GPIO Example
GPIO is one of the most basic and commonly used peripherals, which can be used to control output signals or read input status. Through GPIO, external devices such as LEDs, buttons, relays, etc., can be driven to interact with external hardware. This document summarizes the common GPIO peripheral examples provided by the official ESP-IDF.
For ease of understanding and use, the content of the document is divided into two parts:
General Steps Document: Summarizes the basic usage process of GPIO peripherals (such as initialization, configuration, startup, etc.), providing a unified step description and API reference.
Example Document: Explains the implementation of each example by function, avoids repetition by referencing the general steps document for common parts, and only retains the logic and parameter settings specific to the example.
This layered structure facilitates understanding the relevant basic knowledge and overall process in the general steps document first, and then learning the implementation details of specific functions in the example document, thereby understanding the working principle and program design method of GPIO peripherals more efficiently.