The serial port is a commonly used interface in computers, with the most common being the RS-232-C interface. It was established in 1970 by the Electronic Industries Alliance (EIA) in collaboration with Bell Systems, modem manufacturers, and computer terminal manufacturers as a standard for serial communication. Its full name is “serial binary data exchange interface … Read more
The 80C51 microcontroller is a classic 8-bit microcontroller released by Intel many years ago. It is widely used in various embedded systems and integrates multiple functions such as CPU, memory, and I/O interfaces. It can connect and communicate with external devices through specific pins. This article will introduce the pins and functions of the 80C51 … Read more
The operation of the chip mainly involves manipulating the registers within the chip. Each register has its own unique address mapped in memory, which is what we are operating on. To understand the chip, first look at the timing diagram, then understand the corresponding registers, how they operate, define the necessary ports (which the program … Read more
Click the blue text to follow us 0. Introduction: Computer communication is divided into serial communication and parallel communication. Parallel communication: Typically transmits data bytes simultaneously using multiple data lines. Serial communication: Transmits data bytes one bit at a time over a single transmission line. Each has its own advantages and disadvantages: Parallel communication: Simple … Read more
Introduction to Serial Communication Classification Based on Data Transmission Direction Simplex: Data transmission only supports data transfer in one direction. Half-Duplex: Allows data to be transmitted in both directions. However, at any given time, data can only be transmitted in one direction, which is essentially a switched direction simplex communication; it does not require separate … Read more
Click the blue text above: IoT Inn Serial communication plays a very important role in embedded development. It is often used to debug systems, print necessary debugging information, and help us analyze and locate problems. Many common peripherals also support serial protocols, such as WIFI modules, Bluetooth modules, 4G modules, fingerprint modules, PM2.5 sensors, formaldehyde … Read more
Background Knowledge of Communication Interfaces Ways of Communication Between Devices Generally, the 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 of data transmission, it can be divided into: … Read more
Overview With the development of the Internet of Things (IoT), more and more devices need to connect to the cloud. These devices include various instruments, industrial equipment, collection devices, and sensors, most of which use serial ports (RS232, RS485). Therefore, IoT gateways such as serial-to-TCP and serial-to-WiFi can be used to transmit data to the … Read more
Communication Methods Between Devices Generally, the communication methods between devices can be divided into two types: 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 data transmission direction, it can be divided into: Simplex: Data transmission only supports … Read more
The article about the module is about to begin, and I plan to write a series of beginner and intermediate tutorials on modules and STM32 in the future. Generally speaking, manufacturers of the ESP8266 module will periodically upgrade the firmware inside the module and release it, so we must also master the method of upgrading … Read more