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T
tcg
Visitor II
January 8, 2023
Question

Can Somebody extract a functional project using MXCUBE with usb_audi_in form Microphones_streaming (X-CUBE-MEMSMIC1)?

  • January 8, 2023
  • 1 reply
  • 1019 views

Hi, I spend a lot of days trying to undestanding Microphones_streaming from X-CUBE-MEMSMIC1. That is very complex example and brillant at the same time. I want to extract the part for usb audio in streaming (device to pc), but it is a little crazy. it is important for me obtain a basic project for sending a randowm buffer. Then I want to create a support pack for ioc. Was some one able to generate a functional project only with this part? I ak for help to support but i can not be able to make with these indications. Thanks for your time

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    1 reply

    S
    SimonePradolini
    Technical Moderator
    January 24, 2023

    Hi @Tomás Cabeza​ ,

    I'm not sure I got your point: do you need an example that sends random data instead of microphone ones?

    If so, you can just simply pass your "random buffer" to the Send_Audio_to_USB function called into AudioProcess.

    Something like this:

    void AudioProcess(void)
{
 if (CCA02M2_AUDIO_IN_PDMToPCM(CCA02M2_AUDIO_INSTANCE, (uint16_t *)PDM_Buffer, PCM_Buffer) != BSP_ERROR_NONE)
 {
 Error_Handler();
 }
Send_Audio_to_USB((int16_t *)your_random_buffer, (AUDIO_IN_SAMPLING_FREQUENCY / 1000)*AUDIO_IN_CHANNELS * N_MS);
}

    X-CUBE-MEMSMIC1 is not supported in CubeMX.

    The microphone sampling frequency directly depends from the clock tree. Those values are strictly defined into the BSP_AUDIO file.

    As for now, CubeMX is not able to read BSP files and import a bounded clock tree.

    That's why we can't distribute MEMSMIC1 as a pack and there is no .ioc available.

    I wish my answer can help you.

    Feel free to further comment to find a proper solution for your use case.

    Best regards

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