The “Marriage” of Embedded Systems and Communication Protocols In today’s wave of digitalization, embedded systems are like a magical “behind-the-scenes hero,” quietly penetrating every aspect of our lives. When you drive a car, the embedded system in the engine control system accurately adjusts fuel injection and ignition timing, ensuring efficient and stable power output; the … Read more
For more information about meetings and live classes, please inquire via WeChat “NewCarRen”. Abstract In recent years, the integration of advanced technologies in electric vehicles (EVs) has been increasing, making it crucial to assess the risks associated with the deployed technologies. Functional safety is necessary for automobiles to ensure human life safety. The Battery Management … Read more
Recently, I was debugging an OLED display, and I just couldn’t get it to communicate correctly, which was very frustrating. So, I casually searched on eBay for a logic analyzer, planning to buy a cheap one to use. The most common item on eBay was this one: 8 channels, 24MHz maximum sampling rate, priced around … Read more
A logic analyzer is an instrument used to simultaneously capture, display, and measure multiple electronic signals in digital circuits. Logic analyzers can show the relationships and timing between many different signals in digital systems and are often capable of analyzing digital communication protocols such as I2C, SPI, and serial. Therefore, logic analyzers are the best … Read more
SPIDriver is an easy-to-use tool for controlling SPI devices, compatible with Windows, Mac, and Linux systems. It features a built-in color screen that can display all SPI communications in real-time, using a standard FTDI USB serial chip to communicate with the PC, eliminating the need for special drivers. The SPIDriver evaluation board includes 3.3 V … Read more
Previously, I used the RT1052 development board, but now STM32 is obviously more popular among everyone. Therefore, I am providing this C file for everyone to benefit from the driver I wrote earlier. #include "bsp_lpspi.h" SPI_HandleTypeDef SpiHandle; void Spi_delay(uint32_t count){ volatile uint32_t i = 0; for (i = 0; i < count; ++i) { __asm("NOP"); … Read more
In 2010, the Berkeley research team aimed to design a CPU. However, Intel’s licensing for x86 was very strict, ARM’s instruction set licensing was expensive, and MIPS, SPARC, and Open Power also required their respective company licenses. With limited options, the Berkeley research team decided to start from scratch to design a new instruction set. … Read more
Before discussing buses, we should first understand what a bus is. According to the complete definition from Baidu: A bus is a common communication line for transmitting information between various functional components of a computer. It is a transmission line composed of wires, categorized according to the type of information transmitted by the computer. In … Read more
1. Design Overview This design implements a multi-channel UART/SPI communication system, capable of one-to-many communication. The system can operate in UART mode or SPI mode. The reason I chose this topic is mainly that my current laboratory needs to write a fast communication system based on UART. This topic can help solidify my previously learned … Read more
UART, SPI, and I2C are common serial communication methods in embedded development. The underlying communication principles are not difficult, but many beginners struggle to learn them. Today, I will share some common low-level data transmission principles of these communication protocols. 1 UART Serial Communication UART: Universal Asynchronous Receiver/Transmitter. The UART interface is the most commonly … Read more