September 2003 - Bluetooth-dev

Re: remoteNameRequest
by Bubba Giles 10 Sep '03

10 Sep '03

> An IOBluetoothDevice object has the following metod: > > - (IOReturn)remoteNameRequest:(id)target; > > What is the (id)target argument? What should the argument be if i want > to send the REMOTE_NAME_REQUEST message to my mobile phone? > (The thing is: I want to get the name of the bluetooth device, without > having to set up a full link establisment first) > > I would be grateful for any help! > > Best regards, > Eivind Andersen Hi Elvind: We've tried to a decent job at headerdoc'ing everything. If there is some that is not clear, please let us know. In answer to your question, from IOBluetooth/objc/IOBluetoothDevice.h: /*! @method remoteNameRequest: @abstract Issues a remote name request to the target device. @discussion If a target is specified, the request is asynchronous and on completion of the REMOTE_NAME_REQUEST command, the method -remoteNameRequestComplete:status:name: will be called on the specified target. If no target is specified, the request is made synchronously and won't return until the request is complete. This call with operate with the default page timeout value. If a different page timeout value is desired, the method -remoteNameRequest:withPageTimeout: should be used instead. @param target The target to message when the remote name request is complete @result Returns kIOReturnSuccess if the remote name request was successfully issued (and if synchronous, if the request completed successfully). */ - (IOReturn)remoteNameRequest:(id)target; Basically, target is your obj-c object that you want to get notified when the remote name request is complete. Just implement - (void)remoteNameRequestComplete:(IOBluetoothDevice *)device status:(IOReturn)status; In that object and you will get the device back, and if you call getNameorAddress on that device at that point you will get the remote name that was retrieved (or the address if we failed to get it). HTH, Jason bubba(a)apple.com _______________________________________________ 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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remoteNameRequest
by Eivind Andersen 10 Sep '03

10 Sep '03

An IOBluetoothDevice object has the following metod: - (IOReturn)remoteNameRequest:(id)target; What is the (id)target argument? What should the argument be if i want to send the REMOTE_NAME_REQUEST message to my mobile phone? (The thing is: I want to get the name of the bluetooth device, without having to set up a full link establisment first) I would be grateful for any help! Best regards, Eivind Andersen _______________________________________________ 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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What framework/classes/methods for proximity sensor
by Eivind Andersen 08 Sep '03

08 Sep '03

Hi, I am new to both mac and bluetooth development, and I have some questions. What framework(s)/classes/methods should I use, if the application only needs to know the ID-nr (UUID?) to the bluetooth device (lots of hex nr) and/or name. (ie. My t68). I will not transfer anything to the device itself, but I have to know that it4s in reach. (Similar to Clickers Proximity Sensor). Any ideas on how this can be done? (I plan to use cocoa through obj-c) Is there more sample code that I can look at somewhere? The apps included with dev tools are a little too complicated for me. Eivind Andersen _______________________________________________ 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: RFCOMMServer: how to accept multiple connections?
by Michael Larson 04 Sep '03

04 Sep '03

On Sep 4, 2003, at 10:51 AM, Crichlow, Eric wrote: Well, we have multiple Bluetooth tablets initiating connections to the Mac. There seems to sometimes be minor problems when we initiate multiple connections simultaneously. Sometimes none of the connections succeed, other times most or all of them do. But in general it seems to work quite well. At worst we just have to initiate the connections one at a time. The only real problem comes in trying to get 7 devices connected at once. The 7th, and sometimes even the 6th device seems to have a lot of trouble connecting. This is likely due to a limitation in the Bluetooth baseband. You could try bumping up the page timeout value for your connection attempts to the Mac, but there is no way to know at the start how many devices which the computer you are connecting to already has. This will likely all come down to a basic scheduling problem - When you are not doing anything you can listen for longer, and the more you do (active connections), the less time you have to listen for, so the probability of success drops. The sequence of events for creating a connection with a longer page timeout is unfortunately more complex from a Bluetooth specification point of view. The setting for the page timeout is a global value, so you if you want to keep a short default all the time and just bump it up for a single connection attempt you will need to bump it up for the connection attempt you care about and bump it down afterwards. The WritePageTimeout HCI command (HCI_Write_Page_Timeout) can be used. As a test, if you double this, you should see fewer failed connections from the device side. There is not currently an option on the Mac side to control this value, but this is something we are considering for a future API release. This should not affect you for this issue however, as you need to bump this value up on the tablet side for it to take effect when the tablet is connecting. You may want to consider bumping this value up to a larger value by default on your device, or just consider bumping it up for any connection reattempt if the default value did not succeed - it really depends on how many computers the device may want to connect to since a larger page timeout value means longer latency for determining that a connection could not be made, but a larger accuracy of connecting to a loaded computer. -larson _______________________________________________ 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: RFCOMMServer: how to accept multiple connections?
by Crichlow, Eric 04 Sep '03

04 Sep '03

> Given all that, RFCOMM server should be able to handle > getting multiple channel notifications from several remote > devices as once. I know that it's purpose in life when > originally developed was not to handle that case, so I would > not be surprised if there were some issues with it > needing logic to separate out the data from each channel and > handle it differently. We will have a look at this for a > future release and clean it up if needed. Well, we have multiple Bluetooth tablets initiating connections to the Mac. There seems to sometimes be minor problems when we initiate multiple connections simultaneously. Sometimes none of the connections succeed, other times most or all of them do. But in general it seems to work quite well. At worst we just have to initiate the connections one at a time. The only real problem comes in trying to get 7 devices connected at once. The 7th, and sometimes even the 6th device seems to have a lot of trouble connecting. ...Eric... _______________________________________________ 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: RFCOMMServer: how to accept multiple connections?
by Dr. Victor Kulesh 04 Sep '03

