calogerus

void LCD_write(uint8_t d) {
  // ILI9341 reads data pins when WR rises from LOW to HIGH (A1 pin on arduino)
  PORTC = PORTC & B11111101; // WR 0
  
  // data pins of ILI9341 connected to two arduino ports
  PORTD = (PORTD & B00000011) | ((d) & B11111100); 
  PORTB = (PORTB & B11111100) | ((d) & B00000011); 
  
  PORTC = PORTC | B00000010; // WR 1
}