基于stc15f2k60s2芯片单片机编程（计算器，不完美）

用矩阵写了一个计算器，目前计算偶尔出问题，还不完善
计算器实例
7 8 9 +
4 5 6 -
1 2 3 *
0 = /

main.c文件

#include 
#include 


extern unsigned char display[];
extern unsigned char key;

void Timer0Init();


void main()
{

	Timer0Init();EA=1;ET0=1;
	P2=0XA0;P0=0X00;P2=0X1f;

	while(1)
	{	
		anjian();
	xianshi();
	jisuan();
	
	}
}



void Timer0Init(void)		//2毫秒@11.0592MHz
{
	AUXR |= 0x80;		//定时器时钟1T模式
	TMOD &= 0xF0;		//设置定时器模式
	TL0 = 0x9A;		//设置定时初值
	TH0 = 0xA9;		//设置定时初值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0开始计时
}
void shuma() interrupt 1
{
	unsigned char i;
	
	P2=0XE0;
	P0=0XFF;
	P2=0X1f;
	
	P2=0XC0;
	P0=1<<i;
	P2=0X1f;
	
	P2=0XE0;
	P0=display[i];
	P2=0X1f;
	
	i++;
	if(i>=8)i=0;

}

juzhen,c文件

#include 
#include 
unsigned char display[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
unsigned char smg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
char jieguo,qian,hou;
unsigned char suan;
sbit h1=P3^0;
sbit h2=P3^1;
sbit h3=P3^2;
sbit h4=P3^3;
unsigned char key;
int i=-1;
sbit l1=P4^4;
sbit l2=P4^2;
sbit l3=P3^5;
sbit l4=P3^4;

void xianshi()
{
	if(i==-1)
	{
		display[0]=display[1]=0xbf;
	}
	if(i==0)
	{
		display[0]=smg[qian/10];
		display[1]=smg[qian%10];
		display[2]=0xff;
		display[3]=0xff;
		display[4]=0xff;
		display[5]=0xff;
		display[6]=0xff;
		display[7]=0xff;		
	}
		
	
	
	if(i==1)
	{
		display[0]=smg[hou/10];
		display[1]=smg[hou%10];
		display[2]=0xff;
		display[3]=0xff;
		display[4]=0xff;
		display[5]=0xff;
		display[6]=0xff;
		display[7]=0xff;		
	}


	if(i==2)
	{
			display[0]=smg[jieguo/10];
			display[1]=smg[jieguo%10];
			display[2]=0xff;
			display[3]=0xff;
			display[4]=0xff;
			display[5]=0xff;
			display[6]=0xff;
			display[7]=0xff;	
	}
	
	
}

/**********************

				7	8	9	+
				4	5	6	-
				1	2	3	*
				0		=	/



**********************/


void jisuan()
{
	if(i==0){qian=key;}
	if(i==1){hou=key;}
	if(i>=3)i=0;
	if(suan==1)
	{
		jieguo=qian+hou;
	}
	
	if(suan==2)
	{
		jieguo=qian-hou;
	}
	if(suan==3)
	{
		jieguo=qian*hou;
	}
	
	if(suan==4)
	{
		jieguo=qian/hou;
	}
}


void anjian()
{
	l1=0;
	l4=l2=l3=1;
	h1=h2=h3=h4=1;
	
	if(h1==0)
	{
	Delay10ms();
		if(h1==0)
		{key=7;i++;}
		while(!h1);
	}
	
	if(h2==0)
	{
	Delay10ms();
		if(h2==0)
		{key=4;i++;}
		while(!h2);
	}

		if(h3==0)
	{
	Delay10ms();
		if(h3==0)
		{key=1;i++;}
		while(!h3);
	}
	
		if(h4==0)
	{
	Delay10ms();
		if(h4==0)
		{key=0;i++;}
		while(!h4);
	}
	

	l2=0;
	l3=l1=l4=1;
	h1=h2=h3=h4=1;
	
	if(h1==0)
	{
	Delay10ms();
		if(h1==0)
		{key=8;i++;}
		while(!h1);
	}
	
	if(h2==0)
	{
	Delay10ms();
		if(h2==0)
		{key=5;i++;}
		while(!h2);
	}

		if(h3==0)
	{
	Delay10ms();
		if(h3==0)
		{key=2;i++;}
		while(!h3);
	}
	
//		if(h4==0)
//	{
//	Delay10ms();
//		if(h4==0)
//		{key=9;}
//		while(!h4);
//	}	

	
	l3=0;
	l1=l2=l4=1;
	h1=h2=h3=h4=1;
	
	if(h1==0)
	{
	Delay10ms();
		if(h1==0)
		{key=9;i++;}
		while(!h1);
	}
	
	if(h2==0)
	{
	Delay10ms();
		if(h2==0)
		{key=6;i++;}
		while(!h2);
	}

		if(h3==0)
	{
	Delay10ms();
		if(h3==0)
		{key=3;i++;}
		while(!h3);
	}
	
		if(h4==0)
	{
	Delay10ms();
		if(h4==0)
		{i=2;}
		while(!h4);
	}		


	l4=0;
	l1=l2=l3=1;
	h1=h2=h3=h4=1;
	
	if(h1==0)
	{
	Delay10ms();
		if(h1==0)
		{suan=1;}
		while(!h1);
	}
	
	if(h2==0)
	{
	Delay10ms();
		if(h2==0)
		{suan=2;}
		while(!h2);
	}

		if(h3==0)
	{
	Delay10ms();
		if(h3==0)
		{suan=3;}
		while(!h3);
	}
	
		if(h4==0)
	{
	Delay10ms();
		if(h4==0)
		{suan=4;}
		while(!h4);
	}	
	
}



void Delay10ms()		//@11.0592MHz
{
	unsigned char i, j;

	i = 108;
	j = 145;
	do
	{
		while (--j);
	} while (--i);
}

juzhen,h

#ifndef __JUZHEN_H_
#define __JUZHEN_H_



void Delay10ms();
void anjian();
void xianshi();
void jisuan();








#endif