关于Arduino&SSD1306OLED（IIC）显示的学习 |
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关于Arduino&SSD1306OLED（IIC）显示的学习
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1、 前期准备
arduino UNO开发板OLED 显示屏导线若干取模软件zimoV2.2 这里推荐一个在线图片取模软件 http://tools.clz.me/
2、引脚接线
背面图： 上传到arduino板上，打开串口可查看地址 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 #include #include #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 |
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
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。 
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：
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