RT12864M液晶模块单片机驱动程序

/*------外部晶振为     12MHz-------*/           
 /*--------最后修改2011.02.26-------*/

#include "STC12C5620AD.h"
#include "RT12864M.h"
#include "delay.h"
/**********************自定义字符编码*************************/
unsigned char code CGROM_Code[]={0x00,0x00,0x00,0x00,0x7F,0xFE,0x60,0x06,0x33,0xCC,0x19,0x98,0x0C,0x30,0x06,0x60,
           0x03,0xC0,0x01,0x80,0x01,0x80,0x01,0x80,0x01,0x80,0x01,0x80,0x01,0x80,0x01,0x80,   //天线图形
          0x00,0x00,0xE0,0x00,0xA0,0x00,0xEE,0x00,0x1B,0x00,0x31,0x00,0x30,0x00,0x30,0x00,
         0x30,0x00,0x30,0x00,0x31,0x00,0x1B,0x00,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00};    //摄氏图形 
/**********************LCD检测是否忙*************************/
bit LCD_Test_Busy(void)        
  {
   bit Temp;
   LCD_DATAPORT=0xff;                  //数据口先全部置位
   LCD_RS=0;
   LCD_RW=1;
   LCD_E=1;
   Temp=(bit)(LCD_DATAPORT & 0x80);    //取最高位，1为忙
   LCD_E=0;
   return Temp;
  }
/*************************LCD写命令**************************/
void LCD_Write_CMD(uchar cmd)
  {
 while(LCD_Test_Busy());           //先检测LCD是否忙
 LCD_RS=0;
 LCD_RW=0;
 LCD_E=1;
    LCD_DATAPORT=cmd;            //写入命令
 LCD_E=0;
  }
/*************************LCD写数据**************************/
void LCD_Write_DATA(uchar Inputdata)
  {
 while(LCD_Test_Busy());           //先检测LCD是否忙
 LCD_RS=1;
 LCD_RW=0;
 LCD_E=1;
    LCD_DATAPORT=Inputdata;      //写入数据
 LCD_E=0;
  }
/************ 写入自定义字符或图形到 CGRAM  *****************/
void LCD_Write_CGRAM(uchar *Char_Code)
{
 uchar  i;
 LCD_Write_CMD(0x34);    //打开扩充指令                  
 LCD_Write_CMD(0x02);    //SR=0,允许输入CGRAM地址
 LCD_Write_CMD(0x30);    //恢复基本指令
 LCD_Write_CMD(0x40);    //CGRAM地址
 for(i=0;i<32;i++)
  {
   LCD_Write_DATA(Char_Code[i*2]);
   LCD_Write_DATA(Char_Code[i*2+1]);
  }
}
/**********************设置操作地址**************************/
void LCD_Set_XY(uchar x,uchar y)
{
 uchar Address;
 switch(x)
 {
 case 0: 
     Address = 0x80 + y;
     break; 
    case 1: 
     Address = 0x90 + y;
  break;         
 case 2: 
  Address = 0x88 + y;
  break; 
    case 3: 
  Address = 0x98 + y;
  break; 
 default:
  Address = 0x80 + y;
  }
    LCD_Write_CMD(Address); 
}
/*************************显示一个CGRAM**************************/
/**************参数：行号，列号，要显示的CGRAM*****************/
void LCD_Display_CGRAM(uchar x,uchar y,uchar add1,uchar add2)
{ 
    LCD_Set_XY(x,y);            //先确定显示行和列       
 LCD_Write_DATA(add1);
 LCD_Write_DATA(add2);
}
/**************在X（行）Y（列）显示字符串********************/
void LCD_Display_String( uchar x,uchar y,uchar *str )
  {
    LCD_Set_XY(x,y);         //先确定起始行和列
 while (*str!='') 
      {
        LCD_Write_DATA(*str);
     str++;
   }
  }

/**************在X（行）Y（列）显示数值********************/
void LCD_Display_Value( uchar x,uchar y,uchar val )
{
 LCD_Set_XY(x,y);      //先确定起始行和列
 LCD_Write_DATA(val);
}
/**************在X（行）Y（列）显示数组********************/
void LCD_Display_Array( uchar x,uchar y,uchar *Array,uchar Lenth )
{
 LCD_Set_XY(x,y);      //先确定起始行和列
 while(Lenth--)
  {
   LCD_Write_DATA(*Array);
   Array++;
  }
}
/*************************LCD初始化**************************/
void LCD_Init(void)
{
 LCD_RST=0;
 Delay_us(10);
 LCD_RST=1;          //LCD复位
    LCD_Write_CMD(0x30);          //功能设定（并行、基本指令）   
    LCD_Write_CMD(0x0c);          //整体显示，光标
    LCD_Write_CMD(0x01);          //清屏
 LCD_Write_CMD(0x06);       //光标右移，整体不右移
 LCD_Write_CGRAM(CGROM_Code);   //写入自定义字符
}

这是一个完整项目里面截取出来的子程序 头文件和原理图请到http://www.51hei.com/bbs/dpj-19294-1.html 去下载.