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This article will explain in detail what the development direction of embedded linux is after learning, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have some understanding of the relevant knowledge after reading this article.

What can embedded linux do?

1. System design work

In the design phase of the system, the system analyst will determine the basic composition of the hardware of the system according to the requirements, choose which processor to use, which operating system to use, and use those software development tools according to the requirements of the system. System analysts are often people who have participated in the whole process of embedded system design, have a better understanding of the industry of system application, and are very clear about the development process of embedded system itself.

2. Hardware design work

The system hardware designer needs to design the hardware schematic according to the design results of the system analyst. Hardware designers are usually required to be familiar with the hardware composition of embedded systems.

Hardware designers need to understand the basic working principle, connection and use of common hardware circuit elements such as embedded system processor, memory (Flash,SDRAM), Ethernet MAC chip, audio / video codec chip, power management chip, bus interface circuit (USB,PCI), liquid crystal display module, programmable logic device (FPGA/CPLD), wireless network communication module (Bluetooth,WLAN,GPRS). Use precautions, basic debugging methods and so on.

The schematics of many companies' evaluation boards can be found on the network, which should be carefully studied to find out the connection methods and reasons between processors and memory, network cards, liquid crystal modules and other devices.

Through the study of these circuits, we can quickly understand the composition of the whole embedded system, although these circuits are different from those in actual products, especially for handheld devices, but these differences do not affect beginners to learn the basic structure of embedded system hardware design.

3. Porting driver and operating system

Compared with the development of traditional 8-bit single-chip microcomputer system, a significant difference between the development of modern embedded system and the development of traditional 8-bit single-chip microcomputer system is the wide use of embedded operating system. After getting the soldered circuit board and conducting basic testing, it is necessary to port the driver and operating system.

The first step is the preparation and migration of Bootloader. Bootloader is equivalent to BIOS of PC system. For some embedded operating systems, such as uc/OSII without bootloader, it can also be developed and debugged. But for WindowsCE and embedded linux systems, Bootloader is a must.

4. Development of application program

The application development of embedded system is not very different from that of developing application on PC computer. As far as Windows CE system is concerned, Microsoft has provided relatively perfect development tools. Developers can use Windows's C # language to develop and simulate and debug applications directly on PC, or connect the target system to a PC machine for online debugging.

Now many systems support J2ME (embedded system version of JAVA), which makes JAVA have a great advantage in embedded system application development. In addition, as a professional embedded system software developer, we also need to fully understand object-oriented technology and design patterns and other aspects of knowledge, of course, as beginners can not in-depth study of this aspect.

Students should continue to explore knowledge in the process of learning embedded, and there will be a great progress after learning step by step.

On the direction of the development of embedded linux to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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