//Including the needed libraries
#include <OLED.h>
#include <DSPI.h>

//Some necessary definitions of how big our glyphs and font library are
#define OLEDCharSize      8                    //number of bytes in a glyph
#define OLEDUserFontSize  (2*OLEDCharSize)     //number of bytes in UserFont table
OledClass OLED;                                //a class declaration

uint8_t UserFont[OLEDUserFontSize] = {
        0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81,	//the 'X' character
	0xFF, 0xA5, 0xFF, 0xA5, 0xA5, 0xFF, 0xA5, 0xFF	//the checkerboard
};

void setup(){
  OLED.begin();
  OLED.defineUserChar(0, &UserFont[0*OLEDCharSize]);  //define the 1st character
  OLED.defineUserChar(1, &UserFont[1*OLEDCharSize]);  //define the 2nd character
}

void loop(){
  OLED.clearBuffer();       //clear the display buffer
  OLED.setCursor(0,0);      //placing the cursor in the upper left corner
  OLED.putString("The two defined");
  OLED.setCursor(0,1);      //placing the cursor one row down
  OLED.putString("characters are:");
  OLED.setCursor(4,3);      //moving the cursor again
  OLED.putChar(0);          //place the first character
  OLED.setCursor(6,3);
  OLED.putString("and");    //flavor text
  OLED.setCursor(10,3);
  OLED.putChar(1);          //place the 2nd character
  OLED.updateDisplay();     //update the display
  delay(5000);              //a delay so you can see the screen
}