Project Baidu Cloud Source Code Path: https://pan.baidu.com/s/1SG5pf87MnbFOuAzbI5kxDQ?pwd=cjz7 1. Hardware Platform Introduction The hardware platform MCU uses the ESP32-S3 module with 8MB PSRAM and 16MB FLASH; The LCD screen is a 2.0-inch IPS high-definition LCD with a resolution of 240*320; the LCD driver chip is ST7789, connected via SPI to the ESP32-S3; The LCD_CS pin of … Read more
Follow+Star Public Account Number, don’t miss out on exciting contentSource | Renesas Embedded EncyclopediaIn a previous article titled “How to Add Version Information to MCU Projects?” we used absolute addresses: #define VERINFO_ADDR_BASE (0x0800FF00) // Address for storing FLASH const char Software_Ver[] __attribute__((at(VERINFO_ADDR_BASE + 0x00))) = "Software: 1.0.0"; const char Compiler_Date[] __attribute__((at(VERINFO_ADDR_BASE + 0x40))) = "Date: … Read more
In embedded development, delay functions are fundamental operations. However, when faced with microsecond-level precision requirements, the choice between loop delays and timer solutions directly affects system stability. 1. Loop Delay: A Legacy from the Bare-Metal Era Implementation Principle: Consumes CPU cycles through no-operation instructions (such as NOP) or decrement loops. Critical Flaw: Precision fluctuation > … Read more
Follow+Star Public Account Number, don’t miss out on exciting contentAuthor | strongerHuangWeChat Public Account | Embedded ColumnIn our daily lives, many electronic products utilize PWM, such as cars, refrigerators, washing machines, fans, lighting, toys, etc.Perhaps you may not feel its presence, but it is hidden within countless electronic products around us.Here, I will share some … Read more
Hello everyone, I am the Mixed Bag Master. queue.h is a header file in Linux and FreeBSD. FreeBSD: FreeBSD is a UNIX-like operating system. This is a very practical header file because it contains all macro definitions, making it usable not only in Linux/Embedded Linux projects but also conveniently in microcontroller projects. It implements the … Read more
Major companies often prioritize educational background when hiring fresh graduates, especially the first degree; however, during lateral hiring, they relax educational requirements to some extent but place higher demands on experience and skills.For fresh graduates with an ordinary first degree or for those who lack professional experience and wish to change careers, starting with small … Read more
Scan to FollowLearn Embedded Together, learn and grow together Overview 1.1 What is MQTT MQTT (Message Queuing Telemetry Transport) is a lightweight publish/subscribe messaging protocol, developed by Andy Stanford-Clark of IBM and Arlen Nipper of Arcom in 1999, specifically designed for low bandwidth, high latency, or unstable network environments. 1.2 Features Lightweight: The protocol header … Read more
Definition First, let’s look at the definitions of both in the authoritative guide for Cortex-M. 1 Exception Definition According to the authoritative guide for Cortex-M, an exception refers to an event that can alter the normal program flow. When an exception occurs, the processor pauses the currently executing task and executes a dedicated program to … Read more
In embedded system development, properly managing boot auto-start projects can optimize the system startup process, ensuring that critical services and applications load and run on time. This article will provide a detailed introduction to the boot auto-start configuration method based on the System V init service management mechanism in the Linux 5.10.209 system on the … Read more
