Abstract:

This video introduces the Luckfox Pico 2, an affordable and readily available alternative to the Raspberry Pi Pico 2, featuring the RP2350 microcontroller with both ARM Cortex and RISC-V cores. The presenter demonstrates three primary methods—C code, MicroPython, and Arduino—along with a bonus method using VS Code, to program the board. The practical application involves controlling WS2812 RGB LED rings, highlighting the Pico 2's immutable bootloader, ease of flashing via drag-and-drop UF2 files, and the use of its unique Programmable Input/Output (PIO) state machines for efficient peripheral control. The video emphasizes the platform's accessibility for beginners and its versatility for various development preferences.

Getting Started with Luckfox Pico 2: A Comprehensive Guide to Programming Approaches

• 0:06 Introduction to Luckfox Pico 2: The video focuses on the Luckfox Pico 2, an entry-level development board featuring the RP2350 chip, presented as a cost-effective and available alternative to the Raspberry Pi Pico 2.
• 0:31 Giveaway: Two Luckfox Pico 2 boards are offered for free to viewers who purchase another item from the presenter's store, paying only for shipping.
• 0:40 Programming Methods Overview: The video outlines three main programming approaches: C code, Arduino, and Python (specifically MicroPython), also touching on VS Code integration.
• 0:49 Sponsor Shout-out (PCBWay): The video is sponsored by PCBWay, highlighting their PCB manufacturing, CNC machining, 3D printing, and component module store services, offering a $5 discount for first-time orders.
• 2:35 Luckfox Pico 2 Features: The board is highlighted for its broad General Purpose Input/Output (GPIO) capabilities, inclusion of both ARM Cortex and RISC-V cores (though only one can be used at a time), and built-in PIO (Programmable Input/Output) state machines for efficient peripheral control without CPU cycles.
• 3:05 Hardware Setup: The demonstration involves soldering pins to the Pico 2 and connecting it to a 16-LED WS2812 RGB LED ring, powered via the USB-C's V-Bus.
• 3:51 Immutable Bootloader & Flashing: A key feature is the Pico 2's immutable bootloader, which prevents bricking. Programs are flashed by holding the boot select button, plugging in, and then simply dragging and dropping a compiled .uf2 binary file onto the device, which appears as a mass storage device.
• 5:56 C Code Development:
  • Requires Pico SDK tools and SDK, along with cmake, GCC ARM none EABI, and build essential.
  • Compilation is shown via a custom buildcommands.sh script, generating .uf2 files.
  • The code utilizes the PIO for efficient WS2812 control, offloading CPU tasks.
  • The C example demonstrates architecture-dependent behavior, changing LED rotation direction based on whether it's compiled for ARM or RISC-V.
• 13:54 MicroPython Development with Thonny:
  • First, a MicroPython .uf2 file is flashed to the board.
  • Thonny IDE is used for interactive Python programming directly on the board.
  • Code can be saved as main.py onto the Pico 2, allowing it to run automatically on reset.
• 19:07 Arduino Development:
  • Requires installing the RP2350 board package in Arduino IDE's Boards Manager and the FastLED library.
  • Offers a simplified C-like coding environment.
  • Initial flash requires manual boot mode, but subsequent flashes can be done directly from the IDE.
• 23:20 VS Code Development:
  • Demonstrates setting up a new Pico project using the Raspberry Pi Pico VS Code extension.
  • The extension handles toolchain installation and project configuration.
  • Allows building and flashing C/C++ code, including PIO-based examples, directly from the IDE.
• 27:47 Overall Ease of Use: The video concludes by reiterating that the Luckfox Pico 2 is highly accessible for beginners, offering multiple programming language and IDE options, making it easy to experiment and create projects.
• 29:21 Upcoming Content: The next video will cover the O-Droid C5.