With an SPI connection there is always one master device (usually a microcontroller) which controls the peripheral devices. ![]() It can also be used for communication between two microcontrollers. Serial Peripheral Interface (SPI) is a synchronous serial data protocol used by microcontrollers for communicating with one or more peripheral devices quickly over short distances. This library allows you to communicate with SPI devices, with the Arduino as the master device.Ī Brief Introduction to the Serial Peripheral Interface (SPI) ![]() ![]() Reference Language | Libraries | Comparison | Changes
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