core-bluetooth

I have to make an application to pair an iOS and Android device (iPhone 5, iPad 3, Galaxy S3, Nexus 7 they all use Bluetooth 4.0) and then send data to each other. Is this amount of data limited ? Can we send something like a photo or a PDF? I've already done the pairing and sending data between 2 iOS devices using CoreBluetooth and the sample code from Apple BTLE_Transfer Of what i understood, a Peripheral (Server) can Advertise to a Central (Client). This central is scanning around itself, and then try to find the Server by looking for the UUID of the service advertised. When i make a Server

Can anyone tell me how many devices can we pair via Bluetooth to iPhone at a time..need help..till now i have not got the exact number. As it stands in iOS 6.1.4, the current limit for Bluetooth Low Energy devices is 10 simultaneous CONNECTIONS (at least on the NRF8002 chipset). Although the BLE spec says it can in theory have an infinite number of connections, the connection will time out when you try to add an 11th device. As for the pairing table, I've previously had two additional a2dp devices in my pairing table(not connected) and 10 current BLE connections as the maximum. So that is a

I can't find any official way to get a UUID string back out of a CBUUID. These UUIDs can be 2 or 16 bytes long. The goal is to store CBUUIDs in a file somewhere as a string, and then resurrect with [CBUUID UUIDWithString:] etc. Here is what I have so far. // returns a simple 4 byte string for 16bit uuids, 128 bit uuids are in standard 8-4-4-4-12 format // the resulting string can be passed into [CBUUID UUIDWithString:] +(NSString*)CBUUIDToString:(CBUUID*)cbuuid; { NSData* data = cbuuid.data; if ([data length] == 2) { const unsigned char *tokenBytes = [data bytes]; return [NSString

I'm developing a Bluetooth LE device and am having trouble because of MacOS's caching of the services. If I try to delete a service or change its UUID on the device I'm developing, the change doesn't show up on the Mac and instead I continue seeing the old list of services and UUIDs from the device. I tried going to another Mac that hadn't paired with my device and it saw the new list of services with the correct UUIDs, so it seems to be a caching issue with my development Mac. I found the com.apple.Bluetooth.plist file in /Library/Preferences and deleted it, but the system put it back with

I am trying to read data from a bluetooth device (BR-LE4.0-S2). I was able to connect BLE device, but not able to read data from it.I don't have any specification about BLE services and it's characteristics. Here what my issue is - (void)peripheral:didUpdateValueForCharacteristic:error: not getting called. I followed tutorial " https://developer.apple.com/library/ios/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/PerformingCommonCentralRoleTasks/PerformingCommonCentralRoleTasks.html#//apple_ref/doc/uid/TP40013257-CH3-SW2 " .Following is my code. What my requirement is to

I am trying to discover "Bluetooth Headset" and get its events. I read the "CoreBluetooth" documentation and implemented sample code as below. It does not fire the delegate method ' didDiscoverPeripheral '. Is there any solution for this? Code: CBCentralManager *myCentralManager; [myCentralManager scanForPeripheralsWithServices:nil options:nil]; -(void)centralManagerDidUpdateState:(CBCentralManager *)central{ //following line prints CBCentralManagerStatePoweredOn NSLog(@"state:%@", [self getCentralManagerState:central.state]); } //following method does not fire -(void)centralManager: