mainkey0-ok.c

发动机控制

//说明：
//在P10和P11输入信号后，在P12上输出预定波形

#include <reg51.h>
#include <stdio.h> 
#include <intrins.h>
#include <absacc.h>

#define UINT unsigned int 
#define UCHAR unsigned char
                               //8155地址 宏定义
#define P8155CW 0x0200         //控制字地址
#define P8155IA 0x0201         //A口
#define P8155IB 0x0202         //B口
#define P8155IC 0x0203         //C口

UCHAR   keynum;

#define  SI_HSEC   0x01           //节拍信号
#define  SI_WIDTH   0x08          //模拟喷油脉冲宽度
UCHAR    TSignal;                 //半秒信号

UCHAR FireSignal;       //点火信号当前标志
UCHAR lastFireSignal;   //点火信号前1ms标志

UCHAR OilSignal;       //喷油信号当前标志
UCHAR lastOilSignal;   //喷油信号前1ms标志

sbit testLed=P1^5;       //模拟尖脉冲点火信号
sbit simLed=P1^6;        //模拟喷油信号

sbit keyLed=P1^0;
sbit OutSignal=P1^2;     //输出断口
sbit oilLed=P1^4;        //喷油信号高
sbit fireLed=P1^3;       //点火信号为高
sbit runLed=P1^7;        //程序正常标志

UINT timeFireSignal;     //点火信号周期（0.1ms单位）
UINT timeOilSignal;      //喷油信号宽度（0.1ms单位）

UINT outTimeFire,outTimeDelay;       //输出点火时间
UINT inputAngle,keyAngle,tkAngle;                     //当前角度/键盘输入角度
UCHAR  keydown;

static UINT time0Count,time0Count1,time0Count2,time0Key;   //计数器
volatile UINT base,i;                                      // 基本定时单元

UCHAR outSignalStart;   //输出信号开始标志

void  firePrev();       //点火信号处理
void  oilPrev();        //喷油信号处理
void  outPrev();        //输出信号处理
void  keyPrev();        //键盘处理
//--------------------------------------------------------------------------
// 变量初始化子程序
//--------------------------------------------------------------------------
void init()
{
	inputAngle = 60;	
	timeOilSignal = 0;
	outTimeFire = 0;
	time0Count = 0;
	time0Count1 = 0;
	time0Count2 = 0;
	time0Key = 0;
	keydown = 0;
	
	OilSignal = 0;
	lastOilSignal = 0;
	FireSignal = 0;
	lastFireSignal = 0;
	
	outSignalStart =0x00;
	outTimeDelay = 0xFFFF;
}
//--------------------------------------------------------------------------
// 系统初始化，初始化寄存器
//--------------------------------------------------------------------------
void initsys()
{	
        EA = 1;
        ET0 = 1;
        ET1 = 1;
        PT1 = 1;
	TMOD = 0x11;                  //T0工作方式1，计时1ms
	TH0=0xFE;
	TL0=0x0C;
	TR0 = 1;                     //启动T0;
	TH1=0xFF;
	TL1=0xFE;
	TR1 = 0;                     //启动T1;
	//中断1
	IT1=1;                       //负跳变触发
	EX1=1;                       //外中断1允许
	
	//P1 = 0;
	fireLed = 0;
	oilLed = 0;
	OutSignal = 1;
	//8155 INIT
	XBYTE[P8155CW] = 0x43;
}
//--------------------------------------------------------------------------
// 主程序
//--------------------------------------------------------------------------
void main(void)
{   
   
   init();
   initsys();
   while(1){            
   //	firePrev(); //处理点火信号
   //	oilPrev();  //处理喷油信号
   	outPrev();  //输出信号处理
        if(TSignal&SI_HSEC)          // 半秒消息信号
    	{
           TSignal&=~SI_HSEC;	     // 清除半秒消息信号标志
           runLed = !runLed;         // 指示灯
    	}
    	keyPrev();  //键盘处理
   }
}
//--------------------------------------------------------------------------
// 中断1子程序
//--------------------------------------------------------------------------
void intersvr1(void) interrupt 2 using 1
{
       FireSignal=0xFF;
}
//--------------------------------------------------------------------------
// T1中断子程序
//--------------------------------------------------------------------------
void time1(void) interrupt 3 using 1
{	
	OutSignal = 1;
	TR1 = 0;
}
//--------------------------------------------------------------------------
// T0中断子程序
//--------------------------------------------------------------------------
void time0(void) interrupt 1 using 1
{
     TH0=0xFE;
     TL0=0x0C;
     time0Count++;          //点火信号周期计数
     time0Key++;
     
     time0Count1++;         //喷油脉冲宽度计数
     time0Count2++;         //输出信号延时计数

     //喷油信号检测
     if( (P1&0x02) == 0x02){
     	OilSignal = 0xFF;
        if(lastOilSignal!=0xFF){ //喷油信号下降沿
	    time0Count1=0;
	}
     }else{
        OilSignal=0x00;
        if(lastOilSignal==0xFF){ //喷油信号上升沿
	    timeOilSignal = time0Count1;
	    outTimeDelay = outTimeFire;
	    time0Count2 = 0;
	    outSignalStart = 0xFF;
	}
     }
     lastOilSignal = OilSignal;
     
     if(++base==800){      //0.4秒信号
     	base = 0;
     	TSignal|=SI_HSEC;
     	}
    
     //产生模拟输入信号
     if(base%200==0) 
        testLed = 0;
     else
        testLed = 1;
     
     if(base>402&&base<402+SI_WIDTH){
     	simLed = 1;
     }else if(base>2&&base<2+SI_WIDTH){
     	simLed = 1;
     }else
        simLed = 0;   
}
//--------------------------------------------------------------------------
//点火信号处理
//--------------------------------------------------------------------------
void  firePrev()
{
	if(FireSignal==0xFF)      //点火信号到
    	{
   	   	fireLed = 1;
   	   	timeFireSignal = time0Count;  //记录
      	        time0Count = 0;               //清零     
      	        outTimeFire = timeFireSignal*25;
      	        timeFireSignal = outTimeFire/3;
      	        outTimeFire = timeFireSignal*inputAngle;
      	        timeFireSignal = outTimeFire/6;
      	        outTimeFire = timeFireSignal/500;
      	}
      	FireSignal = 0x00;
      	fireLed = 0;
}
//--------------------------------------------------------------------------
//喷油信号处理
//--------------------------------------------------------------------------
void  oilPrev()
{
/*	if(OilSignal==0xFF){         //喷油信号为高电平
	    if(lastOilSignal!=0xFF){ //喷油信号下降沿
	    time0Count1=0;
	    }
	    oilLed = 0;
	}else{
	    if(lastOilSignal==0xFF){ //喷油信号上升沿
	    if(time0Count1<30)
	    	timeOilSignal = time0Count1;
	    outTimeDelay = outTimeFire;
	    time0Count2 = 0;
	    outSignalStart = 0xFF;
	    }
	    oilLed = 1;
	}
	lastOilSignal = OilSignal;*/
}
//--------------------------------------------------------------------------
//输出信号处理
//--------------------------------------------------------------------------
void  outPrev()
{
	if(outSignalStart==0xFF){
           if(time0Count2>outTimeDelay)
           {
         //  	EA = 0;
           	TH1 = (0xFFFF-timeOilSignal*500)/256;
           	TL1 = (0xFFFF-timeOilSignal*500)%256;
           	TR1 = 1;
           	OutSignal = 0;                        //置输出为低电平
           	time0Count2 = 0;                      //计数器清零
           	outSignalStart = 0x00;
           }
	}else{
	   if(time0Count2>timeOilSignal){
           	TR1 = 0;
           	OutSignal = 1;
           	time0Count2 = 0;
           }
	}
}
//--------------------------------------------------------------------------
//键盘处理
//--------------------------------------------------------------------------
void  keyPrev()
{	
	XBYTE[P8155IA] = 0xFF;
    	keynum = ~XBYTE[P8155IC];
    	
    	if((keynum&0x01) == 0x01){
    	 //  keyLed = 1;   //下8
    	   keydown = 1;
    	}else if((keynum&0x02) == 0x02){
    	   runLed = 1;   //上8
    	   
    	   XBYTE[P8155IA] = 0xFE;
    	   keynum = XBYTE[P8155IC];
    	   
    	   if( (keynum&0x02) == 0x02)
    	      keyLed = 1;
    	}else{
    	   keyLed = 0;
    	   time0Key = 0;
    	   keydown = 0;
    	   fireLed = 0;
    	}
}