//VCI=3.3V
//***********************寄存器指令*****************************************
void write_command (unsigned char y) // (uchar y,uchar x)
{
  unsigned char i;
csb=0;
sclb=0;
sdi=0;
sclb=1;
for(i=0;i<8;i++)
    {
     sclb=0;      
      if (y&0x80)
       {
          sdi=1;
        }
          else
         {
          sdi=0;
         }
       sclb=1;
      y=y<<1;
    }
csb=1;
}
//**************************寄存器数据*************************************
void write_data(unsigned char w) // (uchar w, uchar v)
{
  unsigned char i;
csb=0;
sclb=0;
sdi=1;
sclb=1;
for(i=0;i<8;i++)
 {
  sclb=0;
     if (w&0x80)
     {
        sdi=1;
       }
          else
        {
         sdi=0;
        }
   sclb=1;
   w=w<<1;
    }
csb=1;
}


//********************送显示数据*********************************
void write_data2(unsigned char data_l,data_h)
{
 unsigned char a,i,b;
csb=0;
sclb=0;
sdi=1;
sclb=1;
a=data_l;
for(i=0;i<8;i++)
 {
    sclb=0;
     if (a&0x80) 
      {
        sdi=1; 
         }
          else
       { 
         sdi=0;
         }
  sclb=1;
   a=a<<1;
    }
csb=0;
sclb=0;
sdi=1;
sclb=1;
b=data_h;
for(i=0;i<8;i++)
 {
  sclb=0;
     if (b&0x80)
  {
        sdi=1;
}
          else
{
         sdi=0;
}
  sclb=1;
   b=b<<1;
    }
csb=1;
}
/*************************************************/
void initi(void)
{
   res=1;
   delay(1);
   res=0;
   delay(10);
   res=1;
   delay(120);

//--------------------------------ST7789 Frame rate setting----------------------------------// 
write_command(0xb2); 
write_data(0x0c); 
write_data(0x0c); 
write_data(0x00); 
write_data(0x33); 
write_data(0x33); 

write_command(0xb7); 
write_data(0x35); 
//---------------------------------ST7789S Power setting--------------------------------------// 
write_command(0x36); 
write_data(0x00); 

write_command(0xbb); 
write_data(0x2b);//vcom 

write_command(0xc2);
write_data(0x01); 
 
write_command(0xc3);//gvdd
write_data(0x0b); //调深浅12
                                                                                    
write_command(0xc4); 
write_data(0x20); 

write_command(0xc6); 
write_data(0x0f); 

write_command(0xd0); 
write_data(0xa4); 
write_data(0xa2); 
//--------------------------------ST7789S gamma setting---------------------------------------// 
write_command(0xe0); 
write_data(0xd0); 
write_data(0x00); 
write_data(0x03); 
write_data(0x08); 
write_data(0x0a); 
write_data(0x17); 
write_data(0x2e); 
write_data(0x44); 
write_data(0x3f); 
write_data(0x29); 
write_data(0x10); 
write_data(0x0e); 
write_data(0x14); 
write_data(0x18); 

write_command(0xe1); 
write_data(0xd0); 
write_data(0x00); 
write_data(0x03); 
write_data(0x08); 
write_data(0x0a); 
write_data(0x17); 
write_data(0x2e); 
write_data(0x44); 
write_data(0x3f); 
write_data(0x29); 
write_data(0x10); 
write_data(0x0e); 
write_data(0x14); 
write_data(0x18); 

write_command(0x3a); 
write_data(0x55); 

write_command(0x2A); //Frame rate control
write_data(0x00);
write_data(0x00);
write_data(0x00);
write_data(0xEF);

write_command(0x2B); //Display function control
write_data(0x00);
write_data(0x00);
write_data(0x01);
write_data(0x3F);

write_command(0x11); 
delay(120);   //Delay 120ms 

write_command(0x29); //display on
delay(25); 

write_command(0x2c); 

}

//*********************************************************************************************
void EnterSleep (void)
{
    write_command(0x28);
    delay(20);
    write_command(0x10);
  
  }

//*********************************************************
void ExitSleep (void)

 {
    write_command(0x11);
    delay(120);
    write_command(0x29);

   }

//******************地址窗口**********************************************
void LCD_BlockWrite (kal_uint16 startx,kal_uint16 starty,kal_uint16 endx,kal_uint16 endy)
{
        write_command(0x2A);
	write_data(((startx&0xFF00)>>8));
	write_data((startx&0xFF));
	write_data(((endx&0xFF00)>>8));
	write_data((endx&0xFF));

        write_command(0x2B);
	write_data(((starty&0xFF00)>>8));
	write_data((starty&0xFF));
	write_data(((endy&0xFF00)>>8));
	write_data((endy&0xFF));
	
	 write_command(0x2C);
}