51單片機(jī)的串口收發(fā)通信C語言程序

#include

#include

#include

#define uchar unsigned char

#define uint unsigned int

#define ulong unsigned long

#define ushort unsigned short

#define MAX_DATA_LENGTH 32

typedef struct//定義數(shù)據(jù)發(fā)送包

{

uchar head;//包頭

uchar length;//數(shù)據(jù)長度

uchar cmd;//命令

uchar sData[6];//數(shù)據(jù)

uchar crc;//校驗(yàn)

uchar end;//包尾

} Packet,*PT;

typedef struct//定義接收緩沖區(qū)

{

uchar iCnt;

uchar sData[MAX_DATA_LENGTH];

} RecvBuf,*RB;

void SendD(PT addrBuf,uint cnt);//定義發(fā)送函數(shù)

void Sleep(uint ms);//定義延時(shí)子程序

void init();//C51初始化程序

bit Judge(RB addrBuf);

void Crc(PT addrBuf);

Packet pT;

RecvBuf rB;

void main()

{

memset(&pT,0x00,MAX_DATA_LENGTH+5);

memset(&rB,0x00,MAX_DATA_LENGTH+1);

pT.head=0x02;

pT.length=0x0b;

pT.cmd=0x44;

pT.end=0x03;

sprintf(pT.sData,"%s","080327");

pT.crc=0x056;

init();

while(1)

{

Sleep(10000);

}

}

void serial(void) interrupt 4//定義串行口中斷處理子程序

{

ES=0;

while(RI)

{

rB.sData[rB.iCnt]=SBUF;

rB.iCnt++;

RI=0;

}

if(Judge(&rB))

{

memset(&rB,0x00,MAX_DATA_LENGTH+1);

SendD((uchar*)&pT,pT.length);

}

ES=1;

}

bit Judge(RB addrBuf)

{

if(addrBuf->sData[0]==0x02&&addrBuf->sData[addrBuf->sData[1]-1]==0x03)

return 1;

else

return 0;

}

void init()//完成51初始化工作

{

TMOD=0x20;//初始化51

TH1=0xfd;

TL1=0x0Fd;

TR1=1;

SCON=0x50;

PCON=0x00;

EA=1;

ES=1;

}

void SendD(uchar *addrBuf,uchar cnt)

{

int i=0;

T0=0;

while(++i<=cnt)

{

SBUF=addrBuf[i-1];

while(!TI);

TI=0;

}

}

void Sleep(uint ms)//定義延時(shí)子程序

{

int i,j;

for(i=0;i

for(j=0;j<10;j++);

}