04 Sep '03

That indeed works just fine. thanks everybody. Victor On Thursday, September 4, 2003, at 08:59 AM, Michael Larson wrote: This is correct. An RFCOMM channel number by itself is not a unique identifier for the local device. It is a unique identifier for a connection between the local device and a remote device. In fact because of the way that the Bluetooth specification adopted the serial emulation layer (it hides a bit, and uses if for indicating direction), a RFCOMM channel number does not uniquely ID a connection between a local device and a remote device. For example: The Mac could open RFCOMM channel 3 to the phone, and the phone could open RFCOMM channel 3 on the Mac. There are really some more bits there which uniquely ID those channels so that they are both not channel 3, but they are hidden in the Bluetooth portion of the RFCOMM specification. For this reason there is an isIncoming API to determine whether this is a RFCOMM channel which was opened on another device, or an RFCOMM channel which another device opened on the Mac. Given all that, RFCOMM server should be able to handle getting multiple channel notifications from several remote devices as once. I know that it's purpose in life when originally developed was not to handle that case, so I would not be surprised if there were some issues with it needing logic to separate out the data from each channel and handle it differently. We will have a look at this for a future release and clean it up if needed. _______________________________________________ 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: develop a bluetooth application
by Dr. Victor Kulesh 04 Sep '03

04 Sep '03

OS X does not currently support Audio Gateway Profile so what you are trying to do is not exactly doable at the moment. Regards, Victor On Thursday, September 4, 2003, at 06:24 AM, Rahul Gupta wrote: Hi! can someone tell me how to develop a bluetooth application for communicating between a wireless headset and a Mac OS X PC. with regards Rahul _______________________________________________ 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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Re: RFCOMMServer: how to accept multiple connections?
by Michael Larson 04 Sep '03

04 Sep '03

This is correct. An RFCOMM channel number by itself is not a unique identifier for the local device. It is a unique identifier for a connection between the local device and a remote device. In fact because of the way that the Bluetooth specification adopted the serial emulation layer (it hides a bit, and uses if for indicating direction), a RFCOMM channel number does not uniquely ID a connection between a local device and a remote device. For example: The Mac could open RFCOMM channel 3 to the phone, and the phone could open RFCOMM channel 3 on the Mac. There are really some more bits there which uniquely ID those channels so that they are both not channel 3, but they are hidden in the Bluetooth portion of the RFCOMM specification. For this reason there is an isIncoming API to determine whether this is a RFCOMM channel which was opened on another device, or an RFCOMM channel which another device opened on the Mac. Given all that, RFCOMM server should be able to handle getting multiple channel notifications from several remote devices as once. I know that it's purpose in life when originally developed was not to handle that case, so I would not be surprised if there were some issues with it needing logic to separate out the data from each channel and handle it differently. We will have a look at this for a future release and clean it up if needed. -larson On Sep 2, 2003, at 11:36 AM, Crichlow, Eric wrote: I am in the process of modifying RFCOMMServer to allow it accepting connections from multiple clients. Well, I don't know the first thing about sockets, but I have a setup where multiple Bluetooth device can initiate connections to my application. To accomplish this all I had to do was set up an incoming channel. Whenever a device connects, it comes in on that channel, I have a callback that gets called and (according to the Apple guys here) the Bluetooth system software does a master-slave switch, leaving the system ready to accept another incoming connection. _______________________________________________ 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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develop a bluetooth application
by Rahul Gupta 04 Sep '03

04 Sep '03

Hi! can someone tell me how to develop a bluetooth application for communicating between a wireless headset and a Mac OS X PC. with regards Rahul _______________________________________________ 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: OBEXQuickPush Sample doesn't compile -(
by Bubba Giles 03 Sep '03

03 Sep '03

You can just remove the references to AppleArchiver.h at the top of the file, and this code section, starting at line 162: /* if ( ItemAtPathNeedsArchiving( mCurrentFilePath ) ) { NSString* newPath; newPath = AppleArchiveCreateUniquelyFromPath( kAppleArchiveOptionsNone, mCurrentFilePath ); if ( newPath == nil ) { [self updateUI:kBadFileSpecifiedStatus errorCode:status bytesSent:0 bytesTotal:0]; [self performSelector:@selector(completeTransfer:) withObject:nil afterDelay:1]; goto exit; } if ( ![[NSFileManager defaultManager] fileExistsAtPath:newPath isDirectory:&directory] ) { [self updateUI:kBadFileSpecifiedStatus errorCode:status bytesSent:0 bytesTotal:0]; [self performSelector:@selector(completeTransfer:) withObject:nil afterDelay:1]; goto exit; } mCurrentFileIsArchive = TRUE; mCurrentFilePath = newPath; } */ Compile that, and it should work. Note that you will only be able to send files with data forks. If there is a resource fork or if it is a directory, the file will not get sent. Jason bubba(a)apple.com > Dear listmembers, > > The sampleproject 3OBEXQuickPush2 from Apple won9t compile, I get the > following error > OBEXPushWindowController.m:42: header file 'AppleArchiver/AppleArchiveLib.h' > not found > > What should I do? Is there a newer Sample as the one from the > Dec200DevToolsCD? > > > Regards > Michael Slomski > > ------------------------------------------------------------------- > Computerkartographie M. Slomski > Kartographie Systemberatung & Betreuung > f|r Apple Macintosh > > > Schnorr-von-Carolsfeld-Str. 19 > D-81927 M|nchen > > Tel.: ++49 +89-929 40 57 oder ++49 +177-44 57 990 > Fax.: ++49 +89-939 311 71 > Email: Michael.Slomski(a)t-online.de > _______________________________________________ > 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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