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

[Lars Grunewaldt <lgw@dark-reality.de>]

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Marcel Holtmann wrote:
| 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.
|

Hm OK thanks anyway. I'll try to find out what's happening.

|>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.

I'd not have asked if I thought it would have to do (much) with btsco.

Here's what this channel does (default if not given is 2):

	addr.rc_family = AF_BLUETOOTH;
	bacpy(&addr.rc_bdaddr, dst);
	addr.rc_channel = channel;
	if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		close(s);
		return -1;
	}

I just thought you might remember something from the BT specs or so. But
if you don't, I don't want to bother you, I can read up myself :)

thanks,
~  Lars
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