void draw(u8g2_t *u8g2)
{
	u8g2_ClearBuffer(u8g2); 
   u8g2_SetFontMode(u8g2, 1);
   u8g2_SetFontDirection(u8g2, 0); 
   u8g2_SetFont(u8g2, u8g2_font_inb24_mf); 
   u8g2_DrawStr(u8g2, 0, 20, "U");

   u8g2_SetFontDirection(u8g2, 1);
   u8g2_SetFont(u8g2, u8g2_font_inb30_mn);
   u8g2_DrawStr(u8g2, 21,8,"8");

   u8g2_SetFontDirection(u8g2, 0);
   u8g2_SetFont(u8g2, u8g2_font_inb24_mf);
   u8g2_DrawStr(u8g2, 51,30,"g");
   u8g2_DrawStr(u8g2, 67,30,"\xb2");

   u8g2_DrawHLine(u8g2, 2, 35, 47);
   u8g2_DrawHLine(u8g2, 3, 36, 47);
   u8g2_DrawVLine(u8g2, 45, 32, 12);
   u8g2_DrawVLine(u8g2, 46, 33, 12);

   u8g2_SetFont(u8g2, u8g2_font_4x6_tr);
   u8g2_DrawStr(u8g2, 1,54,"github.com/olikraus/u8g2");

	 u8g2_SendBuffer(u8g2);
}


int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */
  // 检测I2C设备是否存在
  // if (I2C_ScanDevice(OLED_ADDRESS<<1) != HAL_OK)
  // {
  //   // OLED设备未检测到,进入错误处理
  //   Error_Handler();
  // }


  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  u8g2_t u8g2;
  u8g2Init(&u8g2);
  draw(&u8g2);
  while (1) {     
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
    
    //  led灯闪烁
    HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
    HAL_Delay(1000);
  }
  /* USER CODE END 3 */
}