24c02.txt

单片机写的程序都含有Protues仿真结果

#include<reg51.h>
#define uint unsigned int
#define uchar unsigned char
#define wda 0xa0
#define rda 0xa1
sbit key0=P2^0;
sbit key1=P2^1;
sbit key2=P2^2;
sbit scl=P0^0;
sbit sdl=P0^1;


void delay(uchar i)
{ uchar j;
 while(i--)
 {for(j=0;j<121;j++)
 	  {;}
 }
}
void start()
{sdl=1;
 scl=1;
 sdl=0;
 scl=0;
}
void stop()
{
  scl=0;
  sdl=0;
  scl=1;
  sdl=1;
}
noask()
{ 
  sdl=1;
  scl=1;
  scl=0;
}
bit testask()
{  bit EB;
  sdl=1;
  scl=1;
  EB=sdl;
  scl=0;
  return(EB);
}
write8bit(uchar input)
{ uchar a; 
 for(a=0;a<8;a++)
 {
    sdl=(bit)(input&0x80);
    scl=1;
    scl=0;
    input=input<<1;
 }
}
write(uchar dc,uchar address)
{
 start();
 write8bit(wda);//发送器件地址
 testask();
 write8bit(address);//发送字节地址
 testask();
  write8bit(dc);//发送数据
 testask();
 stop();
 delay(10);
}
read8bit()
 { uchar a,temp=0;
  for(a=0;a<8;a++)
  { scl=1;
    temp=temp<<1;
    temp=temp|((uchar)sdl);
    scl=0;
  }
  return(temp);
 }
read(uchar address)
{  uchar date;
 start();
 write8bit(wda);
 testask();
 write8bit(address);
 testask();
 start();
 write8bit(rda);
 testask();
 date=read8bit();
 noask();
 stop();
 return(date);
}
uchar code table[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
                    
	                     

void main(void)
{ uchar n1=0x12,n2=0x25,n3;
 while(1)
 {
   if(!key0)
   { write(n1,0x01);
   while(!key0);
   delay(20);
    }
    if(!key1)
   { write(n2,0x01);
   while(!key1);
    delay(20);
    }
     if(!key2)
   { n3=read(0x01);
   while(!key2);
    delay(20);
    }
    P1=table[n3/10];
    P3=table[n3%10];

    
 }
  
}