STC12C5A60S2 dual serial port transmission

#include <STC12C5A60S2.H>

#include "intrins.h"

#define FOSC 11059200L

#define BAUD 9600

#define S2RI 0x01; //Serial port 2 receiving bit

#define S2TI 0x02; //Serial port 2 sends bit

void Delay500ms() //@11.0592MHz

{

    unsigned char i, j, k;

    i = 22;

    j = 3;

    k = 227;

    do

    {

        do

        {

            while (--k);

        } while (--j);

    } while (--i);

}

void InitUart()

{

    SCON=0x50;

    TMOD=0x20;

    TH1=TL1=-(FOSC/12/32/BAUD);

    TR1=1;

    IF=1;

}

void InitUart2()

{

    S2CON=0x50;

    AUXR|=0x14;

    BRT=-(FOSC/32/BAUD);

    S2CON|=S2TI;

}

void SendData2(unsigned char dat)

{

    bit busy=S2CON&S2TI;

    while(!busy)

    {

        busy=S2CON&S2TI;

    }

    S2CON&=~S2TI;

    S2BUF=that;

}

void SendData(unsigned char dat)

{

    while(!IF);

    IF = 0;

    SBUF=dat;

}

void main()

{

    unsigned char ch = 0;

    InitUart();

    InitUart2();

    while(1)

    {

        SendData(ch);

        SendData2(ch);

        ch++;

        if(ch==8) ch=0;

        Delay500ms();

        Delay500ms();

    }

}

If you need timer 1 to work in 12T mode, you need to make the following changes:

void InitUart()

{

    SCON=0x50;

AUXR|=0x40;

    TMOD=0x20;

    TH1=TL1=-(DARK/32/BAUD);

    TR1=1;

    IF=1;

}

At this time, modify the macro definition of BAUD to 115200 to achieve a baud rate of 115200.

If the baud rates of the two serial ports are the same, you can directly modify it as follows and save a timer.

void InitUart()

{

    SCON=0x50;

AUXR|=0x41;

    IF=1;

}