关于Arduino&SSD1306OLED（IIC）显示的学习

曾经终败给现在 2022-04-15 03:16 733阅读 0赞

## 1、 前期准备 ##

1.  arduino UNO开发板
2.  OLED 显示屏
3.  导线若干
4.  取模软件zimoV2.2  
    这里推荐一个在线图片取模软件  
    [http://tools.clz.me/][http_tools.clz.me]

## 2、引脚接线 ##

![接线图][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70]  
OLED 显示屏有四个引脚，分别是：  
SDA(数据线) SCK(时钟线) VDD(3.3V) GND  
在UNO开发板上I2C接口，SDA对应D4，SCK对应D5  
在MEGA2560开发板上I2C接口,SDA对应D20, SCL对应D21

## 3、通信地址 ##

背面图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 1]  
模块背面的IIC ADRESSSELECT表示该模块在IIC通信作为从机时的地址，当中间的脚用电阻和左边接起来时，地址为0x78，当和右边接起来时，地址为0x7A。  
![在这里插入图片描述][2018112020413216.png]  
这款屏幕尺寸约为0.96英寸，由SSD1306驱动，驱动接口I2C，I2C地址(0x3c 默认/0x3d)。  
不同型号有不同的通信地址，可通过程序查询：

#include <Wire.h>  
       
    void setup(){  
      Wire.begin();  
      Serial.begin(9600);  
      Serial.println("\nI2C Scanner");  
    }  
    void loop(){  
      byte error, address;  
      int nDevices;  
      Serial.println("Scanning...");  
      nDevices = 0;  
      for (address = 1; address < 127; address++ ){  
        // The i2c_scanner uses the return value of  
        // the Write.endTransmisstion to see if  
        // a device did acknowledge to the address.  
        Wire.beginTransmission(address);  
        error = Wire.endTransmission();  
        if (error == 0){  
          Serial.print("I2C device found at address 0x");  
          if (address < 16)  
            Serial.print("0");  
          Serial.print(address, HEX);  
          Serial.println(" !");  
          nDevices++;  
        }else if (error == 4){  
          Serial.print("Unknow error at address 0x");  
          if (address < 16)  
            Serial.print("0");  
          Serial.println(address, HEX);  
        }  
      }  
      if (nDevices == 0)  
        Serial.println("No I2C devices found\n");  
      else  
        Serial.println("done\n");  
      delay(5000); // wait 5 seconds for next scan  
    }

上传到arduino板上，打开串口可查看地址  
![串口][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 2]

## 4、编程与程序解读 ##

注：编程之前需要添加Adafruit\_SSD1306和Adafruit\_GFX这两个库文件

官方例程：

/*********************************************************************
    This is an example for our Monochrome OLEDs based on SSD1306 drivers
    
      Pick one up today in the adafruit shop!
      ------> http://www.adafruit.com/category/63_98
    
    This example is for a 128x64 size display using I2C to communicate
    3 pins are required to interface (2 I2C and one reset)
    
    Adafruit invests time and resources providing this open source code, 
    please support Adafruit and open-source hardware by purchasing 
    products from Adafruit!
    
    Written by Limor Fried/Ladyada  for Adafruit Industries.  
    BSD license, check license.txt for more information
    All text above, and the splash screen must be included in any redistribution
    *********************************************************************/
    
    #include <Wire.h>
    #include <Adafruit_GFX.h>
    #include <Adafruit_SSD1306.h>
    
    #define OLED_RESET 4
    Adafruit_SSD1306 display(OLED_RESET);
    
    #define NUMFLAKES 10
    #define XPOS 0
    #define YPOS 1
    #define DELTAY 2
    
    
    #define LOGO16_GLCD_HEIGHT 16 
    #define LOGO16_GLCD_WIDTH  16 
    static const unsigned char PROGMEM logo16_glcd_bmp[] =
    { B00000000, B11000000,
      B00000001, B11000000,
      B00000001, B11000000,
      B00000011, B11100000,
      B11110011, B11100000,
      B11111110, B11111000,
      B01111110, B11111111,
      B00110011, B10011111,
      B00011111, B11111100,
      B00001101, B01110000,
      B00011011, B10100000,
      B00111111, B11100000,
      B00111111, B11110000,
      B01111100, B11110000,
      B01110000, B01110000,
      B00000000, B00110000 };
    
