3.s

这里有11个用ICCAVR开发的源代码,经DEMO板调试后已经通过.

	.module _3.c
	.area text(rom, con, rel)
	.dbfile D:\xij\demo\diy02-8\02-8A-3\3.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 4
; #include	"iom48v.h"
; 
; void		port_init()
; {
	.dbline 5
;  PORTB=0XFF;DDRB=0XFF;//设置PB口输出
	ldi R24,255
	out 0x5,R24
	.dbline 5
	out 0x4,R24
	.dbline 6
;  PORTD=0XFF;DDRD=0X00;//设置pd口输入
	out 0xb,R24
	.dbline 6
	clr R2
	out 0xa,R2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e main _main fV
;              i -> R20
	.even
_main::
	.dbline -1
	.dbline 10
; }
; 
; void		main()
; {
	.dbline 12
;  unsigned		  char i;
;  port_init();	  //端口初始化
	rcall _port_init
	rjmp L4
L3:
	.dbline 13
;  while(1){
	.dbline 14
;  i=PIND&0x04;   		  //读出PD2口状态
	in R20,0x9
	andi R20,4
	.dbline 15
;  if(i==0)
	brne L6
	.dbline 16
;  	 PORTB=0xf8;
	ldi R24,248
	out 0x5,R24
	rjmp L7
L6:
	.dbline 18
;  else
;  	 PORTB=0XFF; 
	ldi R24,255
	out 0x5,R24
L7:
	.dbline 19
L4:
	.dbline 13
	rjmp L3
X0:
	.dbline -2
L2:
	.dbline 0 ; func end
	ret
	.dbsym r i 20 c
	.dbend