//***************************************************************
//
//*****    Focus LCDs     *****
//***** LCDs Made Simple  *****
//***** www.FocusLCDs.com *****
//
//***************************************************************
//
//NOTE:VCI=3.3V,
//****************************************************************
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;
}
//***************************************************************
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;
}

/*************************************************/
void initi(void)
{ 
   res=1;
   delay(1);
   res=0;
   delay(10);
   res=1;
   delay(120);
//************************************************

write_command(0x36);
write_data(0xC0);

write_command(0xE4); //Gate Line Control
write_data(0x27);
write_data(0x00);
write_data(0x10);

write_command(0xB7); //Gate control
write_data(0x75);

write_command(0xb8); //Gate On Timing Adjustment
write_data(0x2A);
write_data(0x2B);
write_data(0x09);

write_command(0xBB); //VCOMS Setting
write_data(0x0D); //VCOMS=0.425V

write_command(0x0C); //LCM Control
write_data(0x2C);

write_command(0xC2); //
write_data(0x01);

write_command(0xC3); //VRH Set
write_data(0x1D);

write_command(0xC4); //VDV Set
write_data(0x20);

write_command(0xc6);
write_data(0x07);

write_command(0xd0);
write_data(0xa4);
write_data(0x31);

//--------------------------------ST7789S gamma setting---------------------------------------//
write_command(0xe0);
write_data(0xd0);
write_data(0x10);
write_data(0x0A);
write_data(0x0A);
write_data(0x0A);
write_data(0x10);
write_data(0x26);
write_data(0x42);
write_data(0x3E);
write_data(0x36);
write_data(0x13);
write_data(0x34);
write_data(0x18);
write_data(0x1B);

write_command(0xe1);
write_data(0xd0);
write_data(0x10);
write_data(0x0A);
write_data(0x0A);
write_data(0x0A);
write_data(0x10);
write_data(0x26);
write_data(0x42);
write_data(0x3E);
write_data(0x36);
write_data(0x13);
write_data(0x34);
write_data(0x18);
write_data(0x1B);


write_command(0xE8);
write_data(0x43);

write_command(0xE9);
write_data(0x08);
write_data(0x08);
write_data(0x08);

write_command(0x21); //·΄ΟΤ

//*********SET RGB Interfae***************
write_command(0xB0); 
write_data(0x11); //set RGB interface and DE mode.
write_data(0x00); 
write_data(0x00); 

write_command(0xB1); 
write_data(0x40); // set DE mode ; SET Hs,Vs,DE,DOTCLK signal polarity 
write_data(0x00); 
write_data(0x00); 

write_command(0x3A);
write_data(0x55); //16 RGB ,66-18BIT RGB

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

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);
}