NOTE:VCI=3.3V,使用RGB接口必需要用SPI对LCD进行初始化.
//************************指令*****************************
void write_command (unsigned char y) // (uchar y,uchar x)
{
  unsigned char i;
  cs=0;
  rs=0;
  for(i=0;i<8;i++)
    {
     scl=0;
      if (y&0x80)
        {
          sdi=1;
          }
          else
         {
          sdi=0;
      }
       scl=1;
      y=y<<1;
    }
cs=1;
}
//************************************数据***************************
void write_data(unsigned char w) // (uchar w, uchar v)
{
  unsigned char i;
cs=0;
rs=1;
for(i=0;i<8;i++)
 {
  scl=0;
     if (w&0x80)
 {
        sdi=1;
    }
         else
       {
         sdi=0;
         } 
        scl=1;
      w=w<<1;
    }
cs=1;
}
/*************************************************/
void initi(void)
{ 
   res=1;
   delay(1);
   res=0;
   delay(10);
   res=1;
   delay(120);
//--------------------------------ST7789S Frame rate setting----------------------------------//

write_command(0x36); 
write_data(0x00);

write_command(0x3a); 
write_data(0x60);

//----------ST7789S 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(0xbb); 
write_data(0x38); 

write_command(0xc0); 
write_data(0x2c); 

write_command(0xc2); 
write_data(0x01);
 
write_command(0xc3); 
write_data(0x1d); 

write_command(0xc4); 
write_data(0x20);
 
write_command(0xc6); 
write_data(0x0f); 

write_command(0xd0); 
write_data(0xa4); 
write_data(0xa1); 
//---------------ST7789S gamma setting-----------------------// 
write_command(0xe0); 
write_data(0xd0); 
write_data(0x1E); 
write_data(0x24); 
write_data(0x0A); 
write_data(0x0A); 
write_data(0x26); 
write_data(0x44); 
write_data(0x44); 
write_data(0x57); 
write_data(0x29); 
write_data(0x14); 
write_data(0x14); 
write_data(0x30); 
write_data(0x34); 

write_command(0xe1); 
write_data(0xd0); 
write_data(0x1E); 
write_data(0x23); 
write_data(0x0A); 
write_data(0x09); 
write_data(0x25); 
write_data(0x43); 
write_data(0x33); 
write_data(0x56); 
write_data(0x28); 
write_data(0x14); 
write_data(0x14); 
write_data(0x2F); 
write_data(0x34); 

write_command(0x21); 

//*********SET RGB Interfae***************
write_command(0xB0); 
write_data(0x11); //set RGB interface
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(0x11); 
delay(120);      //Delay 120ms 

write_command(0x29); //display on
write_command(0x2c); 

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

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

 {
    RGB_ON();
    delay(30);
    write_command(0x11);
    delay(120);
    write_command(0x29);

   }