With the development of technology, RS232 serial communication is still widely used in industry. However, in commercial applications, the USB to UART technology has gradually replaced RS232 serial ports. Most laptops no longer have serial ports. So, how can we achieve communication between a microcontroller and a computer? We only need to add a USB … Read more
Serial ports (UART) are a very commonly used interface in embedded systems, but most modern computers lack hardware serial ports. Generally, serial ports are expanded through methods like USB to serial or PCIe bus expansion. USB to serial is a very common solution. Common USB to serial chips include CH340/341, CP2102, and PL2302. However, these … Read more
Source: Official Account — — — Technical Courtyard Introduction: Spreading knowledge and broadening horizons. A technical repository. See the world with a unique perspective, interesting and informative. 【Guide】 Engineers often use a set of lines, configured with appropriate interface circuits, to connect various components and peripheral devices, referred to as a bus, to simplify hardware … Read more
Electronic products, such as computers, mice, chargers, and even cars, have many interfaces around us. This article will introduce you to these interfaces, what they look like, where they are used, how to use them, and their principles. This article serves as a simple description for beginners. 1. Serial Port 2. UART 3. TTL Level … Read more
01 STM32F373 Signal Acquisition and Control 1. Introduction Due to the need to update a circuit board designed based on an old controller chip, this morning we will use the STM32F373 microcontroller to design a signal acquisition and control circuit board. First, we will design and produce it, and then proceed to software debugging. AD\XQWF\2024\CLDesign\Ver2\CLMainF373.PcbDoc … Read more
In STM32 microcontrollers, the microcontroller is equipped with a USB interface, designed to facilitate high-speed data transfer and communication between devices. The USB interface can be divided into two roles: Host and Device. So, how does STM32 control USB? 1. USB Device Function Control Enable USB device functionality: Enable the USB device functionality in CubeMX … Read more
WeChat Search Technical Training Computer ports are interfaces or connection points between a computer and its peripheral devices. Common peripheral devices include mice, keyboards, monitors or display units, printers, speakers, flash drives, etc. The main function of computer ports is to serve as attachment points where peripheral device cables can be plugged in, allowing data … Read more
This article is an excellent article from the Kx forum, author ID: wx_莫克斯 Preparation USB Protocol Specifications l USB UARTl USB HIDl USB Memory The one at the top is the standard serial port implementation, which can connect to MCUs like STM32 or ESP8266 via USB. The middle one can be used for BadUSB (to … Read more
▲ The circuit to be analyzed in this article Many portable electronic devices with built-in lithium batteries, such as mobile phones, typically adopt the following power supply method: 1. When the USB power is not connected, it uses the built-in lithium battery for power. 2. When the USB power is connected, it switches to power … Read more
1. LPC2103 Download (Programming) Methods Programming the FLASH memory of LPC2103 can be achieved through the following three methods: 1) Using the built-in serial JTAG interface 2) Using In-System Programming (ISP) and UART 3) Using In-Application Programming (IAR) functionality In this manual, we will mainly explain the two downloading methods: JTAG interface and ISP + … Read more