UART (Universal Asynchronous Receiver/Transmitter) is the most common and simplest communication method in the embedded world. Its core idea is: parallel data input → serialized bit stream by frame → the receiver samples and recovers at the same baud rate. It is simple to implement and low in cost, but has limited scalability. This article … Read more
“ The choice of firmware programming methods is crucial throughout the entire lifecycle of embedded products. From development and debugging to mass production and on-site updates, various programming methods have their respective applicable scenarios. This article outlines the circuit design and applications of mainstream methods such as JTAG and SWD, comparing their versatility, advantages, and … Read more
Preparation Work Hardware Confirm the MCU serial port (USART1, UART4, etc.); Confirm the “pins” (TX: transmit pin, RX: receive pin). For example: PA9, PA10; TX connects to RX, RX connects to TX, GND connects to GND; Note: Ensure common ground (GND), which is essential for the signal circuit and level reference. Protocol Format: Ensure that … Read more
Click the blue text Follow us UART (Universal Asynchronous Receiver/Transmitter) The full name of UART is Universal Asynchronous Receiver/Transmitter. UART is an asynchronous transceiver, a key module for asynchronous communication between devices. It handles the serial/parallel and parallel/serial conversion between the data bus and the serial port, and specifies the frame format. As long as … Read more
Dear friends, hello everyone! Today, the topic we are going to learn about is the serial communication protocol of microcontrollers (MCUs). This content is quite important and relatively professional, but I will try to explain it in a simple and understandable way. First, let’s see why we need serial communication? Communication is the Basis of … Read more
In job interviews, the characteristics of communication protocols are a common question. Below is a summary of the basic characteristics of several common communication protocols: Communication Protocol Sync/Async Serial/Parallel Full-Duplex/Half-Duplex/Single-Duplex Main Features I²C (Inter-Integrated Circuit) Sync Serial Half-Duplex Multi-master and multi-slave, uses SDA and SCL lines, supports 7-bit and 10-bit addresses, low speed but suitable … Read more
Hello, I am Daxi Zong. Below is an article I wrote based on your request about the microcontroller serial communication protocol, hoping it will be helpful to you. Comprehensive Analysis of Microcontroller Serial Communication Protocols In the field of embedded systems, achieving communication between devices is a very important aspect. Serial communication protocols are undoubtedly … Read more
Embedded devices need to set parameters during operation, and this task is often implemented by a PC. A communication protocol must be designed for both parties, with three representative protocols as follows: From the table above, it can be seen that the memory and computational performance of general embedded devices are limited, so fixed binary … Read more
Author/Original:Wolong Association Group Member Diandian I2C Timing Stretching Issue! In hardware design, it is inevitable to deal with various interfaces, commonly used ones such as I2C, UART, SPI, and Ethernet. Each type of interface has its own requirements in design, but even the simplest things have their unique aspects. Today, we will discuss the timing … Read more
A few days ago, I saw discussions in the group chat about the issue of “TTL, RS232, and RS485 transmission distances“..Today, I took some time to share related content, hoping it will be helpful to everyone. Overview Many people may not be very familiar with TTL, RS232, and RS485, so let me briefly summarize what … Read more