After learning embedded , you will start to worry about the development prospects of embedded, and there are also salary issues. You should actually understand these clearly before you learn embedded. Also, if you don’t learn well, you will not be able to get the embedded salary no matter how high the embedded salary is! Let’s learn about what the main work of embedded system is doing.
In the Internet industry, embedded technology comes from behind. Due to the development of the Internet of Things and artificial intelligence , embedded technology is becoming more and more valuable, and more and more people are learning embedded.
There are really a lot of things to learn for embedded Internet of Things. Don’t learn the wrong route and content, which will lead to a lack of salary!
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There are two main domestic embedded companies: companies that are more in-depth in-layer chip companies and more in-app-layer business demand. In fact, most companies do application-level business needs; such as those who work as facial recognition punch-in machines, GPS navigation, and cloud terminal equipment. Unless this type of company is already very large-scale, it is normally in operation for dozens of research and development.
Face check-in: The face recognition module is the core, but the hardware and software are purchased. The company may create c++, QTh to realize the work usage scenarios, data transmission, export and import of the work check-in business and other related programming.
GPS Navigation: GPS module , core driver, Linux, WinCE, no developers of this company need to do the development. For cloud terminal , the core access protocol may be to buy Citrix solution, or to buy Vmware solution. If it doesn't work, you can create a copycat spice protocol and rdp protocol, which are free and open source.
What main work does the embedded system do? There are generally the following types:
1. Embedded system development and design work
In the system design stage, the system analyst will determine the basic composition of the system's hardware according to the needs, choose which processor to use, which operating system to use, and which software development tools to use according to the needs of the system. System analysts are often people who have participated in the entire process of embedded system design, have a relatively good understanding of the system application industry, and are very clear about the development process of embedded system itself.
2. Embedded hardware design work
System hardware designers need to design hardware schematics based on 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 principles of commonly used embedded system processors, memory (Flash, SDRAM), Ethernet MAC chips, audio/video codec chips, power management chips , bus interface circuits (USB, PCI), LCD display modules, programmable logic devices (FPGA/CPLD), wireless network communication modules (Bluetooth, WLAN, GPRS) and other hardware circuit components, connection usage methods, usage precautions, basic debugging methods, etc. You can find schematic diagrams of many company evaluation boards on the Internet. You need to carefully study these schematic diagrams and find out the connection methods and reasons of the processor and memory, network card , LCD modules and other devices. Through the study of these circuits, we can quickly understand the composition of the entire embedded system. Although these circuits are different from the circuits in actual products, especially for handheld devices, these differences do not affect the basic hardware design composition of beginners learning for embedded systems.
3. Driver and operating system migration work
The development of modern embedded systems compared with the development of traditional 8-bit microcontroller systems is the widespread use of embedded operating system . After getting the soldered circuit board and performing basic tests, the driver and operating system transplantation work is required.The first thing to do is to write and port Bootloader. Bootloader is equivalent to the BIOS of the PC system. For some embedded operating systems, such as uc/OSII without bootloader, you can also develop and debug. But for WindowsCE and embedded linux systems, Bootloader is a must.
4. Development of embedded applications
1 The application development of embedded systems is not very different from developing applications on PCs. For Windows CE system, Microsoftml2 has provided relatively complete development tools. Developers can use Windows' C# language to directly develop and simulate and debug applications on PC, or connect the target system to the PC for online debugging. Nowadays, many systems support J2ME (embedded system version of JAVA), which makes JAVA have a great advantage in the development of embedded system application. 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 can not study this content in depth. Students should constantly explore knowledge in the process of learning embeddedness, and after learning step by step, they will make great progress.
The above introduces what the embedded system mainly does. In fact, there are quite a lot of embedded options. After all, embedded is a technical position. If your technology is not up to standard, you will not be able to handle the number of positions. So everyone hopes to be serious when studying.
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