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Speaker example on Mac Pi Pico 2 W never seems to increase the sample count #24
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using the sample code in https://github.com/pschatzmann/Adafruit_TinyUSB_Arduino/blob/Audio/examples/Audio/audio_speaker/audio_speaker.ino it runs and the Mac sees it as a speaker and I can play out to it but the serial output only every shows this: Total samples: 5556 / Sample rate: 44100 It carries on going but never changes. To my completely newbie eyes it looks like writeCB stops getting called? |
Replies: 2 comments 2 replies
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Just look what the sketch is doing: it is providing the audio data in the callback which is just counting the samples and in the loop we print the processed samples... You could use the AudioTools to do something more useful in the callback and e.g. write the data to I2S |
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Hi Thanks for the quick response! I was writing an application to do as you suggested — to process the data — but that’s when I encountered the issue. I then stripped it back to your example to check my code hadn’t altered the behaviour. I think I’m still misunderstanding the expected behaviour of the code, so I’ve tried below to outline what I expected versus what I observe. Hopefully you can point out my misunderstanding, as I’d love to get this up and running. ⸻ What I Expected to Happen ⸻ What Actually Happens |
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Ok tested on windows all works as expected so either:
would be good to rule out 1 and 2 before I pull things apart |
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Since I only use Linux, this has not been tested with any other operating systems. |
Just look what the sketch is doing: it is providing the audio data in the callback which is just counting the samples and in the loop we print the processed samples...
You could use the AudioTools to do something more useful in the callback and e.g. write the data to I2S