Re: [Bluez-devel] "comlicated" setup - known issues for hid and SCO?

[Marcel Holtmann <marcel@holtmann.org>]

Hi Lars,

> | I don't see the hold mode. This can cause problem if they form a
> | scatternet. When both are connect what does "hcitool con" say?
> 
> without SCO connection active:
> Connections:
> ~        < ACL 00:0E:07:33:DE:2B handle 45 state 1 lm MASTER
> ~        > ACL 00:07:61:04:D6:7D handle 41 state 1 lm MASTER
> 
> 
> with active SCO connection:
> Connections:
> ~        < SCO 00:0E:07:33:DE:2B handle 44 state 1 lm SLAVE
> ~        < ACL 00:0E:07:33:DE:2B handle 45 state 1 lm MASTER
> ~        > ACL 00:07:61:04:D6:7D handle 41 state 1 lm MASTER

so both devices are in the same piconet. There should be no problem, but
from my position I can't tell you anything more.

> | Use "hciconfig hci0 revision" as root.
> 
> hci0:   Type: USB
> ~        BD Address: 00:04:61:81:4A:3E ACL MTU: 192:8  SCO MTU: 64:8
> ~        HCI 16.4
> ~        Chip version: BlueCore02
> ~        Max key size: 56 bit
> ~        SCO mapping:  HCI

This is a recent firmware version. So it should be fine.

> BTW, do you know what is the difference between using channel "1" and
> "no" channel for the SCO connection? The btsco client has this option,
> and if it's used as "1" the language for the RFCOMM commands seems to be
> different (i.e. if I press the take/hold button on the headset, I get
> "AT+BVRA=?" when using without "channel", but "AT+CKPD=200" when used
> with channel 1).

I've never used the btsco software.

Regards

Marcel




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