TFT2.4-Shield-v2

/*================================================================
This demo code shows how to use the touch screen in TFT01
The LCD connection is the same as that in “8 Bit Pant Demo“
 
by Elecfreaks
================================================================*/
 
#define LCD_RS   19         
#define LCD_WR   18     
#define LCD_CS   17       
#define LCD_REST 16

#define DCLK     15
#define DIN      14 
#define CS       8  
#define DOUT     9
//#define IRQ      8    

unsigned int TP_X,TP_Y;    
unsigned int TouchCount=0;
 int  pacy=0;
 
 
 
void spistar()                                     //SPI Start
{
  digitalWrite(CS,LOW);
  digitalWrite(DCLK,HIGH);
  digitalWrite(DIN,HIGH);
  digitalWrite(DCLK,HIGH);
 
}
//**********************************************************
void WriteCharTo7843(unsigned char num)          //SPI Write Data
{
  unsigned char count=0;
  unsigned char temp;
  unsigned nop;
  temp=num;
  digitalWrite(DCLK,LOW);
  for(count=0;count<8;count++)
  {
    if(temp&0x80)
      digitalWrite(DIN,HIGH);
    else
      digitalWrite(DIN,LOW);
 
    temp=temp<<1; 
 
    digitalWrite(DCLK,LOW);                
    nop++;
    nop++;
    digitalWrite(DCLK,HIGH);
    nop++;
    nop++;
  }
}
 
//**********************************************************
unsigned int ReadFromCharFrom7843()             //SPI Read Data
{ 
  unsigned nop;
  unsigned char count=0;
  unsigned int Num=0;
  for(count=0;count<12;count++)
  {
    Num<<=1;
    digitalWrite(DCLK,HIGH);//DCLK=1; _nop_();_nop_();_nop_();                
    nop++;
    digitalWrite(DCLK,LOW);//DCLK=0; _nop_();_nop_();_nop_();
    nop++;
    if(digitalRead(DOUT)) Num++;
  }
  return(Num);
}
 
 
 
void LCD_Writ_Bus(char VH,char VL)   
{   
  PORTD = VH;
  digitalWrite(LCD_WR,LOW);
  digitalWrite(LCD_WR,HIGH);
  PORTD = VL;
  digitalWrite(LCD_WR,LOW);
  digitalWrite(LCD_WR,HIGH);
}
 
 
void LCD_Write_COM(char VH,char VL)  
{   
  digitalWrite(LCD_RS,LOW);
  LCD_Writ_Bus(VH,VL);
}
 
 
void LCD_Write_DATA(char VH,char VL)    
{
  digitalWrite(LCD_RS,HIGH);
  LCD_Writ_Bus(VH,VL);
}
 
void Lcd_Write_Com_Data(int com,int val)		   //发送数据命令
{
    LCD_Write_COM(com>>8,com);
    LCD_Write_DATA(val>>8,val);
}
 
void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
  LCD_Write_COM(0x00,0x46);LCD_Write_DATA(x2,x1);	  
  LCD_Write_COM(0x00,0x47);LCD_Write_DATA(y2>>8,y2);  
  LCD_Write_COM(0x00,0x48);LCD_Write_DATA(y1>>8,y1);
  LCD_Write_COM(0x00,0x20);LCD_Write_DATA(x1>>8,x1);	  
  LCD_Write_COM(0x00,0x21);LCD_Write_DATA(y1>>8,y1); 
  LCD_Write_COM(0x00,0x22);		         				 
}
 
void LCD_Init(void)
{
 
  digitalWrite(LCD_REST,HIGH);
  delay(5); 
  digitalWrite(LCD_REST,LOW);
  delay(5);
  digitalWrite(LCD_REST,HIGH);
  delay(5);
 
