Regarding the bluetooth driver on Wince 6.0

Vinayakumar C

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Apr 7, 2010, 10:39:01 AM4/7/10

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Hi CEAssist,

Thanks in advance,
i am porting the thirdparty bluetooth stack onto the WINCE 6.0, I.MX31,
does the wince 6.0 has the bluetooth driverfor establishing the
communication between the host and the controller...i want to have the UART
as the physical transport layer between the host and the controller...

i want to know the driver name used for driving the controller... is it the
uart driver or the hci driver which drives the controller...?

please reply ASAP this is very much required for my work...

With Best Regards,
Vinayakumarc

Paul G. Tobey [ eMVP ]

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Apr 7, 2010, 12:06:01 PM4/7/10

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Do you have UART-based Bluetooth support in the OS? If so, you'll have to
tell it which UART to use, how to find it, what its characteristics are, etc.
It seems like you're expecting it to be a case of just turn on the driver,
somehow, and everything works. While that might work with a USB-based
Bluetooth controller, it's not going to be the case with UART-based. Check
the help first. Then read the Bluetooth driver code and see what registry
entries it wants for UART, if the help doesn't tell you. As with any driver
question in CE, start looking in \public\common\oak\drivers.

Paul T.

Vinayakumar C

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Apr 8, 2010, 2:25:01 AM4/8/10

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Hi Paul
Thanks for your reply.
Yes i do have support for UART.
Before porting the third-party stack, someone asked me to check if the
driver is present for driving the chip, so is it the UART driver (if UART is
selected as the physical bus) or the HCI driver (part of stack) which drives
the IC. please correct my understanding if i am wrong.

With Best Regards,
Vinayakumarc

Paul G. Tobey [ eMVP ]

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Apr 9, 2010, 6:03:01 PM4/9/10

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The UART option selects
C:\WINCE500\PUBLIC\COMMON\OAK\DRIVERS\BLUETOOTH\TRANSPORTS\UART\hciuart.cxx
as the Bluetooth hardware interface. You can see what it does and try to
replicate that in the Bluetooth stack you are porting...

Vinayakumar C

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Apr 12, 2010, 7:46:01 AM4/12/10

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HI Paul,

Thanks for your reply

with best regards,
vinayakumarc

Vinayakumar C

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Apr 13, 2010, 2:29:02 AM4/13/10

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Hi Paul,

I have one more question? does the btd.dll the upper bluetooth protocol
stack runs in kernel mode or user mode?. I have gone through help from msdn,
there they say that all the device drivers are loaded by the Device.exe
module during booting.
They have mentioned all the drivers which would be getting loaded, does
Btd.dll will also be loaded by the Device.exe.

We are adding the Profiles support and bluetooth transport driver through
catalog items which gets added to the OS design, but how does this Btd.dll
gets added to the OSdesign & loaded by which module?

thanks & regards,
vinayakumarc

Paul G. Tobey [ eMVP ]

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Apr 13, 2010, 11:32:01 AM4/13/10

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Search the registry of a built OS (reginit.ini), for btd.dll. That will tell
you where it is called out for enumeration during boot. The flags specified
in its registry entries will tell you how it is to be loaded (including
whether it's a user mode or kernel mode driver). It appears to me that it
will be loaded by device.exe...