//Panos Papazoglou, MICRODEV.GR
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 
#define SCREEN_HEIGHT 64 
#define OLED_DC     8
#define OLED_CS     10
#define OLED_RESET  9
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT,
  &SPI, OLED_DC, OLED_RESET, OLED_CS);
#define LOGO_HEIGHT   16
#define LOGO_WIDTH    16
static const unsigned char PROGMEM gr_flag[] =
{ B01100011, B00011000,
B01100011, B00011000,
B01100011, B00011000,
B01100011, B11111111,
B01100011, B00011000,
B01100011, B00011000,
B01100011, B00011000,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110,
B01100011, B01100110
 };
 

void setup() {
  Serial.begin(9600);

    if(!oled.begin(SSD1306_SWITCHCAPVCC)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
    }

}
void loop() {
    oled.clearDisplay();
    for(int i=1;i<16;i++)
    {
      randomSeed(analogRead(0));
      int x=random(0,100); int y=random(0,45);
      bitmap(x,y);
      delay(500);
    }
    delay(5000);
}


void bitmap(int x, int y) 
{
  oled.drawBitmap(x,y,gr_flag, LOGO_WIDTH, LOGO_HEIGHT, 1);
  oled.display();
}