Re: eSCO or SCO link?

2009/3/30 卞磊 [off-list ref]:

Hi All,
 I made a mistake when writing the email, I have not complete my question.

2009/3/31 卞磊 [off-list ref]:

quoted

Hi All,
 I have a stlc2500c which is a Bluetooth 1.2 chip. When debuging
function 'hci_connect', i found the hci link type of the arguments was
SCO_LINK, because i enabled 'lmp_esco_capable' in my kernel, it call
'hci_setup_sync' to setup eSCO link.

But when i check connection by 'hcitool con', the hcitool show it was
a SCO link. So, is it a SCO link or eSCO link? Thanks.

hcitool con will report eSCO if it is eSCO, so you have a SCO link.

hci_setup_sync can be used for both SCO and eSCO, and the chipset
and/or the host stack will fall back to SCO if eSCO parameters can not
be negotiated. An LMP log will show why.

Nick