Re: StartLescan rerturns false

[Szymon Janc <ext.szymon.janc@tieto.com>]

Hi,

On Thursday 03 of September 2015 10:00:14 krishnaks@iwavesystems.com wrote:
> > Hi,
> > 
> > I have ported bluez to Android Kitkat 4.4.3 and I am testing Bluetooth Low
> > energy from android application.
> > BluetoothAdapter's method startLeScan returns false during scanning BLE
> > devices.
> > register-client method is getting called in hal-gatt.c. But looks like
> > "scanStarted" function is returning false.
> > 
> > Have anyone faced this issue.
> > 
> > Thanks in advance
> > KP
> 
> Hi All,
> 
> From the Android Logcat I found that GATT JNI is failing to initialize
> 
> E/BtGatt.JNI(  833): ERROR: void android::initializeNative(JNIEnv*,
> jobject)(L718): Failed to initialize Bluetooth GATT, status: 1##
> 
> Is this could be the reason for startlescan to return false?

Yes, profile must be initialized if you want to use it.

> Regards,
> KP
> 
> ----------------Log----------------------
> I/BtGatt.JNI(  833): void android::classInitNative(JNIEnv*, jclass)(L684):
> classInitNative: Success!
> D/BtGatt.DebugUtils(  833): handleDebugAction() action=null
> D/BtGatt.GattService(  833): Received start request. Starting profile...
> D/BtGatt.GattService(  833): start()
> D/BlueZ   (  833):
> external/bluetooth/bluez/android/hal-bluetooth.c:get_profile_interface()
> gatt
> D/BlueZ   (  833): external/bluetooth/bluez/android/hal-gatt.c:init()
> E/BtGatt.JNI(  833): ERROR: void android::initializeNative(JNIEnv*,
> jobject)(L718): Failed to initialize Bluetooth GATT, status: 1##
> I/ActivityManager(  523): Start proc com.android.mms for broadcast
> com.android.mms/.transaction.MmsSystemEventReceiver: pid=897
> D/BLE     ( 1233): Before LE Scan statusfalse
> D/BluetoothAdapter( 1233): startLeScan(): null
> D/BtGatt.GattService( 1059): registerClient123() -
> UUID=e7db8dc6-dc0b-41ff-b036-41b761fd4837
> I/audio_hw_primary(  188): start_output_stream... 2016291600, device 2
> W/audio_hw_primary(  188): card 1, port 0 device 0x2
> W/audio_hw_primary(  188): rate 48000, channel 2 period_size 0xc0
> W/audio_hw_primary(  188): do_out_standby... 2016291600
> D/BLE     ( 1233): After LE Scan statusfalse
> --------------Log--------------

There is no daemon logs here but my guess would be that required crypto stuff 
is missing in kernel. Check "Linux Kernel requirements" section in 
android/README for list of required kernel options.

-- 
BR
Szymon Janc