I2C – The Inter-Integrated Circuit Bus

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The I2C bus is very commonly used in the embedded realm. We explain how it works and how to set it up on the Raspberry Pi with an example. I2C Characteristics The Inter-Integrated Circuit Bus is a synchronous serial communication bus. Philips Semiconductors was responsible for the invention in 1982 but the interface quickly gained…

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SPI – The Serial Peripheral Interface

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SPI means Serial Peripheral Interface. With SPI you can exchange data blazingly fast between two devices. And you only need four wires. SPI Characteristics The serial peripheral interface is a synchronous communication interface for short distances. Synchronous means that the data is sent in form of blocks or frames and the the two devices are…

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