MCU C language development

Application of C language in the development of single-chip microcomputer

With the continuous development of today's computer application technology, under the role of single-chip microcomputer, today's society has gradually entered the era of intelligent development. The research and development of single-chip microcomputer has been highly valued by all fields of society, and has become an important symbol for judging the degree of social modernization in the new era. . In the past, the development of single-chip microcomputers was mostly carried out with the help of simple and convenient assembly language, but in the face of the urgent needs of various functions of single-chip microcomputers in various fields of society, single-chip microcomputers urgently need to realize the optimization of structure and function under the influence of multiple languages. As a result, C language has appeared in the development of single-chip microcomputers by virtue of its strong portability and high-level language features, which has greatly promoted the future development of single-chip microcomputers. It can be said that the application of C language in the development of single-chip microcomputer has become a general trend, which is of great significance to the long-term development of single-chip microcomputer development. For this reason, as an ordinary single-chip microcomputer researcher, it is necessary for us to conduct an in-depth analysis and discussion on the application of C language in the development of single-chip microcomputers in combination with the analysis of the current social and technological development forms, so as to promote the development of C language in all aspects. The full play of the advantages can provide more reference opinions and suggestions for the development of high-quality and multi-functional single-chip microcomputers.

1. Analysis of concepts related to C language and single-chip microcomputer

1.1 Introduction to C language

C language is a commonly used computer programming language, which is mainly used for the underlying software development of the network base end and system background, so it shows a good function in dealing with low-level software development problems. The main goal of the C language at the beginning of its development was to effectively improve the effectiveness of computer programming work, to effectively deal with low-level memory programming problems with the simplest compilation method, and to endow the C language with good performance while reducing the generation of machine codes as much as possible. The cross-platform adaptability makes it easy to run freely even in the absence of operating environment support. The difference between the C language and the common C++, Java and other languages is that its programming tasks are mainly process-oriented rather than objects. The basic features of C language mainly include: First, C language has advanced language attributes. It perfectly combines the basic structural features of high-level languages and the practical features of low-level languages; secondly, C language is a structural language. Provide users with recyclable and easy-to-call program statements in the form of functions, so as to separate data from code, ensure a clear program structure and make each part have good program independence; finally, the C language code level can be Realize cross-platform operation. C language can run freely in Windows, UNIX, DOS and other operating systems, and it has lower requirements on the hardware environment for language operation. Therefore, compared with other languages, C language is more flexible and convenient to use.

1.2 Introduction to MCU

Single-chip microcomputer is also called single-chip controller, and its function is not to solve a single logic problem, but to include various functions of the entire computer system. In particular, the single-chip microcomputer can integrate CPU, RAM, ROM, A/D converter, interrupt system, pulse width modulation circuit, etc., into a small silicon chip under the action of VLSI technology to form a fully functional microcomputer system. Therefore, we can regard the integrated circuit chip as a single-chip microcomputer as a special microcomputer. Compared with a real computer, although it lacks I/O equipment, it has unique advantages in terms of price, quality, and volume. Advantages, which provide great convenience for the development of its various functions and applications in multiple fields. Today, with the continuous development of computer technology in our country and the deepening of the research on single-chip microcomputers, the current single-chip microcomputers perform well in various fields of society, and have a very wide range of application markets, as small as navigation systems, household appliances, and communications in our daily life. Equipment, smart IC cards, smart toys, as large as the implementation of industrial control, smart meters, data transmission, robot research and development, medical equipment, etc. are all under the role of single-chip microcomputers to realize the intelligent upgrade of products in the new era.

2. The advantages of C language in the development of single-chip microcomputer

2.1 Contribute to the improvement of developer work efficiency

In the development of single-chip microcomputer, although assembly language has many advantages in terms of program execution efficiency and resource occupation, it still has a large gap with C language in terms of program language portability. This is also an important reason why C language is gradually replacing assembly language and is widely used in the development of single-chip microcomputers. With good program portability and environmental adaptability, the C language can be read by programmers under any circumstances and used to solve various programming problems, which greatly saves the work efficiency of programmers and reduces Complexity due to multiple language variations. At the same time, the C language also has good advantages in the integrity of the program structure, etc., and performs well in terms of compilation efficiency and operation speed, which makes programmers do not have to worry about trivial problems in program design. , which greatly improves the work efficiency of program developers.

2.2 Contribute to the improvement of the development quality of single-chip microcomputer

With the development of intelligence in today's society, from the research and development of high-tech products to all kinds of electrical appliances and electronic products in people's daily life, it is necessary to use the single-chip microcomputer to give these products unique functions, and then to meet people's desire for convenience. , Intelligent life needs. However, in the face of the rapidly changing computer information technology, people have higher and higher expectations for intelligent life while learning more about computer information technology knowledge, which requires us to always keep the development of single-chip Constantly innovating, in order to make certain improvements in terms of function and quality according to social needs. Due to the advantages of both high-level and low-level languages, the C language can directly access various hardware during the application process, and it also supports programming design from the top down, which provides the possibility for the innovation of single-chip functions. Contribute to the improvement of the development quality of single-chip microcomputer.

