MP3 Playback on PI Pico

scottiebabe over 4 years ago

Soft 404

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bobross427 over 3 years ago

Hey I'm new to this and can follow the wiring diagrams just fine, copy and paste just fine.

I have tried a couple of the code examples for mp3 playback that seem to work good, with the intent to make a noise or rain machine, but cant get the files to play in a loop.

------- original example -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
"""
CircuitPython multiple MP3 playback example for Raspberry Pi Pico.
Plays two MP3 files consecutively, once time each.
"""
import board
import audiomp3
import audiopwmio

audio = audiopwmio.PWMAudioOut(board.GP0)

mp3files = ["rain1.mp3", "rain2.mp3"]

mp3 = open(mp3files[0], "rb")
decoder = audiomp3.MP3Decoder(mp3)

for filename in mp3files:
    decoder.file = open(filename, "rb")
    audio.play(decoder)
    print("Playing:", filename)
    while audio.playing:
        pass

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Thanks if you have a working idea.
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scottiebabe over 3 years ago in reply to bobross427

.
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bobross427 over 3 years ago in reply to scottiebabe

Thanks that worked after about half hour, when I realized the T in true needed to be True, per your example.

Thanks again.
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jc2048 over 3 years ago in reply to scottiebabe

Won't you need to close the files when they're no longer being used, or does Python handle that kind of thing for you?
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scottiebabe over 3 years ago in reply to jc2048

.
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jc2048 over 3 years ago in reply to scottiebabe

I should have done a quick search first. This page

https://www.tutorialspoint.com/python/file_close.htm#:~:text=Python%20file%20method%20close%20%28%29%20closes%20the%20opened,Calling%20close%20%28%29%20more%20than%20once%20is%20allowed.

says
Python automatically closes a file when the reference object of a file is reassigned to another file.
so it looks like you're fairly safe in what you're doing.
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jc2048 over 3 years ago in reply to scottiebabe

I should have done a quick search first. This page

https://www.tutorialspoint.com/python/file_close.htm#:~:text=Python%20file%20method%20close%20%28%29%20closes%20the%20opened,Calling%20close%20%28%29%20more%20than%20once%20is%20allowed.

says
Python automatically closes a file when the reference object of a file is reassigned to another file.
so it looks like you're fairly safe in what you're doing.
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