Click the blue text to follow us Hello everyone Welcome to 【Gao Xun Industrial Control】 Second issue This issue is brought to you by Teacher Zhang Zhirong Arduino Maker Series Basic Application Explanation Lesson Two Arduino IDE Development Environment and Driver Installation In the previous content, we learned that: Arduino consists of a microcontroller and … Read more
Embedded Systems: The “Invisible Heroes” Around Us In today’s digital age, embedded systems are like “behind-the-scenes heroes,” quietly yet omnipresently integrated into our daily lives. When you are gently awakened by a smart alarm clock in the morning, it is the embedded system running in an orderly manner behind its precise timing function; stepping into … Read more
1. Introduction In the Linux device driver model, a bus is an abstract concept, a special type of device. In the implementation of the device model, the kernel specifies that each device in the system must be connected to a bus, which can be an internal Bus, a virtual Bus, or a Platform bus. The … Read more
Embedded Linux QQ Group: 175159209, enthusiasts are welcome to join and discuss technical issues! The platform bus is a virtual bus, and the corresponding device is a platform_device, while the driver is a platform_driver. In the device driver model of Linux 2.6, I2C, RTC, LCD, etc. are classified as platform_device. The bus binds devices and … Read more
Click the blue text above to follow me and read beautiful articles. The Linux operating system’s kernel manages various hardware devices in the system, including buses, devices, and drivers. This article will introduce the basic concepts of buses, devices, and drivers in the Linux system, as well as their relationships. By combining relevant /sys directory … Read more
globalmem Looking at Linux device driver development details, the chapter on character device drivers provides test code and application programs that are very helpful for beginners. The reason for writing this article is that I noticed I had not yet written about character devices, despite having previously published articles. As for the role of the … Read more
1. Driver Development: Errors Shadow Us In the field of C++ device driver development, error handling and exception management are like a hidden “shadow” that constantly affects the quality and stability of the driver program. When we eagerly expect the device to run smoothly, but encounter issues like the device not being recognized or data … Read more
1. Interrupts: The “Emergency Contact” Between Devices and Processors In the complex operation of computer systems, interrupts are a crucial technology. Simply put, an interrupt is when the computer pauses the currently running program to execute a related service program upon encountering an urgent event that needs to be processed. Once completed, it automatically returns … Read more
Device Driver – The “Translator” Between Hardware and Software In the world of computers, hardware is like human limbs, responsible for executing various specific tasks; software acts like the human brain, issuing commands and processing data. The device driver is the crucial bridge connecting hardware and the operating system, playing an essential “translating” role. Whenever … Read more
The demand for device driver models includes the bus, device, and driver models. If we compare their relationships to examples in everyday life, it becomes easier to understand. For instance, a charging wall socket quietly embedded in the wall can fulfill its mission of charging, regardless of whether the device is a computer or a … Read more