1. Orange Pi Zero Development Board 2. Checking Available Space on Orange Pi Zero System Using the Orange Pi image: OrangePi_zerolts_ubuntu_xenial_server_linux3.4.113_v2.0.7.img After booting the system, it shows that the root filesystem (rootfs) is only 1GB, and the available space is only 292MB. Checking disk usage: 3. Expanding /dev/mmcblk0p2 Key Points: (1) The starting sector for … Read more
1. Introduction to WiFi Modes The ESP32 has two main WiFi modes: STA and AP modes. AP mode refers to Access Point mode, which can be connected by other devices; STA mode refers to Station mode, which can connect to hotspots. The ESP32S3 supports the coexistence of both STA and AP modes, for example, a … Read more
Click the blue text to follow us Follow and star our public account for exciting content delivered daily. Source: Online materials The Xilinx 7 series chips are widely used, characterized by low cost, strong performance, and mature stability. Currently, Xilinx (AMD) has extended the lifecycle of this series of chips at least until 2035. This … Read more
Capacitive Touch Capacitive touch technology is widely used in traditional household appliances, smart locks for buildings, industrial panels, as well as emerging fields such as the Internet of Things, artificial intelligence, and electric vehicles. Renesas Electronics has accumulated rich experience and unique technology in capacitive touch technology, forming a diverse product lineup. Renesas combines the … Read more
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As we begin to explore the vast world of operating systems, the name “Linux” repeatedly comes up. Faced with hundreds of different “versions” (which we call distributions), many students feel confused: which one should I start with? Don’t worry, this article will clear up the fog for you. My core advice is very clear: For … Read more
The three core protocols in Bluetooth Low Energy (BLE) are GAP, ATT, and GATT. They work together to define how BLE devices are discovered, connected, and communicate. In simple terms: GAP: Responsible for who is where. It handles device visibility, broadcasting, and connection establishment. ATT: Responsible for how to read/write. It defines the underlying mechanisms … Read more
1. Introduction The core idea of the factory pattern is to:separate the creation and use of objects. Just like when you go to a store to buy something, you don’t need to worry about how the product is made; you just need to tell the clerk what you need. Since this is a factory pattern, … Read more
In the advanced applications of the C language, especially in the field of embedded development, “memory” is often the most precious resource. When we need to handle hardware registers, binary protocols, or massive data storage, ordinary variables occupying 1 byte or 4 bytes can easily lead to resource wastage. Bit-fields (Bit-Field) act like a “space … Read more
In embedded development, bare-metal and RTOS programming are two core implementation methods. This article focuses on the STM32F4xx series MCUs, first explaining the concepts and applicable scenarios of both, and then comparing the code implementation differences between bare-metal and FreeRTOS through three examples: multi-LED blinking, sensor data processing, and button-controlled motor. Finally, it provides selection … Read more