Raspberry Pi Pico 2W Learning Journey

This repository documents my learning process with the Raspberry Pi Pico 2W, covering basic LED control, button input, and PWM/ADC features.

Project Structure / 项目结构

• 01_blink: The classic "Hello World" of embedded systems. Blinks the on-board LED.
  • 01_点灯基础：控制开发板自带的 LED 闪烁。
• 02_external_led: Controlling an external LED connected via a breadboard (GP16).
  • 02_外接 LED：通过面包板控制外接引脚 (GP16) 的 LED。
• 03_button_led_toggle: Controlling an LED with a physical button using toggle logic.
  • 03_按键开关：使用物理按键控制 LED 的亮灭，实现“按一下开，按一下关”的逻辑。
• 04_pot_breathe: Controlling a breathing LED's frequency with a potentiometer (ADC + PWM). Integrated with a button switch.
  • 04_电位器呼吸灯：使用电位器调节呼吸灯的闪烁频率，并集成按键开关功能。

Hardware Setup / 硬件连接

03_button_led_toggle

• LED: Positive to GP16, Negative to GND via a resistor.
• Button Module:
  • S (Signal) to GP14
  • Middle (VCC) to 3.3V (Pin 36)
  • - (GND) to GND

04_pot_breathe

• LED: Positive to GP16, Negative to GND via a resistor.
• Potentiometer:
  • Center (Signal) to GP26 (ADC0)
  • Right (VCC) to 3.3V (Pin 36)
  • Left (GND) to GND
• Button Module: Same as above (for toggle control).

Environment / 环境要求

• Raspberry Pi Pico SDK 2.2.0
• VS Code with Raspberry Pi Pico Extension
• CMake & Ninja

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Raspberry Pi Pico 2W 学习笔记

本仓库记录了我学习 Raspberry Pi Pico 2W 的过程，涵盖了基础 GPIO 输出、输入以及更高级的 PWM/ADC 功能。