April 2003 - Bluetooth-dev - lists.apple.com

Re: How to detect presence of Bluetooth adapter
by Marco Pontil 10 Apr '03

10 Apr '03

Hi Eric, You should call "IOBluetoothLocalDeviceAvailable", from IOBluetoothUserLib.h: / /----------------------------------------------------------------------- --------------------------------------------------- /*! @function IOBluetoothLocalDeviceAvailable @abstract Determines if a bluetooth device is available on a local machine or not. @result A Boolean value. TRUE if a Bluetooth device is connected to the local machine, FALSE otherwise. @discussion Determines if a bluetooth device is available on a local machine or not. */ extern Boolean IOBluetoothLocalDeviceAvailable(); ... Marco On Wednesday, April 9, 2003, at 04:17 PM, Crichlow, Eric wrote: > Is there a way to detect whether or not a Bluetooth adapter is > attached > to the system before attempting Bluetooth operations? > > I would like to be able to do this before ever calling any > Bluetooth > function, as opposed to relying on the error value returned by trying > to > make a Bluetooth function call, since items in my user interface > should be > disabled from the start based on whether or not Bluetooth is enabled. > > ...Thanx... > ...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. _______________________________________________ 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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How to detect presence of Bluetooth adapter
by Crichlow, Eric 09 Apr '03

09 Apr '03

Is there a way to detect whether or not a Bluetooth adapter is attached to the system before attempting Bluetooth operations? I would like to be able to do this before ever calling any Bluetooth function, as opposed to relying on the error value returned by trying to make a Bluetooth function call, since items in my user interface should be disabled from the start based on whether or not Bluetooth is enabled. ...Thanx... ...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: BT Data "echo"
by Eric Brown 04 Apr '03

04 Apr '03

What version of Mac OS X are you running? - Eric On Friday, April 4, 2003, at 09:49 AM, Crichlow, Eric wrote: I've got a couple of BT devices that transmit a relatively small amount of data, about 300 - 500 bytes per second, depending on the device. I don't buffer this data in any way, and go straight to processing it. Periodically, with no apparent rhyme or reason, I appear to get a re-transmission of previous data. In other words, my rfcommEventListener all of a sudden gets called with a bunch of the same data that it was already called with. I can't figure out why this would happen. I can't imagine that it's anything I'm doing, since, as I said, I'm not buffering the data, and even if I was, I'm never manually calling that event listener anyway. I tried, as a workaround to minimize the negative impact, freeing or zeroing out the data in the IOBluetoothRFCOMMChannelEvent, but the the system tells me that isn't my memory to go tampering with. Is there something I'm missing? Is there some way that I'm supposed to dispose of the data after I process it? ...Thanx... ...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. _______________________________________________ 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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BT Data "echo"
by Crichlow, Eric 04 Apr '03

04 Apr '03

I've got a couple of BT devices that transmit a relatively small amount of data, about 300 - 500 bytes per second, depending on the device. I don't buffer this data in any way, and go straight to processing it. Periodically, with no apparent rhyme or reason, I appear to get a re-transmission of previous data. In other words, my rfcommEventListener all of a sudden gets called with a bunch of the same data that it was already called with. I can't figure out why this would happen. I can't imagine that it's anything I'm doing, since, as I said, I'm not buffering the data, and even if I was, I'm never manually calling that event listener anyway. I tried, as a workaround to minimize the negative impact, freeing or zeroing out the data in the IOBluetoothRFCOMMChannelEvent, but the the system tells me that isn't my memory to go tampering with. Is there something I'm missing? Is there some way that I'm supposed to dispose of the data after I process it? ...Thanx... ...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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