lcd12864.h

C51语言程序的驱动

/*----------------------------------------------------------------------------------------------------*/
/*-----------------------注意: 本编译器只支持8.3格式(即:DOS格式)的文件--------------------------------*/
/*----------------------------------------------------------------------------------------------------*/
//系统库
//#include "Reg51.h"
#include "absacc.h"


//自定义库   在"C:\comp51\UserLib\"文件夹中
#include ".\inc\ASCII816.h" //字符点阵库 32-127
#include ".\inc\HZTable.h"  //汉字点阵库(自做)
#include ".\inc\Menu.h"     //汉字点阵库(自做)


// LCD128*64  数据线
#define LCD12864DataPort  P1

// LCD128*64  I/O 信号管脚
sbit di   =P3^1;  // 数据\指令 选择
sbit rw   =P3^3;  // 读\写 选择
sbit en   =P3^2;  // 读\写使能
sbit cs1  =P3^4;  // 片选1,低有效(前64列)
sbit cs2  =P3^5;  // 片选2,低有效(后64列)

//sbit reset=P1^4;  //P3^5;  // 复位



/*----------------------------------------------------------------------------------------------------*/
/*  ****函数列表****

//开关显示
void SetOnOff(unsigned char onoff)

//选择屏幕
//screen: 0-全屏,1-左屏,2-右
void SelectScreen(unsigned char screen)

//清屏
//screen: 0-全屏,1-左屏,2-右
void ClearScreen(unsigned char screen)

//显示8*8点阵
//旋转90度:字模被竖着切分
//lin:行(0-7), column: 列(0-15)
//address : 字模区首地址
void Show88(unsigned char lin,unsigned char column,unsigned int address)

//显示8*16字符
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-15)
//character:字符代码(标准ASCII码)
void ShowChar(unsigned char lin,unsigned char column,unsigned char character)

//显示8*16字符串
//!!!只能显示在一行上即: 串长+column <=15
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-15)
//address : 字模区首地址
void ShowString(unsigned char lin,unsigned char column, unsigned char *string)

//显示一个汉字
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-15)
//hzcode: 汉字代码(自定义的)
void ShowHZ(unsigned char lin,unsigned char column,unsigned int hzcode)

//显示图片
//旋转90度   :字模被竖着切分
//startline  :开始行
//startcolumn:开始列
//linechar   :图片行点除8(图片以8*8点阵为单位)
//columnchar :图片列点除8(图片以8*8点阵为单位)
//address    : 字模区首地址
void ShowPicture(unsigned char startline,unsigned char startcolumn,unsigned char linechar,unsigned char columnchar,unsigned int address)
//!!问题大户
//显示一行汉字
//lin:行
//lineheadaddr: 此行汉字代码区首地址
void ShowLine(unsigned char lin,unsigned int lineheadaddr)

//显示一屏汉字
//pageheadaddr:此屏汉字代码地址区首地址
void ShowPage(unsigned int pageheadaddr)

//反显一个8*8字块
//lin:行(0-3), column: 列(0-7)
void ReverseShow88(unsigned char lin,unsigned char column)


//反显一个字符
//lin:行(0-4), column: 列(0-15)
void ReverseShowChar(unsigned char lin,unsigned char column)


//反显一个汉字
//lin:行(0-3), column: 列(0-7)
ReverseShowHZ(unsigned char lin,unsigned char column)

//反显一行汉字
//lin:行
ReverseShow(unsigned char lin)

//初始化LCD
void InitLCD()

