main.s

学习AVR单片机的基础实验程序 适合初学者学习提高

	.module main.c
	.area text(rom, con, rel)
	.dbfile D:\AVR\我的程序\流水灯和跑马灯实验/cfg.h
	.dbfunc e delay_ms _delay_ms fV
;              i -> R20,R21
;           time -> R16,R17
	.even
_delay_ms::
	xcall push_gset1
	.dbline -1
	.dbline 10
; /***********************************
; *实验目的：熟悉I/O操作及流水等编程
; *设    计：萧联珠
; *日    期：2007-11-17
; ************************************/
; #include <iom16v.h>
; #include "cfg.h"
; 
; void main()
; {
	.dbline 12
;   port_init();
;   while(1)
	xjmp L5
L2:
	.dbline 13
	clr R20
	clr R21
L6:
	.dbline 13
L7:
	.dbline 13
	subi R20,255  ; offset = 1
	sbci R21,255
	.dbline 13
	cpi R20,232
	ldi R30,3
	cpc R21,R30
	brlt L6
L3:
	.dbline 12
	subi R16,1
	sbci R17,0
L5:
	.dbline 12
	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
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 18
;   {
;    display();
;   }
; }
; 
; 
	.dbline 19
; 
	ldi R24,255
	out 0x17,R24
	.dbline 20
; 
	out 0x18,R24
	.dbline -2
L10:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e display _display fV
;          index -> R20,R21
	.even
_display::
	xcall push_gset1
	.dbline -1
	.dbline 25
; 
; 
; 
; 
; 
	.dbline 27
; 
; 
	clr R20
	clr R21
L12:
	.dbline 28
	.dbline 29
	ldi R16,1
	ldi R17,0
	movw R18,R20
	xcall lsl16
	movw R2,R16
	com R2
	com R3
	out 0x18,R2
	.dbline 30
	ldi R16,100
	ldi R17,0
	xcall _delay_ms
	.dbline 31
L13:
	.dbline 27
	subi R20,255  ; offset = 1
	sbci R21,255
	.dbline 27
	cpi R20,8
	ldi R30,0
	cpc R21,R30
	brlt L12
	.dbline 32
; 
; 
; 
; 
; 
	ldi R20,8
	ldi R21,0
L16:
	.dbline 33
	.dbline 34
	movw R18,R20
	subi R18,2
	sbci R19,0
	ldi R16,1
	ldi R17,0
	xcall lsl16
	movw R2,R16
	com R2
	com R3
	out 0x18,R2
	.dbline 35
	ldi R16,100
	ldi R17,0
	xcall _delay_ms
	.dbline 36
L17:
	.dbline 32
	subi R20,1
	sbci R21,0
	.dbline 32
	ldi R24,2
	ldi R25,0
	cp R24,R20
	cpc R25,R21
	brlt L16
	.dbline -2
L11:
	xcall pop_gset1
	.dbline 0 ; func end
	ret
	.dbsym r index 20 I
	.dbend
	.dbfile D:\AVR\我的程序\流水灯和跑马灯实验\main.c
	.dbfunc e main _main fV
	.even
_main::
	.dbline -1
	.dbline 10
	.dbline 11
	xcall _port_init
	xjmp L22
L21:
	.dbline 13
	.dbline 14
	xcall _display
	.dbline 15
L22:
	.dbline 12
	xjmp L21
X0:
	.dbline -2
L20:
	.dbline 0 ; func end
	ret
	.dbend