Follow+Star Public Account, don’t miss exciting content Author | strongerHuang WeChat Official Account | Embedded Column This article mainly describes the basic knowledge of communication interfaces such as UART, I²C, SPI, CAN, and USB for beginners. 1Overview Why talk about serial communication? Because parallel communication is relatively rare now, it’s basically all serial communication.Today, I … Read more
Hello everyone, I am Da Yi! Today we will talk about a very practical topic: UART-485 communication. This technology allows microcontrollers and PLCs to communicate wirelessly, just like two people conveniently chatting via video call on their phones. Have you ever wondered how mobile phones achieve wireless communication? Let’s start with an example from our … Read more
1. UART: The Lightness of Qiu Qianzhang’s Skills In “The Legend of the Condor Heroes”, Qiu Qianzhang says, “UART is like my lightness skill, floating over the water to cross the river.” To cross the river (communication), one must prepare in advance, setting markers at fixed intervals (baud rate predetermined). If the steps are too … Read more
Click the blue text Follow us 1. Clock Synchronization Issues in Serial Data Sending serial data (such as USB, UART, I2C, SPI, etc.) is done over a single data bus. If a continuous stream of 01 signals is sent to the receiving device over this bus, the difference in clock frequencies between the sender and … Read more
Communication between electronic devices is like communication between humans, as both parties need to speak the same language. In electronic products, these languages are called communication protocols. Previously, I shared separate articles on SPI, UART, and I2C communication; this article compares them. Serial vs Parallel Electronic devices communicate by sending data bits. A bit is … Read more
1. Qiu Qianzhang’s Lightness Skill: UART In “The Legend of the Condor Heroes”, Qiu Qianzhang says, “UART is like my lightness skill, gliding over the water to cross the river.” To cross the river (communication), one must set up hidden stakes in advance, and while moving, the steps must be fixed according to the distance … Read more
The Seven Deadly Sins, seven sins in Catholicism, abbreviated as the Seven Deadly Sins. The term ‘sin’ refers to the source or root of something. In Catholic doctrine, it is stated that “according to John Chrysostom and Pope Gregory I, we can discern the major evils that believers often encounter.” Here, ‘major’ means that these … Read more
▲ For more exciting content, please click on the blue text above to follow us! Communication Methods Between Devices Generally, communication methods between devices can be divided into parallel communication and serial communication. The differences between parallel and serial communication are shown in the table below. Classification of Serial Communication 1. According to the direction … Read more
1.1 The J-Link indicator light is off, and the USB cannot recognize the CPU Solution: First, confirm whether the USB port of the computer connected to the emulator is functioning properly and can recognize USB devices. We can test it with other devices like USB flash drives or mice, or try a different USB port … Read more
The first step is to look at embedded issues from the perspective of PC programming; the second step is to learn to use embedded programming concepts; the third step is to combine PC and embedded thinking and apply it to actual projects. Many friends transition from PC programming to embedded programming. In China, few embedded … Read more