Chapter 2. API Reference
2.2.17 SPI Slave Driver
SPI Slave driver is a program that controls ESP32-S2’s SPI peripherals while they function as slaves.
Overview of ESP32-S2’s SPI peripherals
ESP32-S2 integrates two general purpose SPI controllers which can be used as slave nodes driven by an off-chip SPI
master
SPI2 and SPI3 have independent signal buses with the same respective names.
Terminology
The terms used in relation to the SPI slave driver are given in the table below.
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