Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)
From: Peter Foot [MVP] (feedback_at_nospam-inthehand.com)
Date: 02/18/05
- Next message: Alex Feinman [MVP]: "Re: Dial-Up Connection"
- Previous message: Waldek: "Accessing attributes from AssemblyInfo on CF"
- In reply to: Yechezkal Gutfreund: "Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)"
- Next in thread: Yechezkal Gutfreund: "Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)"
- Reply: Yechezkal Gutfreund: "Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)"
- Messages sorted by: [ date ] [ thread ]
Date: Fri, 18 Feb 2005 22:51:53 -0000
If you definately need simultaneous connections then simple virtual COM
ports might not be suitable, on most devices you are limited to a single
incoming and single outgoing COM port (although it is possible to register
ports with other prefixes) - this may not be an issue with Broadcomm, but
you have another issue with the broadcomm software giving you a choice of
devices when you try to establish a connection, this can be overridden with
some of the software libraries available. The OpenNETCF library will allow
you to establish a Socket connection to each device and you can send and
receive bytes using fairly familiar Socket programming for the MS stack
only. For Broadcomm support there are a few options, at the one end is their
own SDK which is rather costly, but there are some other offerings e.g.
http://www.high-point.com/ which offer good all-round functionality.
Peter
-- Peter Foot Windows Embedded MVP www.inthehand.com | www.opennetcf.org "Yechezkal Gutfreund" <sgutfreund@hotmail.com> wrote in message news:ePfhs3TFFHA.628@TK2MSFTNGP15.phx.gbl... > 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. >>> ================================== >>> >> >> > >
- Next message: Alex Feinman [MVP]: "Re: Dial-Up Connection"
- Previous message: Waldek: "Accessing attributes from AssemblyInfo on CF"
- In reply to: Yechezkal Gutfreund: "Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)"
- Next in thread: Yechezkal Gutfreund: "Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)"
- Reply: Yechezkal Gutfreund: "Re: BlueTooth stacks (WidComm, BroadComm, MS) (peter?)"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
