EtiMa/Arduino/etima/etima.ino

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
// The pins for I2C are defined by the Wire-library. 
// On an arduino UNO:       A4(SDA), A5(SCL)
// On an arduino MEGA 2560: 20(SDA), 21(SCL)
// On an arduino LEONARDO:   2(SDA),  3(SCL), ...
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
#define LOGO_HEIGHT   64
#define LOGO_WIDTH    64
static const unsigned char PROGMEM logo_bmp[] =
{ B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B00000000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B00000000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B00000000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B00000000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B11110000, B00001111, B00001111, B00000000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B00001111, B00001111, B00000000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B00001111, B00001111, B00000000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B00001111, B00001111, B00000000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B11111111, B00001111, B11110000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B11111111, B00001111, B11110000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B11111111, B00001111, B11110000, B11110000, B00000000, 
B00000000, B00000000, B11110000, B11111111, B00001111, B11110000, B11110000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B11110000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B11110000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B11110000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00000000, B11110000, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00001111, B11111111, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00001111, B11111111, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00001111, B11111111, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00001111, B00001111, B11111111, B00001111, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B11111111, B00001111, B11110000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00001111, B00001111, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00001111, B00001111, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00001111, B00001111, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00001111, B00001111, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B11110000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 
B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, B00000000,
};
unsigned char MotorDelay = 1;
unsigned char MotorDelayOld = 0;
int UP = 0;
int DOWN = 0;
int ENTER = 0;
int UP_OLD = 0;
int DOWN_OLD = 0;
int ENTER_OLD = 0;

void setup() {
pinMode(SCK, INPUT);
pinMode(MOSI, INPUT);
pinMode(MISO, INPUT);

 Serial.begin(9600);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  testdrawbitmap();    // Draw a small bitmap image
  delay(2000); // Pause for 2 seconds
 // Clear the buffer
  display.clearDisplay();
 display.display();
   }

void loop() {
    UP = digitalRead(SCK);
    DOWN = digitalRead(MOSI);
    ENTER = digitalRead(MISO);
    display.setTextSize(2);             
    display.setTextColor(SSD1306_WHITE);        // Draw white text
    display.setCursor(0,0);             // Start at top-left corner
    if (MotorDelay != MotorDelayOld){
 display.clearDisplay();
      display.println(F("Delay: ")); display.println(MotorDelay); display.println(MotorDelayOld);
      display.display();
      MotorDelayOld = MotorDelay;
   }
   if(UP == 1 && UP !=  UP_OLD){
    MotorDelay++;
   } 
   if(DOWN == 1 && DOWN !=  DOWN_OLD){
    MotorDelay--;
   } 
   UP_OLD = UP;
   DOWN_OLD = DOWN;
   ENTER_OLD = ENTER;
}

void testdrawbitmap(void) {
  display.clearDisplay();

  display.drawBitmap(
    (display.width()  - LOGO_WIDTH ) / 2,
    (display.height() - LOGO_HEIGHT) / 2,
    logo_bmp, LOGO_WIDTH, LOGO_HEIGHT, 1);
  display.display();
}