Recently, I have been learning about system porting. During the process of learning and debugging, I encountered and solved many problems, but I always felt a vague sense of confusion about our development results. Upon reflection, the main reason is that we do not have a profound understanding of our development environment. Sometimes, a few … Read more
Introduction Due to business needs, I started to involve in embedded Linux development from the familiar Android development over the past year. The programming language also changed from Java/Kotlin to the more challenging C++. There are actually many differences, and I have organized this article to compare the similarities and differences between these two development … Read more
In the field of microcontrollers, C++ may not be very popular, but in the field of embedded Linux, C++ is one of the main players in the application layer, many open source libraries are written in C++. C++, a well-known programming language. As a multi-paradigm general-purpose programming language, it is applicable in a wide range … Read more
Click on the “Embedded Application Research Institute” above, and select “Top/Star Official Account“ Useful Resources Delivered First Hand! Source | CSDN-Stop at Perfection 656 Compiled & Formatted | Embedded Application Research Institute 1. Root File System Layout The layout of the embedded Linux root file system is recommended to follow the FHS standard. In fact, … Read more
Currently, most industrial control systems are embedded systems (a few simple systems use bare metal development directly). An “embedded system” refers to a computer system with specific functions embedded within specific hardware. Embedded systems generally consist of a real-time operating system (RTOS) + application software (a PLC itself is also an embedded system). Common real-time … Read more
1 Introduction to Linux Library Functions Linux provides a rich set of library functions that cover various domains, from file operations to network programming, graphical interfaces, mathematical operations, and more. Most of these library functions are standard C library functions, along with some that are specific to the Linux system. Linux library functions are typically … Read more
Click the blue text above to follow us. In Linux, a Read-Write Lock provides a synchronization mechanism that allows multiple threads to read shared resources concurrently, but only one thread can perform write operations on that resource. Compared to mutexes or spinlocks, read-write locks offer higher concurrency because they have three states: read-locked state, write-locked … Read more
1. What is a Character Device? First, we need to understand what a character device is. A character device is, simply put, a device that reads and writes data byte by byte, like keyboards, mice, and serial ports. Unlike block devices (like hard drives), character devices do not support random access; data must be read … Read more
The embedded Linux system generally supports WiFi networking, which can be achieved through sh scripts or other programming languages. This article introduces the execution principle of a script that configures WiFi using sh scripts. 1. Introduction to sh Script for WiFi Networking Here, we take the WiFi startup script in the Feilin development board as … Read more
Source: https://www.cnblogs.com/heat-man/p/4657157.html Previously, on the embedded Linux development board, we implemented a remote control system for smart homes from the lowest level, but it was connected to a switch using an Ethernet cable, which felt outdated. Coincidentally, while looking for a job in Beijing, I found a company that makes WiFi modules. My boss tasked … Read more