    #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, 0x3D);  // initialize with the I2C addr 0x3D (for the 128x64)
      // init done
      
      display.display(); // show splashscreen
      delay(2000);
      display.clearDisplay();   // clears the screen and buffer
    
      // draw a single pixel
      display.drawPixel(10, 10, WHITE);
      display.display();
      delay(2000);
      display.clearDisplay();
    
      // draw many lines
      testdrawline();
      display.display();
      delay(2000);
      display.clearDisplay();
    
      // draw rectangles
      testdrawrect();
      display.display();
      delay(2000);
      display.clearDisplay();
    
      // draw multiple rectangles
      testfillrect();
      display.display();
      delay(2000);
      display.clearDisplay();
    
      // draw mulitple circles
      testdrawcircle();
      display.display();
      delay(2000);
      display.clearDisplay();
    
      // draw a white circle, 10 pixel radius
      display.fillCircle(display.width()/2, display.height()/2, 10, WHITE);
      display.display();
      delay(2000);
      display.clearDisplay();
    
      testdrawroundrect();
      delay(2000);
      display.clearDisplay();
    
      testfillroundrect();
      delay(2000);
      display.clearDisplay();
    
      testdrawtriangle();
      delay(2000);
      display.clearDisplay();
       
      testfilltriangle();
      delay(2000);
      display.clearDisplay();
    
      // draw the first ~12 characters in the font
      testdrawchar();
      display.display();
      delay(2000);
      display.clearDisplay();
    
      // draw scrolling text
      testscrolltext();
      delay(2000);
      display.clearDisplay();
    
      // text display tests
      display.setTextSize(1);
      display.setTextColor(WHITE);
      display.setCursor(0,0);
      display.println("Hello, world!");
      display.setTextColor(BLACK, WHITE); // 'inverted' text
      display.println(3.141592);
      display.setTextSize(2);
      display.setTextColor(WHITE);
      display.print("0x"); display.println(0xDEADBEEF, HEX);
      display.display();
      delay(2000);
    
      // miniature bitmap display
      display.clearDisplay();
      display.drawBitmap(30, 16,  logo16_glcd_bmp, 16, 16, 1);
      display.display();
    
      // invert the display
      display.invertDisplay(true);
      delay(1000); 
      display.invertDisplay(false);
      delay(1000); 
    
      // draw a bitmap icon and 'animate' movement
      testdrawbitmap(logo16_glcd_bmp, LOGO16_GLCD_HEIGHT, LOGO16_GLCD_WIDTH);
    }
    
    
    void loop() {
      
    }
    
    
    void testdrawbitmap(const uint8_t *bitmap, uint8_t w, uint8_t h) {
      uint8_t icons[NUMFLAKES][3];
      srandom(666);     // whatever seed
     
      // initialize
      for (uint8_t f=0; f< NUMFLAKES; f++) {
        icons[f][XPOS] = random() % display.width();
        icons[f][YPOS] = 0;
        icons[f][DELTAY] = random() % 5 + 1;
        
        Serial.print("x: ");
        Serial.print(icons[f][XPOS], DEC);
        Serial.print(" y: ");
        Serial.print(icons[f][YPOS], DEC);
        Serial.print(" dy: ");
        Serial.println(icons[f][DELTAY], DEC);
      }
    
      while (1) {
        // draw each icon
        for (uint8_t f=0; f< NUMFLAKES; f++) {
          display.drawBitmap(icons[f][XPOS], icons[f][YPOS], logo16_glcd_bmp, w, h, WHITE);
        }
        display.display();
        delay(200);
        
