Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)

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From: Yechezkal Gutfreund (sgutfreund_at_hotmail.com)
Date: 02/17/05 

Date: Thu, 17 Feb 2005 17:13:38 -0500

Minimally, we are looking at the following setup

1. Dell Axim 30 (or equiv) with WidCom stack talking to these two Bluetooth
devices simultaneously

    A. Nokia 6820 - for internet tcp/ip service to the PDA (we use the AT&T
Communication manager on the
        PDA which can connect and use the Nokia cell phone as a modem to the
internet. We believe it is using
       a serial connection to do this

    B. Delorme EarthMate GPS Bluetooth logger. We can confirm that this can
be done in isolation (without #A)
        over serial port #7. We are getting a solid feed of lat/long
positions. We are currently having problems doing
      both #A and #B.

      We using J.W. Hedgehog's GPS library (written for .NET in C#).
http://www.jwhedgehog.com/

The GPS device provides a continuous stream (text) over the serial point of
GPS track points. The cell phone is providing a variety of open TCP sockets
for inter-player communication.

In the future we will also want to tie in a sony Bluetooth camera and a
Leica distance rangefinder. We can provide model numbers, but let's see
about just the first basic two items.

"Peter Foot [MVP]" <feedback@nospam-inthehand.com> wrote in message
news:uX62QoSFFHA.2700@TK2MSFTNGP14.phx.gbl...
> Yechezkal,
>
> It really depends at what level you want to work with the devices, for
> example bonding the device and setting a virtual com port may be
> sufficient.
> There are two main stacks available, the Microsoft one and
> Widcomm/Broadcom. They both have very different programming models, and
> both have advantages and disadvantages, the Microsoft stack has a free
> documented SDK, but the Widcomm/Broadcom stack has support for a wider
> range of profiles.
>
> What specifically do you want to achieve? you mention both GPS and
> range-finder devices, do you need to work with multiple devices connected
> at the same time, are you using an external application/library to process
> the raw GPS data?
>
> Peter
>
> --
> Peter Foot
> Windows Embedded MVP
> www.inthehand.com | www.opennetcf.org
>
> "Yechezkal Gutfreund" <sgutfreund@hotmail.com> wrote in message
> news:O4kpndSFFHA.2600@TK2MSFTNGP09.phx.gbl...
>> This probably a Peter Foot question....
>>
>> We are going to be trying to interface a couple of different devices
>> (GPS, laser rangefinders, etc.) to a PDA.
>>
>> We are tempted to buy the Dell Axims with the WidComm (is it now BoradCom
>> stack? since Widcom was bought by BroadCom?).
>>
>> Newer Ipaqs (VGA) list BroadComm as the stack.
>>
>> Does anyone have any kvetches or preferences that can lead us to buy
>> equipment that has a better bluetooth stack protocol? (better meaning
>> easier to use!).
>>
>> We also are aware of things like btConnect and McSoft BlueThunder for
>> working with the stacks, but we don't really know what they are needed
>> for exactly or which are better.
>>
>> (Sorry, it is pretty clear we are novices in this area, from the above
>> questions).
>>
>>
>> --
>> ==================================
>> Yechezkal Gutfreund
>> Chief Scientist
>> Kesser Technical Group, Inc.
>> ==================================
>>
>
>

Relevant Pages

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