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Playing WAV files gets interrupted randomly

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  • Playing WAV files gets interrupted randomly

    Hello,

    I've a problem with playing WAV files from uSD card on gen4-ULCD-43DCT-CLB. Although sound quality is acceptable (but still with hearable noise, even when using MOTG-AC2 evalboard), I've noticed random interruption from time to time. It seems like the output is muted for a while and after that everything comes ok. This problem is mainly at the first run of my device.
    It's not amplifier-related at all, I've tested it with custom-made analog circuit based on MOTG-AC2 (gate + 4-stage passive RC filter + external amplifier module, of course with proper supply decoupling&filtering).

    Has anyone faced an issue like this? What could be possible cause of such problem?

    Thanks in advance.
    Best regards,

    Przemyslaw

  • #2
    Hi Przemyslaw,

    We haven't heard of this issue before. Could you please try the attached PmmC to see if it makes a difference.

    Best regards

    Paul.

    Attached Files

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    • #3
      Hi Przemyslaw,

      If you still have the issue, could you please try changing the buffer size.

      Snd_BufSize();

      The default is 1024 so you could try 2048 to start with to see if it improves.

      Best regards

      Paul

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      • #4
        pauleilio thank you for support, I'll test attached firmware and return with feedback

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