Datasheet

#define BUTTON_B 3

#define BUTTON_C 8

#define LED 13

#elif defined(ARDUINO_FEATHER52)

#define BUTTON_A 31

#define BUTTON_B 30

#define BUTTON_C 27

#define LED 17

#else // 32u4, M0, and 328p

#define BUTTON_A 9

#define BUTTON_B 6

#define BUTTON_C 5

#define LED 13

#endif

#if (SSD1306_LCDHEIGHT != 32)

#error("Height incorrect, please fix Adafruit_SSD1306.h!");

#endif

void setup() {

Serial.begin(9600);

Serial.println("OLED FeatherWing test");

// by default, we'll generate the high voltage from the 3.3v line internally! (neat!)

display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3C (for the 128x32)

// init done

Serial.println("OLED begun");

// Show image buffer on the display hardware.

// Since the buffer is intialized with an Adafruit splashscreen

// internally, this will display the splashscreen.

display.display();

delay(1000);

// Clear the buffer.

display.clearDisplay();

display.display();

Serial.println("IO test");

pinMode(BUTTON_A, INPUT_PULLUP);

pinMode(BUTTON_B, INPUT_PULLUP);

pinMode(BUTTON_C, INPUT_PULLUP);

// text display tests

display.setTextSize(1);

display.setTextColor(WHITE);

display.setCursor(0,0);

display.print("Connecting to SSID\n'adafruit':");

display.print("connected!");

display.println("IP: 10.0.1.23");