Serial Communication

Introduction to Serial Communication Standards RS-232, RS-422, and RS-485

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Introduction to Serial Communication Standards RS-232, RS-422, and RS-485

1Introduction to Serial Ports RS-232, RS-422, and RS-485 are all standards for serial data communication interfaces, initially formulated and published by the Electronic Industries Association (EIA). RS-232 was released in 1962, named EIA-232-E, as an industrial standard to ensure compatibility between products from different manufacturers. RS-422 was developed from RS-232 to address its shortcomings. To … Read more

Basics of Serial Communication and RS-232C Standard

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Basics of Serial Communication and RS-232C Standard

IntroductionSerial port is short for serial port (serial port), also known as serial communication interface or COM interface. Serial communication refers to a communication mode that uses serial communication protocol to transmit data bit by bit over a single signal line. Serial ports are classified according to electrical standards and protocols, including RS-232-C, RS-422, RS485, … Read more

Understanding the Differences Between RS-232, RS-422, and RS-485

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Understanding the Differences Between RS-232, RS-422, and RS-485

Serial communication is one of the most basic communication methods faced by electrical engineers, with RS-232 being the simplest among them.Many beginners often struggle to understand the relationship and differences between UART and RS-232, RS-422, and RS-485. This article will discuss these concepts to help clarify their relationships. If we compare serial communication to traffic, … Read more

Complete Guide to Modbus RTU, ASCII, and TCP

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Complete Guide to Modbus RTU, ASCII, and TCP

01 Terminology Interpretation Checksum:The checksum is derived from the previous data through some algorithm to verify the correctness of that data set.When code is input as data into a computer or other devices, input errors can easily occur. To reduce such input errors, coding experts have invented various checksum methods and set checksums based on … Read more

UART Serial Bus Protocol

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UART Serial Bus Protocol

UART The serial port is asynchronous (does not transmit clock-related data). When two devices communicate using the serial port, they must first agree on a data transmission rate, and the clock frequencies of both devices must be close to this rate. A significant difference in clock frequency on either side will lead to data transmission … Read more

Basic Applications of UART Serial Communication

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Basic Applications of UART Serial Communication

Three Basic Types of Communication The commonly used communication can be divided into three categories based on transmission direction: simplex communication, half-duplex communication, and full-duplex communication. Simplex communication allows information to be transmitted only in one direction, while the other party cannot send information back. For example, TV remote controls and radio broadcasts are both … Read more

Using Oscilloscope to View UART Waveforms

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Using Oscilloscope to View UART Waveforms

If you don’t want to miss my updates, remember to click the top right corner – view public account –set as starred, and send you a little star Source: Breadboard CommunityUART is an asynchronous full-duplex serial communication protocol consisting of two data lines, Tx and Rx. Since there is no reference clock signal, both parties … Read more

I2C Basics (1) – Overview and Data Transmission

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I2C Basics (1) - Overview and Data Transmission

—–This articleIntroduction—– Main content includes: I2C Part One: Overview, Data Validity, Data Transmission, and Timing Follow our WeChat official account:Hardware Learning Notes Reply:Fan Group, to receive materials —– Body —– Like ↓ before reading, develop a habit! 1. Overview I2C (Inter-Integrated Circuit) also known as IIC, is a serial communication protocol developed by Philips (now … Read more

The Power of I2C Bus: Applications of Digital Sensors in Microcontrollers and PLCs

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The Power of I2C Bus: Applications of Digital Sensors in Microcontrollers and PLCs

Dear friends, I am Dayi Zong, and today I bring you a practical technology article about the I2C bus. I2C is a simple and widely used serial communication protocol, which can be seen in both microcontroller and PLC fields. So what makes it unique? Let’s start with practical application cases. I2C Bus Introduction I2C stands … Read more

Understanding the I2C Bus: Key Concepts and Applications

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Understanding the I2C Bus: Key Concepts and Applications

I2C (Inter-Integrated Circuit) communication bus is a key component in embedded system design. Its flexibility and high efficiency make it popular in advanced applications. This article aims to provide an in-depth analysis of the I2C communication bus, including its basic concepts, features, communication protocols, as well as advanced applications and best practices in different scenarios. … Read more