单片机多机串口通讯实验LCD1602显示 Proteus仿真程序 -

/** 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2400
TR1 =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0
delay(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();
}

复制代码