Full Duplex

Impact of SPI Communication Modes on DMA Controller Configuration Strategies

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Impact of SPI Communication Modes on DMA Controller Configuration Strategies

@[toc] Impact of SPI Communication Modes on DMA Controller Configuration Strategies Insert image description here 1. Introduction The Serial Peripheral Interface (SPI) is a synchronous, full-duplex serial communication protocol widely used in embedded systems for data exchange between microcontrollers and various peripherals (such as sensors, memory, and display controllers). Although its physical layer is defined … Read more

Understanding SPI: A Comprehensive Guide to Serial Peripheral Interface

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Understanding SPI: A Comprehensive Guide to Serial Peripheral Interface

Editor SPI (Serial Peripheral Interface) is a high-speed full-duplex synchronous serial communication interface developed by Motorola, widely used for communication between microcontrollers and various peripherals (such as Flash, sensors, ADCs, etc.). This article will introduce the working principle of SPI and demonstrate how to use the SPI interface through practical code examples from the STM32 … Read more

Four-Wire, Three-Wire, and Two-Wire SPI Communication

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Four-Wire, Three-Wire, and Two-Wire SPI Communication

Introduction SPI, short for Serial Peripheral Interface, is a high-speed interface technology that supports full-duplex synchronous communication. The communication rate can reach several megabits to tens of megabits. 1. Four-Wire SPI The commonly used SPI typically consists of four lines: SDO/MOSI: Master device data output, slave device data input, such as when the master reads … Read more

Differences Between RS485 2W and RS485 4W Touchscreen Serial Interfaces

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Differences Between RS485 2W and RS485 4W Touchscreen Serial Interfaces

We see that this touchscreen serial interface has RS485 as well as RS232. Here, we will briefly explain and distinguish between the serial interfaces RS485/RS232/RS422. RS232:Is a three-wire communication (1 transmitting wire, 1 receiving wire, and 1 common wire which is the reference ground GND). RS422:Is a four-wire communication (1 for transmitting +, 1 for … Read more