1. C language
The learning of embedded Linux engineers needs to have a certain C language foundation. C language is the most important and most important programming language in the embedded field. Through a large number of programming examples, it is necessary to understand the basic programming and advanced programming knowledge of C language. Including: basic data types, arrays, pointers, structures, linked lists, file operations, queues, stacks, etc.
2. Linux basics
The concept and installation method of the Linux operating system, a detailed understanding of the directory structure, basic commands, editor VI, compiler GCC, debugger GDB and Make project management tools under Linux, Shell Makefile scripting and other knowledge, the construction of embedded development environment .
3. Linux system programming
4. Linux network programming
Computer network is widely used in the application development process of embedded Linux system, through Linux network development, TCP/IP protocol, socket programming, TCP network programming, UDP network programming, Web programming development, etc., to fully understand Linux network application development . Focus on learning APIs related to network programming, be proficient in the programming method of TCP protocol server and the implementation of concurrent server, understand HTTP protocol and its implementation method, be familiar with the principles and programming methods of UDP broadcast and multicast, and master the hybrid C/S architecture network communication system Design, familiar with HTML, Javascript and other Web programming technologies and implementation methods.
5. Data Structures and Algorithms
Data structures and algorithms will be widely used in embedded underlying drivers, communication protocols, and various engine development, and their mastery will directly affect the efficiency, simplicity and robustness of programs. This stage of learning should focus on understanding the basic content of data structures and algorithms, including sequential lists, linked lists, queues, stacks, trees, graphs, hash tables, various search and sorting algorithms and other applications and their C language implementation process.
6. C++++, QT
C++ is one of the main languages ​​for Linux application development. This stage focuses on mastering the basic ideas of object-oriented programming and the important contents of C++. Graphical interface programming is a very important part of embedded development. Because QT has powerful functions such as cross-platform, object-oriented, rich API, support for 2D/3D rendering, XML, and multiple languages, it has been widely used in GUI development in the embedded field. The learning enables students to be proficient in writing GUI programs and porting QT applications to the Cortex-A8 platform. Including IDE usage, QT widgets and layout managers, application of information and slot mechanisms, mouse, keyboard and drawing event processing and file processing applications.
7. Cortex A8, Linux platform development
By processing s5pv210 based on ARM Cortex-A8, understand the basic reading skills of the chip manual, master the s5pv210 system resources, clock controller, power management, abnormal interrupt controller, nand flash controller and other modules, and prepare for the construction of the underlying platform. The Linux platform includes kernel cutting, kernel transplantation, cross-compilation, GNU tool use, kernel debugging, Bootloader introduction, production and principle analysis, root file system production, and adding your own modules to the kernel, and running your own on the s5pv210 experimental platform. Linux system, integrate the entire process of deploying the Linux system. Also understand the Android operating system development process. Android system is an open source operating system based on Linux platform. The platform consists of operating system, middleware, user interface and application software. It is the first truly open and complete mobile software for mobile terminals, and its application is no longer limited at present. For mobile terminals, it also includes consumer electronic products such as data TVs, set-top boxes, and PDAs.
8. Driver development
Driver design is an important and difficult part of embedded Linux development. In this stage of learning, you should be familiar with the Linux kernel mechanism, the interface between drivers and user-level applications, and master the concurrent operation of the system on the device. Familiar with the working principle of the developed hardware, have the basic knowledge of ARM hardware interface, familiar with the resources of ARM Cortex-A8 processor s5pv210, master the Linux device driver principle framework, familiar with common Linux advanced character devices, block devices, network devices, USB Device and other driver development, can be independently competent for underlying driver development at work.
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