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Merge pull request #2568 from adafruit/audio_bff_examples
Adding CP example code and audio files
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# SPDX-FileCopyrightText: 2023 ladyada for Adafruit Industries | ||
# | ||
# SPDX-License-Identifier: MIT | ||
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# Demo audio player that plays random wav files from internal storage or | ||
# SD card. Default pinout matches the Audio BFF for QT Py S2, S3 and RP2040 | ||
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import os | ||
import random | ||
import audiocore | ||
import board | ||
import audiobusio | ||
import audiomixer | ||
import adafruit_sdcard | ||
import storage | ||
import digitalio | ||
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card_cs = digitalio.DigitalInOut(board.A0) | ||
card_cs.direction = digitalio.Direction.INPUT | ||
card_cs.pull = digitalio.Pull.UP | ||
sdcard = None | ||
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DATA = board.A1 | ||
LRCLK = board.A2 | ||
BCLK = board.A3 | ||
audio = audiobusio.I2SOut(BCLK, LRCLK, DATA) | ||
mixer = None | ||
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button = digitalio.DigitalInOut(board.BUTTON) | ||
button.switch_to_input(pull=digitalio.Pull.UP) | ||
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wave_files = [] | ||
for filename in sorted(os.listdir("/")): | ||
filename = filename.lower() | ||
if filename.endswith(".wav") and not filename.startswith("."): | ||
wave_files.append(filename) | ||
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def open_audio(): | ||
n = random.choice(wave_files) | ||
print("playing", n) | ||
f = open(n, "rb") | ||
w = audiocore.WaveFile(f) | ||
return f, w | ||
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wavefile = 0 | ||
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while True: | ||
if not sdcard: | ||
try: | ||
sdcard = adafruit_sdcard.SDCard(board.SPI(), card_cs) | ||
vfs = storage.VfsFat(sdcard) | ||
storage.mount(vfs, "/sd") | ||
print("Mounted SD card") | ||
wave_files = ["/"+file for file in os.listdir('/') if file.endswith('.wav')] | ||
wave_files += ["/sd/"+file for file in os.listdir('/sd') if file.endswith('.wav')] | ||
print(wave_files) | ||
except OSError: | ||
pass | ||
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if not button.value: | ||
if mixer and mixer.voice[0].playing: | ||
print("stopping") | ||
mixer.voice[0].stop() | ||
if wavefile: | ||
wavefile.close() | ||
else: | ||
wavefile, wave = open_audio() | ||
mixer = audiomixer.Mixer(voice_count=1, | ||
sample_rate=wave.sample_rate, | ||
channel_count=wave.channel_count, | ||
bits_per_sample=wave.bits_per_sample, | ||
samples_signed=True) | ||
mixer.voice[0].level = 0.1 | ||
audio.play(mixer) | ||
mixer.voice[0].play(wave) | ||
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while not button.value: | ||
pass |