#include
#define uchar unsigned char
float rtemp,sflag;
void SerialInit() //11.0592M crystal oscillator, baud rate 9600
{
TMOD=0x20; //Set timer 1 to work in mode 2
TH1=0xfd;
TL1=0xfd;
TR1=1; //Start timer 1
SM0=0; //Serial port mode 1
SM1=1;
REN=1; //Allow receiving
PCON=0x00; //Close the frequency multiplier
ES=1; //Open serial port interrupt
EA=1; //Open the general interrupt
}
void SerialService() interrupt 4
{
if(RI==1)
{
RI=0;
rtemp=SBUF; //Read buffer
sflag=1;
}
}
void main()
{
SerialInit();
while(1)
{
if(sflag==1)
{
ES=0; //Disable serial port interrupt during sending
sflag=0;
SBUF=rtemp;
while(!IF);
IF = 0;
ES=1; //Open serial port interrupt after sending completed
}
}
}
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