/*12864中文字庫測試程
廣東省深圳市福田區
軟件作者:駱瑤
聯系電話:0755-83627474,15818661874
QQ:53194416,MSN:luoyao409@163.com
*/

#include <stdio.h>
#include <math.h>
#include <reg52.h>
#include <string.h>

unsigned char code IC_DAT[];
unsigned char code pic1[];
unsigned char code pic2[];
unsigned char code pic3[];


sbit    CS =P0^0;
sbit    SID=P0^1;
sbit    SCK=P0^2;
sbit    PSB=P0^4;
sbit    RES=P0^5;

void    TransferCom(unsigned char data0);
void    TransferData(unsigned char data1);
void    display(void);
void    display_grapic(void);
void    delayms(unsigned int n);
void    DisplayLine(unsigned char line1,unsigned char line2);
void    DisplayGraphic(unsigned char code *adder);
void    delay(unsigned int m);
void    lcd_mesg(unsigned char code *adder1);


unsigned char code IC_DAT[]={
0XB9,0XE3,  0XCA,0XA1,  0xC9,0xEE,  0XDB,0XDA,  0XCA,0XD0,  0XB8,0XA3,  0XCC,0XEF,  0XC7,0XF8,  //顯示第一行:廣東深圳市福田區
0XD6,0XD0,  0XCE,0XC4,  0XD7,0XD6,  0XBF,0XE2,  0XD2,0XBA,  0XBE,0XA7,  0XC4,0XA3,  0XBF,0XE9,  //顯示第三行:中文字庫液晶模塊
0x31,0x32,  0x38,0x36,  0x34,0x2D,  0XB4,0XF8,  0XD6,0XD0,  0XCE,0XC4,  0XD7,0XD6,  0XBF,0XE2,  //顯示第二行:12864-帶中文字庫
0X53,0X54,  0X37,0X39,  0X32,0X30,  0XBC,0XF2,  0XCC,0XE5,  0XBA,0XBA,  0XD7,0XD6,  0XBF,0XE2,  //顯示第四行:ST7920簡體漢字庫
};
unsigned char code IC_DAT2[]={
0XB9,0XE3,  0XCA,0XA1,  0xC9,0xEE,  0XDB,0XDA,  0XCA,0XD0,  0XB8,0XA3,  0XCC,0XEF,  0XC7,0XF8,  //顯示第一行:廣東深圳市福田區
0x31,0x32,  0x38,0x36,  0x34,0x2D,  0XB4,0XF8,  0XD6,0XD0,  0XCE,0XC4,  0XD7,0XD6,  0XBF,0XE2,  //顯示第二行:12864-帶中文字庫
0XD6,0XD0,  0XCE,0XC4,  0XD7,0XD6,  0XBF,0XE2,  0XD2,0XBA,  0XBE,0XA7,  0XC4,0XA3,  0XBF,0XE9,  //顯示第三行:中文字庫液晶模塊
0X53,0X54,  0X37,0X39,  0X32,0X30,  0XBC,0XF2,  0XCC,0XE5,  0XBA,0XBA,  0XD7,0XD6,  0XBF,0XE2,  //顯示第四行:ST7920簡體漢字庫
};

void     initinal(void)           //LCD字庫初始化程序
          {
           delay(40);             //大于40MS的延時程序
           PSB=0;                 //設置為8BIT并口工作模式
           delay(1);              //延時
           RES=0;                 //復位
           delay(1);              //延時
           RES=1;                 //復位置高
           delay(10);

           TransferCom(0x30);  //Extended Function Set :8BIT設置,RE=0: basic instruction set, G=0 :graphic display OFF
           delay(100);            //大于100uS的延時程序
           TransferCom(0x0C);  //Display Control,D=1,顯示開
           delay(100);            //大于100uS的延時程序
           TransferCom(0x01);  //Display Clear
           delay(10);             //大于10mS的延時程序
           TransferCom(0x06);  //Enry Mode Set,光標從右向左加1位移動
           delay(100);            //大于100uS的延時程序
          }


void     initina2(void)           //LCD顯示圖片(擴展)初始化程序
          {
           delay(40);             //大于40MS的延時程序
           PSB=0;                 //設置為8BIT并口工作模式
           delay(1);              //延時
           RES=0;                 //復位
           delay(1);              //延時
           RES=1;                 //復位置高
           delay(10);

