1. What is the basic working principle of the CAN bus? The CAN bus is a multi-master serial communication protocol primarily used in automotive and industrial control. It transmits data through differential signals (CAN_H and CAN_L) and has a high anti-interference capability. The CAN bus employs a non-destructive bit arbitration mechanism to ensure that high-priority … Read more
Click the Blue Text Follow Us Introduction to SPI SPI (Serial Peripheral Interface) is a synchronous serial communication protocol used for data transmission between devices over short distances. It is commonly used for communication between microcontrollers and external devices such as sensors, flash memory, displays, etc. SPI has the following main characteristics: Basic Principles SPI … Read more
1. What Is the Task State Machine Model? The task state machine model describes the lifecycle and state transitions of a task. Typical states include: (1) Ready: The task can execute but is waiting for the scheduler to allocate CPU. (2) Running: The task is currently using the CPU to execute. (3) Blocked: The task … Read more
In today’s booming era of the Internet of Things (IoT), microcontrollers play a crucial role as core control units. Bluetooth technology, with its convenient wireless communication characteristics, has expanded the application space for microcontrollers. The STM32 series microcontrollers are favored by developers for their high performance and low power consumption. 1. Overview of Bluetooth (1) … Read more
Hello everyone, I am Da Yi, and today we are going to talk about the serial communication protocol between microcontrollers (MCU) and PLCs. When it comes to serial communication, many of you might feel confused, but don’t worry, I will clarify everything shortly. What is Serial Communication?Communication is everywhere; for example, the way you and … Read more
The I2C bus is one of the most commonly used communication protocols in embedded systems, serving as a “dedicated highway” between microcontrollers and various sensors and memory devices. Today, let’s discuss how this protocol works and how to use it to read data from temperature and humidity sensors. I2C Protocol Basics The I2C protocol uses … Read more
Click the Blue Word Follow Us UART (Universal Asynchronous Receiver/Transmitter) is a widely used serial communication protocol, typically used for communication between computers and peripherals. It is a general-purpose serial, asynchronous communication bus with two data lines that enable full-duplex transmission and reception. UART is a serial communication protocol that transmits data bytes bit by … Read more
1. What is the Validity of IIC Protocol Data? (1) Data Transmission Format Start and Stop Conditions: When the SCL line is high, a transition from high to low on the SDA line indicates a start condition; when SCL is high, a transition from low to high on the SDA line indicates a stop condition. … Read more
Hello everyone, I am XXX. Today I bring you a detailed analysis of microcontroller communication protocols, including mainstream protocols such as UART, I2C, and SPI. These protocols are the bridge for data exchange between microcontrollers and other devices, and mastering them is crucial for embedded system development. Let’s break them down one by one, and … Read more
The above ☝️☝️☝️ is about a food-related public account, where each recipe has detailed steps and high-definition images, making it easy for kitchen novices to get started. Follow it to unlock more delicious recipes and fill your meals throughout the seasons with surprises! 1. What are the characteristics of SPI communication? SPI communication, or Serial … Read more