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schreibfaul1 / ESP32-audioI2S

Play mp3 files from SD via I2S
GNU General Public License v3.0
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audio fails in some positions #760

Open lidense opened 1 month ago

lidense commented 1 month ago

I have a webradio using this nice library running on an M5stack Core2 with a small external DAC hooked to an amplified speaker with a cable audio jack 3.5. This device works well for the dozen or so mp3 or HLS radios stations that I have in my platformio sketch but in certain positions sound stops or runs intemittently with a period of about 1 sec. If I move the device in a different position it goes back to working. It doesn't seem to be a bad contact because the device and its DAC are held steady in a box. Wifi signal seems to be sufficient.
It reminds me of issues like going into some kind of resonance or interference in certain positions, any idea? Thanks

lidense commented 1 month ago

...the terminal gives this error message when the above happens: [ 80634][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

schreibfaul1 commented 1 month ago

[ 80634][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

I2C is probably used for communication with an external DAC? I have no idea, maybe an ACK problem.

If dropouts occur with HLS, which is quite possible, you can double the DMA buffer. While a new data packet is being fetched and decoded, the DMA must bridge the time. Unfortunately, the DMA in the ESP32 is very small.

lidense commented 1 month ago

OK, thanks. Regards

----- Mail d'origine ----- De: Wolle @.> À: schreibfaul1/ESP32-audioI2S @.> Cc: lidense @.>, Author @.> Envoyé: Tue, 04 Jun 2024 21:58:13 +0200 (CEST) Objet: Re: [schreibfaul1/ESP32-audioI2S] audio fails in some positions (Issue #760)

[ 80634][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

I2C is probably used for communication with an external DAC? I have no idea, maybe an ACK problem.

If dropouts occur with HLS, which is quite possible, you can double the DMA buffer. While a new data packet is being fetched and decoded, the DMA must bridge the time. Unfortunately, the DMA in the ESP32 is very small.

-- Reply to this email directly or view it on GitHub: https://github.com/schreibfaul1/ESP32-audioI2S/issues/760#issuecomment-2148316555 You are receiving this because you authored the thread.

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lidense commented 1 month ago

what is the maximum size of dma? And of dma count? Thanks

github-actions[bot] commented 10 hours ago

This issue is stale because it has been open for 30 days with no activity.