嵌入式Linux_Framebuffer_03点阵显示ASCII字符串

Gaoy9303 2021-04-08 01:02:21
linux gitee


要在LCD上显示一个ASCII字符,首先需要找到字符对应的点阵.在Linux的内核源码中有:lib/fonts/font_8x16.c以数组的形式保存各自字符的点阵信息.下图左边就是font_8x16.c中fontdata_8x16数组中字符A的点阵数据。 由上图可知,要以点阵的形式显示某个ASCII字符只需找到此字符在字符点阵数组中的位置,然后取出此字符的点阵数据,进行绘制即可。 代码示例

版权声明
本文为[Gaoy9303]所创,转载请带上原文链接,感谢
https://my.oschina.net/u/4026445/blog/5011575

  1. Java高并发测试框架JCStress
  2. 12000 words, thoroughly explain the optimization principle of MySQL, collect it before you finish
  3. R2dbc, spring data JDBC and Webflux case introduction
  4. Uncle Bob: comparison of class and data structure! Problems that every good software designer and architect should keep in mind
  5. Humor: is functional programming just a few people's pastime? - Mike Hadlow
  6. Java high concurrency testing framework jcstress
  7. Java高并发测试框架JCStress
  8. 基于Spring Boot 2.3以上版本方便创建分层Docker镜像
  9. 使用SpringBoot实现在运行时动态创建Spring Bean
  10. Java high concurrency testing framework jcstress
  11. It is convenient to create hierarchical docker image based on spring boot version 2.3 or above
  12. Using springboot to create spring bean dynamically at runtime
  13. The constructor StringBuilder(String) is undefined 解决方法
  14. The constructor StringBuilder (string) is undefined solution
  15. SpringMVC 九大组件之 ViewResolver 深入分析
  16. SpringMVC 九大组件之 HandlerAdapter 深入分析
  17. SpringMVC 九大组件之 HandlerMapping 深入分析
  18. Spring Boot 定义接口的方法是否可以声明为 private?
  19. SpringMVC 源码分析之 DispatcherServlet
  20. SpringMVC 源码分析之 FrameworkServlet
  21. Spring Boot 中如何统一 API 接口响应格式?
  22. 深入分析 SpringMVC 参数解析器
  23. SpringBoot 中如何自定义参数解析器?
  24. SpringMVC 初始化流程分析
  25. 如何优雅的实现 Spring Boot 接口参数加密解密?
  26. Spring5 里边的新玩法!这种 URL 请求让我涨见识了!
  27. SpringMVC 中的参数还能这么传递?涨姿势了!
  28. 手把手教你开发 MyBatis 插件
  29. 细品 Spring Boot+Thymeleaf,还有这么多好玩的细节!
  30. Spring Boot 日志各种使用姿势,是时候捋清楚了!
  31. Deep analysis of viewresolver of nine components of spring MVC
  32. In depth analysis of handleradapter of nine components of spring MVC
  33. In depth analysis of handlermapping of nine components of spring MVC
  34. Can spring boot define interface methods to be declared private?
  35. Dispatcherservlet of spring MVC source code analysis
  36. Framework servlet for spring MVC source code analysis
  37. How to unify API response format in spring boot?
  38. In depth analysis of spring MVC parameter parser
  39. How to customize parameter parser in springboot?
  40. Analysis of spring MVC initialization process
  41. How to realize encryption and decryption of spring boot interface parameters gracefully?
  42. A new way to play in spring 5! This kind of URL request makes me see better!
  43. Can parameters in spring MVC be passed like this? It's up!
  44. Hand in hand to teach you how to develop mybatis plug-ins
  45. Fine spring boot + thymeleaf, there are so many fun details!
  46. Spring boot logs all kinds of posture, it's time to clear!
  47. Web 3.0踏浪而来,分布式存储举足轻重|时空云邀请您参加Web3.0中国峰会暨分布式存储行业大会
  48. spring-aop 进不了切面方法的解决办法
  49. Web 3.0 is coming, distributed storage is very important | spatiotemporal cloud invites you to attend Web3.0 China Summit and distributed storage industry conference
  50. The solution of spring AOP can't enter the section method
  51. Linux中如何启用root用户
  52. How to enable root in Linux
  53. 踩坑 MySQL 索引,看看你真的会用吗?
  54. Hive优化之配置参数的优化(一)
  55. Step on the MySQL index to see if you really know how to use it?
  56. Optimization of configuration parameters for hive optimization (1)
  57. Linux入门教程资料分享
  58. Introduction to Linux
  59. 外部连接mysql docker容器异常
  60. Exception of external connection MySQL docker container