onekey.s

protues_atmeg8学习之：按键篇源代码

	.module OneKey.C
	.area text(rom, con, rel)
	.dbfile F:\Learn\AVR\Pro_Mega8\KEY\OneKey/Delay.h
	.dbfunc e delay_1ms _delay_1ms fV
;              i -> R16,R17
	.even
_delay_1ms::
	.dbline -1
	.dbline 3
; /******************************************/
; //文件名：Int0.c
; //功能： 外部中断的应用
	.dbline 5
; //作者:  young
; //时间： 2006.10.1
	ldi R16,1
	ldi R17,0
	rjmp L5
L2:
	.dbline 6
L3:
	.dbline 5
	subi R16,255  ; offset = 1
	sbci R17,255
L5:
	.dbline 5
	cpi R16,118
	ldi R30,4
	cpc R17,R30
	brlo L2
	.dbline -2
	.dbline 7
; //目标MCU:ATmega8   
; //晶振:  8MHZ
L1:
	.dbline 0 ; func end
	ret
	.dbsym r i 16 i
	.dbend
	.dbfunc e delay_ms _delay_ms fV
;              i -> R20,R21
;              n -> R22,R23
	.even
_delay_ms::
	rcall push_gset2
	movw R22,R16
	.dbline -1
	.dbline 11
; /******************************************/
; #include <iom8v.h>
; //#include <macros.h>
; #include "Delay.h"
	.dbline 12
; 
	clr R20
	clr R21
	rjmp L8
L7:
	.dbline 14
	.dbline 15
	rcall _delay_1ms
	.dbline 16
	subi R20,255  ; offset = 1
	sbci R21,255
	.dbline 17
L8:
	.dbline 13
; unsigned char CountNum;   //全局变量，用来计数
	cp R20,R22
	cpc R21,R23
	brlo L7
	.dbline -2
	.dbline 18
; 
; //按键扫描函数
; void ScanKey(void)
; {
;     unsigned char key;	
L6:
	rcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r i 20 i
	.dbsym r n 22 i
	.dbend
	.dbfile F:\Learn\AVR\Pro_Mega8\KEY\OneKey\OneKey.C
	.dbfunc e ScanKey _ScanKey fV
;            key -> R20
	.even
_ScanKey::
	rcall push_gset2
	.dbline -1
	.dbline 17
	.dbline 19
; 	key=PINC;
	in R20,0x13
	.dbline 20
;     if(1==key&0x01)	
	cpi R20,1
	brne L13
	ldi R22,1
	ldi R23,0
	rjmp L14
L13:
	clr R22
	clr R23
L14:
	sbrs R22,0
	rjmp L11
	.dbline 21
; 	    return;	
	rjmp L10
L11:
	.dbline 22
; 	delay_ms(10);
	ldi R16,10
	ldi R17,0
	rcall _delay_ms
	.dbline 24
; 		
; 	key=PINC;
	in R20,0x13
	.dbline 25
; 	if(1==key&0x01)	
	cpi R20,1
	brne L17
	ldi R22,1
	ldi R23,0
	rjmp L18
L17:
	clr R22
	clr R23
L18:
	sbrs R22,0
	rjmp L15
	.dbline 26
; 	    return;
	rjmp L10
L15:
	.dbline 27
; 	CountNum++;
	lds R24,_CountNum
	subi R24,255    ; addi 1
	sts _CountNum,R24
	rjmp L20
L19:
	.dbline 29
	in R20,0x13
L20:
	.dbline 28
; 	while(0==key&0x01)	
	tst R20
	brne L22
	ldi R22,1
	ldi R23,0
	rjmp L23
L22:
	clr R22
	clr R23
L23:
	sbrc R22,0
	rjmp L19
	.dbline -2
	.dbline 30
; 	    key=PINC;	
; }
L10:
	rcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r key 20 c
	.dbend
	.area lit(rom, con, rel)
L25:
	.byte 63,6
	.byte 91,'O
	.byte 'f,'m
	.byte 125,7
	.byte 127,'o
	.area text(rom, con, rel)
	.dbfile F:\Learn\AVR\Pro_Mega8\KEY\OneKey\OneKey.C
	.dbfunc e main _main fV
;           temp -> <dead>
;            num -> y+0
	.even
_main::
	sbiw R28,10
	.dbline -1
	.dbline 34
; 
; //主函数，显示数据时先关中断，然后再打开
; void main()
; {
	.dbline 36
; 	unsigned char temp;
; 	unsigned char num[10]={0x3F, 0x06, 0x5B, 0x4F, 0x66, 
	ldi R24,<L25
	ldi R25,>L25
	movw R30,R28
	ldi R16,10
	ldi R17,0
	st -y,R31
	st -y,R30
	st -y,R25
	st -y,R24
	rcall asgncblk
	.dbline 39
; 	                       0x6D, 0x7D, 0x07, 0x7F, 0x6F};
; 	//初始化端口
; 	DDRB=0xFF;	  //设置B口为输出模式
	ldi R24,255
	out 0x17,R24
	.dbline 40
; 	PORTB=0xFF;	  //置高电平
	out 0x18,R24
	.dbline 41
; 	DDRC=0x00;
	clr R2
	out 0x14,R2
	.dbline 44
; 	//PORTC=0xFF;	    	
; 	
; 	CountNum=0;   //初始化全局变量	
	sts _CountNum,R2
	rjmp L27
L26:
	.dbline 46
; 	while (1)
; 	{	
	.dbline 47
; 	    ScanKey();//扫描按键
	rcall _ScanKey
	.dbline 48
; 		if(CountNum>=10)
	lds R24,_CountNum
	cpi R24,10
	brlo L29
	.dbline 49
; 		    CountNum-=10;        			
	subi R24,10
	sts _CountNum,R24
L29:
	.dbline 50
	movw R24,R28
	lds R30,_CountNum
	clr R31
	add R30,R24
	adc R31,R25
	ldd R2,z+0
	out 0x18,R2
	.dbline 51
L27:
	.dbline 45
	rjmp L26
X0:
	.dbline -2
	.dbline 52
; 		PORTB=num[CountNum];		
;      }
; }
L24:
	adiw R28,10
	.dbline 0 ; func end
	ret
	.dbsym l temp 1 c
	.dbsym l num 0 A[10:10]c
	.dbend
	.area bss(ram, con, rel)
	.dbfile F:\Learn\AVR\Pro_Mega8\KEY\OneKey\OneKey.C
_CountNum::
	.blkb 1
	.dbsym e CountNum _CountNum c