What can you do by learning embedded linux?

Learning embedded Linux can do: 1. System design work; have a good understanding of the system application industry and a very clear understanding of the development process of the embedded system itself. 2. Hardware design work; hardware designers need to be familiar with the hardware components of embedded systems. 3. Driver and operating system transplantation work. 4. Application development for embedded systems.

#What can embedded linux do?

1. System design work

In the system design stage, the system analyst will determine the basic composition of the system's hardware according to the needs, and choose which processor to use and which processor to use based on the system's needs. operating system and use those software development tools. System analysts are often people who have participated in the entire process of embedded system design, have a good understanding of the system application industry, and are very clear about the development process of the embedded system itself.

2. Hardware design work

System hardware designers need to design the hardware schematic diagram based on the design results of the system analyst. Hardware designers are usually required to be familiar with the hardware components of embedded systems.

Hardware designers need to understand commonly used embedded system processors, memories (Flash, SDRAM), Ethernet MAC chips, audio/video codec chips, power management chips, bus interface circuits (USB, PCI) , the basic working principles of hardware circuit elements such as liquid crystal display modules, programmable logic devices (FPGA/CPLD), wireless network communication modules (Bluetooth, WLAN, GPRS), connection methods, usage precautions, basic debugging methods, etc.

You can find schematic diagrams of many companies' evaluation boards on the Internet. You should study these schematic diagrams carefully to find out how and why the processor is connected to the memory, network card, LCD module and other devices.

Through the study of these circuits, we can quickly understand the composition of the entire embedded system. Although there are certain differences between these circuits and the circuits in actual products, especially for handheld devices, these differences do not affect Beginners learn the basic components of hardware design for embedded systems.

3. Driver and operating system transplantation work

Compared with the development of traditional 8-bit microcontroller systems, a significant difference between the development of modern embedded systems is the widespread use of embedded operating systems . After getting the soldered circuit board and conducting basic tests, it is time to transplant the driver and operating system.

The first step is to write and transplant the Bootloader. Bootloader is equivalent to the BIOS of the PC system. For some embedded operating systems, such as uc/OSII without bootloader, development and debugging can also be done. But for WindowsCE and embedded Linux systems, Bootloader is necessary.

4. Application development

The difference between application development for embedded systems and application development on PC is not very big. For Windows CE systems, Microsoft has provided relatively complete development tools. Developers can use the C# language of Windows to develop and simulate debugging applications directly on the PC, or they can connect the target system to the PC for online debugging.

Now many systems support J2ME (embedded system version of JAVA), which gives JAVA a greater advantage in embedded system application development. In addition, as a professional embedded system software developer, you also need to fully understand the knowledge of object-oriented technology and design patterns. Of course, as a beginner, you do not need to study this aspect in depth.

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

The above is the detailed content of What can you do by learning embedded linux?. For more information, please follow other related articles on the PHP Chinese website!