simple-1306text-2.ino

simple-1306text-2.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

#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);

void setup() {
  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
  }
  display.setRotation(2); //sets rotation 1 through 4 (2 = 180º rotation vs 4)
  display.clearDisplay();
  // Draw text
  display.setTextSize(1);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(30,0);             // Start at top-left corner
  display.print("Hello, world!");
  display.setCursor(30,30);  
  display.print("test");

  // Show the display buffer on the screen. You MUST call display() after
  // drawing commands to make them visible on screen!
  display.display();
  delay(1000);
  display.setTextSize(3); 
}

void loop() {
  unsigned long currentMillis = millis();
  display.clearDisplay();
  display.invertDisplay(1);
  display.setCursor(0,20);
  display.print(currentMillis);
  display.display();
  delay(10);
}