        // then erase it + move it
        for (uint8_t f=0; f< NUMFLAKES; f++) {
          display.drawBitmap(icons[f][XPOS], icons[f][YPOS],  logo16_glcd_bmp, w, h, BLACK);
          // move it
          icons[f][YPOS] += icons[f][DELTAY];
          // if its gone, reinit
          if (icons[f][YPOS] > display.height()) {
    	icons[f][XPOS] = random() % display.width();
    	icons[f][YPOS] = 0;
    	icons[f][DELTAY] = random() % 5 + 1;
          }
        }
       }
    }
    
    
    void testdrawchar(void) {
      display.setTextSize(1);
      display.setTextColor(WHITE);
      display.setCursor(0,0);
    
      for (uint8_t i=0; i < 168; i++) {
        if (i == '\n') continue;
        display.write(i);
        if ((i > 0) && (i % 21 == 0))
          display.println();
      }    
      display.display();
    }
    
    void testdrawcircle(void) {
      for (int16_t i=0; i<display.height(); i+=2) {
        display.drawCircle(display.width()/2, display.height()/2, i, WHITE);
        display.display();
      }
    }
    
    void testfillrect(void) {
      uint8_t color = 1;
      for (int16_t i=0; i<display.height()/2; i+=3) {
        // alternate colors
        display.fillRect(i, i, display.width()-i*2, display.height()-i*2, color%2);
        display.display();
        color++;
      }
    }
    
    void testdrawtriangle(void) {
      for (int16_t i=0; i<min(display.width(),display.height())/2; i+=5) {
        display.drawTriangle(display.width()/2, display.height()/2-i,
                         display.width()/2-i, display.height()/2+i,
                         display.width()/2+i, display.height()/2+i, WHITE);
        display.display();
      }
    }
    
    void testfilltriangle(void) {
      uint8_t color = WHITE;
      for (int16_t i=min(display.width(),display.height())/2; i>0; i-=5) {
        display.fillTriangle(display.width()/2, display.height()/2-i,
                         display.width()/2-i, display.height()/2+i,
                         display.width()/2+i, display.height()/2+i, WHITE);
        if (color == WHITE) color = BLACK;
        else color = WHITE;
        display.display();
      }
    }
    
    void testdrawroundrect(void) {
      for (int16_t i=0; i<display.height()/2-2; i+=2) {
        display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, WHITE);
        display.display();
      }
    }
    
    void testfillroundrect(void) {
      uint8_t color = WHITE;
      for (int16_t i=0; i<display.height()/2-2; i+=2) {
        display.fillRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, color);
        if (color == WHITE) color = BLACK;
        else color = WHITE;
        display.display();
      }
    }
       
    void testdrawrect(void) {
      for (int16_t i=0; i<display.height()/2; i+=2) {
        display.drawRect(i, i, display.width()-2*i, display.height()-2*i, WHITE);
        display.display();
      }
    }
    
    void testdrawline() {  
      for (int16_t i=0; i<display.width(); i+=4) {
        display.drawLine(0, 0, i, display.height()-1, WHITE);
        display.display();
      }
      for (int16_t i=0; i<display.height(); i+=4) {
        display.drawLine(0, 0, display.width()-1, i, WHITE);
        display.display();
      }
      delay(250);
      
      display.clearDisplay();
      for (int16_t i=0; i<display.width(); i+=4) {
        display.drawLine(0, display.height()-1, i, 0, WHITE);
        display.display();
      }
      for (int16_t i=display.height()-1; i>=0; i-=4) {
        display.drawLine(0, display.height()-1, display.width()-1, i, WHITE);
        display.display();
      }
      delay(250);
      
      display.clearDisplay();
      for (int16_t i=display.width()-1; i>=0; i-=4) {
        display.drawLine(display.width()-1, display.height()-1, i, 0, WHITE);
        display.display();
      }
      for (int16_t i=display.height()-1; i>=0; i-=4) {
        display.drawLine(display.width()-1, display.height()-1, 0, i, WHITE);
        display.display();
      }
      delay(250);
    