****函数列表结束****   */
/*----------------------------------------------------------------------------------------------------*/
/*--基本函数源程序------------------------------------------------------------------------------------*/
//延时
Lcd12864delay()
{
unsigned int i=500;
while(i--)  {;}
}
/*----------------------------------------------------------------------------------------------------*/
//状态检查
void CheckState()
{
   unsigned char dat;
   di=0;
   rw=1;
do{
      LCD12864DataPort=0xff;
      en=1; dat=LCD12864DataPort; en=0;
      dat=0x90 & dat;  //仅当第4,7位为0时才可操作
    }while(!(dat==0x00));
}
/*----------------------------------------------------------------------------------------------------*/
//写显示数据
//dat:显示数据
void WriteByte(unsigned char dat)
{
  CheckState();
  di=1; rw=0;
  LCD12864DataPort=dat;
  en=1; en=0;
}
/*-----------------------------------------------------------------------------------------------------*/
//向LCD发送命令
//command :命令
SendCommandToLCD(unsigned char command)
{
  CheckState();
  rw=0;
  LCD12864DataPort=command;
  en=1;  en=0;
}
/*----------------------------------------------------------------------------------------------------*/
//设定行地址(页)--X 0-7
void SetLine(unsigned char line)
{
       line=line & 0x07;   // 0<=line<=7
       line=line|0xb8; //1011 1xxx
       SendCommandToLCD(line);
}
//设定列地址--Y 0-63
void SetColumn(unsigned char column)
{
       column=column &0x3f;   // 0=<column<=63
       column=column | 0x40;  //01xx xxxx
       SendCommandToLCD(column);
}
//设定显示开始行--XX
void SetStartLine(unsigned char startline)  //0--63
{
       startline=startline & 0x07;
       startline=startline|0xc0; //1100 0000
       SendCommandToLCD(startline);
}
//开关显示
void SetOnOff(unsigned char onoff)
{
     onoff=0x3e | onoff; //0011 111x
     SendCommandToLCD(onoff);
}
/*---------------------------------------------------------------------------------------------------*/
//选择屏幕
//screen: 0-全屏,1-左屏,2-右屏
void SelectScreen(unsigned char screen)
{  //北京显示器:负有效  cs1: 0--右; cs2: 0--左
   switch(screen)
    { case 0:  cs1=1;//全屏
               cs2=1; break;
      case 1:  cs1=1;//左屏
               cs2=0; break;
      case 2:  cs1=0;//右屏
               cs2=1; break;
    }
}
/*---------------------------------------------------------------------------------------------------*/
//清屏
//screen: 0-全屏,1-左屏,2-右
void ClearScreen(unsigned char screen)
{  unsigned char i,j;
   SelectScreen(screen);
    for(i=0;i<8;i++)
    { SetLine(i);
          for(j=0;j<64;j++)
         {
            WriteByte(0x00);
         }
     }
}
/*--------------------------------------------------------------------------------------------------*/
//显示8*8点阵
//旋转90度:字模被竖着切分
//lin:行(0-7), column: 列(0-15)
//address : 字模区首地址
void Show88(unsigned char lin,unsigned char column,unsigned int address)
{   unsigned char i;
    if(column>16) {return;}
    if(column<8)  SelectScreen(1); //如果列数<8(0,1,2,3,4,5,6,7)则写在第一屏上
    else  {
            SelectScreen(2);       //否则      (8,9,10,11,12,13,14,15)写在第二屏上
            column=column & 0x07;  //防止越界
          }
    SetLine(lin);
    SetColumn(column<<3);
    for(i=0;i<8;i++)  WriteByte( CBYTE[address+i] );
}
/*------------------------------------------------------------------------------------------------*/
//显示8*16字符
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-15)
//character:字符代码(标准ASCII码)
void ShowChar(unsigned char lin,unsigned char column,unsigned char character)
{     lin=lin<<1;
      Show88(lin  ,column,ASCII816[character-0x20] );
      Show88(lin+1,column,ASCII816[character-0x20]+8 );
}
/*-----------------------------------------------------------------------------------------------*/
/*
//显示8*16字符串
//!!!只能显示在一行上即: 串长+column <=15
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-15)
//address : 字模区首地址
void ShowString(unsigned char lin,unsigned char column, unsigned char *string)
{      unsigned char ch;
       unsigned char i=0;

         while(*string!='\0')
	{
        	ch=*string;
                if(i+column >15) break; //(只能显示在一行上即: 串长+column <=15)
		ShowChar(lin,i+column,ch);
		string++; i++;
        }
}
*/
/*----------------------------------------------------------------------------------------------*/
//显示一个汉字
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-7)
//hzcode: 汉字代码(自定义的)
//uchar code HZtable
void ShowHZ(unsigned char lin,unsigned char column,unsigned int hzcode)
{
   lin=lin<<1;          //lin*2

