I know this has been discussed a lot of times in this list and the conclusion was that, only use "hci_create_connection" for debugging purpose.
I created the connections with "hci_create_connection" and the connection gets lost everytime after 40-50 seconds just like the following email from this list (mine are BroadCom based Dongles):
"I am connecting a Armadillo CF card to a TDK PC card using "hcitool cc
<BD_ADDR>". The connection appears fine, but after a short period (40 sec
or so) seems to drop off. I am running a script to monitor the RSSI values.
This worked fine with a 3Com card, but connection drops with the TDK.
Any ideas why?
Tim"
I didn't see any follow-ups to this email. Any insights on why this should happen. I know "hci_create_connection" makes link-level connections without taking into account the transport level protocols (like L2CAP) running on the host. But for the RSSI, TPL etc. extraction, I need to create only link-level connection so "hci_create_connection" would have been perfect choice for me without that problem. Any explanation?
If not successful, I have to work around it by creating higher transport level connections it seems.
Thanks
Mahtab
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Hi Mahtab,
> I know this has been discussed a lot of times in this list and the
> conclusion was that, only use "hci_create_connection" for debugging
> purpose.
then stick with it.
> I created the connections with "hci_create_connection" and the
> connection gets lost everytime after 40-50 seconds just like the
> following email from this list (mine are BroadCom based Dongles):
>
> "I am connecting a Armadillo CF card to a TDK PC card using "hcitool cc
> <BD_ADDR>". The connection appears fine, but after a short period (40 sec
> or so) seems to drop off. I am running a script to monitor the RSSI values.
> This worked fine with a 3Com card, but connection drops with the TDK.
>
> Any ideas why?
we should a device keep a not used ACL link open. This costs power. I
also don't think that this is a problem of your card. It is a problem of
your target device. In general BlueZ doesn't drop connections.
Regards
Marcel
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