GPIO 是指单片机（微控制器）主板上的一组引脚，这些引脚可以发送或接收电信号，但它们不是为任何特定目的而设计的，这就是为什么它们被称为“通用”IO。

适用于ESP32和ESP8266板、树莓派Pico的外壳3D模型

RP2040 Datasheet

In this book, we’ll look at how to get started with this hardware, and how to work with other electronic components. By the end of the book, you’ll know how to create your own programmable electronic contraptions.

The SDK (Software Development Kit) provides the headers, libraries and build system necessary to write programs for RP2040-based devices such as Raspberry Pi Pico in C, C++ or Arm assembly language.

This book is about the official MicroPython port for RP2040-based microcontroller boards.