51单片机串口通信仿真实现16 16点阵显示程序

2016-01-15 来源：eefocus

首先要了解串口通信的基本工作原理，连接图如下：

虚拟终端连接：
单片机+虚拟终端（作为串口输入设备）+串口

连接图如下：

设置如下：

单片机虚拟终端选项作用如下：

如果输入的是ASCII码，那么就不要勾选 Hex Display Mode
如果输入的是16进制，那么就不要勾选 Hex Display Mode

Clear Screen 是清屏
Echo Typed Characters 是你在虚拟终端窗口输入字符时，输入的字符显示在虚拟终端窗口上。

具体C程序如下（如有疑问联系本人，新浪微博地址：

http://t.sina.com.cn/1858560312）：

#include
#include
#define uint unsigned int
#define uchar unsigned char
unsigned char a,flag;
char code YD[]={

0x01,0x00,0x01,0x00,0x7F,0xFC,0x03,0x80,
0x05,0x40,0x09,0x30,0x31,0x0E,0xDF,0xE4,
0x00,0x80,0x01,0x00,0x7F,0xFE,0x01,0x00,
0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,

0x20,0x40,0x30,0x40,0x24,0x4C,0x42,0x70,
0xFF,0x44,0x42,0x46,0x00,0x7C,0x7E,0x00,
0x42,0x40,0x7E,0x4C,0x42,0x70,0x7E,0x40,
0x42,0x44,0x42,0x46,0x4A,0x3C,0x44,0x00,

0x00,0x00,0x0F,0xF0,0x08,0x10,0x0F,0xF0,
0x08,0x10,0x0F,0xF0,0x00,0x00,0xFF,0xFE,
0x01,0x00,0x09,0x00,0x09,0xF8,0x09,0x00,
0x15,0x00,0x23,0x00,0x40,0xFE,0x00,0x00,

0x01,0x00,0x01,0x00,0x02,0x80,0x02,0x40,
0x04,0x20,0x09,0x18,0x11,0x0E,0x61,0x04,
0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,
0x01,0x00,0x01,0x00,0x01,0x00,0x00,0x00,

0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,
0x01,0x00,0xFF,0xFE,0x01,0x00,0x02,0x80,
0x02,0x80,0x02,0x40,0x04,0x40,0x04,0x20,
0x08,0x10,0x10,0x18,0x20,0x0E,0x40,0x04,/

0x08,0x20,0x08,0x20,0x08,0x20,0x4B,0xFE,
0x4A,0x22,0x4A,0x22,0x4A,0x22,0x4A,0x22,
0x4A,0x22,0x4A,0x22,0x4A,0x22,0x12,0x2E,
0x12,0x24,0x20,0x20,0x40,0x20,0x80,0x20,

0x00,0x00,0x7F,0xFC,0x00,0x10,0x1F,0x90,
0x10,0x90,0x1F,0x90,0x10,0x90,0x00,0x04,
0xFF,0xFE,0x00,0x10,0x1F,0x90,0x10,0x90,
0x1F,0x90,0x10,0x90,0x00,0x50,0x00,0x20
};

void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
  for(y=110;y>0;y--);
}

void main()
{
int i;
TMOD=0x20;//设置定时器1为工作方式2
TH1=0xfd;
TH2=0xfd;//设置波特率为9600
TR1=1;//启动定时器1
SM0=0;
SM1=1;//选择串口工作方式1
REN=1;//允许接收数据
EA=1;//打开总中断
  ES=1;//打开串口中断

while(1)
{
  if(flag==1)
  {
   flag=0;
    while(1)
             {
    if(a==0x31)//键盘码十六进制
    {
     for(i=0;i<16;i++)
     {
      P1=i;
      P0=~YD[2*i];
      P2=~YD[2*i+1];
      delay(2);
     }
    }

    if(a==0x32)
                {
             for(i=1;i<17;i++)
     {
      P1=i;
      P0=~YD[32+2*i];
      P2=~YD[32+2*i+1];
      delay(2);

     }
             }

    if(a==0x33)
    {
     for(i=1;i<17;i++)
     {
      P1=i;
      P0=~YD[64+2*i];
      P2=~YD[64+2*i+1];
      delay(2);
     }
    }

    if(a==0x34)
    {
     for(i=1;i<17;i++)
     {
      P1=i;
      P0=~YD[96+2*i];
      P2=~YD[96+2*i+1];
      delay(2);
     }
    }

    if(a==0x35)
    {
     for(i=1;i<17;i++)
     {
      P1=i;
      P0=~YD[128+2*i];
      P2=~YD[128+2*i+1];
      delay(2);
     }
    }

    if(a==0x36)
    {
     for(i=1;i<17;i++)
     {
      P1=i;
      P0=~YD[160+2*i];
      P2=~YD[160+2*i+1];
      delay(2);
     }
    }

    if(a==0x37)
    {
     for(i=1;i<17;i++)
     {
      P1=i;
      P0=~YD[192+2*i];
      P2=~YD[192+2*i+1];
      delay(2);
     }
    }

   }//第二个while结尾
  }//if结尾
}//第一个while结尾
}//主函数结尾

void ser() interrupt 4
{
RI=0;//接受中断标志位，清0为取消中断申请
a=SBUF;//接收数据
flag=1;//中断标志位
}

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51单片机串口通信点阵显示

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