           TransferCom(0x36);  //Extended Function Set RE=1: extended instruction
           delay(100);            //大于100uS的延時程序
           TransferCom(0x36);  //Extended Function Set:RE=1: extended instruction set
           delay(37);             ////大于37uS的延時程序
           TransferCom(0x3E);  //EXFUNCTION(DL=8BITS,RE=1,G=1)
           delay(100);            //大于100uS的延時程序
           TransferCom(0x01);  //CLEAR SCREEN
           delay(100);            //大于100uS的延時程序
          }


void    main(void)
     {
         while(1)
	    {
	  	  initina2();            //調用LCD顯示圖片(擴展)初始化程序
          DisplayGraphic(pic1);  //顯示圖片1
          delayms(200);

          DisplayGraphic(pic2);  //顯示圖片2
          delayms(200);

          DisplayGraphic(pic3);  //顯示圖片3
          delayms(200);

          initinal();   	 	 //調用LCD字庫初始化程序
          delay(100);            //大于100uS的延時程序
          lcd_mesg(IC_DAT);      //顯示中文漢字1
          delayms(100);

          lcd_mesg(IC_DAT2);     //顯示中文漢字2
          delayms(100);
        }
      }



void   lcd_mesg(unsigned char code *adder1)
{
	unsigned char i;
        TransferCom(0x80);  //Set Graphic Display RAM Address
        delay(100);
	for(i=0;i<32;i++)
		{
	  		TransferData(*adder1);
	   		adder1++;
		}

        TransferCom(0x90);  //Set Graphic Display RAM Address
        delay(100);
	for(i=16;i<64;i++)
		{
	  		TransferData(*adder1);
	   		adder1++;
		}
}

void SendByte(unsigned char Dbyte)
{
     unsigned char i;
     for(i=0;i<8;i++)
     {
           SCK = 0;
           Dbyte=Dbyte<<1;      //左移一位
           SID = CY;            //移出的位給SID
           SCK = 1;
           SCK = 0;
     }
}

void    TransferCom(unsigned char data0)  
          {

              CS=1;
              SendByte(0xf8);            //11111,RW(0),RS(1),0
              SendByte(0xf0&data0);      //高四位
              SendByte(0xf0&data0<<4);   //低四位(先執行<<)
              CS=0;
             
           }


void    TransferData(unsigned char data1)  
          {

              CS=1;
              SendByte(0xfa);            //11111,RW(0),RS(1),0
              SendByte(0xf0&data1);      //高四位
              SendByte(0xf0&data1<<4);   //低四位(先執行<<)
              CS=0;
             
           }

void    delayms(unsigned int n)          //延時10×n毫秒程序
                   {
                      unsigned int i,j;
                      for(i=0;i<n;i++)
                         for(j=0;j<2000;j++);
                   }

void    delay(unsigned int m)            //延時程序
                   {
                      unsigned int i,j;
                      for(i=0;i<m;i++)
                         for(j=0;j<10;j++);
                   }

void DisplayGraphic(unsigned char code *adder)
{

   int i,j;
//*******顯示上半屏內容設置
   for(i=0;i<32;i++)              //
    {
      TransferCom((0x80 + i)); //SET  垂直地址 VERTICAL ADD
      TransferCom(0x80);       //SET  水平地址 HORIZONTAL ADD
      for(j=0;j<16;j++)
       {
         TransferData(*adder);
         adder++;
       }
    }
//*******顯示下半屏內容設置
   for(i=0;i<32;i++)              //
    {
      TransferCom((0x80 + i)); //SET 垂直地址 VERTICAL ADD
      TransferCom(0x88);       //SET 水平地址 HORIZONTAL ADD
      for(j=0;j<16;j++)
       {
         TransferData(*adder);
         adder++;