      display.clearDisplay();
      for (int16_t i=0; i<display.height(); i+=4) {
        display.drawLine(display.width()-1, 0, 0, i, WHITE);
        display.display();
      }
      for (int16_t i=0; i<display.width(); i+=4) {
        display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE); 
        display.display();
      }
      delay(250);
    }
    
    void testscrolltext(void) {
      display.setTextSize(2);
      display.setTextColor(WHITE);
      display.setCursor(10,0);
      display.clearDisplay();
      display.println("scroll");
      display.display();
     
      display.startscrollright(0x00, 0x0F);
      delay(2000);
      display.stopscroll();
      delay(1000);
      display.startscrollleft(0x00, 0x0F);
      delay(2000);
      display.stopscroll();
      delay(1000);    
      display.startscrolldiagright(0x00, 0x07);
      delay(2000);
      display.startscrolldiagleft(0x00, 0x07);
      delay(2000);
      display.stopscroll();
    }

## 程序与函数讲解 ##

以下面简单显示程序为例

关于显示，首先要建立坐标概念  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 3]  
这种型号的OLED 显示屏就是一个128(width)X64(height)点阵。在坐标系中，左上角是原点，X轴水平向右数值增加，Y轴竖直向下数值增大。

1.begin()  
      初始化I2C地址，在Arduino setup调用。
      
    2.clearDisplay()  
      把Buffer缓存区清零，清除屏幕显示的东西，消影
      
      3.display()  
      把Buffer缓存区的数据显示到屏幕上，任意一个需要显示的操作都需要调用这个方法
    
    4.drawPixel(int16_t x, int16_t y, uint16_t color)    
      画点 点坐标 (x,y)		(x,y,color)
    
    5.drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) 
      画线 从(x0,y0)到(x1,y1)  （x0,y0,x1,y1,color）
    
    6.drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)  
      画空心矩形  左上角坐标(x0,y0)  宽度w 高度h		(x0,y0,w,h,color)
    
    7.fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)  
      画实心矩形  左上角坐标(x0,y0)  宽度w 高度h		(x0,y0,w,h,color)
    
    8.drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)  
      画空心圆,圆心(x0,y0),半径 r		(x0,y0,r,color)
    
    9.fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) 
      画实心圆,圆心(x0,y0),半径 r		(x0,y0,r,color)
    
    10.drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)       
      画空心三角形,上顶点坐标(x0,y0),左顶点坐标(x1,y1),右顶点坐标(x2,y2)
      (x0,y0,x1,y1,x2,y2,color)
    
    11.fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1,  int16_t x2, int16_t y2, uint16_t color)  
      画实心三角形,上顶点坐标(x0,y0),左顶点坐标(x1,y1),右顶点坐标(x2,y2)
      （x0,y0,x1,y1,x2,y2,color）
    
    12.drawRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h,int16_t radius, uint16_t color)        
      画空心圆角矩形,左上角坐标(x0,y0)  宽度w 高度h,圆角半径 radius
      (x0,y0,w,h,radius,color)
    
    13.fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h,int16_t radius, uint16_t color)     
      画实心圆角矩形,左上角坐标(x0,y0)  宽度w 高度h,圆角半径 radius
    
    /*14.drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap,int16_t w, int16_t h, uint16_t color) 
      
      画任意图形，左上角坐标(x,y)，图形数据 bitmap，图形高度h 宽度w
      图形以点阵的显示形式生成代码，bitmap可以是真正图片的数据，也可以是单个文字的字模。
    
    
    15.ShowCN_16(int16_t x, int16_t y, const uint8_t *bitmap,uint8_t size,uint16_t color)  
      显示一行文字(16X16字模)，左上角坐标(x,y),字模bitmap，字数size	*/

