sci.h

摇棒设计

#define uchar unsigned char
#include "string.h"
#include<AT89x52.h>
uchar Msg;
uchar i;

void Sci_init(int bode)
{
TMOD=0x20; //确定定时器工作模式
switch(bode)
{
case 768:
TH1=0xff;//波特率为2400
TL1=0xff; //定时初值
PCON&=0x80; //SMOD=1
break;
case 384:
TH1=0xfe;//波特率为2400
TL1=0xfe; //定时初值
PCON&=0x80; //SMOD=1
break;
case 144:
TH1=0xfd;//波特率为2400
TL1=0xfd; //定时初值
PCON&=0x80; //SMOD=1
break;
case 72:
TH1=0xfa;//波特率为2400
TL1=0xfa; //定时初值
PCON&=0x80; //SMOD=1
break;
case 96:
break;
case 48:
TH1=0xf7;//波特率为2400
TL1=0xf7; //定时初值
PCON&=0x80; //SMOD=1
break;
case 36:
TH1=0xef;//波特率为2400
TL1=0xef; //定时初值
PCON&=0x80; //SMOD=1
break;
case 24:
TH1=0xef;//波特率为2400
TL1=0xef; //定时初值
PCON&=0x80; //SMOD=1
break;
case 12:
TH1=0xdd;//波特率为2400
TL1=0xdd; //定时初值
PCON&=0x80; //SMOD=1
break;
case 6:
TH1=0xdd;//波特率为2400
TL1=0xdd; //定时初值
PCON&=0x00; //SMOD=1
break;
case 3:
TH1=0xdd;//波特率为2400
TL1=0xdd; //定时初值
PCON&=0x00; //SMOD=1
break;
}
TR1=1; //开启定时器1
SCON=0x40; //串口工作方式1
REN=1; //允许接收
}

void SendData(uchar Dat)
{ 
SBUF=Dat;
while(1){ if(TI)
{ TI=0;
break;}}
}

uchar ReceiveData(void)
{
while(1)
  { 
     if(RI)
     { 
	  RI=0;
	  Msg=SBUF;
	  SendData(Msg);
      return Msg;
	  }
  }
}
void mDelay(unsigned int DelayTime)
{ unsigned char j=0;
for(;DelayTime>0;DelayTime--)
{ for(j=0;j<125;j++)
{;}
}
}

uchar getchar()
{
return ReceiveData();
}

void outint(unsigned int n)
{
   int i;
   int j=1;
    if(n<0)
    n=-n;
    if(n==0)
    {
    SendData(n+'0');
    SendData('\r');
    SendData('\n');
    return;
    }
    i=n;
    for(;i/10;i=i/10)
    {
       j=j*10;
    }
    for(;j;j=j/10)
    {
      
      SendData(n/j+'0');
      n=n-n/j*j;
    }
    
   SendData('\r');
   SendData('\n');
}

void outchar(uchar ch)
{
SendData(ch);
SendData(' ');
}

void outstring(uchar s[])
{
for(;*s!='\0';s++) SendData(*s);
SendData('\r');
SendData('\n');
}