   Show88(lin,column,HZTable[hzcode]);
   Show88(lin,column+1,HZTable[hzcode]+8);
   Show88(lin+1,column,HZTable[hzcode]+16);
   Show88(lin+1,column+1,HZTable[hzcode]+24);
}
/*----------------------------------------------------------------------------------------------*/
//显示图片
//旋转90度   :字模被竖着切分
//startline  :开始行
//startcolumn:开始列
//linechar   :图片行点除8(图片以8*8点阵为单位)
//columnchar :图片列点除8(图片以8*8点阵为单位)
//address    : 字模区首地址
void ShowPicture(unsigned char startline,unsigned char startcolumn,unsigned char linechar,unsigned char columnchar,unsigned int address)
{   unsigned char i,j;
     for(i=0;i<columnchar;i++)
        for(j=0;j<linechar;j++)
            Show88(startline+i , startcolumn+j , address+(i*linechar+j)*8 );
}
/*----------------------------------------------------------------------------------------------*/
//显示一行字符串(汉字,字母混排,一行16字节)
//lin:行
//lineheadaddr: 此行汉字代码区首地址
void ShowLine(unsigned char lin,unsigned char linehead[])
{     unsigned char i;
      unsigned char byte;
      unsigned int hzcode;
   for( i=0; i<16; )
       {  byte=linehead[i];
          if(byte < 0x80)  //字母
                {
                   if(i>15) return;   //!!编译器有问题,须强制退出

                 ShowChar(lin, i , byte);
                  i=i+1;

                }
          else    // byte >= 0x80(汉字)
               {
                  if(i>15) return; //!!编译器有问题,须强制退出

                  byte=byte & 0x7f;  //最高位置0,即:减去0x8000
                  hzcode=(unsigned int)byte<<8;    //??        //高8位
                  hzcode=hzcode+linehead[i+1]; //加低8位,组合成整型数地址
                  ShowHZ( lin,i,hzcode);
                  i=i+2;
               }
       }
}
/*----------------------------------------------------------------------------------------------------*/
//显示一屏汉字
//pageheadaddr:此屏汉字代码地址区首地址
void ShowPage(unsigned char pagehead[][16])
{  unsigned char i;
  for(i=0;i<4;i++)    ShowLine(i,pagehead[i]); //1行8个汉字,16字节
}
/*----------------------------------------------------------------------------------------------------*/
//读显示数据
unsigned char ReadByte()
{
  unsigned char dat;
  CheckState();
  di=1; rw=1;
  LCD12864DataPort=0xff;
  en=1;  dat=LCD12864DataPort;  en=0;
  return(dat);
}

/*----------------------------------------------------------------------------------------------------*/
//反显一个8*8字块
//lin:行(0-3), column: 列(0-7)
void ReverseShow88(unsigned char lin,unsigned char column)
{  unsigned char i;
   unsigned char tab[8];

       if(column<8)  SelectScreen(1); //如果列数<4(0,1,2,3),则写在第一屏上
       else          SelectScreen(2); //否则      (4,5,6,7),  写在第二屏上
//读上部8列
        column=column<<3;       //每个方块8*8大小
        SetLine(lin);
        SetColumn(column);
        tab[0]=ReadByte();  //空读!!!!!             //?
        for(i=0;i<8;i++)  tab[i]=~ReadByte();
   //写回
        SetLine(lin);
        SetColumn(column);
        for(i=0;i<8;i++)  WriteByte(tab[i]);
}
/*----------------------------------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------------------------------*/
//反显一个字符
//lin:行(0-4), column: 列(0-15)
void ReverseShowChar(unsigned char lin,unsigned char column)
{  lin=lin<<1;
   ReverseShow88(lin  ,column);
   ReverseShow88(lin+1,column);
}
/*----------------------------------------------------------------------------------------------------*/
//反显一个汉字
//lin:行(0-3), column: 列(0-7)
ReverseShowHZ(unsigned char lin,unsigned char column)
{
  lin=lin<<1;
  column=column<<1;
  ReverseShow88(lin  ,column  );
  ReverseShow88(lin  ,column+1);
  ReverseShow88(lin+1,column  );
  ReverseShow88(lin+1,column+1);
}
/*----------------------------------------------------------------------------------------------------*/
//反显一行汉字
//lin:行
ReverseShow(unsigned char lin)
{    unsigned char i;
  for(i=0;i<8;i++)   ReverseShowHZ(lin,i);
}
/*----------------------------------------------------------------------------------------------------*/
void InitLCD()   //初始化LCD
{  unsigned char i=250; //延时
   while(i--);

   //reset=0;//复位
   //reset=1;

   SelectScreen(0);
   SetOnOff(0); //关显示

   ClearScreen(1);//清屏
   ClearScreen(2);

   SelectScreen(0);
   SetOnOff(1); //开显示
   SelectScreen(0);
   SetStartLine(0); //开始行:0
}
/*----------------------------------------------------------------------------------------------------*/