Build using Creality Melzi Board and Display

Just finished a DIY build using a Creality 1.1.4 board and the display

//Creality E0
#define extEnable 14
#define extStep 1
#define extDir 0

//Creality Z-axis
#define selEnable 26
#define selStep 3
#define selDir 2

//Creality Y-stop
#define trigger 19

The display is more complicated.. using u8glib and the commands are quite different. Haven't made all of this switchable by #define

void oledclear(){ 
#ifdef Creality
  oled.firstPage(); 
  do { 
  } while( oled.nextPage() ); 
#else
  oled.clear();
#endif
}

void displayText(int offset, String str)
{
    oled.firstPage();
    do {
      oled.drawStr(0,22,str.c_str());
    } while (oled.nextPage());
}

Setup:

#ifdef Creality
  oled.setFont(u8g_font_6x10);
  oled.firstPage();
  do {
  	oled.drawStr(0,22,"3DChameleon Mk4"); //print a welcome message
  } while (oled.nextPage());
#else
  // enable OLED display
  oled.begin(&Adafruit128x64, OLED_I2C_ADDRESS);
//... rest of normal display setup
  displayText(0, "       Ready!");
#endif

libs:

//#define Creality  //enable for Melzi board

#ifdef Creality
  #include <U8glib.h>
#endif
#include <SSD1306Ascii.h> //i2C OLED
#include <SSD1306AsciiWire.h> //i2C OLED


#ifdef Creality
 U8GLIB_ST7920_128X64_1X oled(30, 17, 28); // Creality Melzi with single ribbon cable
#else
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
  #define OLED_RESET  -1 // Reset pin # (or -1 if sharing Arduino reset pin)
  #define OLED_I2C_ADDRESS 0x3C
  SSD1306AsciiWire oled;
#endif