Note: Please be aware that there is a resource download method at the end of the article. Please download and save it as soon as possible to avoid deletion! MQTT IoT Platform In the world of the Internet of Things (IoT), the choice of communication protocol is crucial. Today, we will discuss a very popular … Read more
Note: Please be aware that there is a resource download method at the end of the article. Download and save it as soon as possible to avoid deletion! MQTT Protocol 📡 Have you heard of MQTT? If you are interested in the Internet of Things (IoT), it is definitely a topic you cannot avoid! Today, … Read more
Note: Please be aware that there is a resource download method at the end of the article. Download and save it as soon as possible to avoid deletion! MQTT Server 📡 Have you ever wondered how IoT devices “talk” to each other? The answer is—MQTT! Today, we will discuss this amazing protocol and its servers. … Read more
Click on the top “Technical Training” to select “Pinned Public Account” Over 110,000 industrial control professionals follow this WeChat platform: Technical sharing, learning exchange, industrial control videos Recently, many students have been asking about the MODBUS communication of the S7-200 series PLC, so today I will write an article to discuss how to use the … Read more
1. Design Philosophy of Modbus Protocol Modbus devices communicate using a master-slave (client-server) architecture, where only one device (the master/client) can initiate transactions (referred to as queries). Other devices (slave/server) respond by providing requested data or performing operations as requested in the query. Slaves are any peripheral devices (I/O converters, valves, network drives, or other … Read more
The SPI protocol is a commonly used high-speed, full-duplex, synchronous serial communication protocol, widely used for data exchange with sensors (such as temperature sensors, pressure sensors, etc.), data storage and retrieval from storage devices (such as EEPROM, FLASH memory), control of display modules (such as LCD screens, OLED screens, etc.), communication with wireless communication modules … Read more
SPI (Serial Peripheral Interface) is a synchronous serial communication protocol widely used in embedded systems and peripheral communication. SPI follows a one-master, multiple-slave communication method. Based on its operating modes and extended functionalities, SPI can be categorized into the following types based on hardware connection methods: 1. Standard SPI, commonly referred to as SPI, it … Read more
1. SPI Communication Protocol: The High-Speed Dialogue of Electronic Devices SPI (Serial Peripheral Interface) is a commonly used synchronous serial communication protocol between electronic devices. Due to its high speed and full-duplex characteristics, it is widely used for communication with peripherals such as memory and sensors. 1.1 Basic Principles (Four-Wire Interaction) SCK: Clock signal line … Read more
1. Introduction to Serial Peripheral Interface (SPI)The SPI interface (Serial Peripheral Interface) is a widely used high-speed, full-duplex, synchronous serial communication protocol between microcontrollers and peripheral devices.2. Main Features of SPIIt supports master-slave operation in both full-duplex and half-duplex modes; 16-bit width with independent transmit and receive buffers;8-bit or 16-bit data frame formats;Data bit order … Read more
This article summarizes the learning process of STM32 and GD32, and I hope it serves as a reference for you. 1. Characteristics of SPI Communication SPI is a full-duplex, synchronous, serial communication protocol. Full-duplex: Simultaneous data transmission and reception (Half-duplex transmits and receives data in a time-shared manner) Synchronous: All tasks must be completed before … Read more