首页 › Microduino › 张老师Microduino-OLED12864显示器显示图片的问题

tom 发表于 2013-8-2 22:40:06

张老师Microduino-OLED12864显示器显示图片的问题

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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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_WIDTH128 //图片宽度
static unsigned char PROGMEM logo16_glcd_bmp[] =
{
/*--宽度x高度=128x64--*/
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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,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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};

#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() {

}

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。

maxims 发表于 2013-11-15 09:43:04

关注一下图片显示

darkorigin 发表于 2014-2-24 10:49:55

不错的教程~~~~

xz1992 发表于 2014-4-23 01:08:45

想在12864OLED上任意显示一个点，但是ssd1306驱动的OLED没有读的功能，所以我用在芯片上开辟显存的方法，用STM32试了下，能达任意显示"点"的效果，但是用STC12C5A60S2却不行，是内存不足还是什么原因？如果用51单片机在OLED12864上实现任意显示"点"，应该如何写？

Super169 发表于 2014-4-23 01:50:17

xz1992 发表于 2014-4-23 01:08 static/image/common/back.gif
想在12864OLED上任意显示一个点，但是ssd1306驱动的OLED没有读的功能，所以我用在芯片上开辟显存的方法，用 ...

我也做了一個相同的庫, 為了要顯示單獨一個點, 只好自建顯存.但12864 的顯示, 就要用去1KB 的記憶.
再加上字型, 如果不能放到 flash, 基本上單單為了 OLED 的顯示, 就要用到 1.5KB 左右.

STC12C5A60S2 的 SRAM 只有 1280,單是 顯存已用了 1024, 餘下 256byte 可用, 再加上宇庫, 以為一般程式中用到的變數,實在太勉強了.

查看完整版本: 张老师Microduino-OLED12864显示器显示图片的问题