Communications and High-Speed Signals with Raspberry Pi

所在平台: Coursera

课程主页: https://www.coursera.org/learn/communications-and-high-speed-signals-with-raspberry-pi

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课程简介

课程名称：使用Raspberry Pi的通信与高速信号 概述：这门课程是该专业化的第二门课程，主要讲解硬件物理层以及项目各元素之间的通信，如何在信号出现故障时进行故障排除，以及如何设计项目以确保其正常工作。 本课程开始时回顾各种常见的信号协议。接着，在第二模块中，以易于理解的方式探讨高频信号的物理特性，帮助学生深入领会电路是如何发送和接收这些信号的。 大纲： 1. **通信协议**：在这一模块中，我们将讨论多种现代通信协议，并指出一些将在后续讨论中引用的特性。这部分主要关注数字信号，但我们鼓励学生将每个信号都视为模拟波形。讨论中将介绍一些知名协议以及新兴的I3C协议（I2C的继任者），最后深入研究一种称为开漏驱动的电路，这种电路在I2C和I3C总线上进行通信，适合用于研究高速信号所受的各种真实影响。 2. **实际信号损失**：在第二模块中，我们将探讨高速信号如何受到实际电路的影响及其导致的畸变对项目的影响。有时我们会使用数学工具，但只是为了帮助发展直观的理解。这是制定第四模块中的五条经验法则的重要部分，这些法则将帮助你在未来的项目中设计和排除故障。 3. **设计高速信号**：这一模块讨论信号变化的时间域，然而，仅仅关注时间域是不够的，我们需要转向频率域。通过介绍频率域的概念，帮助学生深入理解实际电路效应如何扭曲信号并导致通信错误。 4. **五条经验法则**：在前三个模块打下坚实基础后，我们终于来到第四模块，将制定五条经验法则。这些法则是为了解决新开发者（有时甚至是经验丰富的开发者）常遇到的问题而设定的。每节课基于早期模块的信息，提炼出易于记忆的规则，帮助学生在未来的项目中使用。此外，还提供了一页PDF的五条经验法则摘要，以便学生在未来的项目中参考。 一项附注：视频播放速度可以调整为1.5x或2x，以帮助更快理解课程内容。

课程大纲

Name:Communications Protocols

Description:In this first module, we will discuss a variety of modern communications protocols and point out features that we will refer back to in later discussions. These are digital signals, but if you think digital communications is all 1's and 0's, I'd like you to change your thinking and start thinking of every signal as an analog waveform. We'll discuss what that means and why it's important when building projects with high-performance communications links. We'll introduce some well-known protocols and also the emergning I3C protocol, the successor to I2C. Lastly, we'll take an in-depth look at a type of circuit called an open-drain driver. This is how an IC communicates on an I2C (and I3C) bus and is a great example circuit for studying all sorts of real-world effects on high-speed signals. We'll use this open-drain configuration as an example throughout the entire course. You may have seen some of this information before but it's worth briefly seeing again as this is the foundation that we'll be referring back to throughout the whole course. And it's worth building a strong foundation now, because Module 4 wraps up everything we've learned into five very useful rules of thumb that you can you in all of your future projects. One more thing. I know I speak slowly, so feel free to use the Coursera video player feature to play the videos at 1.5x or 2x speed.

Name:Real-World Signal Impairements

Description:In Module two, we look into the physics of how high-speed signals are effected by real-world circuits and how that distortion effects our projects. We'll use math at times, but only to help develop an intuitive understanding. This is a critical part of developing the five Rules of Thumb in module 4. These valuable rules will help you troubleshoot and design circuits with high-speed signals in all sorts of future projects.

Name:Designing for High-Speed Signals

Description:Everything we've discussed has considered signals to be voltages that change in time. Picturing signals strictly in the time domain is only half the story, so get ready to shift your mind into the frequency domain. This module introduces frequency-domain concepts and how we can use the frequency domain to deeply understand how real-world circuit effects distort signals and can cause communications errors in our projects. At the end of this module is two extra videos on decibels and filter terminology. Feel free to skip them if you're very familiar with the topic, or feel free to watch them out of order if you need a little more background in those topics to understand the ideas here in module 3.

Name:Five Rules of Thumb

Description:After laying down a strong foundation in modules 1, 2, 3, we've finaly made it to module 4 and it's time to develop our five Rules of Thumb. These concepts were chosen for the rules of thumb in this module becuase they are extremely common trouble spots for new developers (and sometimes experienced developers, too). Each lesson builds on information in the earlier modules and distills a concept to an easy-to-remember rule that you can use on your future projects. Also included in teh resources is a handy one-page PDF summary of the five Rules of Thumb for you keep close by when you're working on your projects in the future.

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