main.s

avr32 驱动320X64 LCD 屏代码。 对液晶驱动或学习avr的朋友有帮助。

	.module main.c
	.area text(rom, con, rel)
	.dbfile D:\AVR\Mega32_160X64Lcd\main.c
	.dbfunc e port_init _port_init fV
	.even
_port_init::
	.dbline -1
	.dbline 10
; //ICC-AVR application builder : 2006-12-29 13:02:24
; // Target : M32
; // Crystal: 7.3728Mhz
; 
; #include "define.h"
; 
; extern void Init_Lcd(void) ;
; 
; void port_init(void)
; {
	.dbline 11
;  PORTA = 0x00;
	clr R2
	out 0x1b,R2
	.dbline 12
;  DDRA  = 0xFF;
	ldi R24,255
	out 0x1a,R24
	.dbline 13
;  PORTB = 0x07;
	ldi R24,7
	out 0x18,R24
	.dbline 14
;  DDRB  = 0xF8;
	ldi R24,248
	out 0x17,R24
	.dbline 15
;  PORTC = 0xFF; 
	ldi R24,255
	out 0x15,R24
	.dbline 16
;  DDRC  = 0x00;
	out 0x14,R2
	.dbline 17
;  PORTD = 0x7F;
	ldi R24,127
	out 0x12,R24
	.dbline 18
;  DDRD  = 0x80;
	ldi R24,128
	out 0x11,R24
	.dbline -2
	.dbline 19
; }
L1:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e watchdog_init _watchdog_init fV
	.even
_watchdog_init::
	.dbline -1
	.dbline 24
; 
; //Watchdog initialisation
; // prescale: 2048K cycles
; void watchdog_init(void)
; {
	.dbline 25
;  WDR(); //this prevents a timout on enabling
	wdr
	.dbline 26
;  WDTCR = 0x0F; //WATCHDOG ENABLED - dont forget to issue WDRs
	ldi R24,15
	out 0x21,R24
	.dbline -2
	.dbline 27
; }
L2:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e timer0_init _timer0_init fV
	.even
_timer0_init::
	.dbline -1
	.dbline 34
; 
; //TIMER0 initialisation - prescale:1024
; // WGM: Normal
; // desired value: 100Hz
; // actual value: 101.408Hz (1.4%)
; void timer0_init(void)
; {
	.dbline 35
;  TCCR0 = 0x00; //stop
	clr R2
	out 0x33,R2
	.dbline 36
;  TCNT0 = 0xB9; //set count
	ldi R24,185
	out 0x32,R24
	.dbline 37
;  OCR0  = 0x47;  //set compare
	ldi R24,71
	out 0x3c,R24
	.dbline 38
;  TCCR0 = 0x05; //start timer
	ldi R24,5
	out 0x33,R24
	.dbline -2
	.dbline 39
; }
L3:
	.dbline 0 ; func end
	ret
	.dbend
	.area vector(rom, abs)
	.org 44
	jmp _timer0_ovf_isr
	.area text(rom, con, rel)
	.dbfile D:\AVR\Mega32_160X64Lcd\main.c
	.dbfunc e timer0_ovf_isr _timer0_ovf_isr fV
	.even
_timer0_ovf_isr::
	st -y,R24
	in R24,0x3f
	st -y,R24
	.dbline -1
	.dbline 43
; 
; #pragma interrupt_handler timer0_ovf_isr:12
; void timer0_ovf_isr(void)
; {
	.dbline 44
;  TCNT0 = 0xB9; //reload counter value
	ldi R24,185
	out 0x32,R24
	.dbline -2
	.dbline 45
; }
L4:
	ld R24,y+
	out 0x3f,R24
	ld R24,y+
	.dbline 0 ; func end
	reti
	.dbend
	.dbfunc e uart0_init _uart0_init fV
	.even
_uart0_init::
	.dbline -1
	.dbline 53
; 
; //UART0 initialisation
; // desired baud rate: 38400
; // actual: baud rate:38400 (0.0%)
; // char size: 8 bit
; // parity: Disabled
; void uart0_init(void)
; {
	.dbline 54
