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I have the following system:

bluetooth headset <-- HFP, HSP --> marvell bluetooth <-- PCM --> gsm modem

What I know:

First part works:

rfcomm0: 00:06:C6:36:02:92 -> 00:1A:7D:D0:04:6D channel 1 connected [reuse-dlc release-on-hup tty-attached]

and

l2ping 00:1A:7D:D0:04:6D Ping: 00:1A:7D:D0:04:6D from 00:06:C6:36:02:92 (data size 44) ... 4 bytes from 00:1A:7D:D0:04:6D id 0 time 7.99ms 4 bytes from 00:1A:7D:D0:04:6D id 1 time 20.35ms 4 bytes from 00:1A:7D:D0:04:6D id 2 time 16.65ms

The second part also works, because:

I measured the signals,

and in case of connecting data lines I had echo.

But I cannot speaking via my headset-PCM system.

Do you have any idea where the bug can be? I am sure I have to change something on the settings.

My idea:

If I open the modem port on the embedded Linux and starts a calling I hear nothing in my headset. It seems me however I have an open rfcomm serial interface for HFP, but I have no SCO connection created and maybe bluetooth chip does not forwards my PCM.

Tomi
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  • For the connection creating I used rfcomm. – Tomi Apr 19 '13 at 10:36
  • If I open the modem port on the embedded Linux and starts a calling I hear nothing in my headset. It seems me however I have an open rfcomm serial interface for HFP, but I have no SCO connection created and maybe bluetooth chip does not forwards my PCM. – Tomi Apr 19 '13 at 11:07

0 Answers0