October 2012 - Bluetooth-dev

Re: cached services and cached characteristics
by Roman Curkin 18 Oct '12

18 Oct '12

Thanks for reply András Kövi, okay i understand what you say and know it makes sense. But i always do the "discoverServices" but sometimes, the didDiscoverServices not appears. but it seems i solved my own problem: my peripheral do advertising->resolvable address my iPhone scan first and when the UUID is not null i connect to it. so at this point i noticed 5 minutes ago, that my peripheral sometimes restarts. so my iPhone and Peripheral are paired-> both are saved the link keys. when the peripheral is restarts, then the links keys are not valid anymore, because the peripheral got new keys! so at this moment, when the peripheral restarts, i expect that the uuid of the peripheral is NULL, but it isn´t null. i connect to the peripheral with wrong keys. i don't know why but it works at this point. so what i must do: go preference->bluetooth->delete the paired peripheral. -scan again->connect->pairing->discoverServices ... and so far. how to check it-> if the central scan, and found my peripheral as NOT Null, something is wrong! -sometimes i must restart the iPhone, because it always resolve the address with wrong key. it works with resolvable Address->changed after connection thanks you very very much! _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

Re: cached services and cached characteristics
by András Kövi 18 Oct '12

18 Oct '12

_______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

cached services and cached characteristics
by Roman Curkin 18 Oct '12

18 Oct '12

Hello, i post two threads on the bluetooth-forum but got no answer. My problem: iPhone 4s is a central and scan for peripheral as peripheral i use the CSR1000- at this point i use random resolvable advertising address so first didDiscoverPeripheral -peripheral=null-> okay, no problem-> connectPeripheral->didConnectPeripheral->Pairing appears(IOS6 read some characteristics without my control)->discoverServices->didDiscoverServices-> all thinks are good and i can write or read something. after connection i "cancelPeripheralConnectioN" so scan again: second didDiscoverPeripheral: -peripheral:->not NULL->okay, i got a UUID from peripheral-> connectPeripheral->DidConnect->discoverServices-> didDiscoverServices never appears. try to write or read something->failed->peripheral.services=NIL try to save the service and characteristic->CoreBluetooth[WARNING] <CBConcreteCharacteristic: 0x210f77e0> is not a valid characteristic for peripheral <CBConcretePeripheral: 0x21046190 UUID = <CFUUID 0x21097780> D5753532-9E1D-6C0A-3378-C15977F3E057, Name = "Peripheral", IsConnected = YES> so no valid for this peripheral-> i look at the wwdc2012, at the last page-> central-caches services and characteristics how i can see the cached services and characteristics? thank you for help RomanC _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

Re: Details of Bluetooth HID support in iOS
by Matthias Ringwald 18 Oct '12

18 Oct '12

Hi George I have no idea if this is document, I'll answer based on observations. On Oct 17, 2012, at 5:08 PM, George Chung wrote: > Dear all, > > I don't find any details about Bluetooth HID in iOS document. > > 1. How many of keys does iOS support for Bluetooth HID keyboard? An iOS app can only receive single key enter events using the official APIs. > 2. How does the app know there is an Bluetooth HID keyboard? There's a way to receive a notification when the on-screen keyboard gets shown, e.g. to move fields above the keyboard. See e.g. Erica Sadun's iOS Cookbook. > 3. Does iOS support Bluetooth HID gamepad? How many key supports? How does an app know the availability of the Bluetooth gamepad? iOS supports e.g. the iCade device. To work around the limitations of the single key event, the iCade sends different keys for button up / down. So pressing the left arrow might send Q and releasing it might send A. With that, many buttons are supported. Cheers Matthias > > George > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/mringwal%40inf.ethz.ch > > This email sent to mringwal(a)inf.ethz.ch _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

