串口中断处理 m=SBUF; SBUF=m;自收发

volatile uint8 Sending;

void InitUART(void)

{

EA=0;

TMOD&=0x0F;

TMOD|=0x20;

SCON=0x50;

TH1=256-Fclk/(BitRate*12*16);

TL1=256-Fclk/(BitRate*12*16);

PCON|=0x80;

ES=1;

TR1=1;

REN=1;

EA=1;

}

End of function

void UartISR(void) interrupt 4

{

char m;

ES = 0;

if(RI)

{

m=SBUF;

SBUF=m;

RI=0;

}

else

{

TI=0;

Sending=0;

}

ES = 1;

}

End of function

void UartPutChar(uint8 d)

{

SBUF=d;

Sending=1;

while(Sending);

}

End of function

void Prints(uint8 * pd)

{

while((*pd)!='\0')

{

UartPutChar(*pd);

pd++;

}

}

End of function