Mastering I2C/SPI Communication Protocols

Communication protocols are fundamental skills that are applicable everywhere.

However, very few people can confidently say they fully understand a specific communication protocol. Often, we only use part of the protocol.

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From an engineering practice perspective, I will break down I2C and SPI for everyone.

Introduction:Synchronous communication vs asynchronous communication, full-duplex communication vs half-duplex communication, serial communication vs parallel communication. Why are communication protocols categorized this way, and in what scenarios are different communication protocols used?

Introduction:What are the working speed types of the I2C bus? What are the types of bus addresses? How is data validity defined?

Introduction:What is the arbitration mechanism of the I2C bus? What are I2C write operations and read operations? How is the I2C ultra-fast mode achieved?

Introduction:Understanding the timing diagram of I2C operations is crucial for debugging issues.

Introduction:How should the daisy chain topology be wired? How to choose the size of pull-up resistors? How to use I2C buffer chips? How to optimize I2C clock frequency?

Introduction:How to choose between SPI and I2C? What are the connection topologies for SPI? How to expand SPI – Dual SPI / Quad SPI?

Introduction:Once the WP signal is enabled, write operations cannot be performed?

Introduction:How to troubleshoot SPI communication anomalies??

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