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鸿蒙南向带屏应用替换文字显示过程记录

  • 2026-08-12 22:04:53
鸿蒙南向带屏应用替换文字显示过程记录
摘要：本文记录通晓开发板替换界面显示文字的过程，结合前文的图片替换鸿蒙南向带屏应用换logo图片的过程记录，可以共同完成带屏设备的UI展示，让南向设备可以在设备侧输出设备状态，传感器信息等内容，方便近端维护。
文字显示和图片显示类似，分为两部分：获取文字的十六进制数组，设置需要显示的文字。
一、准备文字的数组：
1. 打开PCtoLCD2002（这是嵌入式常用字模软件，给单片机、STM32、Arduino 等嵌入式设备的 LCD/OLED/TFT 液晶屏幕做字模 / 图片点阵提取。）
   2. 打开后，在输入框内输入需要的字，这里用“吴”字举例子，根据自己所需选择字体方向（此处用默认的逐列式）：
设置字体，尺寸等属性后，点击生成字模，下方会生成数组。
默认生成的数组，和代码中的还有些格式上的区别，将在第二步再介绍。
二、修改代码：
1. 首先修改lcd_font.h中的字库，添加刚才生成的数组，注意修改格式，去掉大括号，改成和原有字模相同的格式并保存。
2. 修改dev_ctl.c文件，修改我们需要替换或者展示的文字内容，本例中我们修改“智慧家居”为“智慧吴居”并保存。
到此已经完成了文字的替换和修改。
三、构建镜像和烧录
前文已经介绍过构建和烧录的过程，本文就不再赘述，烧录后的结果如下图所示：
我们可以看到“吴”字是躺着的，这是为什么呢？
TIP：这是因为我们选择了“逐列生成”，所以生成的字模就是倒着的，思考下为什么？
我们修改参数为“逐行生成”，重新再进行构建烧录，就会发现“吴”字站起来了，如下图：
致谢：本文实验过程及截图拍照由小吴同学操作，在此表示感谢~~
本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

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  136. /yingpanguazai/ssd/ssd1/www/c.mffb.com.cn/vendor/topthink/think-template/src/Template.php ( 46.61 KB )
  137. /yingpanguazai/ssd/ssd1/www/c.mffb.com.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/c.mffb.com.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/c.mffb.com.cn/runtime/temp/cefbf809ba1a84190cb04b0cb7abcf79.php ( 11.98 KB )
  140. /yingpanguazai/ssd/ssd1/www/c.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000846s ] mysql:host=127.0.0.1;port=3306;dbname=c_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001400s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000711s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.004428s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001724s ]
  6. SELECT * FROM `set` [ RunTime:0.000695s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001385s ]
  8. SELECT * FROM `article` WHERE `id` = 502910 LIMIT 1 [ RunTime:0.007862s ]
  9. UPDATE `article` SET `lasttime` = 1787099355 WHERE `id` = 502910 [ RunTime:0.007392s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000675s ]
  11. SELECT * FROM `article` WHERE `id` < 502910 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002374s ]
  12. SELECT * FROM `article` WHERE `id` > 502910 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002903s ]
  13. SELECT * FROM `article` WHERE `id` < 502910 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.023036s ]
  14. SELECT * FROM `article` WHERE `id` < 502910 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.014541s ]
  15. SELECT * FROM `article` WHERE `id` < 502910 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.016966s ]
0.261528s