Methods for Testing the CAN Bus① Before checking the data bus system, ensure that all electronic control units (ECUs) connected to the data bus are free of functional faults. A functional fault refers to a failure that does not directly affect the data bus system but impacts the functional flow of a specific system. For … Read more
Author: nao0 Editor: Chen Jiajiao On June 14-15, 2025, CanJam will be held again in Shanghai, attracting nearly a hundred exhibiting brands, including many international giants and numerous emerging domestic brands. From entry-level affordable headphones to HiFi audio systems, the range covers various categories such as HiFi over-ear headphones, in-ear monitoring headphones, personal audio players, … Read more
1 Introduction In a formal project, I encountered a problem during serial communication where a sequence of data was unexpectedly interrupted by a 00. The data received from the hardware FIFO was correct, but the data received at the upper layer was abnormal. This issue might be obvious to someone with experience, but for those … Read more
🎀 Article Author: Ertu Electronics 🌸 Follow our public account for more resources! 🐸 Looking forward to learning and exchanging ideas together! 1. Introduction to SPI SPI stands for Serial Peripheral Interface, which is a high-speed, full-duplex, synchronous communication bus. It only occupies four pins on the chip, saving pin space while providing…
SPI (Serial Peripheral Interface) is one of the most widely used interfaces between microcontrollers and peripheral ICs (such as sensors, ADCs, DACs, shift registers, SRAM, etc.). SPI is a synchronous, serial interface. Data from the master or slave is synchronized on the rising or falling edge of the clock. A common 4-wire interface is shown … Read more
A common misconception is that pull-up resistors are always required on SPI bus lines. I want to make it clear that pull-up resistors are not always necessary for the basic function of sending and receiving digital data on the SPI bus. The buffers in the SPI interface use a push-pull topology, which involves high-side and … Read more
Today, we will introduce the widely used SPI communication between PCB boards, striving to minimize the introduction of overly textual definitions and instead use straightforward language to explain. Definition: SPI (Serial Peripheral Interface) is a type of serial synchronous communication, which is mostly full-duplex (but it can also be half-duplex), primarily used in chips such … Read more
ArticleOverview In this article, DigiKey introduces how ST’s X-NUCLEO-IKS4A1 expansion board connects various sensors through the standard I²C bus and hierarchical bus architecture, facilitating the development of complex IoT applications. How does STMicroelectronics’ X-NUCLEO-IKS4A1 expansion board connect various sensors via I2C? STMicroelectronics has launched the expansion board X-NUCLEO-IKS4A1, which is a motion MEMS and environmental … Read more
1. Introduction: When the “Two Wires” Suddenly “Stop Working“ In the daily work of embedded engineers, the I2C bus, with its two-wire communication feature, is a prime example of “minimalist aesthetics“. However, this seemingly simple two-wire system can suddenly fall into a “deadlock“—the clock line (SCL) stubbornly remains high, while the data line (SDA) is … Read more
▼For more exciting recommendations, please follow us ▼In daily life, we often encounter situations where devices lose power, such as mobile phones, smart wristbands, and computers; however, the stored information does not get lost, such as phone numbers, text messages, notes, WeChat, QQ messages, etc., which are all preserved. These items only disappear after a … Read more