本帖最后由 tom 于 2013-8-3 08:33 编辑
张老师Microduino-OLED12864显示器显示图片的问题
本显示器驱动芯片是SSD1306
显示器如何连接,和显示字符串看另一个贴子http://www.geek-workshop.com/thread-5483-1-1.html
买了这款显示器后,折腾了好几天。使用u8glib V1.12显示图片,经过多次测试,使用该库的范例显示自己提取的图片字模,不管是郝弘毅在12864教程中提供的字模提取软件,还是在网上下载的字模提取V2.1,在显示图片的时候都会出现严重的变形,不能正常显示图片。
后来我用U8glib V1.13版,依然不能正常显示图片,具体原因不明。
为了能显示图片,折腾了好几天,浪费了很多时间。
使用zcbzjx提供的范例,则可以正常显示图片。
特记录下来,希望后来者,不必浪费时间。
用photoshop 生成一个128*64像素大小的图片
S01.jpg
S02.jpg
S03.jpg
从百度搜索,下载字模提取软件V2.2
打开软件,显示如下画面S04.jpg
打开图片
如图S05.jpg
选择取模方式,点击C51方式
S06.jpg
选择生成代码,如图下列代码
- *-- 调入了一幅图像: --*/
- /*-- 宽度x高度=128x64 --*/
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复制代码
Arduino 代码如下: - /*********************************************************************
- *
- * // # Update the Adafruit SSD1306 library to make it work
- * // # Description:
- * // # show a simple animation
- *
- * // # Connection:
- * // # SCL -> A5(Uno)/D3(Leonardo)
- * // # SDA -> A4(Uno)/D2(Leonardo)
- * // # RST -> D4
- * // # DC -> GND
- * // # 3.3 -> 3.3v
- * // # g -> GND
- * // #
- *
- * This is an example for OLED based on SSD1306 drivers
- *
- *
- * This example is for a 128x64 size display using I2C to communicate
- *
- * Adafruit invests time and resources providing this open source code,
- * please support Adafruit and open-source hardware by purchasing
- * products from Adafruit!
- *
- * 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
- SSD1306 display(OLED_RESET);
- #define NUMFLAKES 10
- #define XPOS 0
- #define YPOS 1
- #define DELTAY 2
- #define LOGO16_GLCD_HEIGHT 64 //图片高度
- #define LOGO16_GLCD_WIDTH 128 //图片宽度
- static unsigned char PROGMEM logo16_glcd_bmp[] =
- {
- /*-- 宽度x高度=128x64 --*/
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- 0x07,0xB3,0x83,0xF9,0xC0,0x7C,0x00,0x03,0x3E,0x03,0x98,0x43,0x8C,0x60,0x00,0x00,
- 0x0F,0xF7,0xC7,0xB1,0x80,0x20,0x00,0x07,0x3C,0x07,0x98,0xC0,0x1F,0xF0,0x00,0x00,
- 0x0D,0xE7,0xF6,0x31,0x80,0x00,0x00,0x06,0x3C,0x07,0x1D,0xE0,0x1F,0xF0,0x00,0x00,
- 0x19,0xEE,0xF8,0x37,0x80,0x00,0x00,0x0C,0x1C,0x07,0x0F,0xE0,0x18,0x30,0x00,0x00,
- 0x01,0xD8,0xF8,0x3F,0x80,0x00,0x00,0x00,0x18,0x02,0x0F,0xC0,0x00,0x30,0x00,0x00,
- 0x01,0xB0,0x00,0x3F,0x00,0x00,0x00,0x00,0x10,0x00,0x07,0x80,0x00,0x00,0x00,0x00,
- 0x01,0x80,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x01,0x00,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 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,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 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,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 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,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 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,
- };
- #if (SSD1306_LCDHEIGHT != 64)
- #error("Height incorrect, please fix Adafruit_SSD1306.h!");
- #endif
- void setup() {
- Serial.begin(9600);
- display.begin(SSD1306_SWITCHCAPVCC, 0x3c); // initialize with the I2C addr 0x3C (for the 128x64)
- // init done
- //初始化12864屏幕
- display.display(); // show splashscreen
- //显示闪屏,我理解是12864中固化的图片
- delay(2000);
- display.clearDisplay(); // clears the screen and buffer
- //清屏
- display.clearDisplay();
- display.drawBitmap(0, 0, logo16_glcd_bmp, LOGO16_GLCD_WIDTH, LOGO16_GLCD_HEIGHT, 1);
- //在指定的位置绘出图形
- display.display();
- //在12864液晶屏中显示出来
- }
- void loop() {
- }
复制代码
程序运行后,先显示Micoduino文字,清屏,再显示想显示的图片
显示效果,摄像头不好,拍的有点模糊。S08.bmp
后记,如果是其它的非128*64大小的图片。
假如是一张50*50大小的图片,字模处理软件生成的代码,它会自动调整成56*50大小的,在软件中,一定要按原始大小填定数据,不然会出现和原图不同的效果。
另外,如果将图片数据,放入U8glib V1.12 或是 V1.13版中的显示图片例程,得到效果是和原图完全不同。
需要注意的是本程序中用的的库有版本要求,请去维基百科下载,否则该程序不能得到如上效果。http://wiki.microduino.net/index.php?title=Microduino-OLED
还是把库附上吧。
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