io.s

AVR单片机系统开发经典实例部分源程序

	.module IO.c
	.area text(rom, con, rel)
	.dbfile D:\AVR\完成的代码\43F0E~1.1US\IO.c
	.dbfunc e delay_1ms _delay_1ms fV
;              i -> R16,R17
	.even
_delay_1ms::
	.dbline -1
	.dbline 5
; #include <iom128v.h>
; #define xtal 4
; 
; void delay_1ms(void)
; 	 {
	.dbline 7
; 	  unsigned int i;
;  	  for(i=1;i<(unsigned int)(xtal*143-2);i++)
	ldi R16,1
	ldi R17,0
	xjmp L5
L2:
	.dbline 8
L3:
	.dbline 7
	subi R16,255  ; offset = 1
	sbci R17,255
L5:
	.dbline 7
	cpi R16,58
	ldi R30,2
	cpc R17,R30
	brlo L2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbsym r i 16 i
	.dbend
	.dbfunc e delay_ms _delay_ms fV
;              i -> R20,R21
;              n -> R22,R23
	.even
_delay_ms::
	xcall push_gset2
	movw R22,R16
	.dbline -1
	.dbline 11
;       	; 
; 	 }
; void delay_ms(unsigned int n)
; 	 {
	.dbline 12
;  	  unsigned int i=0;
	clr R20
	clr R21
	xjmp L8
L7:
	.dbline 14
	.dbline 15
	xcall _delay_1ms
	.dbline 16
	subi R20,255  ; offset = 1
	sbci R21,255
	.dbline 17
L8:
	.dbline 13
;    	  while(i<n)
	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
	.dbfunc e main _main fV
;              j -> <dead>
;              i -> <dead>
	.even
_main::
	.dbline -1
	.dbline 21
;    	  		{
; 			 delay_1ms();
; 			 i++;
;    			}
; 	 }
; 
; void main(void)
; 	 {
	xjmp L12
L11:
	.dbline 24
	.dbline 25
	xcall _delay_1ms
	.dbline 26
	ldi R16,3
	ldi R17,0
	xcall _delay_ms
	.dbline 28
L12:
	.dbline 23
	xjmp L11
X0:
	.dbline -2
L10:
	.dbline 0 ; func end
	ret
	.dbsym l j 1 c
	.dbsym l i 1 c
	.dbend