Re: [Bluez-devel] Problems with anycom usb dongle (was: snd-bt-sco problem)

[Marcel Holtmann <marcel@holtmann.org>]

Hi Sebastian,

> > what does "/proc/bus/usb/device" show for the Anycom dongle?
> 
> T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#=  4 Spd=12  MxCh= 0
> D:  Ver= 1.10 Cls=e0(unk. ) Sub=01 Prot=01 MxPS=16 #Cfgs=  1
> P:  Vendor=0f4d ProdID=1000 Rev= 4.01
> C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr= 26mA
> I:  If#= 0 Alt= 0 #EPs= 3 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
> E:  Ad=82(I) Atr=02(Bulk) MxPS=  32 Ivl=0ms
> E:  Ad=03(O) Atr=02(Bulk) MxPS=  32 Ivl=0ms
> I:  If#= 1 Alt= 0 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=84(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> E:  Ad=05(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> I:  If#= 1 Alt= 1 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=84(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> E:  Ad=05(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> I:  If#= 1 Alt= 2 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=84(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> E:  Ad=05(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> I:  If#= 1 Alt= 3 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=84(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> E:  Ad=05(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> I:  If#= 1 Alt= 4 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=84(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> E:  Ad=05(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> I:  If#= 1 Alt= 5 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=hci_usb
> E:  Ad=84(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
> E:  Ad=05(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms

at least it has the ISOC endpoints.

> With the anycom dongle I can see SCO data using hcidump but no sound
> is playing. When btsco is stopped it seems to me the connection isn't
> really closed.
> hcidump:
> ...
>  > SCO data: handle 0x0000 dlen 0
>  > SCO data: handle 0x0000 dlen 0
> ...
> 
> syslog:
> ...
> kernel: cket: hci0 SCO packet for unknown connection handle 0
> kernel: hci_scodata_packet: hci0 SCO packet for unknown connection handle 0
> last message repeated 229 times
> ...

The dongle keeps sending SCO packet, but the kernel already terminated
the SCO connection. However I am not sure if connection handle 0 is a
valid handle. What does "hcitool con" show when both (ACL + SCO) links
were open?

Regards

Marcel




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