Oled mit ESP8266 Wemos D1 mini

oled.c

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSans24pt7b.h>

// No IO Pin for Reset nedded, if oled Res 100nF to ground and 10k to 3.3V
#define OLED_RESET -1 
Adafruit_SSD1306 display(OLED_RESET);

#if (SSD1306_LCDHEIGHT != 64)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif

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

  // by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  // init done

  // Clear the buffer.
  display.clearDisplay();

  // text display tests
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.println("Hello, world!");
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setFont(&FreeSans24pt7b);
  display.setCursor(5,32);
  display.print(" 2:83");
  display.display();
}

void loop() {
}