The SPI protocol is a commonly used high-speed, full-duplex, synchronous serial communication protocol, widely used for data exchange with sensors (such as temperature sensors, pressure sensors, etc.), data storage and retrieval from storage devices (such as EEPROM, FLASH memory), control of display modules (such as LCD screens, OLED screens, etc.), communication with wireless communication modules … Read more
SPI (Serial Peripheral Interface) is a synchronous serial communication protocol widely used in embedded systems and peripheral communication. SPI follows a one-master, multiple-slave communication method. Based on its operating modes and extended functionalities, SPI can be categorized into the following types based on hardware connection methods: 1. Standard SPI, commonly referred to as SPI, it … Read more
Formatting | Last BugThe main content shared today is derived from ADI’s SPI knowledge study. SPI is one of the most commonly used communication methods in embedded development. However, most embedded software engineers often focus more on upper-layer software development and tend to overlook some underlying signal formats. When communication issues arise, it can be … Read more
1. Introduction to Serial Peripheral Interface (SPI)The SPI interface (Serial Peripheral Interface) is a widely used high-speed, full-duplex, synchronous serial communication protocol between microcontrollers and peripheral devices.2. Main Features of SPIIt supports master-slave operation in both full-duplex and half-duplex modes; 16-bit width with independent transmit and receive buffers;8-bit or 16-bit data frame formats;Data bit order … Read more
“A detailed explanation of the Serial Peripheral Interface and its communication applications with memory, displays, Wi-Fi modules, and SD cards.” In a previous article, I explored the astonishing convenience of interfacing modern OLED displays with bare-metal microcontrollers. My point is simple: in most embedded applications, using a complete Linux SoC platform (like Raspberry Pi) is … Read more
I2C, as the most convenient and simplest onboard communication method, has certain scenarios where it is not suitable, and there are timing considerations to be aware of. Hardware Interface • Simple hardware interface with only two wires • SCL (Serial Clock) / SDA (Serial Data) • Low communication speed and low communication requirements • Fast: … Read more
Embedded Development in C: I2C Communication Protocol Introduction I2C (Inter-Integrated Circuit) is a widely used serial communication protocol, commonly utilized for communication between microcontrollers and various peripherals. It was developed by Philips in the early 1980s, primarily for short-distance, low-speed data transmission. I2C offers advantages such as simplicity, flexibility, and multi-master support, making it well-suited … Read more
In the Armbian system, mounting disks is a common operation, but traditional mounting methods (such as directly modifying /etc/fstab) carry certain risks. If a disk fails to mount properly, it may lead to system failure or even damage. To avoid this situation, this article will introduce a safer and more stable mounting method: using UUID … Read more
▼Click the card below to follow our public account ▼ Today, embedded systems are increasingly applied in various fields such as smart homes, smart healthcare, industrial automation, and intelligent transportation. In the process of embedded system development, data structures are an essential knowledge point. This article will introduce several common data structures in embedded programming, … Read more
Many students who are new to microcontrollers often ask me:“Teacher, is C language only used to light up LEDs and control motors? Does learning it mean I can only do microcontroller development? Isn’t that too limiting?”In fact, C language is not such a “limited” language; it has already permeated every aspect of our digital lives. … Read more