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Serial peripheral interface (SPI) is one of the most widely used interfaces between microcontroller and peripheral ICs such as sensors, ADCs, DACs, shift registers, SRAM, and others.
There are two control lines for SPI. The controller, usually a microcontroller or DSP, controls a peripheral select and the serial clock used for data synchronization. An SPI bus can control multiple peripherals
SPI or Serial Peripheral Interface was developed by Motorola in the 1980’s as a standard, low – cost and reliable interface between the Microcontroller (microcontrollers by Motorola in the beginning) and its peripheral ICs.
SPI stands for Serial Peripheral Interface. It is a protocol that is synchronous serial communication. It is used to communicate between the peripheral devices i.e. input and output devices and microcontrollers. It is allowed to transfer high-speed data. It is popular with digital communication applications and embedded systems.
Software in the Public Interest (SPI) is a non-profit corporation registered in the state of New York founded to act as a fiscal sponsor for organizations that develop open source software and hardware.
Check out the Wikipedia page on SPI, which includes lots of good information on SPI and other synchronous interfaces. This page presents a more correct way to set up an SPI network amongst your embedded devices, particularly for use with an Arduino microcontroller.
SPI is a communication protocol used to interface a variety of sensors and modules to microcontrollers. This easy to understand guide will explain how it works.