;  UCSRB = 0x00; //disable while setting baud rate
	clr R2
	out 0xa,R2
	.dbline 55
;  UCSRA = 0x00;
	out 0xb,R2
	.dbline 56
;  UCSRC = 0x06;
	ldi R24,6
	out 0x20,R24
	.dbline 57
;  UBRRL = 0x0B; //set baud rate lo
	ldi R24,11
	out 0x9,R24
	.dbline 58
;  UBRRH = 0x00; //set baud rate hi
	out 0x20,R2
	.dbline 59
;  UCSRB = 0xB0;
	ldi R24,176
	out 0xa,R24
	.dbline -2
	.dbline 60
; }
L5:
	.dbline 0 ; func end
	ret
	.dbend
	.area vector(rom, abs)
	.org 52
	jmp _uart0_rx_isr
	.area text(rom, con, rel)
	.dbfile D:\AVR\Mega32_160X64Lcd\main.c
	.dbfunc e uart0_rx_isr _uart0_rx_isr fV
	.even
_uart0_rx_isr::
	.dbline -1
	.dbline 64
; 
; #pragma interrupt_handler uart0_rx_isr:14
; void uart0_rx_isr(void)
; {
	.dbline -2
	.dbline 66
;  //uart has received a character in UDR
; }
L6:
	.dbline 0 ; func end
	reti
	.dbend
	.area vector(rom, abs)
	.org 56
	jmp _uart0_udre_isr
	.area text(rom, con, rel)
	.dbfile D:\AVR\Mega32_160X64Lcd\main.c
	.dbfunc e uart0_udre_isr _uart0_udre_isr fV
	.even
_uart0_udre_isr::
	.dbline -1
	.dbline 69
; #pragma interrupt_handler uart0_udre_isr:15
; void uart0_udre_isr(void)
; {
	.dbline -2
	.dbline 71
;  //character transferred to shift register so UDR is now empty
; }
L7:
	.dbline 0 ; func end
	reti
	.dbend
	.area vector(rom, abs)
	.org 8
	jmp _int1_isr
	.area text(rom, con, rel)
	.dbfile D:\AVR\Mega32_160X64Lcd\main.c
	.dbfunc e int1_isr _int1_isr fV
	.even
_int1_isr::
	.dbline -1
	.dbline 75
; 
; #pragma interrupt_handler int1_isr:3
; void int1_isr(void)
; {
	.dbline -2
	.dbline 77
;  //external interupt on INT1
; }
L8:
	.dbline 0 ; func end
	reti
	.dbend
	.dbfunc e init_devices _init_devices fV
	.even
_init_devices::
	.dbline -1
	.dbline 81
; 
; //call this routine to initialise all peripherals
; void init_devices(void)
; {
	.dbline 83
;  //stop errant interrupts until set up
;  CLI(); //disable all interrupts
	cli
	.dbline 84
;  port_init();
	xcall _port_init
	.dbline 85
;  watchdog_init();
	xcall _watchdog_init
	.dbline 86
;  timer0_init();
	xcall _timer0_init
	.dbline 87
;  uart0_init();
	xcall _uart0_init
	.dbline 89
; 
;  MCUCR = 0x08;
	ldi R24,8
	out 0x35,R24
	.dbline 90
;  GICR  = 0x80;
	ldi R24,128
	out 0x3b,R24
	.dbline 91
;  TIMSK = 0x01; //timer interrupt sources
	ldi R24,1
	out 0x39,R24
	.dbline 92
;  SEI(); //re-enable interrupts
	sei
	.dbline -2
	.dbline 94
;  //all peripherals are now initialised
; }
L9:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e main _main fV
	.even
_main::
	.dbline -1
	.dbline 97
; 
; void main(void)
; {
	.dbline 98
;  init_devices();
	xcall _init_devices
	.dbline 99
;  Init_Lcd();
	.dbline -2
	.dbline 100
; }
L10:
	.dbline 0 ; func end
	xjmp _Init_Lcd
	.dbend