结合PROTEUS仿真的12864液晶显示程序.doc

在proteus上用51单片机控制12864液晶显示 2008-12-20 16:23 经过半天的努力，终于在PROTEUS上让液晶屏显出汉字了 以下是源代码 /*******************************main.h******************************/ #ifndef _MAIN_H#define _MAIN_H #include reg52.h #define LcdDataPort P2?? //数据端口 #ifndef UCHAR_DEF#define UCHAR_DEFtypedef unsigned char uchar;#endif sbit Reset = P3^0;?? //复位sbit RS = P3^1;??? //指令数据选择sbit E = P3^2;??? //指令数据控制sbit CS1 = P3^4;?? //左屏幕选择，低电平有效sbit CS2 = P3^5;?? //右屏幕选择sbit RW = P3^3;??? //读写控制sbit busy = P2^7;?? //忙标志 void SetOnOff(uchar onoff);??//开关显示void SelectScreen(uchar screen);//选择屏幕void ClearScreen(uchar screen);?//清屏void Show1616(uchar lin,uchar colum,uchar *address);//显示一个汉字void CheckState();?? //判断状态void LcdDelay(unsigned int time); //延时void WriteData(uchar dat); //写数据void SendCommand(uchar command); //写指令void SetLine(uchar line);? //置行地址void SetColum(uchar colum);//置列地址void SetStartLine(uchar startline);//置显示起始行void InitLcd();??? //初始化void ResetLcd();?? //复位 #endif /*********************************************************************/ /***********************************lcd.c****************************************/ #include main.h void CheckState(){?E = 1;?RS = 0;?RW = 1;?LcdDataPort = 0xff;?while(!busy);} void LcdDelay(unsigned int time){?while(time --);} void WriteData(uchar dat){?CheckState();?E = 1;?RS = 1;?RW = 0;?LcdDataPort = dat;?E = 0;} void SendCommand(uchar command){?CheckState();?E = 1;?RW = 0;?RS = 0;?LcdDataPort = command;?E = 0;} void SelectScreen(uchar screen)?//0-全屏，1—左屏，2-右屏{?switch(screen)?{??case 0 :???CS1 = 0;???LcdDelay(2);???CS2 = 1;???LcdDelay(2);???break;??case 1 :???CS1 = 1;???LcdDelay(2);???CS2 = 0;???LcdDelay(2);???break;??case 2 :???CS1 = 0;???LcdDelay(2);???CS2 = 0;???LcdDelay(2);???break;?}} void ClearScreen(uchar screen)? // screen 0-全屏，1—左屏，2-右屏{?uchar i,j;?SelectScreen(screen);?for(i = 0;i 8;i ++)?{??SetLine(i);??SetColum(0);??for(j = 0;j 64; j ++)???WriteData(0);?}} void