2.3 Contribute to the optimization of MCU development program

We have also mentioned in the overview of the article that one of the important features of the C language is that it has the characteristics of a structured language, that is, the programs are separated from each other in terms of data and code, and they communicate with each other except for information exchange. Independent and hierarchical. Applying C language to the development of single-chip microcomputer can promote the modular evolution of each program of single-chip microcomputer under the function of this feature of C language, and then realize segmented problem solving in the stages of use, debugging, maintenance, etc. The processing is clearer and more efficient, and promotes the optimization of the single-chip microcomputer development program.

3. The specific application steps of C language in the development of single chip microcomputer

3.1 Development tool download

The download of C language development tools is the primary link for the smooth application of C language in the development of single-chip microcomputers. For this reason, we can download the C language development tools we need from various software download websites. For example, TC2.0, VC++6.0, visualstudio, codeblock, VisualStudioCode, etc. These tools are different in function and difficulty, and we can choose reasonably according to the specific single-chip design. After the download task is completed, it is necessary to decompress and install the installation package, and enter the correct serial number while accepting the genuine inquiry, and then complete the installation step by step under the guidance of the software installation prompt.

3.2 Create C source file

First, we need to create a new project in the downloaded tool, and then create a new file in the created project or add the content of the previous program file to the project. After that, it is necessary to create a new language program file, and use the basic language structure of C language such as void, signed, intint, void, restrict, return, continue to write the required single-chip program step by step in the text editing window, and write After the task is completed, save the file to generate the final C language file.

3.3 Debugging and compiling the program

Debugging and compiling programs is an important intermediate link in the application of C language in the development of single-chip microcomputers. It serves the purpose of checking and improving the written programs. Under the function of debugging, errors in the source files can be effectively found and corrected in time. For this reason, at this stage, the designer is first required to adjust the software to the debugging mode, and then carry out the debugging task at the level of the source program with the help of an emulator. In this process, the designer must check whether the content of the source file is correct or not Carry out careful observation, and complete compilation of the source program, and generate the target module under the action of the editor. After debugging, it is necessary to link the compiled target modules to generate a complete file.

3.4 Generate HEX file

After the C language program is compiled, it can be acquired and executed by the microcontroller by generating the format file HEX with the help of various compilers. Therefore, the generation of the HEX format file can be regarded as the last link in the application of the C language in the design of the microcontroller. Whether the HEX format file generation task can be executed smoothly or not will have extremely important practical significance for the development level, efficiency, performance, and power of the single-chip microcomputer. To do this, first of all, we need to align the task object with the task file, and make full use of its function of programming the chip by generating a HEX file. At the same time, it is necessary to write the single-chip microcomputer HEX format file into the memory under the function of the editor, and debug the performance of the designed single-chip microcomputer under the function of the emulator.

4. Precautions for the application of C language in the development of single-chip microcomputer

4.1 Focus on the improvement of programming code efficiency

Under the background of continuous expansion of MCU research work, C language has become an extremely important programming language in MCU design, and has played an extremely important role in the innovation of MCU functions and performance enhancement. But we must also realize that the C language has been used in single-chip microcomputers for a short time, so various problems will inevitably arise in the process of programming, which will delay the development of single-chip microcomputers. Therefore, when using C language in the development of single-chip microcomputers, one of the important issues we need to pay attention to first is the improvement of the efficiency of C language programming codes. For this reason, before writing the C language MCU program, it is necessary for us to have a full understanding of the various C language editors we use and come into contact with, so as to make a reasonable choice of the editor used in combination with the actual work. . At the same time, it is also necessary to summarize the C language programs that appear frequently in the programming of single-chip microcomputers, and summarize the number of assembly language lines corresponding to them, so as to make a clear understanding of the compilation efficiency of each language. understanding. Furthermore, in the future work, the compilation and execution efficiency of C language programming codes will be effectively improved through the flexible use of compilers and the accurate selection of high-efficiency compilation languages.

4.2 The definition of variable type should be clear

Affected by programming habits, some programmers are used to directly defining new variables at the initial position of the program without considering the inside and outside of the function. Although this practice does not constitute a programming error in principle, it does This practice is likely to have a certain impact on the subsequent execution of the program, so it is not advisable. For this reason, we must pay attention to the clarity of the variable type definition, and make a reasonable choice of the variable placement position according to the different compiler versions. For example, generally speaking, in the C90 version of the compiler, global variables belong outside the function and can only be placed before the reference, while in the latest C99 version, local variables can be flexibly placed at any location.

Summarize

In short, through the above research and discussion, we have a clearer understanding of the advantages and functions of C language in the application of single-chip microcomputers, and we have also seen the important social development trend of C language in the design of single-chip microcomputers. In order to effectively enhance the advantages of C language in the design of single-chip microcomputers, we will continue to increase the research work on single-chip microcomputers and C language in the future work, and strive to explore the bright points of design. development efforts.

The above are the details of the application of C language in the development of single-chip microcomputer introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. We have rich experience in customized development of smart electronic products, can evaluate the development cycle and IC price as soon as possible, and can also calculate the PCBA quotation. We are the agent of Songix single-chip microcomputer and Yingguang single-chip microcomputer agent, selling and developing the MCU and voice IC solutions of Songix and Yingguang. We act as an agent and develop ICs and solutions of Jieli, Ankai, Quanzhi, realtek and other series, and also develop BLE Bluetooth IC, dual-mode Bluetooth module, wifi module, and Internet of Things module. We have hardware design and software development capabilities. Covering circuit design, PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development, voice recognition technology, Bluetooth development, wifi technology, etc. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the development of electronic education products.