51 MCU T2 timer serial communication

The 52 chip has one more timer than the 51. So I also read a lot of information on the Internet, many of which could not run. After making some modifications, I finally realized the simulation test on Keli and Proteus. The following is my code and designed circuit.

/*-----------------------------------------------------------------------------

* Experiment name: RS232 serial port test

* Experimental description: The microcontroller serial port receives data to control the light on and off

* Connection method: 

* Note: The crystal used in this test is 11.0592

***********************************************************************************/

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar PuZh[36] = "hello world";

//--Define the IO used--//

sbit LED=P2^0;

//--Declare global functions--//   

void UsartConfiguration();

void Delay_1ms(uint i);

/********************************************************************

* Name: Com_Int()

* Function: Serial port interrupt subfunction

* Input: None * Output: None

***************************************************************************/

void Com_IntIsr(void) interrupt 4

{

    uchar i;

  uchar receive_data;

  EA = 0;

  if(RI == 1) //When the hardware receives a data, RI will be set

    {         

        RI = 0;

        receive_data = SBUF; //Received data

        if(receive_data == '1')     

        {

                LED =0; //Lights up when receiving 1

        }

        else

        {

                LED =1; //light off in other cases

        }

    }

        for(i=0; i<36; i++)

        {

            SBUF = PuZh[i]; //Put the data to be sent into the send register

            while(!TI); //Wait for sending data to complete

            TI=0; //Clear the send completion flag

            Delay_1ms(1);

        }

        EA = 1;

}

/***********************************************************************************

* Function name: main

* Function: Main function

* Input: None

* Output: None

***********************************************************************************/

void main()

{

    UsartConfiguration(); //Initialize the serial port

    while(1);    

}

/***********************************************************************************

* Function name: UsartConfiguration()

* Function: Set the serial port

* Input: None

* Output: None

***********************************************************************************/

void UseArtConfiguration()

{    

    T2MOD = 0x01; //Automatically reload

    T2CON = 0x30; //T2 is used as the sending and receiving clock

    TH2 = 0xFF; //9600 baud rate, 11.0592Mhz crystal

    TL2 = 0xDC; 

    RCAP2H = 0xFF; 

    RCAP2L = 0xDC; 

    SCON = 0x50; //Serial port mode 1, 1 start bit, 1 stop bit, 8-bit data, variable baud rate

    PCON = 0X00; //Baud rate is not doubled

     TR2 = 1; //Start T2 

    ES = 1; //Open serial port interrupt

      EA = 1; // Enable general interrupt

}

/********************************************************************

* Name: Delay_1ms()

* Function: Delay subroutine, delay time is 1ms

* x * Input: x (number of millisecond delays)

* Output: None

***************************************************************************/

void Delay_1ms(uint i) //1ms delay

{

  uchar x,j;

  for(j=0;j    for(x=0;x<=148;x++);

}

Since I didn't use my own computer to draw the picture, I can't post the picture, but if I have time, I will definitely post the picture. But I will also talk about the general idea of ​​the design, which is a minimum microcontroller system RX terminal connected to the RX terminal of the compim, TX connected to the TX terminal of the compim, and then the LED is connected to the 0 terminal of the P2 port.