57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# SPDX-FileCopyrightText: 2019 Anne Barela for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import time
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import os
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import digitalio
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import audioio
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import audiocore
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import board
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import adafruit_matrixkeypad
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# Membrane 3x4 matrix keypad - https://www.adafruit.com/product/419
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cols = [digitalio.DigitalInOut(x) for x in (board.D3, board.D2, board.D1)]
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rows = [digitalio.DigitalInOut(x) for x in (board.D7, board.D6, board.D5, board.D4)]
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keys = ((1, 2, 3),
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(4, 5, 6),
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(7, 8, 9),
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('*', 0, '#'))
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keypad = adafruit_matrixkeypad.Matrix_Keypad(rows, cols, keys)
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wavefiles = [file for file in os.listdir("/sounds/")
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if (file.endswith(".wav") and not file.startswith("._"))]
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if len(wavefiles) < 1:
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print("No wav files found in sounds directory")
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else:
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print("Audio files found: ", wavefiles)
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# audio output
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gc_audio = audioio.AudioOut(board.A0)
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audio_file = None
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def play_file(filename):
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global audio_file # pylint: disable=global-statement
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if gc_audio.playing:
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gc_audio.stop()
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if audio_file:
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audio_file.close()
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audio_file = open(filename, "rb")
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wav = audiocore.WaveFile(audio_file)
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gc_audio.play(wav)
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while True:
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keys = keypad.pressed_keys
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if keys:
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print("Pressed: ", keys)
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button = keys[0]
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if button > 0 and button < 9:
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soundfile = "/sounds/0"+str(keys[0])+".wav"
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play_file(soundfile)
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if button == 0:
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gc_audio.stop()
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if audio_file:
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audio_file.close()
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time.sleep(0.1)
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