What is the SPI Protocol and How to Debug SPI Communication?
Summary
Other common devices include home and automotive thermometers, vehicle tire pressure sensors, and video game controllers. They find out that the original design does not work for their application and thus need to add additional slave devices to accomplish the job. Some of the main advantages include: • Less power consumption than I2C • Full duplex communication • Support for multiple slaves • Faster speeds than I2C • Simple implementation and low protocol overhead • Ability to span greater distances than I2C Some of the main draw backs to SPI include: • No flow control or acknowledgement • Requires more signal lines than I2C • Master must control all communication, slaves cannot talk to each other • Board complexity arises when multiple slaves are needed • Higher chance of noise/crosstalk due to the many wires needed When working with SPI it is important to have the right set of tools handy to ensure implementation of designs is done properly. The Aardvark and Cheetah adapters, Beagle analyzers, and Promira platform work on all major operating systems including Windows, Linux, and Mac OS. • Transaction Queuing for Maximum Throughput • Supports up to 3 slave devices Total Phase also offers a protocol analyzer that provides in-depth information for the SPI bus.
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