//Multi-Inno MI0283QT-1 (R61505U) - http://www.watterott.net


//#define LCD_MIRROR         //define to mirror the display
#define LCD_WIDTH            (320)
#define LCD_HEIGHT           (240)
#define RGB(r,g,b)           (((r&0xF8)<<8)|((g&0xFC)<<3)|((b&0xF8)>>3)) //5 red | 6 green | 5 blue

#define LCD_ID               (0)
#define LCD_DATA             ((0x72)|(LCD_ID<<2))
#define LCD_REGISTER         ((0x70)|(LCD_ID<<2))

#define LCD_RST_DISABLE()    RST high
#define LCD_RST_ENABLE()     RST low
#define LCD_CS_DISABLE()     CS high
#define LCD_CS_ENABLE()      CS low


void lcd_clear(unsigned int color)
{
  unsigned int i;

  lcd_area(0, 0, (LCD_WIDTH-1), (LCD_HEIGHT-1));

  lcd_drawstart();
  for(i=(LCD_WIDTH*LCD_HEIGHT/8); i!=0; i--)
  {
    lcd_draw(color); //1
    lcd_draw(color); //2
    lcd_draw(color); //3
    lcd_draw(color); //4
    lcd_draw(color); //5
    lcd_draw(color); //6
    lcd_draw(color); //7
    lcd_draw(color); //8
  }
  lcd_drawstop();

  return;
}


void lcd_draw(unsigned int color)
{
  spi_write(color>>8);
  spi_write(color);

  return;
}


void lcd_drawstop(void)
{
  spi_wait();
  LCD_CS_DISABLE();

  return;
}


void lcd_drawstart(void)
{
  LCD_CS_ENABLE();
  spi_write(LCD_REGISTER);
  spi_write(0x00);
  spi_write(0x22);
  spi_wait();
  LCD_CS_DISABLE();

  LCD_CS_ENABLE();
  spi_write(LCD_DATA);

  return;
}


void lcd_area(unsigned int x0, unsigned int y0, unsigned int x1, unsigned int y1)
{
#if defined(LCD_MIRROR)
  lcd_cmd(0x50, (LCD_HEIGHT-1)-y1); //set y0
  lcd_cmd(0x51, (LCD_HEIGHT-1)-y0); //set y1
  lcd_cmd(0x52, (LCD_WIDTH-1)-x1);  //set x0
  lcd_cmd(0x53, (LCD_WIDTH-1)-x0);  //set x1
#else
  lcd_cmd(0x50, y0);   //set y0
  lcd_cmd(0x51, y1);   //set y1
  lcd_cmd(0x52, x0);   //set x0
  lcd_cmd(0x53, x1);   //set x1
#endif

  //set cursor
  lcd_cursor(x0, y0);

  return;
}


void lcd_cursor(unsigned int x, unsigned int y)
{
#if defined(LCD_MIRROR)
  lcd_cmd(0x20, (LCD_HEIGHT-1)-y); //set y
  lcd_cmd(0x21, (LCD_WIDTH-1)-x);  //set x
#else
  lcd_cmd(0x20, y); //set y
  lcd_cmd(0x21, x); //set x
#endif

  return;
}


void lcd_cmd(unsigned int reg, unsigned int param)
{
  LCD_CS_ENABLE();
  spi_write(LCD_REGISTER);
  spi_write(reg>>8);
  spi_write(reg);
  spi_wait();
  LCD_CS_DISABLE();

  lcd_data(param);

  return;
}


void lcd_data(unsigned int c)
{
  LCD_CS_ENABLE();
  spi_write(LCD_DATA);
  spi_write(c>>8);
  spi_write(c);
  spi_wait();
  LCD_CS_DISABLE();

  return;
}


void lcd_reset(void)
{
  //reset
  LCD_CS_DISABLE();
  LCD_RST_ENABLE();
  delay_ms(50);
  LCD_RST_DISABLE();
  delay_ms(50);

  //display power control
  lcd_cmd(0x00, 0x0000);
  lcd_cmd(0x07, 0x0001);
  delay_ms(5);
  lcd_cmd(0x07, 0x0101);
  lcd_cmd(0x17, 0x0001); //PSE=1
  delay_ms(5);
  lcd_cmd(0x19, 0x0000);
  delay_ms(5);
  lcd_cmd(0x10, 0x10B0);
  lcd_cmd(0x11, 0x0007);
  lcd_cmd(0x12, 0x011B); //PON=1
  lcd_cmd(0x13, 0x0B00);
  //lcd_cmd(0x29, 0x0012); //VCM1
  //lcd_cmd(0x2A, 0x0095); //VCM2
  delay_ms(5);
  lcd_cmd(0x12, 0x013B); //PSON=1
  delay_ms(5);
  //lcd_cmd(0x01, 0x0100); //mirror
  lcd_cmd(0x60, 0x2700);
  lcd_cmd(0x61, 0x0001);

  //display on
  lcd_cmd(0x07, 0x0021);
  delay_ms(5);
  lcd_cmd(0x07, 000061);
  delay_ms(5);
  lcd_cmd(0x07, 0x0173);
  delay_ms(5);

  //display options
#if defined(LCD_MIRROR)
  lcd_cmd(0x03, 0x1008); //entry mode
#else
  lcd_cmd(0x03, 0x1038); //entry mode
#endif

  lcd_area(0, 0, (LCD_WIDTH-1), (LCD_HEIGHT-1));

  return;
}