);
	ldi R16,10
	ldi R17,0
	rcall _delay
	.dbline 31
; 
;  }
L18:
	.dbline 27
	rjmp L17
X3:
	.dbline -2
L16:
	.dbline 0 ; func end
	ret
	.dbend
; }