## 至于图片的静态和动态显示问题，在稍后学习之后再做更新 ##

## 文字的显示 ##

1.  单文字显示

文字的显示需要运用取模软件取模，这里用的是zimoV2.2  
![在这里插入图片描述][20181122144055504.png]  
打开软件  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 4]  
以文字“一”为例  
新建一个16\*16的像素块![在这里插入图片描述][20181122144617816.png]  
在文字区输入 汉字“一”， Ctrl+回车生成文字，  
在取模方式项选择C51格式生成代码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 5]  
复制代码代码添加到下面程序中

其中display.drawBitmap(16,16,Strong\_16x16,16,16,WHITE);  
括号里面存放的依次是 起点坐标（16，16），Strong\_16x16，显示区域大小（16 \* 16），颜色  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 6]  
起点为（0,0）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 7]  
起点为（16,16）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 8]  
显示区域为（32,16）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 9]  
显示区域为（128,64），实际为一堆乱码  
关于其他文字显示出错的问题，原因是取模软件取模不正确需要在参数设置里面修改![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 10]  
观察显示的文字大小是否为16\*16，如果不是，选择‘文字输入区字体选择’更改字体  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 11]  
如果还有问题点击 其它选项更改取模方式  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 12]  
这样基本上就能解决显示出错的问题。

1.  多字显示  
    多字显示跟单字显示类似，用取模软件分别提取出文字的代码

显示效果  
![显示效果][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 13]

## 图片的显示 ##

图片的显示与文字显示基本相同，具体步骤如下：

1.  选择显示的图片
2.  将图片的大小和格式更改为128\*64，单色  
    ![在这里插入图片描述][20181122163247831.jpg]
3.  打开取模软件，选择![在这里插入图片描述][20181122163402491.png]  
    打开图片，然后生成代码  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 14]  
    复制代码移植到程序中

#include <Wire.h>
    #include <Adafruit_GFX.h>
    #include <Adafruit_SSD1306.h>
     
    #define OLED_RESET 4
    Adafruit_SSD1306 display(OLED_RESET);
     
    #define NUMFLAKES 10
    #define XPOS 0
    #define YPOS 1
    #define DELTAY 2
     
    #define LOGO16_GLCD_HEIGHT 16 
    #define LOGO16_GLCD_WIDTH  16 
     
    #if (SSD1306_LCDHEIGHT != 64)
    #error("Height incorrect, please fix Adafruit_SSD1306.h!");
    #endif
    //显示图片
    static const uint8_t PROGMEM photo_128x64[] = {
    
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0x1F,0xE0,0x00,0x00,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x1F,0xF0,0x00,0x00,0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x3F,0xE0,0x00,0x00,0x3F,0xE0,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x3F,0xE0,0x00,0x00,0x1F,0xE0,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x7F,0xC0,0x05,0x80,0x1F,0xF0,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x7F,0x80,0x0D,0x80,0x0F,0xF0,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x1D,0xC0,0x03,0xF8,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0x3D,0xF0,0x03,0xF8,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0x7D,0xF0,0x03,0xF8,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0xFD,0xF8,0x03,0xF8,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0xFE,0x07,0xFD,0xFF,0x03,0xF8,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0xFE,0x0F,0xFD,0xFF,0xC3,0xF8,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0xFF,0x1F,0xF8,0xFF,0xC7,0xF8,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x7F,0x3F,0xF0,0x7F,0xF7,0xF8,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x7F,0xFF,0xE0,0x3F,0xFF,0xF0,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0x3F,0xFF,0x80,0x0F,0xFF,0xE0,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0x1F,0xFC,0x00,0x01,0xFF,0xC0,0x00,0x00,0x00,0x00,0x00,
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    0x00,0x00,0x00,0x00,0x00,0x07,0xFF,0x00,0x07,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xF0,0x3F,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xFF,0xFF,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0xFF,0xFF,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xFF,0xFF,0x80,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x01,0xFD,0xC3,0xFF,0x7F,0x71,0x9C,0xCF,0xFB,0xF3,0x8E,0x00,0x00,0x00,
    0x00,0x00,0x03,0xFF,0xE3,0xFF,0x7F,0xFB,0x9D,0xEF,0xFF,0xFB,0x8E,0x00,0x00,0x00,
    0x00,0x00,0x03,0xFF,0xE7,0xFF,0x7F,0xFB,0xFB,0xFF,0xFF,0xFB,0x8E,0x00,0x00,0x00,
    0x00,0x00,0x03,0x87,0xFF,0x7E,0x7F,0xFF,0xFB,0xF1,0xC7,0x1B,0xFE,0x00,0x00,0x00,
    0x00,0x00,0x03,0x87,0x7E,0x7E,0x7F,0x9F,0xF7,0xF9,0xCF,0x1B,0xFE,0x00,0x00,0x00,
    0x00,0x00,0x03,0xFF,0x7E,0x7F,0x7F,0x9E,0xF7,0x3D,0xC7,0xFB,0x8E,0x00,0x00,0x00,
    0x00,0x00,0x03,0xFF,0x3C,0x7F,0xF7,0xDE,0xFE,0x1F,0xC7,0xFB,0x8E,0x00,0x00,0x00,
    0x00,0x00,0x00,0xFE,0x18,0x7F,0x71,0xEC,0x6E,0x1F,0xC3,0xF3,0x8E,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    void setup()   {                
      Serial.begin(9600);
      delay(500);
      // 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 0x3D (for the 128x64) 
    }
     
