Using the Pmod OLED with Arduino Uno

/************************************************************************
*
* Test of the Pmod 
*
*************************************************************************
* Description: Pmod_OLED
* A cloud of points is displayed randomly
* then the Message lextronic appears and flashes 3 times.
*
* Material
* 1. Arduino Uno
* 2. Pmod OLED
* (Download libraries https://github.com/adafruit/Adafruit_SSD1306 et
* https://github.com/adafruit/Adafruit-GFX-Library)
*
************************************************************************/

// Affectation of pins
#define OLED_MOSI 9
#define OLED_CLK 10
#define OLED_DC 11
#define OLED_CS 12
#define OLED_RESET 13

// Call of libraries
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <SPI.h>

Adafruit_SSD1306 afficheur(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
//creation of object

int x;
int y;

void setup(void)
{
 afficheur.begin(); // initialization of display object
 afficheur.display(); // refresh display
 afficheur.clearDisplay(); // erase display
 afficheur.display(); // refresh display
}

void loop()
{
 afficheur.clearDisplay(); // erase display
 afficheur.display(); // refresh display
 for (int i=0; i <= 50; i++) // display cloud of points
 {
  x=random(128); // x take random value from 0 to 128
  y=random(32); // y take random value from 0 et 32
  afficheur.drawPixel(x, y, WHITE); // Display pixel at (x,y)
  afficheur.display(); // refresh display
  delay(50); // wait 50 ms
 }
 afficheur.setTextSize(2); // configuration of size of caracters caractères
 afficheur.setTextColor(WHITE);
 afficheur.setCursor(10,10); // set cursor at x=10 and y=10
 afficheur.println("LEXTRONIC"); // display LEXTRONIC
 afficheur.display(); // refresh display
 delay(1000);
 for (int i=0; i <= 3; i++) // the message blink
 {
  afficheur.setCursor(10,10);
  afficheur.println("LEXTRONIC");
  afficheur.display();
  delay(1000);
  afficheur.clearDisplay();
  afficheur.display();
  delay(500);
 }
}