100字范文 > 51单片机多机串口通讯实验与双机串口通讯实验及proteus仿真

51单片机多机串口通讯实验与双机串口通讯实验及proteus仿真

时间：2023-04-06 04:19:52

文章目录

51单片机多机串口通讯实验与双机串口通讯实验及proteus仿真实验内容一、实验一多机串口通讯实验数码管显示1.仿真图2.代码二、实验二双机串口通讯实验 LCD显示1.仿真图2.代码总结

实验内容

串口通讯实验，设计一个甲、乙、丙多机通信实验，甲机发送数据给乙机，乙机收到后反馈一个内容给甲机，甲机收到反馈内容再加上原来发送内容再发给到乙机，乙机收到信息，进行确认对比，内容正确就在显示终端显示相应内容，三个收发端都可以按照此方式收发。当甲机连续通过按键发送同一个内容三次，就对三个收发端的数码管清零。

从一个单片机发送5个给另一个单片机，另一个单片机接收到后完成数据相加，并通过数码管显示出来,要求所有数据为十进制格式。

一、实验一多机串口通讯实验数码管显示

1.仿真图

2.代码

#include<reg51.h>#define uchar unsigned charunsigned char code str1[]="1";//设置需要发送的协议代码unsigned char code str2[]="2";unsigned char code str3[]="3";sbit P1_0=P1^0; //给相应端口一个编号sbit P1_1=P1^1;sbit P1_2=P1^2;sbit led0 = P1^6; // 作为主机，接收到从机反馈信号，显示sbit led1 = P1^7; // 作为从机，接收到主机信号，显示sbit key = P3^3; //主从机运行选择按下时，无法通信uchar temp,flag;uchar a[10];uchar count = 0;uchar code table[]={0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F, 0x77, 0x7C, 0x39, 0x5E, 0x79, 0x71};//函数的功能是：向PC端发送一个字节数据void send(unsigned char dat){SBUF=dat;while(TI==0);TI=0;}void delay(unsigned int n) //延时函数的设置{unsigned int i,j;for(i=0;i<n;i++)for(j=249;j>0;j--);}void main(void){unsigned int i;TMOD=0x20;//TMOD=0010 0000,设置定时器T1工作于方式二SCON=0x60;//SCON=0100 0000,设置串口的工作方式为方式1PCON=0x00;//PCON=0000 0000,波特率为9600 晶振为11.0592TH1=0xfd; //设置定时器T1的初值TL1=0xfd; //定时器T1自动填充的值TR1=1;//启动定时器T1REN=1; //允许接收EA=1;//开起总中断开关ES=1;//需要用到串行口的中断所以ES=1就是把串行口的中断打开了EX1 = 1;//INT1中断允许EA = 1;//全局中断打开IT1 = 1;//触发方式为下降沿触发led1 = 0;led0 = 0;while(1){if(P1_0==0) //判断P1_0口的开关状态 U1->U2{i=0;while(str1[i]!='\0') //循环发送相应数组中的数据{send(str1[i]);//P0=table[str1[i]];i++;delay(1);}send('\0'); //最后一位补上\0作为接收机判断结束的标准delay(1000);}//if(key==0)//{//flag=0;//}if(flag==1)//等待中断的来临，然后flag就会被赋值为1{if(P1_1==0 & P1_2==0) // 同时按下按键2 与按键3 ，处于发送状态否则处于接收状态{if(a[0]==0x32) {i=0;a[1] = str1[0];while(a[i] != '\0') {//p0 = 0x00;send(a[i]);//P0=table[a[i]];i++;delay(1);}send('\0'); //最后一位补上\0作为接收机判断结束的标准led0 = 1;delay(1000); }} //处于接收状态else{if(a[0]==0x31) {i=0;while(str2[i]!='\0') {send(str2[i]);i++;delay(1);}send('\0'); led1 = 1;delay(1000);}if(a[0]==0x32 && a[1]==0x31){P0=table[2];delay(500);P0=table[1];delay(500);}}flag=0;led0=0;led1=0;P0=0xff;} }}void serial() interrupt 4 //设置中断函数{temp=SBUF; //当有中断时把传过来的数据暂存到temp中RI=0; //把设置中断的标志初始化，等待下一中断if(temp==0x00) //当到达最后一位{a[count]=temp; count=0; //计数器初始化为下一次中断准备flag=1; //标志置1进入主函数，进行端口的赋值}else{a[count]=temp;count=count+1;}}void jump_low() interrupt 2{flag=0; //无法进入串口中断delay(1000);}