    void loop() {
      test_SSD1306();
    }
     
    void test_SSD1306(void){
      display.clearDisplay();   // clears the screen and buffer
      display.drawBitmap(0,0,photo_128x64,128,62,WHITE);
      display.display();
      delay(2000);
    
    };

效果图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 15]

## OLED 显示串口信息 ##

OLED 实时读取串口信息，可应用于诸多适用场合，方便人们在第一时间识别和处理一些信息  
（需要串口助手）

程序参考于https://blog.csdn.net/weixin\_40825989/article/details/81148177  
效果图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 16]  
![显示效果][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 17]

[http_tools.clz.me]: http://tools.clz.me/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70]: /images/20220415/6ded2c1e31be4945921a50a541635165.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 1]: /images/20220415/b834c0453b67492b818800b46faa6440.png
[2018112020413216.png]: /images/20220415/63bb103588a9442b9413af493781ae21.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 2]: /images/20220415/752ebe68a33443ac9e86fc9617a794e0.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 3]: /images/20220415/ad2c05523e714e45b25a0d649a7625e3.png
[20181122144055504.png]: /images/20220415/107766e1559249c0a10c668a3fb79ffc.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 4]: /images/20220415/5478084b86b6432e8b24e6a877df4b1f.png
[20181122144617816.png]: /images/20220415/20e30f48c8ee4a669e2a074aa9fae38d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 5]: /images/20220415/49879280e3814d5a90ad38750d53d3e4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 6]: /images/20220415/4dcac2be7078492f8bb07ad6ae44f2e4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 7]: /images/20220415/067220727dac4372bf5dfa8581de5a9b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 8]: /images/20220415/e71e44013c2447c48f6089b0e52e5f29.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 9]: /images/20220415/d764513c3b8148039c0ceed1cca40215.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 10]: /images/20220415/fadf4c9e31384119907436c39b9dcd90.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 11]: /images/20220415/8ab2ab25b0014c379466d49f17200ac6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 12]: /images/20220415/b75726c462684b958f63e7f1501994fd.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 13]: /images/20220415/3b96314046d147fda9d1f4ac54af7188.png
[20181122163247831.jpg]: /images/20220415/97e00e0c2c0749e7be9aeafd96cc0ad4.png
[20181122163402491.png]: /images/20220415/2cb2eed9dbae4c69abf62b33ec3c6dba.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 14]: /images/20220415/0b9f28a9a004458985900f2d75f79297.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 15]: /images/20220415/5030acb20ba846e69a4e11dd420b8c87.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODYwNzI4_size_16_color_FFFFFF_t_70 16]: /images/20220415/d42e6a20dfec480295544e91fe32256d.png
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