There is a library so simple that it makes you scream: Requests . Remember the pain you experienced using urllib and urllib2? Forget about them! Requests is like a caring web assistant that can achieve the most complex web interactions with the least amount of code. The Simplest GET Request import requests response = requests.get('https://api.github.com') … Read more
▼ Click the card below to follow me ▲ Click the card above to follow me Httpx: A Cool New Way to Make HTTP Requests in Python! HTTP requests have always been a common requirement in Python development, and the traditional requests library has been with us for a long time. But today, I want … Read more
MQTT Protocol 1.1 Introduction MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol designed for low-bandwidth, high-latency networks. It provides real-time, reliable messaging services for remote devices with minimal code and bandwidth usage. MQTT operates over TCP and is classified as an application layer protocol. 1.2 Message Format A fixed header, a variable header, … Read more
Overview of MQTT Protocol MQTT is a standard messaging protocol for the Internet of Things (IoT). It is designed as a very lightweight publish/subscribe messaging transport, making it ideal for connecting remote devices with minimal code footprint and network bandwidth. The MQTT protocol has the following characteristics: Lightweight and Efficient: The MQTT client is very … Read more
Help Hello everyone, I wonder if you have encountered the following issues while using or learning the CANopen protocol: The user manual for CANopen communication devices is difficult to understand, you don’t know where to start with a newly acquired CANopen device, or you want to develop a CANopen communication device but don’t know where … Read more
PROFIBUS DP Basic Introduction PROFIBUS DP is a classic fieldbus protocol introduced by Siemens many years ago, widely used in various industrial applications. With more domestic manufacturers participating in the production and manufacturing of PROFIBUS DP related devices, various designs for the physical connection of PROFIBUS DP have emerged. To facilitate everyone in designing the … Read more
Fault Diagnosis When the S7-1200 operates as a DP Master, the CPU does not stop and does not require downloading an organization block when a DP slave is lost. There are several methods for diagnosing faults in PROFIBUS DP: 1. Through the Indicator Lights on the Module The DIAG light on the front panel is … Read more
Hello everyone, today we are going to discuss a topic that is both frustrating and rewarding in the industrial field—how to make the “old gentleman” Modbus and the “modern youth” TCP/IP shake hands and make peace. Last year, while debugging a sewage treatment plant project, I encountered a “generation gap” issue between these two protocols, … Read more
1. What is CMake CMake is a more advanced build configuration tool than make, supporting different platforms and compilers, generating corresponding Makefiles or vcproj projects (Visual Studio project files). By writing a CMakeLists.txt file, you can control the generated Makefile, thereby controlling the build process. The Makefile generated by CMake not only allows you to … Read more
The eBook “A Beginner’s Guide to Modern CMake” http://t.cn/A6r1ls4q “People love to complain about build systems. Just look at the talks from CppCon17, where developers used the current state of build systems as a punchline. This raises a question: why? Of course, there are countless issues during the build process. But I believe we have … Read more