二、实验二双机串口通讯实验 LCD显示

1.仿真图

2.代码

/** 功能描述：甲机发数据!”**/#include <reg52.h>#include <intrins.h>#define uchar unsigned char#define uint unsigned int#define lcd_out P0/***********端口定义********************************/sbit rs=P2^0;sbit rw=P2^1;sbit e=P2^2;sbit p10=P1^0;sbit p11=P1^1;sbit p12=P1^2;sbit p13=P1^3;sbit p14=P1^4;sbit p15=P1^5;sbit p16=P1^6;sbit p17=P1^7;sbit led=P3^7;/***********函数申明***********************************/void UART_Init(void);void UART_SendData(uchar dat);void UART_SendString(uchar *p);void delay(uint j);void check_busy(void);void write_command(uchar com);void write_data(uchar dat);void LCD_initial(void);void dis_char(uchar ad, uchar input);void shaomiao(void);void panduan(void);void display1(void);void display2(void);/***********变量定义********************************/uchar address=0x00; //显示地址uchar sting[]="0123456";unsigned char code str[]="0123456789";uchar code temp[]="0123456789";uchar temp1[8],mm[4],temp2[8];float q;uchar num,num1,k,r=0,n,h,d,w;float sum;long uu;void main(void){LCD_initial();//LCD1602 初始化UART_Init(); //串口初始化 led=0;while(1){shaomiao();panduan();//UART_SendString(sting); //发送字符串//address=0x00; //发送完数据地址就归零从头再来//delay(1000);//write_command(0x01); //发送完一帧数据清屏 }}//串口初始化 void UART_Init(void){SCON=0x50;TMOD=0x20;PCON=0x00;TH1 =0xf4;TL1 =0xf4; //预置初值，设波特率为2400TR1 =1;}//串口发送一个字节的数据 void UART_SendData(uchar dat){SBUF=dat;//发送数据while(!TI); //判断是否发送完TI=0; //软件清0delay(100);dis_char(address++,dat); //发送完一个数据显示一个数据if(address==0x10) address=0x40;//显示完第一行就显示第二行if(address==0x50){write_command(0x01);address=0x00;//显示完第二行清屏后又显示第一行}}//串口发送多字节数据void UART_SendString(uchar *p){while(*p!='\0'){UART_SendData(*p);p++;}}//1ms延时程序void delay(uint j){uchar i=250;for(;j>0;j--){while(--i);i=249;while(--i);i=250;}}查忙程序//void check_busy(void)//{//uchar dt;//do//{//dt=0xff;//e=0;//rs=0;//rw=1;//e=1;//dt=lcd_out;//}while(dt&0x80);//e=0;//}//写控制指令void write_command(uchar com){//check_busy();e=0;rs=0;rw=0;lcd_out=com;e=1;_nop_();e=0;delay(1);}//写数据指令void write_data(uchar dat){//check_busy();e=0;rs=1;rw=0;lcd_out=dat;e=1;_nop_();e=0;delay(1);}//液晶屏初始化void LCD_initial(void){write_command(0x38);//8位总线,双行显示，5X7的点阵字符write_command(0x0C);//开整体显示,光标关，无黑块write_command(0x06);//光标右移write_command(0x01);//清屏delay(1);}// 输出字符void dis_char(uchar ad, uchar input){write_command(ad+0x80);//ad是显示位置信息write_data(input);delay(10);}void shaomiao(){uchar i,s;for (i=0,s=0xfe;i<4;i++){P1=s;if(p14==0|p15==0|p16==0|p17==0){delay(10);if(p14==0|p15==0|p16==0|p17==0){if(p14==0){if(p10==0){num=7;UART_SendData(str[7]);}if(p11==0){num=4;UART_SendData(str[4]);}if(p12==0){num=1;UART_SendData(str[1]);}if(p13==0)num=10;} if(p15==0){if(p10==0){num=8;UART_SendData(str[8]);}if(p11==0){num=5;UART_SendData(str[5]);}if(p12==0){num=2;UART_SendData(str[2]);}if(p13==0){num=0;UART_SendData(str[0]);}}if(p16==0){if(p10==0){num=9;UART_SendData(str[9]);}if(p11==0){num=6;UART_SendData(str[6]);}if(p12==0){num=3;UART_SendData(str[3]);}if(p13==0)num=11;}if(p17==0){if(p10==0)num=15;if(p11==0)num=14;if(p12==0)num=13;if(p13==0)num=12;}while(p14==0|p15==0|p16==0|p17==0); }if(num<10){k++;w=0;} if(d==1){d=0;sum=-sum;}}s=s<<1|0x01;s=s|0xf0; } } void display1(){uchar i;uu=(long)(sum);temp1[7]=uu/10000000;temp1[6]=uu%10000000/1000000;temp1[5]=uu%10000000%1000000/100000;temp1[4]=uu%10000000%1000000%100000/10000;temp1[3]=uu%10000000%1000000%100000%10000/1000;temp1[2]=uu%10000000%1000000%100000%10000%1000/100;temp1[1]=uu%10000000%1000000%100000%10000%1000%100/10;temp1[0]=uu%10;if(h==1){h=2;write_command(0x80+15-k);write_data(0x2d);} if(r==0)write_command(0x80+15);if(r==1)write_command(0xc0+15);write_command(0x04);for (i=0;i<k;i++){write_data(temp[temp1[i]]);delay(5);}}void display2(){uchar i;temp2[7]=uu%10000000/1000000;temp2[6]=uu%10000000%1000000/100000;temp2[5]=uu%10000000%1000000%100000/10000;temp2[4]=uu%10000000%1000000%100000%10000/1000;temp2[2]=uu%10000000%1000000%100000%10000%1000/100;temp2[1]=uu%10000000%1000000%100000%10000%1000%100/10;temp2[0]=uu%10;if(h==1){h=2;write_command(0x80+15-k-4);write_data(0x2d);} if(r==0)write_command(0x80+15);if(r==1)write_command(0xc0+15);write_command(0x04);for (i=0;i<k+4;i++){if(i==3){write_data(0x2e);i++;}write_data(temp[temp2[i]]);delay(5);} }void panduan(){if(n==1&num==0){write_command(0x01);write_command(0x80+15);write_data(temp[0]);k=0;n=0;}if(num==10){write_command(0x01);k=0;n=0;r=0;}if(n==1&num>=1&num<10){write_command(0x01);k=1;n=0;r=0;} if(num<10&k==1){sum=num;mm[0]=num;if(num==0)k=0;}if(num<10&k==2){sum=mm[0]*10+num; mm[1]=num; } if(num<10&k==3){sum=mm[0]*100+mm[1]*10+num;mm[2]=num; }if(num<10&k==4){sum=mm[0]*1000+mm[1]*100+mm[2]*10+num;mm[3]=num; }if(num<10&k==5){num=10;}if (num>=12&num<16){r=1;k=0;q=sum;if(num==12){write_command(0xc0);write_data(0x2b);}if(num==13){write_command(0xc0);write_data(0x2d);}if(num==14){write_command(0xc0);write_data(0x2a);}if(num==15){write_command(0xc0);write_data(0xfd);}num1=num;n=0;}if(num==11&w==0){w=1;n=1;r=0; num=16; write_command(0x01); if(num1==12)sum=q+sum;if(num1==13) sum=q-sum; if(num1==14)sum=q*sum;if(num1==15)sum=q/sum; if(sum>=0)h=0;else{h=1;sum=-sum;d=1;}if(sum<100000000)k=8;if(sum<10000000)k=7;if(sum<1000000)k=6;if(sum<100000)k=5;if(sum<10000)k=4;if(sum<1000)k=3;if(sum<100)k=2; if(sum<10)k=1; if(sum!=(long)(sum)){uu=sum*10000;display2();} } if(sum==(long)(sum)) display1(); }