CircuitPython Pin Finder: microcontroller.pin to board mappings

code.py

# SPDX-FileCopyrightText: 2020 anecdata
#
# SPDX-License-Identifier: MIT

import microcontroller
import board

for pin in dir(microcontroller.pin):
    if isinstance(getattr(microcontroller.pin, pin), microcontroller.Pin):
        print("".join(("microcontroller.pin.", pin, "\t")), end=" ")
        for alias in dir(board):
            if getattr(board, alias) is getattr(microcontroller.pin, pin):
                print("".join(("", "board.", alias)), end=" ")
    print()

board-only version:
https://gist.github.com/Neradoc/9ae8e456f0df15a3704eec72e7fa146c

CircuitPython Essentials version:
https://learn.adafruit.com/circuitpython-essentials/circuitpython-pins-and-modules#what-are-all-the-available-names-3082670-14
https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/CircuitPython_Essentials/Pin_Map_Script/code.py

Check GPIO capabilities:

import traceback
import microcontroller
import board
import digitalio
import analogio

for pin in dir(microcontroller.pin):
    if isinstance(getattr(microcontroller.pin, pin), microcontroller.Pin):

        print("".join(("microcontroller.pin.", pin, " -->")), end=" ")
        for alias in dir(board):
            if getattr(board, alias) is getattr(microcontroller.pin, pin):
                print("".join(("", "board.", alias)), end=" ")
        print()

        try:
            print("DigitalIn:", end=" ")
            with digitalio.DigitalInOut(getattr(microcontroller.pin, pin)) as digital_in:
                digital_in.direction = digitalio.Direction.INPUT
                # digital_in.pull = digitalio.Pull.UP
                # digital_in.pull = digitalio.Pull.DOWN
                print(digital_in.value)
        except Exception as e:
            print(pin)
            traceback.print_exception(e, e, e.__traceback__)

        try:
            print("DigitalOut:", end=" ")
            with digitalio.DigitalInOut(getattr(microcontroller.pin, pin)) as digital_out:
                digital_out.direction = digitalio.Direction.OUTPUT
                print(digital_out.value)
        except Exception as e:
            print(pin)
            traceback.print_exception(e, e, e.__traceback__)

        try:
            print("AnalogIn:", end=" ")
            with analogio.AnalogIn(getattr(microcontroller.pin, pin)) as analog_in:
                print(analog_in.value)
        except Exception as e:
            print(pin)
            traceback.print_exception(e, e, e.__traceback__)

        try:
            print("AnalogOut:", end=" ")
            with analogio.AnalogOut(getattr(microcontroller.pin, pin)) as analog_out:
                analog_out.value = 16384
                print("success")
        except Exception as e:
            print(pin)
            traceback.print_exception(e, e, e.__traceback__)

Pico W:

# SPDX-FileCopyrightText: 2023 anecdata
#
# SPDX-License-Identifier: MIT

import microcontroller
import board

try:
    import cyw43  # Pico W
except ImportError:
    cyw43 = None

for pin in dir(microcontroller.pin):
    if isinstance(getattr(microcontroller.pin, pin), microcontroller.Pin) or \
       (cyw43 and isinstance(getattr(microcontroller.pin, pin), cyw43.CywPin)):
        print("".join(("microcontroller.pin.", pin, "\t")), end=" ")
        for alias in dir(board):
            if (getattr(board, alias) is getattr(microcontroller.pin, pin)):
                print("".join(("", "board.", alias)), end=" ")
    print()