* [Bluez-users] Problem with slow Speed of Socket CF Card
@ 2004-05-29 8:47 Wolfgang Mües
2004-05-29 9:00 ` Marcel Holtmann
0 siblings, 1 reply; 4+ messages in thread
From: Wolfgang Mües @ 2004-05-29 8:47 UTC (permalink / raw)
To: bluez-users
Hello,
I am using the Socket Communications CF Card Rev. G with the CSR chipset=20
and the bcsp protocol in my Zaurus C750 with Kernel 2.4.18.
It is working fine (thank you, guys).
hicattach opens the card with a speed of 230 KBit/s. This is the speed=20
the CSR chipset is initialized after reset. I am using PAN, and I get a=20
file transfer rate of about 150 KBit/s. With other bluetooth devices=20
(USB dongle) I get about 550-600 KBit/s.
I have asked Socket Communications if the card is limited to slow=20
baudrates, and they have answered me that this card is able to perform=20
about 730 KBit/s under ideal conditions.
Obviously, this is not possible with a serial UART and 230 KBit/s.
So there must be a speed change command, and I want to use it.
Can anybody give me some usefull advice how to proceed?=20
I am able to write/change kernel drivers, but I have no hint where to=20
start and how to get the speed change information in the bcsp protocol.
best regards
Wolfgang M=FCes
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bluez-users] Problem with slow Speed of Socket CF Card
2004-05-29 8:47 [Bluez-users] Problem with slow Speed of Socket CF Card Wolfgang Mües
@ 2004-05-29 9:00 ` Marcel Holtmann
2004-05-29 9:39 ` Wolfgang Mües
0 siblings, 1 reply; 4+ messages in thread
From: Marcel Holtmann @ 2004-05-29 9:00 UTC (permalink / raw)
To: Wolfgang Mües; +Cc: BlueZ Mailing List
Hi Wolfgang,
> I am using the Socket Communications CF Card Rev. G with the CSR chipset
> and the bcsp protocol in my Zaurus C750 with Kernel 2.4.18.
> It is working fine (thank you, guys).
>
> hicattach opens the card with a speed of 230 KBit/s. This is the speed
> the CSR chipset is initialized after reset. I am using PAN, and I get a
> file transfer rate of about 150 KBit/s. With other bluetooth devices
> (USB dongle) I get about 550-600 KBit/s.
>
> I have asked Socket Communications if the card is limited to slow
> baudrates, and they have answered me that this card is able to perform
> about 730 KBit/s under ideal conditions.
>
> Obviously, this is not possible with a serial UART and 230 KBit/s.
> So there must be a speed change command, and I want to use it.
>
> Can anybody give me some usefull advice how to proceed?
> I am able to write/change kernel drivers, but I have no hint where to
> start and how to get the speed change information in the bcsp protocol.
this is simple. Try "hciattach <dev> socket 460800".
Look at the manpage and the source code of hcitattch, because the kernel
hasn't really to do anything with it.
Regards
Marcel
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2004-05-29 8:47 [Bluez-users] Problem with slow Speed of Socket CF Card Wolfgang Mües
2004-05-29 9:00 ` Marcel Holtmann
2004-05-29 9:39 ` Wolfgang Mües
2004-05-29 9:56 ` Marcel Holtmann
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