Re: deallocation while connecting
by Steve Toh 18 Oct '12

18 Oct '12

Disregard, I didn't retain the returned peripherals! On Oct 17, 2012, at 3:34 PM, Steve Toh <steve(a)bluegoji.com> wrote: > Getting this while trying to connect to a CBPeripheral via didRetrievePeripherals. Is anybody else getting this? Also getting this when trying to connect to an already connected device with another app via didRetrieveConnectedPeripherals. > > CoreBluetooth[WARNING] <CBConcretePeripheral: 0x1e874550 UUID = <CFUUID 0x1d59b730> 6E78EF09-D420-941C-C717-D937126A7F20, Name = "(null)", IsConnected = YES> is being dealloc'ed while connected > > Thanks! > Steve _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

deallocation while connecting
by Steve Toh 17 Oct '12

17 Oct '12

_______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

Re: Scanning for specific service IDs in the background
by Andras Kovi 17 Oct '12

17 Oct '12

Hi Zsombor, I described this issue a few weeks ago and haven't got any response yet. Here's my observation and I think you bumped in this issue: Begin forwarded message: > > On 2012.09.28., at 22:14, Andras Kovi <allprog(a)gmail.com> wrote: > >> Hi Joakim, >> >> I just helped debugging an issue for Frederic and found a really interesting behavior. Please confirm or correct me. >> >> Observation: if the app is sent to background, the advertising continues but the advertisement data is not sent in the packages >> >> Effect 1: Backgrounded apps cannot be discovered by clients that filter for services. When a client uses scanForPeripheralsWithServices, the peripheral will be found but callback not happens in the app as the service filtering criteria will not be satisfied >> >> Effect 2: Backgrounded apps will never be discovered by clients that started scanning while the app was in background. If a client starts scanning while the app is in the background, CoreBluetooth finds the peripheral but callback does not happen. Then when the app comes to foreground and advertisement data is sent again, CoreBluetooth will not invoke the callback as it thinks it already provided the callback for that. (Discovery may happen only when the BLE address is changed (every 15 minutes or so)) >> >> I think this phenomenon can explain many recently reported issues too. >> >> Your help is much appreciated. >> >> Regards, >> Andras > On 2012.10.17., at 21:25, Zsombor Papp <zsombor.papp(a)logicallabs.com> wrote: > Hi, > > I am finding that if I invoke scanForPeripheralsWithServices with a nil parameter for services, it works fine in the background, but if I specify a service UUID then it won't discover the service. This same behavior is mentioned here: > > http://stackoverflow.com/questions/9896562/what-exactly-can-corebluetooth-a… > > although that post is more than 6 months old now and describes iOS 5.0.1 behavior. Can anyone confirm that the same behavior/limitation still applies to iOS6? > > Thanks, > Zsombor > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/allprog%40gmail.com > > This email sent to allprog(a)gmail.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

Scanning for specific service IDs in the background
by Zsombor Papp 17 Oct '12

17 Oct '12

Hi, http://stackoverflow.com/questions/9896562/what-exactly-can-corebluetooth-a… Thanks, Zsombor _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com I am finding that if I invoke scanForPeripheralsWithServices with a nil parameter for services, it works fine in the background, but if I specify a service UUID then it won't discover the service. This same behavior is mentioned here: although that post is more than 6 months old now and describes iOS 5.0.1 behavior. Can anyone confirm that the same behavior/limitation still applies to iOS6?

1 0

Details of Bluetooth HID support in iOS
by George Chung 17 Oct '12

17 Oct '12

Dear all, I don't find any details about Bluetooth HID in iOS document. 1. How many of keys does iOS support for Bluetooth HID keyboard? 2. How does the app know there is an Bluetooth HID keyboard? 3. Does iOS support Bluetooth HID gamepad? How many key supports? How does an app know the availability of the Bluetooth gamepad? George _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0

Re: Peripheral Manager is adding extra CBCharacteristicProperties
by Sébastien Martini 16 Oct '12

16 Oct '12

_______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

1 0