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\点阵\init.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 9
; //ICC-AVR application builder : 2006-4-27 14:09:59
; // 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  = 0x00;
	out 0x1a,R2
	.dbline 12
;  PORTB = 0x00;
	out 0x18,R2
	.dbline 13
;  DDRB  = 0xBF;
	ldi R24,191
	out 0x17,R24
	.dbline 14
;  PORTC = 0x00;
	out 0x15,R2
	.dbline 15
;  DDRC  = 0x00;
	out 0x14,R2
	.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 spi_init _spi_init fV
	.even
_spi_init::
	.dbline -1
	.dbline 25
; }
; 
; //SPI initialize
; // clock rate: 5529498hz
; void spi_init(void)
; {
	.dbline 26
;  SPCR = 0xFC; //setup SPI
	ldi R24,252
	out 0xd,R24
	.dbline -2
L2:
	.dbline 0 ; func end
	ret
	.dbend
	.area vector(rom, abs)
	.org 16
	rjmp _spi_stc_isr
	.area text(rom, con, rel)
	.dbfile C:\ATMega8515\点阵\init.c
	.dbfunc e spi_stc_isr _spi_stc_isr fV
	.even
_spi_stc_isr::
	st -y,R2
	st -y,R24
	in R2,0x3f
	st -y,R2
	.dbline -1
	.dbline 31
; }
; 
; #pragma interrupt_handler spi_stc_isr:9
; void spi_stc_isr(void)
; {
	.dbline 33
;  //byte in SPDR has been sent/received
;  PORTB^=0x10;
	ldi R24,16
	in R2,0x18
	eor R2,R24
	out 0x18,R2
	.dbline 34
;  PORTB^=0x10;
	in R2,0x18
	eor R2,R24
	out 0x18,R2
	.dbline -2
L3:
	ld R2,y+
	out 0x3f,R2
	ld R24,y+
	ld R2,y+
	.dbline 0 ; func end
	reti
	.dbend
	.dbfunc e init_devices _init_devices fV
	.even
_init_devices::
	.dbline -1
	.dbline 39
; }
; 
; //call this routine to initialize all peripherals
; void init_devices(void)
; {
	.dbline 41
;  //stop errant interrupts until set up
;  CLI(); //disable all interrupts
	cli
	.dbline 42
;  port_init();
	rcall _port_init
	.dbline 43
;  spi_init();
	rcall _spi_init
	.dbline 45
; 
;  MCUCR = 0x00;
	clr R2
	out 0x35,R2
	.dbline 46
;  EMCUCR = 0x00;
	out 0x36,R2
	.dbline 47
;  GICR = 0x00;
	out 0x3b,R2
	.dbline 48
;  TIMSK = 0x00;
	out 0x39,R2
	.dbline 49
;  SEI(); //re-enable interrupts
	sei
	.dbline -2
L4:
	.dbline 0 ; func end
	ret
	.dbend