Programmer Group

1. Introduction to PulseSensor (1) Working principle PulseSensor is a photoelectric reflective analog sensor for pulse and heart rate measurement. Wear it on the finger or earlobe, etc. through wire connection, the collected analog signal can be transmitted to stm32, Arduino and other MCU, and analog-to-digital conversion (voltage acquisition ...

1, I2C bus protocol 1. What is the I2C protocol I2C communication protocol (Inter Integrated Circuit) is developed by Phiilps company. Due to its few pins, simple hardware implementation and strong scalability, it does not need external transceiver equipment of USART, CAN and other communication protocols. Now it is widely used in the com ...

1, Foreword In the process of project development, third-party libraries are often used. The path, header file path, referenced library name, etc. of the third-party library need to be specified in QtCreator project; In addition, you may also need to write a general project to select different libraries for different compiler types and differe ...

DAM Initialization Structure DMA: One request to transmit one data block, supporting the chain transfer function, can achieve one request to transmit more than one data block. A data block is a minimum of 1 data block and can be up to 1024 data blocks, each of which can be configured to be 8, 16, or 32 bits wide. /* DMA Initialize structure: ...

catalogue 1, Foreword (1) Socket socket (2) TCP (3) UDP 2, C # write a simple hello world program on the command line / console (1) C # create console application ​   (2) C # implements window output helloworld (3) C# console program uses UDP socket to send messages (4) C# window program uses TCP socket to send messages 1, Fore ...

1. Preface Previous: https://blog.csdn.net/ylc0919/article/details/111050124 It's been ten months since I said I would send the second generation framework. It's hard to have time to summarize the harvest during this period. After writing the first generation AT queue, I have many ideas. For example, can one AT queue manage multiple AT mod ...

preface On the embedded ARM 64 bit platform, when PyQt5 is installed in pip mode, because there is no compiled whl package of aarch64 in pip source, it is necessary to download the source package of PyQt5 and sip for automatic compilation, which usually fails to compile. Although sudo apt get install python3-PyQt5 can be installed succes ...

Write in front: strongly accuse those who copy and paste other people's blogs but don't know whether it is feasible to practice; I have read countless blogs, experimented with many methods, and summarized the pitfalls: almost all articles are source code compilation, and the compilation methods are similar, but no one has ever written how m ...

Python Web Crawler (1) Getting Started Libraries used: requestspip+BeautifulSoup4pip+tqdmpip+html5lib python version: 3.8 Compilation environment: Jupyter Notebook (Anaconda3) Tour: Chrome Knowledge involved: HTML Hypertext Markup Language , What is a crawl 1. Web Crawler (Web Crawler or Web Spider) It is a program that aut ...

This article was originally published by RT thread forum user @ recan: https://club.rt-thread.org/as...1 problem scenarioI believe many people, like me, have just come into contact with RT thread and are on the way to learn RT thread. However, learning an embedded real-time operating system without a hardware development board, in my previous u ...