Realization of data transmission between a and B computers by using single chip microcomputer serial port

subject ： The serial port of single chip microcomputer is used to realize the data transmission between machine a and machine B .

requirement ：

• ① Machine a continuously sends 0-F, Co recording 16 Characters , And display it on the nixie tube ;
• ② Machine B receives the content of machine a and sends it back after displaying it with nixie tube ;
• ③ After receiving the content returned by machine B, machine a compares it with the current content , If consistent, send the next ;
• ④ Crystal vibration is 11.0592Mhz, The baud rate of data communication is 2400.

1、 Virtual circuit diagram

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2、 To achieve the effect of

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3、 Related codes

• ① Transmitter section

#include<reg51.h>
#define uchar unsigned char
char code map[]={
    0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7c,0x39,0x5e,0x79,0x71
};

void delay(unsigned int time){
    unsigned int j = 0;
    for(;time>0;time--)
    for(j=0;j<125;j++);
}
void main(void){
    uchar counter=0; // Define counters 
    TMOD=0x20;       //T1 Timing mode 2
    TH1 = TL1 = 0xf4;//2400b/s
    PCON=0;            // Baud rate does not double 
    SCON = 0X50;    // Serial port mode 1,TI and RI Zero clearing , Allowable convergence 
    TR1=1;                 // start-up TI
    while(1){
        SBUF = counter;// Send a contact signal 
        while(TI==0);     // Wait for the send to complete 
        TI=0;                 // clear TI Sign a 
        while(RI==0);    // Wait for machine B to answer 
        RI=0;
        if(SBUF == counter){   // If the return value is the same as the sending value , Organize new data 
            P2 = map[counter];// Show sent values 
            if(++counter>15) counter=0;// Correct the counter value 
            delay(1000);
        }
    }
}

• ② Receiver part

#include<reg51.h>
#define uchar unsigned char
char code map[]={
    0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7c,0x39,0x5e,0x79,0x71
};


void main(void){
    uchar receive;      // Define the receive buffer 
    TMOD=0x20;          //TI Timing mode 2
    TH1=TL1=0xf4;       //2400b/s
    PCON=0;             // Baud rate does not double 
    SCON=0x50;          // Serial port mode 1,TI and RI Zero clearing , Allow to accept 
    TR1=1;              // start-up TI
    while(1){ 
        while(RI==1){           // Wait for reception to complete 
            RI = 0;             // clear RI Sign a 
            receive = SBUF;     // Get the received value 
            SBUF = receive;       // The result is returned to the host 
            while(TI==0);         // Wait for the end of sending 
            TI = 0;             // clear TI Sign a 
            P2 = map[receive];  // Displays the received value 
        }
    }
}

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author ： Stars in the distance CSDN：https://blog.csdn.net/qq_44921056