October 2002 - Bluetooth-dev

Use a scripting language to do BT stuff...?
by Sam Griffith 29 Oct '02

29 Oct '02

Anyone tried using Python or Ruby with their respective Obj-C binding layers to do any Bluetooth stuff...? If so, I'd like to hear your experiences... Thanks, -- Sam Griffith Jr. email: staypufd(a)mac.com Web site: http://homepage.mac.com/staypufd/index.html _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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Re: D-link DWB-120M chip set
by Rajpaul Bagga 16 Oct '02

16 Oct '02

Well, according to this linux site that I ran across in the past: http://www.holtmann.org/linux/bluetooth/devices.html It has a Broadcom chipset. Please keep in mind that I have no extra information to confirm nor deny the accuracy of that web page. -Rajpaul On Tuesday, October 15, 2002, at 08:06 PM, Andrew Jones wrote: Does anyone know the Bluetooth chip set used in the D-Link DWB-120M? Thanks, Andrew Jones _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored. _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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D-link DWB-120M chip set
by Andrew Jones 16 Oct '02

16 Oct '02

Does anyone know the Bluetooth chip set used in the D-Link DWB-120M? Thanks, Andrew Jones _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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RE: Disabling Pagescans
by Keith Phu 15 Oct '02

15 Oct '02

The duration of required real-time performance can vary, but it would be in the order of minutes. I wrote a simple test application that sends a few bytes of data over an RFCOMM connection from one Mac to another. Data is sent periodically (ie every 10 ms). Two times are recorded 1) The time when RFCOMMWrite is called from the Master Mac 2) The time when the incoming data handler is called from the Slave Mac The difference between these two times (latency) is consistently 5 ms (plus or minus 2 ms), but every 1.28s, the difference will jump to ~40 ms. I tried using the PageDisableTool on both machines, but this didn't solve the problem. I looked at the Bluetooth Spec again, and found that there's also an InquiryScan state that may be causing the periodic jump in latency. Any more ideas? If there is no solution, at least knowing the cause of this periodic error would still be beneficial. Keith -----Original Message----- From: bluetooth-dev-admin(a)lists.apple.com [mailto:bluetooth-dev-admin@lists.apple.com] On Behalf Of Michael Larson Sent: Friday, October 11, 2002 11:54 PM To: Bluetooth Dev Subject: Re: Disabling Pagescans There is not an API available for this function at this time. What is the duration of your real-time application - IE is it needed for a matter of seconds, minutes, or hours? -larson On Friday, October 11, 2002, at 12:37 AM, Keith Phu wrote: > I'm trying to use Bluetooth for a real-time application, and it's > important that the latency and jitter of transmissions are fairly > consistent. Mostly, the Mac Bluetooth stack performs well ( < 10 ms > latency), but periodically the latency of my transmissions will jump to > over 50 ms. This happens approximately every 1.28 seconds. Looking > through the Bluetooth specification, I think that the Bluetooth device > is entering the PageScan state and delaying my transmissions. > > Is there a way to temporarily disable a bluetooth device from entering > the PageScan mode? In the spec, it mentions that the page scan > interval > can also be configured to have a maximum of 2.56s (on page 97 of the > Bluetooth Specification). This would help, but being able to manually > disable and enable page scans would completely solve my problem. > > In the Bluetooth API, there's the function, > IOBluetoothDeviceGetPageScanMode, so I can retrieve the page scan mode > for a device, but I don't see any ways to set or disable it. > > Does anyone have any ideas? Or is there no way to prevent page scans? > > Keith > _______________________________________________ > bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com > Help/Unsubscribe/Archives: > http://www.lists.apple.com/mailman/listinfo/bluetooth-dev > Do not post admin requests to the list. They will be ignored. _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored. _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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Ericsson
by Martin Kvapil 14 Oct '02

14 Oct '02

Does anybody have a little example codepice to share with me or maby have some info how i can get my Ericsson to dial? /kvapil ----------------------------- | Martin Kvapil | Kvapil Consulting | + 46 708 442935 ----------------------------- _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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Re: New on the list
by Stephen Martin 14 Oct '02

