【换取逻辑分析仪】OLED单色屏幕字符及图片取模方法-电子产品世界论坛

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【换取逻辑分析仪】OLED单色屏幕字符及图片取模方法

quansirx

工程师

2024-09-30 23:29:21 打赏

只看楼主 1楼

一、前言

本文将介绍如何使用取模工具完成0.96寸OLED单色屏幕字符、图片取模。屏幕如下图所示，其尺寸宽高为128*64 piexl。OLED为有机发光二极管，并且其为单色屏，意味着一个像素的点亮只需要输入高电平，像素点熄灭则输入低电平。该平面驱动芯片为SSD1306，其内部集成了128*64/8的显示RAM，用于控制像素点的亮灭。

微信图片_20240923204310.png

二、取模工具PCtoLCD

2.1

取模工具能够将输入的字符数据、图片自动生成显存数组

VBPY(GSKY3E1VN33][`_T4K.png

汉字占用像素区域比较大，即最少占用16*16个像素，太小了汉字会不清晰。

在汉字显存数组可以看到单个汉字占用32个字节空间，正好等于16*16/8

最后保存字模到txt文本中，之后可以直接导入程序引用。

2.2

取模设置说明

TH8S@LP]6{9DI9DP5WNGJ}4.png

点阵格式与单色像素是高低电平驱动有关；

取模方式与屏幕驱动有关，一般是水平逐行扫描；

自定义格式与期望得到的输出格式有关。

实际使用参考以上图片设置就可以

2.3 屏幕字符显示测试

屏幕驱动在以下帖子有介绍。

https://forum.eepw.com.cn/thread/386269/1

将字体取模得到的显存数组复制到oledfont.h文件

//部分汉字
const unsigned char Hzk[][32]=
{
{0x00,0xFE,0x02,0x12,0x92,0x92,0x92,0xF2,0x92,0x92,0x92,0x12,0x02,0xFE,0x00,0x00},
{0x00,0xFF,0x40,0x48,0x48,0x48,0x48,0x4F,0x48,0x4A,0x4C,0x48,0x40,0xFF,0x00,0x00},/*"国",0*/

{0x00,0x00,0xFC,0x04,0x84,0x84,0x84,0x85,0xF6,0x84,0x84,0x84,0x84,0x84,0x04,0x00},
{0x40,0x30,0x0F,0x80,0x40,0x20,0x18,0x06,0x01,0x06,0x18,0x20,0x40,0x80,0x80,0x00},/*"庆",1*/

{0x04,0x44,0x44,0x44,0x5F,0x44,0xC4,0x44,0x44,0x44,0x5F,0x44,0xC4,0x04,0x04,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x08,0x10,0x08,0x07,0x00,0x00,0x00},/*"节",2*/

{0x00,0xE0,0x00,0xFF,0x10,0x20,0x08,0x08,0x08,0xFF,0x08,0x08,0xF8,0x00,0x00,0x00},
{0x01,0x00,0x00,0xFF,0x00,0x81,0x41,0x31,0x0D,0x03,0x0D,0x31,0x41,0x81,0x81,0x00},/*"快",3*/

{0x00,0x00,0xE0,0x9C,0x84,0x84,0x84,0xF4,0x82,0x82,0x83,0x82,0x80,0x80,0x00,0x00},
{0x00,0x20,0x10,0x08,0x06,0x40,0x80,0x7F,0x00,0x00,0x02,0x04,0x08,0x30,0x00,0x00},/*"乐",4*/
};

%XR{]TE52LF`~1DQ@Q]8(LO.png

在while循环体加入如下测试代码

/* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {

    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
		OLED_Clear(); 
		
		HAL_Delay(300);
		OLED_Clear();
		HAL_Delay(300); 
		OLED_ShowCHinese(0,3,0); //显示第一个汉字，参数依次为横坐标显示的位置，纵坐标显示的位置，显存数组索引
		OLED_ShowCHinese(16,3,1);//第2个汉字
		OLED_ShowCHinese(32,3,2);//第3个汉字
		OLED_ShowCHinese(48,3,3);//第4个汉字
		OLED_ShowCHinese(64,3,4);//第5个汉字
	        HAL_Delay(300); 
  }
  /* USER CODE END 3 */

实验效果

2DVWJ1`(3D%XHJUX@0UW_V3.png

三、图片取模

3.1

G8Y`]3{6T~3MQKGI`%%JJ)R.png

将取模模式设为图形模式

G`WB}%9L3@XSY$UR2W_I]1C.png

新建图像，尺寸大小设为128*64

打开一张bmp图片，图片大小为128*64

$5QHCD82]_~99JM1]1QTX]I.png

生成取模显存数组

8)L4SZ{[03Y`WMKISOMK`11.png

3.2

声明图片显存数组

const unsigned char BMP1[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0xC0,0xC0,0xC0,0xF0,0xF0,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0xE0,0xFC,0xFF,0xFE,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x0F,0x07,0x0F,0x1F,0x1F,0x03,0x03,
0x00,0x00,0x00,0xE0,0xC0,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x0C,0x1C,0x1C,0x3C,0x7C,0xFC,0xFC,0xFC,
0xFC,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0xFC,0xFC,0xFC,0x7C,0x3C,0x3C,0x1C,
0x0C,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x06,0x06,0x06,0x7F,0x3F,0x1F,0x1F,0x1F,0x19,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0xFE,0xFF,
0xFF,0x7F,0x3F,0x3F,0x1F,0x1F,0x3F,0x7F,0xFF,0xFF,0xFE,0xF0,0x80,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xC0,0xC0,0xC0,0xC0,0xF8,0xF8,0xC0,0xC0,0xC0,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x03,0x01,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x03,0x03,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0xC0,0x80,0xC0,0xE0,0xE0,0x00,0x00,
0x00,0x00,0x0F,0x0F,0x07,0x07,0x07,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x0F,0x0F,0x1F,0x3F,0x3F,0x03,0x03,
0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};

while循环体加入如下测试代码

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
    /* USER CODE BEGIN 3 */
		HAL_Delay(500);
		OLED_Clear();
		OLED_ShowString(5,1,"eepw.com.cn",16);
		OLED_ShowCHinese(0,4,0); //国
		OLED_ShowCHinese(16,4,1);//庆
		OLED_ShowCHinese(32,4,2);//节
		OLED_ShowCHinese(48,4,3);//快
		OLED_ShowCHinese(64,4,4);//乐
		HAL_Delay(500);
		OLED_Clear();
		HAL_Delay(500);
		OLED_DrawBMP(0,0,64*2,8,BMP1);
		HAL_Delay(500);
		OLED_Clear();	
		OLED_DrawBMP(0,0,64*2,8,BMP2);
	  HAL_Delay(500);
  }
  /* USER CODE END 3 */

3.3 实验效果

关键词： OLED屏幕取模

wzj9944

专家

2024-10-01 02:25:04 打赏

2楼

感谢楼主分享

tanfpga

专家

2024-10-02 09:16:32 打赏

3楼

感谢楼主分享

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【换取逻辑分析仪】OLED单色屏幕字符及图片取模方法

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