#include <reg52.H>


#define TRUE  1
#define FALSE 0

sbit  CS1=  P3^0;     //0有效
sbit  CS2=  P3^1;
sbit  DI =  P3^2;    //1 data,0  instruction
sbit  RW =  P3^3;     //1  read,0 write

sbit  E  =  P3^4;    // 1 讀狀態(tài)，0 寫狀態(tài)，下降沿鎖存
sbit  RESET = P3^5;  //0 復(fù)位,1常態(tài)
sbit  Busy = P1^7;

//unsigned char COLUMN;

void Initial();
void Delay(unsigned int time);
bit  Q_Busy();
void Data_Write(unsigned char aa);
void Code_Write(unsigned char aa);
unsigned char Status_Read();
unsigned char Data_Read();
void location(unsigned y,unsigned x);
void Select_Chip1();
void Select_Chip2();
void Display_LcdWrite();
void Display_logo() ;
void test89();      //  測試89系統(tǒng)是否正常
void Lcd_Clear();

unsigned char code Logo9616[192];

//******************************************************
void main()
{

  // test89();
   Select_Chip1();
   Initial();
   Select_Chip2();
   Initial();

  
  while(1){
            Lcd_Clear();
            Display_LcdWrite();
         //   Display_logo() ;
            };

}

//初始化
void Initial()
{
   
   RESET=0;   //復(fù)位有效
   Delay(10000);
   RESET=1;
   Delay(10000);
 Code_Write(0x3e); //display off
   Delay(1000);
 Code_Write(0x40); //Sets the Y address in the Y address counter.
   Delay(1000);
 Code_Write(0xb8); //Sets the X address at the X address register.  
   Delay(1000);
 Code_Write(0xc0); //Z:Indicates the display data RAM displayed at the top of the screen.  
   Delay(1000);
 Code_Write(0x3f); //display on
   Delay(1000);
   
}
//延時(shí)
void Delay(unsigned int time)
{   



while(time)  time--;      /*delay time*/
}   


//查詢 busy與否狀態(tài)
bit Q_Busy()
{   
    bit kk;
    Status_Read();
	kk=Busy;
    return kk;    //1,busy;0,free;
}

//write  子程序：2個(gè)區(qū)分?jǐn)?shù)據(jù)命令
void Data_Write(unsigned char aa)
{
//  while(Q_Busy()){};
  DI=1;
  RW=0;
  P1=aa;          //作busy狀態(tài)查詢
  E=1;
  E=0;

}

void Code_Write(unsigned char aa)
{
//  while(Q_Busy()){};  //作busy狀態(tài)查詢
  DI=0;
  RW=0;
  P1=aa;     
  E=1;
  E=0;

}

//讀狀態(tài)
unsigned char Status_Read()
{
  unsigned char aa;
  P1=0xff;  //先寫ff，后查詢狀態(tài)
  DI=0;
  RW=1;
  E=1;
  aa=P1;   
  E=0;  
  return aa;

}
//讀數(shù)據(jù) 
unsigned char Data_Read()
{
  unsigned char aa;
 // while(Q_Busy()){};
  DI=1;
  RW=1;
  E=1;
  E=0;
  aa=0xff;
  E=1;
  aa=P1; 
  E=0;    
  return aa;

}
void location(unsigned y,unsigned x)//希望出現(xiàn)在y列,x頁這個(gè)位置
{
  y=y%128;
  x=x%8;     //一頁是對應(yīng)一個(gè)字節(jié)的8位
 
if(y>=64)
     {
       Select_Chip2();
       y=y-64;
       Code_Write(0x40+y); //Set Y 列
       Code_Write(0xb8+x); //Set X 頁 
       
       Delay(1000);
     }
else {
       Select_Chip1();
       Code_Write(0x40+y); //Sets Y
       Code_Write(0xb8+x); //X
      
       Delay(1000);     
     }
}
 
void Select_Chip1()
{
  CS1=1;CS2=0;
}

void Select_Chip2()
{
  CS1=0;CS2=1;
}
//==================
//在LCD上清屏
//==================
void Lcd_Clear()
{

	unsigned int i;
	unsigned int j;

 
 for(i=0;i<8;i++)
	{ 				
	  for(j=0;j<128;j++)
 		{
          location(j,i);    //j列，i 頁
		  Data_Write(0xff);//1,dark;0,light;	  	
		}
	 }

}
//==================
//在LCD上顯示寫過程
//==================
void Display_LcdWrite()
{

	unsigned int i;
	unsigned int j;

 
 for(i=0;i<4;i++)
	{ 				
	  for(j=0;j<130;j++)
 		{
          location(j,i*2);    //i 頁，j列
		  Data_Write(0x00);//1,dark;0,light;	  	
		}
	 }

}
//========================================================

void Display_logo()                   
{
	unsigned char z=0;
	unsigned char i;
	unsigned char j;

		for(i=0;i<16;i++)        //黑白圖像，數(shù)組值為0，為亮，一個(gè)字節(jié)的一位(從高到低)代表了一個(gè)像素點(diǎn)
		{
			for(j=0;j<12;j++)
			{
                z=j+(i/8)*12;
                location(z,i);
				Data_Write(Logo9616[i*12+j]);  //GD  16H*12L
			
			}
		}
	Delay(500);	
}

unsigned char code Logo9616[]={
 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,  //12列x16行
 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 0xF0,0x00,0x38,0x3F,0x80,0x1F,0xF8,0x00,0xFC,0x00,0x1F,0xFF,
 0x80,0x00,0x08,0x3F,0x80,0x0F,0xF8,0x00,0xF8,0x04,0x1F,0xFF,
 0x80,0x00,0x08,0x3F,0x80,0x0F,0xF0,0x00,0xF0,0x0C,0x1F,0xFF,
 0xC0,0x7E,0x08,0x3F,0x81,0x00,0x00,0x20,0xC0,0x1C,0x1F,0xFF,
 0xCF,0x80,0x08,0x3F,0x81,0x80,0x00,0x60,0x80,0x3C,0x00,0x07,
 0xF8,0x00,0x08,0x00,0x01,0xC0,0x00,0x60,0x00,0x0C,0x00,0x01,
 0xE0,0x00,0x18,0x00,0x01,0xC1,0xC0,0xE0,0x80,0x04,0x00,0x00,
 0xC0,0x00,0x78,0x00,0x01,0xE1,0x81,0xE0,0xFE,0x00,0x1F,0xC0,
 0xC0,0x1F,0xD8,0x3F,0x81,0xE0,0x01,0xE0,0xFF,0x00,0x1F,0xE0,
 0xC0,0xF8,0x18,0x3F,0x81,0xF0,0x03,0xE0,0x7E,0x00,0x1F,0x80,
 0xC0,0x00,0x08,0x3F,0x81,0xF8,0x03,0xE0,0x00,0x04,0x00,0x00,
 0xE0,0x00,0x08,0x3F,0x81,0xF8,0x07,0xE0,0x00,0x0C,0x00,0x01,
 0xF8,0x00,0x38,0x3F,0xC1,0xFE,0x1F,0xF0,0x00,0x7F,0x00,0x1F,
 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
};

//=================================================================
void test89()
{
  do{
    P1=0x0;
    Delay(60000);
	Delay(60000);
	Delay(60000);

    P1=0xff;
	Delay(60000);
	Delay(60000);
	Delay(60000);
     }while (1) ;
}