init.s

avr单片机与flash存储器通信程序,调试通过,希望对大家有所帮助.

	.module init.c
	.area text(rom, con, rel)
	.dbfile C:\ATMega8515\定时实验\init.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 9
; //ICC-AVR application builder : 2006-4-27 19:45:18
; // Target : M8515
; // Crystal: 11.059Mhz
; 
; #include <iom8515v.h>
; #include <macros.h>
; 
; void port_init(void)
; {
	.dbline 10
;  PORTA = 0x00;
	clr R2
	out 0x1b,R2
	.dbline 11
;  DDRA  = 0xFF;
	ldi R24,255
	out 0x1a,R24
	.dbline 12
;  PORTB = 0x00;
	out 0x18,R2
	.dbline 13
;  DDRB  = 0x00;
	out 0x17,R2
	.dbline 14
;  PORTC = 0x00;
	out 0x15,R2
	.dbline 15
;  DDRC  = 0xC0;
	ldi R24,192
	out 0x14,R24
	.dbline 16
;  PORTD = 0x00;
	out 0x12,R2
	.dbline 17
;  DDRD  = 0x00; 
	out 0x11,R2
	.dbline 18
;  PORTE = 0x00;
	out 0x7,R2
	.dbline 19
;  DDRE  = 0x00; 
	out 0x6,R2
	.dbline -2
L1:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e timer1_init _timer1_init fV
	.even
_timer1_init::
	.dbline -1
	.dbline 27
; }
; 
; //TIMER1 initialize - prescale:1
; // WGM: 0) Normal, TOP=0xFFFF
; // desired value: 1mSec
; // actual value:  1.000mSec (0.0%)
; void timer1_init(void)
; {
	.dbline 28
;  TCCR1B = 0x00; //stop
	clr R2
	out 0x2e,R2
	.dbline 29
;  TCNT1H = 0xD4; //setup
	ldi R24,212
	out 0x2d,R24
	.dbline 30
;  TCNT1L = 0xCE;
	ldi R24,206
	out 0x2c,R24
	.dbline 31
;  OCR1AH = 0x2B;
	ldi R24,43
	out 0x2b,R24
	.dbline 32
;  OCR1AL = 0x32;
	ldi R24,50
	out 0x2a,R24
	.dbline 33
;  OCR1BH = 0x2B;
	ldi R24,43
	out 0x29,R24
	.dbline 34
;  OCR1BL = 0x32;
	ldi R24,50
	out 0x28,R24
	.dbline 35
;  TCCR1A = 0x00;
	out 0x2f,R2
	.dbline 36
;  TCCR1B = 0x01; //start Timer
	ldi R24,1
	out 0x2e,R24
	.dbline -2
L2:
	.dbline 0 ; func end
	ret
	.dbend
	.area data(ram, con, rel)
	.dbfile C:\ATMega8515\定时实验\init.c
_count::
	.blkb 2
	.area idata
	.word 0
	.area data(ram, con, rel)
	.dbfile C:\ATMega8515\定时实验\init.c
	.dbsym e count _count i
	.area vector(rom, abs)
	.org 12
	rjmp _timer1_ovf_isr
	.area data(ram, con, rel)
	.dbfile C:\ATMega8515\定时实验\init.c
	.area text(rom, con, rel)
	.dbfile C:\ATMega8515\定时实验\init.c
	.dbfunc e timer1_ovf_isr _timer1_ovf_isr fV
	.even
_timer1_ovf_isr::
	st -y,R2
	st -y,R3
	st -y,R24
	st -y,R25
	st -y,R30
	in R2,0x3f
	st -y,R2
	.dbline -1
	.dbline 43
	.dbline 44
	ldi R24,212
	out 0x2d,R24
	.dbline 45
	ldi R24,206
	out 0x2c,R24
	.dbline 47
	lds R2,_count
	lds R3,_count+1
	movw R24,R2
	adiw R24,1
	sts _count+1,R25
	sts _count,R24
	movw R24,R2
	cpi R24,232
	ldi R30,3
	cpc R25,R30
	brne L4
	.dbline 47
	.dbline 47
	clr R2
	clr R3
	sts _count+1,R3
	sts _count,R2
	.dbline 47
	ldi R24,1
	sts _flag,R24
	.dbline 47
L4:
	.dbline -2
L3:
	ld R2,y+
	out 0x3f,R2
	ld R30,y+
	ld R25,y+
	ld R24,y+
	ld R3,y+
	ld R2,y+
	.dbline 0 ; func end
	reti
	.dbend
	.dbfunc e init_devices _init_devices fV
	.even
_init_devices::
	.dbline -1
	.dbline 52
; }
; 
; unsigned int count=0;
; extern unsigned char flag;
; #pragma interrupt_handler timer1_ovf_isr:7
; void timer1_ovf_isr(void)
; {
;  TCNT1H = 0xD4; //reload counter high value
;  TCNT1L = 0xCE; //reload counter low value
;  //计算1000次，一共1S
;  if(count++==1000){count=0;flag=1;}
; }
; 
; //call this routine to initialize all peripherals
; void init_devices(void)
; {
	.dbline 54
;  //stop errant interrupts until set up
;  CLI(); //disable all interrupts
	cli
	.dbline 55
;  port_init();
	rcall _port_init
	.dbline 56
;  timer1_init();
	rcall _timer1_init
	.dbline 58
; 
;  MCUCR = 0x00;
	clr R2
	out 0x35,R2
	.dbline 59
;  EMCUCR = 0x00;
	out 0x36,R2
	.dbline 60
;  GICR = 0x00;
	out 0x3b,R2
	.dbline 61
;  TIMSK = 0x80;
	ldi R24,128
	out 0x39,R24
	.dbline 62
;  SEI(); //re-enable interrupts
	sei
	.dbline -2
L6:
	.dbline 0 ; func end
	ret
	.dbend