timer.s

MCU：ATMEGA8515 Frequence: 16M 描述：利用已有CAN TEST V1.0电路板进行调试, 可靠性测试已通过

	.module Timer.c
	.area vector(rom, abs)
	.org 14
	rjmp _Timer0OverInter
	.area data(ram, con, rel)
_LightCount::
	.blkb 2
	.area idata
	.word 0
	.area data(ram, con, rel)
	.dbfile E:\罗鹏\工作资料\工作记录\CAN\程序\完成版本\Timer.c
	.dbsym e LightCount _LightCount i
_KeyTime::
	.blkb 1
	.area idata
	.byte 0
	.area data(ram, con, rel)
	.dbfile E:\罗鹏\工作资料\工作记录\CAN\程序\完成版本\Timer.c
	.dbsym e KeyTime _KeyTime c
_KeyStatus::
	.blkb 1
	.area idata
	.byte 0
	.area data(ram, con, rel)
	.dbfile E:\罗鹏\工作资料\工作记录\CAN\程序\完成版本\Timer.c
	.dbsym e KeyStatus _KeyStatus c
	.area text(rom, con, rel)
	.dbfile E:\罗鹏\工作资料\工作记录\CAN\程序\完成版本\Timer.c
	.dbfunc e KeyInput _KeyInput fc
;        KeyData -> R20
;        BitData -> R20
	.even
_KeyInput::
	rcall push_gset1
	mov R20,R16
	.dbline -1
	.dbline 15
; #include "iom8515v.h"
; #include "macros.h"
; #include "MAIN.h"
; 
; 
; #pragma interrupt_handler Timer0OverInter:8
; uint LightCount=0;
; uchar KeyTime=0;
; uchar Key1,Key2,Key3;
; uchar KeyStatus=0;
; /*****************************************
;            读按键输入口子程序
; ******************************************/
; uchar  KeyInput(uchar BitData)
; {
	.dbline 17
;     uchar KeyData;
; 	KeyData=(PIND &= (1 << BitData ));
	ldi R16,1
	mov R17,R20
	rcall lsl8
	in R2,0x10
	and R2,R16
	out 0x10,R2
	mov R20,R2
	.dbline 18
; 	if(KeyData == 0)
	tst R2
	brne L2
	.dbline 19
; 	return(1);
	ldi R16,1
	rjmp L1
L2:
	.dbline 21
; 	else
; 	return(0);
	clr R16
	.dbline -2
L1:
	rcall pop_gset1
	.dbline 0 ; func end
	ret
	.dbsym r KeyData 20 c
	.dbsym r BitData 20 c
	.dbend
	.dbfunc e Timer0Ini _Timer0Ini fV
	.even
_Timer0Ini::
	.dbline -1
	.dbline 25
; }
; 
; void Timer0Ini(void) 
; {
	.dbline 26
;    TCCR0 = 0x00; 
	clr R2
	out 0x33,R2
	.dbline 27
;    TCNT0 = 0xC2; //定时1ms
	ldi R24,194
	out 0x32,R24
	.dbline 28
;    TCCR0 = 0x04; //256分频
	ldi R24,4
	out 0x33,R24
	.dbline 29
;    TIMSK = 0x02; //开定时器0溢出中断	  
	ldi R24,2
	out 0x39,R24
	.dbline -2
L4:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e Timer0OverInter _Timer0OverInter fV
	.even
_Timer0OverInter::
	st -y,R2
	st -y,R3
	st -y,R24
	st -y,R25
	st -y,R30
	in R2,0x3f
	st -y,R2
	.dbline -1
	.dbline 33
; }
; 
; void Timer0OverInter(void)
; {
	.dbline 34
;    TCNT0 = 0xC2; //恢复定时器初值
	ldi R24,194
	out 0x32,R24
	.dbline 35
;    KeyTime++;	 //按键间隔时间计数器累加
	lds R24,_KeyTime
	subi R24,255    ; addi 1
	sts _KeyTime,R24
	.dbline 36
;    LightCount++;
	lds R24,_LightCount
	lds R25,_LightCount+1
	adiw R24,1
	sts _LightCount+1,R25
	sts _LightCount,R24
	.dbline 37
;    if(KeyTime == 6)	   	  	   	//取6ms的时间间隔
	lds R24,_KeyTime
	cpi R24,6
	brne L6
	.dbline 38
;    {
	.dbline 39
;       KeyTime=0;
	clr R2
	sts _KeyTime,R2
	.dbline 40
; 	  if((Key1 == 0) && (Key2 == 1) && (Key3 == 1))  
	lds R2,_Key1
	tst R2
	brne L8
	lds R24,_Key2
	cpi R24,1
	brne L8
	lds R24,_Key3
	cpi R24,1
	brne L8
	.dbline 42
; 	  //如果按键的前后三次状态分别是0、1、1的话，则认为有键按下
; 	  KeyStatus=1;		//置位状态标志								  
	ldi R24,1
	sts _KeyStatus,R24
	rjmp L9
L8:
	.dbline 44
; 	  else 
; 	  KeyStatus=0;        //否则清0状态标志
	clr R2
	sts _KeyStatus,R2
L9:
	.dbline 45
; 	  Key1=Key2;
	lds R2,_Key2
	sts _Key1,R2
	.dbline 46
; 	  Key2=Key3;
	lds R2,_Key3
	sts _Key2,R2
	.dbline 47
;    }
L6:
	.dbline 58
	lds R24,_LightCount
	lds R25,_LightCount+1
	cpi R24,232
	ldi R30,3
	cpc R25,R30
	brne L10
	.dbline 59
	.dbline 60
	ldi R24,16
	in R2,0x12
	eor R2,R24
	out 0x12,R2
	.dbline 61
	clr R2
	clr R3
	sts _LightCount+1,R3
	sts _LightCount,R2
	.dbline 62
L10:
	.dbline -2
L5:
	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
	.area bss(ram, con, rel)
	.dbfile E:\罗鹏\工作资料\工作记录\CAN\程序\完成版本\Timer.c
_Key3::
	.blkb 1
	.dbsym e Key3 _Key3 c
_Key2::
	.blkb 1
	.dbsym e Key2 _Key2 c
_Key1::
	.blkb 1
	.dbsym e Key1 _Key1 c