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TI Home » TI E2E Community » Support Forums » Low Power RF & Wireless Connectivity » Bluetooth® Applications » Bluetooth SCO Audio aplay: pcm_write:1442: write error: I/O error in android
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Bluetooth SCO Audio aplay: pcm_write:1442: write error: I/O error in android

This question is answered
alexander reddy
Posted by alexander reddy
on Jul 22 2011 05:39 AM
Prodigy190 points

Hi

 

I am using overo gumstix board ,processor omap3530....board has wifi+bluetooth chip from marvell.

Intension:

Using alsa utilities to record/play audio on bluetooth directly once SCO connection with the headset is established. Use BluetoothSCOApp application to establish SCO link with an active Bluetooth headset.

To play audio on bluetooth headset over SCO

I am referring the ti side ,below mentioned....

http://processors.wiki.ti.com/index.php/Android_wireless_build_and_porting_guide#Bluetooth_SCO_Audio

# alsa_aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: overo [overo], device 0: TWL4030 twl4030-0
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: overo [overo], device 1: Marvel  BT PCM marvel-1
  Subdevices: 1/1
  Subdevice #0: subdevice #0

# alsa_aplay -D hw:0,1 lpc10.wav
Playing WAVE 'lpc10.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
aplay: pcm_write:1442: write error: I/O error

Please provide the solution to play audio on bluetooth headset over SCO.

Regards

Alex

 

 

 

 

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  • Vishveshwar Bhat
    Posted by Vishveshwar Bhat
    on Jul 22 2011 06:27 AM
    Verified Answer
    Verified by Miguel
    Genius9580 points

    Please check if the bluetooth firmware for your device supports SCO over PCM by default.

    I got the same error when using a version of WL1271  BT firmware for omap3evm which did not support SCO over PCM.

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    Please click the Verify Answer button on this post if it answers your question.
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