bluetooth-lowenergy

we have a BLE peripheral that connects to the phone every hour and passes some data. Here is how the process works: Upon launch with key UIApplicationLaunchOptionsBluetoothCentralsKey in application(didFinishLaunchingWithOptions launchOptions) app re-initializes CBCentralManager with ID that was passed to it. Then it goes through the regular restoration cycle and reads data off the BLE peripheral. Performs REST request to the service in the cloud. Assuming that app has been launched at least once after phone reboot everything works well for a few days (if app isnt running or been forced out of

The specification for the BLE GATT battery service only lists the battery level characteristic although the descriptive text mentions "battery level and state ". I would like to indicate the battery charging/discharging state, however the characteristic that allows that (2A1A) is not included in any defined service. It seems this is an oversight by Bluetooth SIG. Will including an additional characteristic in the battery service for battery state be flagged as non-compliant with the specification? Will the addition of the battery state characteristic cause any issue with iOS or android

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I would appreciate an example of BLE peripheral mode for Android-L. The code that I have gives me strange errors (i.e too many advertisers) which makes no sense as there are no advertisers that i can see from scanner like Lightblue on ios. https://github.com/geoaxis/BluetoothTest works on my nexus 5 running L. At first when initializing advertising I was getting: public static final int ADVERTISE_FAILED

I am working on a BLE project in Android Studio and would like to read the RSSI value of a device which I have already connected to. So far I was able to discover new devices via LE Scan and get their RSSI from there. However, once I connect to a device I can no longer run a scan and get the RSSI. This is the code for discovering new devices before connecting to one of them. Not sure how relevant it is to my question though: private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() { @Override public void onLeScan(final BluetoothDevice device,final int

I am working on BLE Applications, I have tested with different devices like Nexus, Moto, Samsung, LG. I am getting the GATT Error 133 in Samsung Devices alone(Samsung A5 2016). Trying to connect 10 times it gets connected only 2 or 3 times.Please Help me out. 来源： https://stackoverflow.com/questions/40465373/android-ble-gatt-error-133-getting-often-with-samsung-devices

I have my app running on two iOS device (both have 6.1.4) where one device acts as the Central and one acts as a Peripheral. I have been successful in getting notifications (characteristics set up to notify) from the Peripheral over to the Central just fine. However, I was wanting to write a value from the Central to the Peripheral to a specific writable characteristic but that always fails. The peripheral:didWriteValueForCharacteristic:error: delegate's method is immediately called where the error description says: "One or more parameters were invalid" I have been searching the net for any

I am working with my own BLE-devices. When listening after these devices I would like to use ScanFilter , so I only get the devices I am interested in. My solution right now is to filter inside the callback but it would be better if this filtration could happen earlier and according to the specification it should be possible. I am trying to filter on the manufacturer specific data but I can not get it to work. This is my code: BluetoothLeScanner bleScanner = bluetoothAdapter.getBluetoothLeScanner(); ScanFilter filter = getScanFilter(); List<ScanFilter> scanFilters = new ArrayList<>();