Hello everyone, welcome to<span>LiXin Embedded</span>. In embedded development, whether it is sensors, memory chips, or GPIO expansion modules, the presence of I2C can be seen everywhere. In this article, we will start from the basic working principles of I2C and delve into common issues and their debugging methods. Why Choose I2C The I2C bus is … Read more
Why is I2C so important? In modern electronic devices, communication between chips is ubiquitous. For example, your device has dozens of sensors and chips that need to “talk” to each other—the accelerometer needs to inform the processor of the device’s motion state, the touchscreen needs to relay user click information, and the camera needs to … Read more
1. Main Registers of MPU6050 1.1 Initialization Registers and Their Settings 1.2 Data Registers 2. Hardware Connections 3. Device Tree Configuration 4. Writing Driver Code 4.1 i2c_mpu6050.h 4.2 mpu6050.c 5. Timing Observations of Initialization Functions in Probe 5.1 Overall Timing 5.2 CLK 5.3 Host Writing One Byte to Slave 5.4 Host Reading One Byte from … Read more
Applications of C Language in Embedded Systems: Hardware Interface Programming Introduction The C language is a widely used programming language, especially significant in embedded system development. Its efficiency and direct control over hardware make C the preferred choice for embedded developers. In this article, we will explore how to use C for hardware interface programming … Read more
C++ Embedded Development: Hardware Interfaces and Real-Time Programming In today’s rapidly evolving technological environment, embedded systems have become a core component of many electronic products. C++, as a powerful programming language, is increasingly favored in the field of embedded development due to its object-oriented features. In this article, we will explore how to use C++ … Read more
Hello everyone, I am Goat. Continuing with some other signal quality issues related to I2C. If you encounter these problems, how can you resolve them? Back Reflection Back reflection poses significant risks to clock-type signals, and since the I2C CLK signal is a clock-type signal, the presence of back reflection can lead to sampling errors. … Read more
Hello everyone, I am Xiao Chen! Today, let’s talk about a particularly useful skill in smart home projects—how to drive an OLED display using a microcontroller via the I2C protocol.Whether it’s a homemade temperature and humidity monitor, a smart door lock, or a household gas detector, a clear display interface can greatly enhance user experience. … Read more
This article provides a detailed introduction to the M5Stack Audio Expansion Module, covering product features, specifications, operation instructions, register descriptions, and the implementation of drivers in the XiaoZhi project based on M5Stack core. 1、Product Introduction (1) Product Features Module Audio is the audio expansion module for M5Stack, based on the ES8388 audio codec solution, equipped … Read more
Main reference materials: Bilibili @ Jiangxie Technology STM32 Beginner Tutorial – 2023 Edition Detailed Explanation with Chinese Subtitles Development materials download link: https://pan.baidu.com/s/1h_UjuQKDX9IpP-U1Effbsw?pwd=dspb Microcontroller kit: STM32F103C8T6 development board microcontroller C6T6 core board experimental board minimum system board kit Introduction to I2C Peripherals • The STM32 integrates hardware I2C transceiver circuits, which can automatically execute clock … Read more
In the complex world of electronic circuits, various circuit module devices need to communicate with each other to work together. The I2C interface acts as a communication bridge between these circuit module devices, and today we will delve into it. 1. Starting with a Physical Example The image below shows an I2C module I created. … Read more