Three Basic Types of Communication The commonly used communication can be divided into three categories based on transmission direction: simplex communication, half-duplex communication, and full-duplex communication. Simplex communication allows information to be transmitted only in one direction, while the other party cannot send information back. For example, TV remote controls and radio broadcasts are both … Read more
Hello everyone, I am Da Yi! Today we will talk about a very practical topic: UART-485 communication. This technology allows microcontrollers and PLCs to communicate wirelessly, just like two people conveniently chatting via video call on their phones. Have you ever wondered how mobile phones achieve wireless communication? Let’s start with an example from our … Read more
This is an SPI Flash chip: The pin definitions in its datasheet are as follows: The circuit schematic of this SPI Flash chip: It connects to the SPI interface on the main control chip: The SPI interface is very common, and below I will try to explain what the SPI interface is in simple terms. … Read more
In-Depth Guide to STM32 SPI Master-Slave Communication SPI, as one of the commonly used communication interfaces for microcontrollers, is frequently utilized for high-speed data exchange with various peripherals. This article will take you deep into the STM32 SPI master-slave communication, mastering this practical skill. 1. Basic Concepts of SPI SPI (Serial Peripheral Interface) is a … Read more
👨💻 Technical Sharing by Dayi Unveiling SPI Interface: High-Speed Data Transmission Between MCU and PLC Hello everyone, I am Dayi. Today I am bringing you a high-speed data transmission interface used in microcontrollers and PLCs—SPI. This interface is widely used in embedded systems and automation control, not only for its fast transmission rate but also … Read more
# Click the blue text to follow us and never miss exciting content Origin of SPI The SPI interface was first proposed by Motorola (now NXP) for high-speed data transfer between processors and peripheral devices. Due to its simplicity, efficiency, and low resource consumption, it quickly gained widespread adoption and became one of the most … Read more
👇Click to follow for daily technical insights!👇 1 Introduction SPI: Serial Peripheral Interface, a serial peripheral interface. SPI was developed by Motorola around 1985 and is a synchronous serial interface suitable for short-distance, device-to-device communication. Since then, this interface has become a de facto standard adopted by many semiconductor manufacturers, especially microcontrollers (MCUs) and microprocessors … Read more
Functionality: Use interrupts to send data, efficiently utilizing the I2C peripheral.First, refer to the manual’s I2C section to understand the basic functions and usage of I2C. Then choose the appropriate operational method based on the functionality you want to implement.Obtaining information about OLED: Search for “0.96 inch OLED screen” on Taobao, where you can find … Read more
Hello everyone, I am Daji Zong, and today I will talk about two commonly used communication buses on microcontrollers: SPI and I2C. As the names suggest, SPI stands for Serial Peripheral Interface, while I2C stands for Inter-Integrated Circuit Bus. Both are common methods for chip-to-chip communication. Introduction to SPI The SPI bus consists of four … Read more
Dear friends, I am Dayi Zong, and today I bring you a practical technology article about the I2C bus. I2C is a simple and widely used serial communication protocol, which can be seen in both microcontroller and PLC fields. So what makes it unique? Let’s start with practical application cases. I2C Bus Introduction I2C stands … Read more