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connection terminated under android 6 after 10 seconds

schoensn

Hello,

I have modified the Android-nRF-Blinky Application to use it with the Datathroughput Demo on the nRF52 DK.

The android application runs on a Nexus 9 with android 6.0.1. I can establish a conneciton and i also can recieve notifications, but after about 10 seconds the connection is lost.

with the mastercontrolpanel i have the same behavioron the tablet..

if i run the application on my sony xperia z3 compact with android 5.1.1 it works fine and also with the mastercontrol panel i have no problems.

here is the log from the android studio..

BluetoothGatt: connect() - device: C5:7F:B0:8E:AA:91, auto: false
BluetoothGatt: registerApp()
BluetoothGatt: registerApp() - UUID=3a9c080d-ae20-47ea-b34c-7ea7798204cc
BluetoothGatt: onClientRegistered() - status=0 clientIf=5
BluetoothGatt: onClientConnectionState() - status=0 clientIf=5 device=C5:7F:B0:8E:AA:91
BluetoothGatt: discoverServices() - device: C5:7F:B0:8E:AA:91
BluetoothGatt: onSearchComplete() = Device=C5:7F:B0:8E:AA:91 Status=0
BluetoothGatt: setCharacteristicNotification() - uuid: 00002a05-0000-1000-8000-00805f9b34fb enable: true
BluetoothGatt: setCharacteristicNotification() - uuid: 00001625-1212-efde-1523-785feabcd123 enable: true
BluetoothGatt: cancelOpen() - device: C5:7F:B0:8E:AA:91
BluetoothGatt: onClientConnectionState() - status=59 clientIf=5 device=C5:7F:B0:8E:AA:91
BluetoothGatt: close()
BluetoothGatt: unregisterApp() - mClientIf=5

It seems that the return of status=59 of onClientConnectionState() closes the connection.. I havent found any information what status=59 mean.

Has somebody already tested the mastercontrolpanel on a device with android 6?

And where i get information about the meaning of "status=59" of onClientConnectionState() .. i couldnt find a reference so far.

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  • 0

    here are the connection parameter for the peripheral:

        #define MIN_CONN_INTERVAL               MSEC_TO_UNITS(7.5, UNIT_1_25_MS)
#define MAX_CONN_INTERVAL               MSEC_TO_UNITS(7.5, UNIT_1_25_MS)
#define SLAVE_LATENCY                   10                              
#define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(3000, UNIT_10_MS)

    the connection parameter update of the peripheral is rejected by the central and LL_TERMINATE_IND is sent by the central..

    I think I have found the reason.. see my answer below. I have to test it, if the connection parameters are accepted, when i change the connection parameters. I will post my results then.

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  • 0

    here are the connection parameter for the peripheral:

        #define MIN_CONN_INTERVAL               MSEC_TO_UNITS(7.5, UNIT_1_25_MS)
#define MAX_CONN_INTERVAL               MSEC_TO_UNITS(7.5, UNIT_1_25_MS)
#define SLAVE_LATENCY                   10                              
#define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(3000, UNIT_10_MS)

    the connection parameter update of the peripheral is rejected by the central and LL_TERMINATE_IND is sent by the central..

    I think I have found the reason.. see my answer below. I have to test it, if the connection parameters are accepted, when i change the connection parameters. I will post my results then.

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