14 Oct '02

Martin; We are also looking at having some sort of download / update package on Apple's developer site. We apologize for the "missing link" on that site, the SDK was removed because it was out of date. We have had some trouble getting a replacement. Until we do, I'll post Mike Larson's previous message. Steve M. ==== On Saturday, October 12, 2002, at 07:40 AM, Michael Larson wrote: > From: Michael Larson <larson(a)apple.com> > Date: Sat Oct 12, 2002 7:40:02 AM US/Pacific > To: Martin Kvapil <martin(a)kvapil.se> > Cc: bluetooth-dev(a)lists.apple.com > Subject: Re: New on the list > > The Bluetooth SDK is now part of Jaguar. The pieces of the SDK are > now rolled into the Jaguar Developer packages. > > Since the latest release of the developer pieces requires Jaguar, and > are included on the Jaguar CD, there is no reason to post a separate > version. Just install the Developer Tools portion of Jaguar, and the > Bluetooth SDK pieces will all be there. > > The following Jaguar packages install the various pieces of the > Bluetooth SDK: > > Developer Tools > Packet Decoder2 tool > Bluetooth Monitor > > Developer Examples > /Developer/Examples/Bluetooth folder > > Developer Documentation > Framework Documentation found in > /System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/ > English.lproj/Documentation > > > -larson > > On Saturday, October 12, 2002, at 03:16 AM, Martin Kvapil wrote: > >> Im new on the list so excuse me for asking something that may already >> been coverd but, here we go any way. >> >> What did Apple do with the bluetooth sdk?!? >> Why is it missing? >> Where can i get it anyway? >> >> Best regards Martin Kvapil > _______________________________________________ > bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com > Help/Unsubscribe/Archives: > http://www.lists.apple.com/mailman/listinfo/bluetooth-dev > Do not post admin requests to the list. They will be ignored. > -- Stephen R. Martin Hardware Engineer Worldwide Developer Technical Support Apple Computer, Inc. email: s.martin(a)apple.com 1 Infinite Loop, MS: 303-2T phone: (408) 974-1910 Cupertino, CA 95014 fax: (408) 974-8101 _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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Re: New on the list
by Michael Larson 12 Oct '02

12 Oct '02

The Bluetooth SDK is now part of Jaguar. The pieces of the SDK are now rolled into the Jaguar Developer packages. Since the latest release of the developer pieces requires Jaguar, and are included on the Jaguar CD, there is no reason to post a separate version. Just install the Developer Tools portion of Jaguar, and the Bluetooth SDK pieces will all be there. The following Jaguar packages install the various pieces of the Bluetooth SDK: Developer Tools Packet Decoder2 tool Bluetooth Monitor Developer Examples /Developer/Examples/Bluetooth folder Developer Documentation Framework Documentation found in /System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/ English.lproj/Documentation -larson On Saturday, October 12, 2002, at 03:16 AM, Martin Kvapil wrote: Im new on the list so excuse me for asking something that may already been coverd but, here we go any way. What did Apple do with the bluetooth sdk?!? Why is it missing? Where can i get it anyway? Best regards Martin Kvapil _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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New on the list
by Martin Kvapil 12 Oct '02

12 Oct '02

Im new on the list so excuse me for asking something that may already been coverd but, here we go any way. What did Apple do with the bluetooth sdk?!? Why is it missing? Where can i get it anyway? Best regards Martin Kvapil ----------------------------- | Martin Kvapil | Kvapil Consulting | + 46 708 442935 ----------------------------- _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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Re: Disabling Pagescans
by Michael Larson 11 Oct '02

11 Oct '02

There is not an API available for this function at this time. What is the duration of your real-time application - IE is it needed for a matter of seconds, minutes, or hours? -larson On Friday, October 11, 2002, at 12:37 AM, Keith Phu wrote: I'm trying to use Bluetooth for a real-time application, and it's important that the latency and jitter of transmissions are fairly consistent. Mostly, the Mac Bluetooth stack performs well ( < 10 ms latency), but periodically the latency of my transmissions will jump to over 50 ms. This happens approximately every 1.28 seconds. Looking through the Bluetooth specification, I think that the Bluetooth device is entering the PageScan state and delaying my transmissions. Is there a way to temporarily disable a bluetooth device from entering the PageScan mode? In the spec, it mentions that the page scan interval can also be configured to have a maximum of 2.56s (on page 97 of the Bluetooth Specification). This would help, but being able to manually disable and enable page scans would completely solve my problem. In the Bluetooth API, there's the function, IOBluetoothDeviceGetPageScanMode, so I can retrieve the page scan mode for a device, but I don't see any ways to set or disable it. Does anyone have any ideas? Or is there no way to prevent page scans? Keith _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored. _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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Disabling Pagescans
by Keith Phu 11 Oct '02

11 Oct '02

I'm trying to use Bluetooth for a real-time application, and it's important that the latency and jitter of transmissions are fairly consistent. Mostly, the Mac Bluetooth stack performs well ( < 10 ms latency), but periodically the latency of my transmissions will jump to over 50 ms. This happens approximately every 1.28 seconds. Looking through the Bluetooth specification, I think that the Bluetooth device is entering the PageScan state and delaying my transmissions. Is there a way to temporarily disable a bluetooth device from entering the PageScan mode? In the spec, it mentions that the page scan interval can also be configured to have a maximum of 2.56s (on page 97 of the Bluetooth Specification). This would help, but being able to manually disable and enable page scans would completely solve my problem. In the Bluetooth API, there's the function, IOBluetoothDeviceGetPageScanMode, so I can retrieve the page scan mode for a device, but I don't see any ways to set or disable it. Does anyone have any ideas? Or is there no way to prevent page scans? Keith _______________________________________________ bluetooth-dev mailing list | bluetooth-dev(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.

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