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Mic enable DM3730

vidyasagar prasad
Intellectual 475 points
Other Parts Discussed in Thread: TPS65950, DM3730

Hi all,

I am working on DM3730 processor. I want to enable Mic , which connected to TPS65950.

What is the suitable command to enable Mic and record/capture voice data.

I enabled speaker ,which also connected to the TPS65950 by the following command:

amixer cset name='HeadsetL Mixer AudioL2' off
amixer cset name='HeadsetR Mixer AudioR2' off
amixer set HandsfreeL on
amixer set HandsfreeR on
amixer set 'HandsfreeL Mux' AudioL2
amixer set 'HandsfreeR Mux' AudioR2

then aplay file.wav , speaker is working fine.

Please help me to enable Mic and record voice data.

Regards

Vidya.

  • 0
    Mastermind 8170 points

    There are threads for interface devices including CODECs and a separate one for processors. Either would be better than this thread for low power radios.

  • 0 in reply to H Stewart
    Intellectual 475 points

    H Stewart,

    I am working on DM3730 EVM board, want to enable Microphone.

    TPS64950 pins MIC.MAIN.P (E2) and MIC.MAIN.M (F2) are connected to Microphone.

    As given below :



    I followed the link :

    http://e2e.ti.com/support/microcontrollers/stellaris_arm_cortex-m3_microcontroller/f/471/p/addpost.aspx

    and using the following command :

    amixer cset name='HeadsetR Mixer AudioR2' off
    amixer set HandsfreeL on
    amixer set HandsfreeR on
    amixer set 'HandsfreeL Mux' AudioL2
    amixer set 'HandsfreeR Mux' AudioR2

    to enable the speaker,it is working fine.

    For enable Microphone using the following commands :

    amixer set 'Analog Left AUXL' nocap
    amixer set 'Analog Right AUXR' nocap
    amixer set 'Analog Left Main Mic' nocap
    amixer set 'Analog Left Headset Mic' cap

    and capturing data to arecord command arecord -vv file.wav and using aplay -vv file.wavto playback,it is playing back only noise data.

    Please suggest whether we need to change any settings or handle the code in kernel.

    thanks

    Vidya.

  • 0 in reply to vidyasagar prasad
    Expert 1180 points

    Think you should only on one micro phone .. not all the one

    Regards,

    Dibin

  • 0 in reply to dibin moolakadan1
    Intellectual 475 points

    Hi Dibin,

    Do you have any information how to enable the microphone on DM3730 ?

    Could you share with me ?

    Thanks,

    Vidya