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AVR basics: SPI on the ATMEGA
- When it comes to device communication, there are multiple options such as UARTs, I2C, and SPI.
- SPI is a communication protocol that involves a Controller-Peripheral relationship.
- SPI uses four signals - data out, data in, select, and clock - for communication.
- In 2020, new terms were proposed for SPI signals, including Serial Data Out (SDO) and Serial Data In (SDI).
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