Where I describe how to edit, assemble, link, and UF2 Mecrisp-Stellaris for the RP2040 and specifically, the Adafruit Feather RP2040 and Pico/Pico W.

Sources#

• Inspiration - Piotr’s Comment
• Mecrisp Patching UserDocs

Updated#

Now that I have gone …

Where I work with the Adafruit Feather RP2040 (Feather), Mecrisp-Stellaris Forth (MSForth) and create Forth versions of ManPinTest and PinTest.

Sources#

• Adafruit Feather RP2040
• Raspberry Pi RP2040 Getting Started
• RP2040 Datasheet
• Arm: Raspberry Pi RP2040: …

Where I compile interesting notes as to how Mecrisp-Stellaris Forth is implemented on the RP2040 microcontroller.

ALWAYS WRITE SHORT DEFINITIONS!!#

I was working on this entry and was attempting to hand-write the definition of PIN_BLINK by keeping the …

Where I implement Forth on the Feather RP2040 using Mecrisp-Stellaris Forth.

Sources#

• Mecrisp Forth
• Mecrisp Forth Glossary
• Mecrisp Forth Dictionary
• Mecrisp Downloads
• Mecrisp-Stellaris Unofficial User Documentation
• Mecrisp General Discussion
• Pi Pico Memory …

Where I compare the Labrador with the $300 Digilent Analog Discovery 2 and determine if using a “rail-to-rail” operational amplifier matters.

Sources#

• LM358 Datasheet
• OP484 Datasheet
• Analog Devices Op Amp Inputs, Outputs, Single-Supply, and …

Where I explain my process for developing code on the RP2040 board.

Sources#

• MicroPython
• CircuitPython

Python User (Discussion below)#

• Sublime Text or your favorite code editor
• macOS Serial

Background#

When developing software for microcontrollers, the …

Where I use the Labrador to test a different way of implementing Blink on the RP2040 using timer().

Sources#

• Raspberry Pi Pico Python SDK

Background#

I started reading the Python SDK above and noticed this example on page 12.

Its a method of blinking the …

Where I begin to work with the Adafruit Feather RP2040 (Feather) and MicroPython (uP) and use the Labrador to test the board.

Using Blink Test to Confirm Board Works#

Using an Interactive Pin Test to Confirm Header Works# …

A short entry to explain how to code using MicroPython on the ESP32.

Background#

In my introduction to Micropython, I mentioned how I wrote MicroPython for the ESP32 on a Mac. As I stated, Phillip van Allen has a nice process, however I like my process …

Where I continue to use the Labrador to test the PWM functionality of the ESP32.

Sources#

• Makeability Lab Lesson 3: Fading an LED with PWM
• ESP32-GetStarted: PWM
• MicroPython PWM
• Espressif: LED Control

Background#

We continue to use the Labrador to …