4-wire SPI

Understanding the SPI Mechanism in Java

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Understanding the SPI Mechanism in Java

The SPI (Service Provider Interface) is a built-in service provider discovery mechanism in JDK.It can find service implementations for a specific interface.Demo: public class TestSpi { public static void main(String[] args) throws InstantiationException, IllegalAccessException { ServiceLoader<SpiInterface> load = ServiceLoader.load(SpiInterface.class); Iterator<SpiInterface> iterator = load.iterator(); if (iterator.hasNext()) { SpiInterface next = iterator.next(); next.spiInterFaceMethod("hello"); } } } Interface: … Read more

Essential Skills for Embedded Development: Capturing SPI Signals with Logic Analyzers

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Essential Skills for Embedded Development: Capturing SPI Signals with Logic Analyzers

Follow【Plain Embedded】to receive exciting updates first Basics of SPI Protocol SPI (Serial Peripheral Interface) is a synchronous serial communication interface developed by Motorola, widely used in embedded systems to connect microcontrollers with various peripherals (such as Flash memory, sensors, display modules, etc.). 1.1 SPI Signal Lines The SPI bus typically includes the following four signal … Read more

STM32 Quick Notes (Sixteen) – SPI Communication

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STM32 Quick Notes (Sixteen) - SPI Communication

🎀 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…

What is SPI Communication? An Introduction to SPI Hardware Design

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What is SPI Communication? An Introduction to SPI Hardware Design

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

Is a Pull-Up Resistor Necessary for SPI Bus?

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Is a Pull-Up Resistor Necessary for SPI Bus?

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

Introduction to Key Points of SPI Hardware Design

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Introduction to Key Points of SPI Hardware Design

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

Microcontroller Serial Interfaces and Communication Technologies

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Microcontroller Serial Interfaces and Communication Technologies

Microcontroller Serial Port Communication Technology The serial interface and communication of microcontrollers are core technologies for data transmission between devices in embedded systems. 1. Basics of Serial Communication 1.Serial vs Parallel Communication Serial communication: Transmits data bit by bit, using fewer pins (14), suitable for long distances and low power consumption scenarios. Parallel communication: Multiple … Read more

Part 2 of Smart Home Project: Using LCD Screens

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Part 2 of Smart Home Project: Using LCD Screens

This image was generated by AI For project use, I won’t discuss the specific principles here. Let’s directly introduce the interface. BL—————-》Backlight pin CS—————-》Chip select pin DC—————-》Command pin RST—————》Reset pin SDA—————》Data pin SCL—————》Clock line VCC—————》Power pin GND—————》Ground pin BL: Backlight pin, there are two common ways to set it, one is to supply power directly … Read more

Industrial Core Tool! How DAC161S997 Achieves High-Precision Current Output?

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Industrial Core Tool! How DAC161S997 Achieves High-Precision Current Output?

This is the 256th content shared by the platform.In process control systems, sensor transmitters collect data such as pressure, temperature, flow, and level, and send this information to a Programmable Logic Controller (PLC) or Distributed Control System. These transmitters rely on 4-20mA signals to send data to the controller. Despite the emergence of standards like … Read more

UT Verification of SPI Function in USI Module of WUJIAN100

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UT Verification of SPI Function in USI Module of WUJIAN100

Recently, I spent some time organizing the verification of the SPI module in the USI module of the WUJIAN100 project. Here, I would like to share some of my thoughts and methods. Basic Introduction to the Design Functionality of the USI Module USI (Unified Serial Interface) is a combined module that includes UART, SPI, and … Read more