Linux development engineers develop something.

One: C language: Embedded Linux development engineers need to have a certain foundation of C language, which is an important and main programming language in the embedded field. Through a large number of programming examples, they focus on understanding 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. Basic knowledge of Linux: the concept and installation method of Linux operating system, knowing the directory structure, basic commands, editor VI, compiler GCC, debugger GDB and Make project management tools, Shell Makefile scripts and other knowledge in detail, and building an embedded development environment.

Three: Linux system programming: focus on the standard I/O library, multi-process and multi-thread in Linux multi-task programming, inter-process communication (pipeline, FIFO, message queue, * * * * shared memory, signal, semaphore, etc. ), synchronization and mutual exclusion access control to * * * shared resources and other important knowledge, mainly to improve the understanding of Linux application development and the ability of code debugging.

Fourth, Linux network programming: computer networks are widely used in the application development of embedded Linux systems. Through Linux network development, TCP/IP protocol, socket programming, TCP network programming, UDP network programming, Web programming and other aspects, we can fully understand the development of Linux network applications. Focus on learning the API related to network programming, be familiar with the programming method of TCP protocol server and the implementation of concurrent server, understand the HTTP protocol and its implementation method, be familiar with the principle and programming method of UDP broadcasting and multicast, master the design of network communication system with mixed C/S architecture, and be familiar with Web programming technologies and implementation methods such as HTML and JavaScript.

5. Data structures and algorithms: Data structures and algorithms will be widely used in the development of embedded drivers, communication protocols and various engines, and their mastery will directly affect the efficiency, simplicity and robustness of the program. At this learning stage, we should focus on understanding the basic contents of data structures and algorithms, including sequential tables, linked lists, queues, stacks, trees, graphs, hash tables, various search and sorting algorithms and their implementation in C language.

Six: C and Qt: C are one of the main languages for Linux application development. At this stage, we focus on the basic idea of object-oriented programming and the important content of C. Graphical interface programming is a very important link in embedded development. QT has been widely used in GUI development in embedded field because of its powerful cross-platform, object-oriented, rich API, support for 2D/3D rendering, support for XML and multilingual. At this stage, students can skillfully write GUI programs and transplant QT applications to Cortex-A8 platform through learning based on QT graphics library. Including the use of IDE, QT component and layout manager, the application of information and slot mechanism, the application of mouse and keyboard, and the handling of drawing events and files.

Seven: Cortex A8 and Linux platform development: through the processing of s5pv2 10 based on ARM Cortex-A8, we can understand the basic reading skills of the chip manual, master the modules of s5pv2 10 system resources, clock controller, power management, abnormal interrupt controller, nand flash controller and so on, so as to prepare for the construction of the underlying platform. Linux platform includes kernel reduction, kernel transplantation, cross-compilation, GNU tool use, kernel debugging, Bootloader introduction, production and principle analysis, root file system production and adding its own modules in the kernel. We run our own Linux system on the experimental platform of s5pv2 10, which integrates the whole process of deploying Linux system. At the same time understand the development process of Android operating system. Android system is an open source operating system based on Linux platform, which consists of operating system, middleware, user interface and application software. It is the first truly open and complete mobile terminal mobile software. At present, its application is no longer limited to mobile terminals, but also includes consumer electronic products such as data TV, set-top box and PDA.

Eight: driver development: driver design is the focus and difficulty of embedded Linux development. At this stage, we should be familiar with the kernel mechanism of Linux, the interface between drivers and user-level applications, and master the concurrent operation of the system on devices. Familiar with the working principle of the developed hardware, basic knowledge of ARM hardware interface, resources of ARM Cortex-A8 processor s5pv2 10, the principle framework of Linux device driver, and the driver development of advanced Linux character devices, block devices, network devices and USB devices. Common in engineering, can independently develop the underlying driver in the work.

The above contents are the main things that linux development engineers will do, and it seems quite a lot. In fact, the study of linux comes step by step, and gradually you will find that everything is logical. Still hesitating to study? Let's start!