Tutorials

Tutorial of R2P2

1-1 Getting start with R2P2

• Download the latest R2P2-*.uf2 from the releases page of the repository
• Drag and drop it into the RPI-RP2 drive
• Open a proper port in your terminal emulator. See also terminal-emulator

1-2 R2P2 shell has some UNIX-like commands

• Try some UNIX-like commands like ls, mkdir and touch

1-3 R2P2 has PicoIRB

• Open PicoIRB with irb command

2-1 LED blinking (L-chika) with PicoRuby

• Turn on the on-board LED using PicoIRB
• Note: If you use “Pico W” or “Pico 2 W”, use led = CYW43::GPIO.new(CYW43::GPIO::LED_PIN).CYW43 must be initialized with CYW43.init in advance

2-2 require "adc" loads ADC class

• You can load pre-built libraries like “picoruby-adc” and use ADC class

3-1 PicoIRB has multi-line editor!

• That’s cool, right?

3-2 PicoRuby has Time class working with RTC in MCU

• The clock will be persistent if you connect a battery-driven RTC module. Try it :)

3-3 You can even use a Vim-like editor in R2P2

• It’s not for a serious usage but for demonstrating the viability of PicoRuby ;)

3-4 You can drag and drop your Ruby script from your laptop

NOTE: From PicoRuby version 3.4, this feature is no longer available. Use PicoRuby Web Terminal described in terminal-emulator instead.

• This is what you want to do in a real development

3-5 /home/app.rb automatically starts Pi Pico

• Now your Pi Pico is a stand-alone device