01110 ESP32-S3 + 1.3寸 IIC OLED 显示屏资料

#include <Wire.h>

#define SDA_PIN 8
#define SCL_PIN 9

void setup() {
  Serial.begin(115200);
  delay(1000);
  Wire.begin(SDA_PIN, SCL_PIN);
  Wire.setClock(100000);

  Serial.println("ESP32-S3 I2C scanner");
  byte count = 0;
  for (byte address = 1; address < 127; address++) {
    Wire.beginTransmission(address);
    byte error = Wire.endTransmission();
    if (error == 0) {
      Serial.print("I2C device found at 0x");
      if (address < 16) Serial.print("0");
      Serial.println(address, HEX);
      count++;
    }
  }
  if (count == 0) Serial.println("No I2C devices found");
}

void loop() {}

// Arduino IDE 库管理器安装：U8g2
// 1.3 寸 IIC OLED 常见 SH1106，优先测试这个

#include <Arduino.h>
#include <U8g2lib.h>
#include <Wire.h>

#define SDA_PIN 8
#define SCL_PIN 9

U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(
  U8G2_R0,
  U8X8_PIN_NONE
);

void setup() {
  Wire.begin(SDA_PIN, SCL_PIN);
  u8g2.begin();
  u8g2.setContrast(180);
}

void loop() {
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_6x12_tf);
  u8g2.drawStr(0, 14, "ESP32-S3 OLED");
  u8g2.drawStr(0, 32, "I2C: SDA=8 SCL=9");
  u8g2.drawStr(0, 50, "Driver: SH1106");
  u8g2.sendBuffer();
  delay(1000);
}

// Arduino IDE 库管理器安装：Adafruit SSD1306 和 Adafruit GFX
// 如果 SH1106 示例不正常，再测试 SSD1306

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

#define SDA_PIN 8
#define SCL_PIN 9
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
  Serial.begin(115200);
  Wire.begin(SDA_PIN, SCL_PIN);

  // OLED 常见地址可能是 0x3C 或 0x3D；请先用 I2C Scanner 确认
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("SSD1306 init failed. Try SH1106 or check address.");
    while (true) delay(100);
  }

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.println("ESP32-S3 OLED");
  display.println("SDA=8 SCL=9");
  display.println("Driver: SSD1306");
  display.display();
}

void loop() {}