2.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 _2.c
	.area text(rom, con, rel)
	.dbfile D:\xij\demo\demo_diy02-8a\1\C语言\02-8A-2\2.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 4
; #include	"iom48v.h"
; 
; void		port_init()
; {
	.dbline 5
;  PORTC=0XFF;DDRC=0XFF;//设置PC为输出
	ldi R24,255
	out 0x8,R24
	.dbline 5
	out 0x7,R24
	.dbline 6
;  PORTB=0XFF;DDRB=0XFE;//设置PB0输入，其它输出
	out 0x5,R24
	.dbline 6
	ldi R24,254
	out 0x4,R24
	.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=PINB&0x01;   		  //读出PB0口状态
	in R20,0x3
	andi R20,1
	.dbline 15
;  if(i==0)
	brne L6
	.dbline 16
;  	 PORTC=0xfE;
	ldi R24,254
	out 0x8,R24
	rjmp L7
L6:
	.dbline 18
;  else
;  	 PORTC=0XFF; 
	ldi R24,255
	out 0x8,R24
L7:
	.dbline 19
L4:
	.dbline 13
	rjmp L3
X0:
	.dbline -2
L2:
	.dbline 0 ; func end
	ret
	.dbsym r i 20 c
	.dbend