83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
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# SPDX-License-Identifier: MIT
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# Example of sound playback from VS1053 FeatherWing. Can be modified to work
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# with the breakout by changing the SD card and SPI pins mentioned below.
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# NOTE:
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# Unfortunately this doesn't work--the loop isn't fast enough to feed the VS1053
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# data at the rate it needs for playback. You'll see very erratic behavior with
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# the VS1053 making static, stopping, and eventually requiring a hard reset.
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# We'll need to look into interrupt support perhaps to monitor DREQ like in the
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# arduino library. Basic sine wave playback does however work and monitoring
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# of attributes like status register and other VS1053 state is accessible.
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import adafruit_sdcard
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import board
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import busio
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import digitalio
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import storage
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import adafruit_vs1053
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# Define pins connected to VS1053:
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# For FeatherWing with Feather M0:
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SDCS = board.D5 # Pin connected to SD card CS line.
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MP3CS = board.D6 # Pin connected to VS1053 CS line.
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DREQ = board.D9 # Pin connected to VS1053 DREQ line.
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XDCS = board.D10 # Pin connected to VS1053 D/C line.
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# Other configuration:
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PLAYBACK_FILE = "/sd/test.wav" # Name of file to play.
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# This should be the full path
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# including /sd prefix if on
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# sd card.
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BUFFER_SIZE = 128 # Size in bytes of the MP3 data buffer for sending data to
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# the VS1053.
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# Setup SPI bus (hardware SPI).
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spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
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# Setup SD card and mount it in the filesystem.
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sd_cs = digitalio.DigitalInOut(SDCS)
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sdcard = adafruit_sdcard.SDCard(spi, sd_cs)
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vfs = storage.VfsFat(sdcard)
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storage.mount(vfs, "/sd")
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# To list all the files on the SD card root uncomment:
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# import os
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# print('SD card root contains:')
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# print(os.listdir('/sd'))
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# Setup VS1053.
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vs1053 = adafruit_vs1053.VS1053(spi, MP3CS, XDCS, DREQ)
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# Set volume of left and right channels.
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# Value ranges from 0 to 255 for each channel, the lower the higher volume.
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vs1053.set_volume(0, 0)
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# Play a test tone (this works).
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print("Playing test tone for two seconds...")
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vs1053.sine_test(0x44, 2.0)
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print("Done playing tone!")
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# Play back a MP3 file by starting playback, then reading a buffer of data
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# at a time and sending it to the VS1053.
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# Unfortunately this doesn't work--the loop isn't fast enough to feed the VS1053
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# data at the rate it needs for playback. You'll see very erratic behavior with
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# the VS1053 making static, stopping, and eventually requiring a hard reset.
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# We'll need to look into interrupt support perhaps to monitor DREQ like in the
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# arduino library.
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print(f"Playing {PLAYBACK_FILE}...")
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vs1053.start_playback()
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with open(PLAYBACK_FILE, "rb") as infile:
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music_data = infile.read(BUFFER_SIZE)
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while music_data:
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while not vs1053.ready_for_data:
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pass
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vs1053.play_data(music_data, end=len(music_data))
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music_data = infile.read(BUFFER_SIZE)
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print("Done!")
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