两个IO端口驱动74LS164扩展成并口驱动LCD1602（四线模式）

        }
       
       buff[15] = temp;                                    //字符交换                                
      }
 }

//*******************************************************************
//函数名称：main();
//输入参数：无
//输出参数：无
//功能描述：主要程序
//建造日期：2008.12.08
//*******************************************************************
void main(void)                                            
 {   
     unsigned char i, rl;

     PortInit();                                           //脚位设置
     ConInit();                                            //配置设置
     LcdInit();                                            //液晶设置
 
     DelayMs(50);                                          //短暂延时
     AddrSite(0, 0);                                       //坐标设置
     PrintChar(TopChar);                                   //发送字符
           
     i  = 0;                                               //移动记数
     rl = 0;                                               //左右移动   

     while (1)
      {
       if (i++ > 200)                                      //移动记数
        {
         i = 0;                                            //记数清零
         rl ^= 0x01;                                       //移动取反 
        }

       DelayMs(250);                                       //延时显示 
       ShiftChar(BotChar, rl);                             //移动字符 

       AddrSite(0, 1);                                     //坐标设置
       PrintChar(BotChar);                                 //发送字符
      }  
 }

电路图:

09110523162436.rar

lcd资料:

09110523165030.rar

lcd1602代码:

09110523177564.rar

lcd1602仿真:

09110523171599.rar

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