main.s

一个关于AVR单片机的例程

	.module main.c
	.area text(rom, con, rel)
	.dbfile C:\DOCUME~1\administrator\桌面\教程\18B20\main.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 11
; // ICC-AVR application builder : 2007-2-14 21:34:00
; // Target : M16
; // Crystal: 7.3728Mhz
; // 18B20 演示程序
; 
; #include "config.h"
; 
; extern unsigned char count;
; 
; void port_init(void)
; {
	.dbline 12
;  PORTA = 0x00;
	clr R2
	out 0x1b,R2
	.dbline 13
;  DDRA  = 0x00;
	out 0x1a,R2
	.dbline 14
;  PORTB = 0x00;
	out 0x18,R2
	.dbline 15
;  DDRB  = 0x00;
	out 0x17,R2
	.dbline 16
;  PORTC = 0x00; //m103 output only
	out 0x15,R2
	.dbline 17
;  DDRC  = 0x00;
	out 0x14,R2
	.dbline 18
;  PORTD = 0x00;
	out 0x12,R2
	.dbline 19
;  DDRD  = 0x00;
	out 0x11,R2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e init_devices _init_devices fV
	.even
_init_devices::
	.dbline -1
	.dbline 24
; }
; 
; //call this routine to initialize all peripherals
; void init_devices(void)
; {
	.dbline 26
;  //stop errant interrupts until set up
;  CLI(); //disable all interrupts
	cli
	.dbline 27
;  port_init();
	xcall _port_init
	.dbline 29
; 
;  MCUCR = 0x00;
	clr R2
	out 0x35,R2
	.dbline 30
;  GICR  = 0x00;
	out 0x3b,R2
	.dbline 31
;  TIMSK = 0x00; //timer interrupt sources
	out 0x39,R2
	.dbline 32
;  SEI(); //re-enable interrupts
	sei
	.dbline -2
L2:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e main _main fV
;          temp1 -> <dead>
	.even
_main::
	.dbline -1
	.dbline 37
;  //all peripherals are now initialized
; }
; 
; void main(void)
; {
	.dbline 39
;  unsigned int temp1;
;  init_devices();
	xcall _init_devices
	xjmp L5
L4:
	.dbline 41
	.dbline 42
	xcall _gettemp
	.dbline 43
	clr R18
	lds R16,_count
	clr R17
	xcall _display
	.dbline 44
L5:
	.dbline 40
	xjmp L4
X0:
	.dbline -2
L3:
	.dbline 0 ; func end
	ret
	.dbsym l temp1 1 i
	.dbend