/* Arduino UNO with SSD1306 128x64 I2C OLED display
 * Demonstrates graphics and text elements
 * Tony Goodhew  26 May 2020  */
#include <SPI.h>           // Not needed with I2C
#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
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin  
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void show() { // Often used sequence - Function to simplify code
  display.display(); delay(2000); display.fillScreen(SSD1306_BLACK);
}
void setup() {
  // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
  Serial.begin(9600);
  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Old Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  
  // Initialise variables
  int cw = SSD1306_WHITE;
  int cb = SSD1306_BLACK;

  // Title screen
  display.clearDisplay();
  display.setTextSize(2);                
  display.setTextColor(SSD1306_WHITE);   // Draw white text
  display.setCursor(20,10);
  display.setTextSize(2);                // Medium
  display.println("Michelle");
  display.setCursor(20,25);
  display.println("Kim");
  show();

  
}
void loop() {
  // put your main code here, to run repeatedly:

}