init.s

AVR单片机对DS3231的读写操作源代码

	.module init.c
	.area text(rom, con, rel)
	.dbfile F:\ouravr\ds3231\init.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 9
; //ICC-AVR application builder : 2006-3-27 13:01:28
; // Target : M16
; // Crystal: 8.0000Mhz
; 
; #include <iom16v.h>
; #include <macros.h>
; 
; void port_init(void)
; {
	.dbline 11
; 
;  PORTA = 0xC0;
	ldi R24,192
	out 0x1b,R24
	.dbline 12
;  DDRA  = 0xC0;
	out 0x1a,R24
	.dbline 13
;  PORTB = 0x00;
	clr R2
	out 0x18,R2
	.dbline 14
;  DDRB  = 0x00;
	out 0x17,R2
	.dbline 15
;  PORTC = 0xFF; //m103 output only
	ldi R24,255
	out 0x15,R24
	.dbline 16
;  DDRC  = 0xFF;
	out 0x14,R24
	.dbline 17
;  PORTD = 0x00;
	out 0x12,R2
	.dbline 18
;  DDRD  = 0x0C;
	ldi R24,12
	out 0x11,R24
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e init_devices _init_devices fV
	.even
_init_devices::
	.dbline -1
	.dbline 23
; }
; 
; //call this routine to initialize all peripherals
; void init_devices(void)
; {
	.dbline 25
;  //stop errant interrupts until set up
;  CLI(); //disable all interrupts
	cli
	.dbline 26
;  port_init();
	rcall _port_init
	.dbline 28
; 
;  MCUCR = 0x00;
	clr R2
	out 0x35,R2
	.dbline 29
;  GICR  = 0x00;
	out 0x3b,R2
	.dbline 30
;  TIMSK = 0x00; //timer interrupt sources
	out 0x39,R2
	.dbline -2
L2:
	.dbline 0 ; func end
	ret
	.dbend