Then, connect to the serial console() to see a list of pins printed out. This file runs
only once, so if you do not see anything in the output, press CTRL+D to reload and
run the code again.
# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
# SPDX-License-Identifier: MIT
"""
CircuitPython I2S Pin Combination Identification Script
"""
import board
import audiobusio
from microcontroller import Pin
def is_hardware_i2s(bit_clock, word_select, data):
try:
p = audiobusio.I2SOut(bit_clock, word_select, data)
p.deinit()
return True
except ValueError:
return False
def get_unique_pins():
exclude = [
getattr(board, p)
for p in [
# This is not an exhaustive list of unexposed pins. Your results
# may include other pins that you cannot easily connect to.
"NEOPIXEL",
"DOTSTAR_CLOCK",
"DOTSTAR_DATA",
"APA102_SCK",
"APA102_MOSI",
"LED",
"SWITCH",
"BUTTON",
]
if p in dir(board)
]
pins = [
pin
for pin in [getattr(board, p) for p in dir(board)]
if isinstance(pin, Pin) and pin not in exclude
]
unique = []
for p in pins:
if p not in unique:
unique.append(p)
return unique
for bit_clock_pin in get_unique_pins():
for word_select_pin in get_unique_pins():
for data_pin in get_unique_pins():
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