  digitalWrite(LCD_CS,LOW);  
        Lcd_Write_Com_Data(0x11,0x2004);		
        Lcd_Write_Com_Data(0x13,0xCC00);		
        Lcd_Write_Com_Data(0x15,0x2600);	
	Lcd_Write_Com_Data(0x14,0x252A);			
	Lcd_Write_Com_Data(0x12,0x0033);		
	Lcd_Write_Com_Data(0x13,0xCC04);		
	delay(1); 
	Lcd_Write_Com_Data(0x13,0xCC06);		
	delay(1); 
	Lcd_Write_Com_Data(0x13,0xCC4F);		
	delay(1); 
	Lcd_Write_Com_Data(0x13,0x674F);
	Lcd_Write_Com_Data(0x11,0x2003);
	delay(1); 	
	Lcd_Write_Com_Data(0x30,0x2609);		
	Lcd_Write_Com_Data(0x31,0x242C);		
	Lcd_Write_Com_Data(0x32,0x1F23);		
	Lcd_Write_Com_Data(0x33,0x2425);		
	Lcd_Write_Com_Data(0x34,0x2226);		
	Lcd_Write_Com_Data(0x35,0x2523);		
	Lcd_Write_Com_Data(0x36,0x1C1A);		
	Lcd_Write_Com_Data(0x37,0x131D);		
	Lcd_Write_Com_Data(0x38,0x0B11);		
	Lcd_Write_Com_Data(0x39,0x1210);		
	Lcd_Write_Com_Data(0x3A,0x1315);		
	Lcd_Write_Com_Data(0x3B,0x3619);		
	Lcd_Write_Com_Data(0x3C,0x0D00);		
	Lcd_Write_Com_Data(0x3D,0x000D);		
	Lcd_Write_Com_Data(0x16,0x0007);		
	Lcd_Write_Com_Data(0x02,0x0013);		
	Lcd_Write_Com_Data(0x03,0x0003);		
	Lcd_Write_Com_Data(0x01,0x0127);		
	delay(1); 
	Lcd_Write_Com_Data(0x08,0x0303);		
	Lcd_Write_Com_Data(0x0A,0x000B);		
	Lcd_Write_Com_Data(0x0B,0x0003);   
	Lcd_Write_Com_Data(0x0C,0x0000);   
	Lcd_Write_Com_Data(0x41,0x0000);    
	Lcd_Write_Com_Data(0x50,0x0000);   
	Lcd_Write_Com_Data(0x60,0x0005);    
        Lcd_Write_Com_Data(0x70,0x000B);    
	Lcd_Write_Com_Data(0x71,0x0000);    
	Lcd_Write_Com_Data(0x78,0x0000);    
	Lcd_Write_Com_Data(0x7A,0x0000);   
	Lcd_Write_Com_Data(0x79,0x0007);		
	Lcd_Write_Com_Data(0x07,0x0051);   
	delay(1); 	
	Lcd_Write_Com_Data(0x07,0x0053);		
	Lcd_Write_Com_Data(0x79,0x0000);
 
	LCD_Write_COM(0x00,0x22);
  digitalWrite(LCD_CS,HIGH);  
 
}
 
void Pant(char VH,char VL)
{
  int i,j;
  digitalWrite(LCD_CS,LOW); 
  Address_set(0,0,240,320);
  for(i=0;i<=320;i++)
  {
    for (j=0;j<=240;j++)
    {
      LCD_Write_DATA(VH,VL);
    }
  }
  digitalWrite(LCD_CS,HIGH);  
}
 
 
void AD7843(void)              
{
  digitalWrite(CS,LOW);                    
  WriteCharTo7843(0x90);        
  digitalWrite(DCLK,HIGH);
  digitalWrite(DCLK,LOW); 
  TP_Y=ReadFromCharFrom7843();
  WriteCharTo7843(0xD0);      
  digitalWrite(DCLK,HIGH);
  digitalWrite(DCLK,LOW);
  TP_X=ReadFromCharFrom7843();
  digitalWrite(CS,HIGH);
}
 
 
 
 
void setup()
{
 
  unsigned char p;
  int i,j,k;
  for(p=0;p<20;p++)
  {
    pinMode(p,OUTPUT);
  }
  pinMode(DOUT,INPUT);
//  pinMode(IRQ,INPUT);
 
  LCD_Init();  
  Pant(0x00,0x00);   
}
 
void loop()
{  TouchCount++; 
  unsigned char flag;
  unsigned char ss[6];	
  unsigned int lx,ly;
   spistar();  
  if(TouchCount==200)
  {
      pacy=random(0, 7);  
      TouchCount=0;
  }

//  while(digitalRead(IRQ)==0)
//  {  	
      digitalWrite(LCD_CS,LOW); 
      AD7843();
      lx=240-((TP_X-220)/16);
      ly=320-((TP_Y-400)/11);
      Address_set(lx,ly,lx+2,ly+2);
      switch(pacy)
                                {
                                  case 0: for(int i=0; i<5; i++)  LCD_Write_DATA(0xF8,0x00);  break;   //Red
                                  case 1: for(int i=0; i<5; i++)  LCD_Write_DATA(0xFF,0xE0);  break;   //Yellow
                                  case 2: for(int i=0; i<5; i++)  LCD_Write_DATA(0xFF,0xFF);  break;   //White 
                                  case 3: for(int i=0; i<5; i++)  LCD_Write_DATA(0x05,0x1F);  break;   //Blue
                                  case 4: for(int i=0; i<5; i++)  LCD_Write_DATA(0x00,0x1F);  break;   //Blue-2
                                  case 5: for(int i=0; i<5; i++)  LCD_Write_DATA(0xF8,0x1F);  break;   //Magenta
                                  case 6: for(int i=0; i<5; i++)  LCD_Write_DATA(0x07,0xE0);  break;   //Green
                                  case 7: for(int i=0; i<5; i++)  LCD_Write_DATA(0x7F,0xFF);  break;   //Cyan
                                  defoult:for(int i=0; i<5; i++)  LCD_Write_DATA(0x00,0x00);  break;   //Black
                                }
      digitalWrite(LCD_CS,HIGH); 
//    }
}