OLED一款小巧的显示屏,感觉可以做出很可爱的东西。
这次实验的这款是128X64的OLED屏幕 ,
芯片是SSD1306,请确认自家模块芯片型号,不然对不上号啊
使用IIC的方法,简单实验显示示例程序。
(请确认你手头上的模块可以IIC连接,若干不支持那只能SPI方式接线)
先实现连接与显示,之后再进行更深入的应用。
任意门:
编译的过程,可能会遇到以下问题:
①提示错误
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
错误信息意思是指:
高度不正确,请修正Adafruit_SSD1306.h!
进入Arduino安装文件夹的libraries文件夹的Adfruit_SSD1306-master 找到Adafruit_SSD1306.h
打开此文件,找到第70行左右
默认是定义 SSD1306_128_32 ,由于我们使用的是128*64的OLED,所以,把原来的#define SSD1306_128_32,前面加上//
把#define SSD_128_64 前面的//去掉
最后就如上面图例一样
②模块的IIC 地址问题
模块的地址修改在这个位置,示例程序的61行
这个模块地址我用的是这个,但每个模块可能不一样,具体请咨询购买的商家,又或者可以参考下面链接的,IIC搜索地址程序。
实验效果
BOM表
Arduino Uno *1
OLED 128*64 *1
跳线若干
针脚说明
VCC 接3.3v电源
GND 接地(GND)
SCL 时钟线
SDA 数据线
接线图
程序开源代码
在上代码之前,先下载两个库分别是
Adafruit SSD1306 Library:
https://github.com/adafruit/Adafruit_SSD1306
or
http://download.csdn.net/detail/ling3ye/9729179
Adafruit GFX Library:
https://github.com/adafruit/Adafruit-GFX-Library
or
http://download.csdn.net/detail/ling3ye/9729180
下载后把解压的文件放在 Arduino 安装目录里的 "libraries"
例如:C:Program Files (x86)Arduinolibraries
调出示例程序
或者复制以下代码,都是一样的:
- /*********************************************************************
- 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 <SPI.h>
- #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
- // Show image buffer on the display hardware.
- // Since the buffer is intialized with an Adafruit splashscreen
- // internally, this will display the splashscreen.
- display.display();
- delay(2000);
- // Clear the buffer.
- display.clearDisplay();
- // draw a single pixel
- display.drawPixel(10, 10, WHITE);
- // Show the display buffer on the hardware.
- // NOTE: You _must_ call display after making any drawing commands
- // to make them visible on the display hardware!
- 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);
- display.clearDisplay();
- // miniature bitmap display
- display.drawBitmap(30, 16, logo16_glcd_bmp, 16, 16, 1);
- display.display();
- delay(1);
- // invert the display
- display.invertDisplay(true);
- delay(1000);
- display.invertDisplay(false);
- delay(1000);
- display.clearDisplay();
- // 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];
- // 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], bitmap, 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], bitmap, 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 == ' ') continue;
- display.write(i);
- if ((i > 0) && (i % 21 == 0))
- display.println();
- }
- display.display();
- delay(1);
- }
- 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();
- delay(1);
- }
- }
- 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();
- delay(1);
- 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();
- delay(1);
- }
- }
- 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();
- delay(1);
- }
- }
- 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();
- delay(1);
- }
- }
- 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();
- delay(1);
- }
- }
- 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();
- delay(1);
- }
- }
- void testdrawline() {
- for (int16_t i=0; i<display.width(); i+=4) {
- display.drawLine(0, 0, i, display.height()-1, WHITE);
- display.display();
- delay(1);
- }
- for (int16_t i=0; i<display.height(); i+=4) {
- display.drawLine(0, 0, display.width()-1, i, WHITE);
- display.display();
- delay(1);
- }
- 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();
- delay(1);
- }
- 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(1);
- }
- 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();
- delay(1);
- }
- 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(1);
- }
- 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();
- delay(1);
- }
- for (int16_t i=0; i<display.width(); i+=4) {
- display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE);
- display.display();
- delay(1);
- }
- delay(250);
- }
- void testscrolltext(void) {
- display.setTextSize(2);
- display.setTextColor(WHITE);
- display.setCursor(10,0);
- display.clearDisplay();
- display.println("scroll");
- display.display();
- delay(1);
- 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();
- }