This article systematically organizes the status codes in the HTTP protocol, categorizing and analyzing their meanings and applicable scenarios, which can help developers quickly locate request issues and optimize interaction logic. It also designs a standard based on the combination of HTTP methods and status codes. Detailed Explanation of HTTP Status Codes: Uses and Meanings … Read more
When you enter a URL in your browser to search for information, have you ever noticed whether it starts with “http” or “https”? The difference of an ‘S’ signifies a world of difference in terms of network security. This article delves into the distinctions between HTTP and HTTPS. 1. HTTP HTTP, or HyperText Transfer Protocol, … Read more
IoT Data Platform: Building a Real-Time Monitoring System with MQTT and InfluxDB It was a sultry summer last year when our team took on a large factory’s equipment monitoring project. The outdated system used MySQL to store sensor data collected every 5 minutes, resulting in the database crashing when operations wanted to view real-time trends … Read more
Click the blue text Follow us 1. Core Analysis of MQTT Protocol (1) Essential Characteristics of Lightweight Communication Protocols MQTT (Message Queuing Telemetry Transport) is a “lightweight” communication protocol based on the publish/subscribe model, built on top of the TCP/IP protocol. Its greatest advantage is that it can provide real-time and reliable messaging services for … Read more
What is a subnet mask?A subnet mask is a “translation” of an IP address; it is a 32-bit binary number used for subnet management, primarily to extend the “network ID” in an IP address within multi-segment environments. The two main functions of a subnet mask are: to divide a network into multiple subnets and to … Read more
Click the blue text Follow us ETHERCAT Accessories Product Overview ETHERCAT Accessories are used for the ETHERCAT data acquisition and control system. Dewesoft provides a range of EtherCAT accessories for interconnection, power supply, and synchronization between Dewesoft EtherCAT data acquisition systems. EtherCAT power injectors, synchronization connectors, and repeaters are essential tools for distributed EtherCAT data … Read more
Abstract ❝ This article describes how to use C# to call the NModbus4 library and the System.IO.Ports library to implement Modbus RTU communication functionality【Project address at the end of the article】. Introduction Modbus RTU is a serial communication protocol, where the communication mechanism is a polling mechanism where the master device sequentially queries the slave … Read more
While organizing examples, I found a communication case for the Yu Electric flow meter. The model of the flow meter was not noted, making it impossible to determine its specific model. I can only organize and record this; those who encounter it can refer to it. It seems I need to be more careful in … Read more
Through JTAG Debugging – Introduction to DAP, a DAP consists of a DP and an AP, where the AP serves as a window to access the resources behind it. In JTAG debugging, Halt and Step Execution actually control the resources of the CPU behind the AP.In STM32F4xx, the Cortex-M4 registers are controlled via AHB-AP, allowing … Read more
