Hi, On Tue, Sep 22, 2015 at 8:13 AM, <krishnaks@xxxxxxxxxxxxxxxx> wrote: >>> Hi, >>> >>> On Monday 21 of September 2015 06:43:20 krishnaks@xxxxxxxxxxxxxxxx >>> wrote: >>>> Hi, >>>> >>>> I am using Bluez 5.33 on Android kitkat 4.4.3. >>>> I am testing GATT functionality and I found that sometime >>>> onWriteCharacteristic returns status 1 (BT_STATUS_FAIL). In android >>>> Application I am checking for success status (i.e. 0) which I am >>>> getting >>>> most of the time. But occasionally I am getting Status 1 because of >>>> which >>>> my application logic is failing. >>>> >>>> When Bluez will send Status 1 and on what basis? How to avoid this? >>>> >>>> >>>> -----------------------Working Log------------------------------- >>>> D/BluetoothGatt( 1359): writeCharacteristic() - uuid: >>>> 1d4de0a0-9f84-11e4-a042-0002a5d5c51b >>>> D/BtGatt.GattService( 1259): writeCharacteristic() - >>>> address=00:00:39:36:85:2F >>>> D/BtGatt.GattService( 1259): onWriteCharacteristic() - >>>> address=00:00:39:36:85:2F, status=0 >>>> D/BluetoothGatt( 1359): onCharacteristicWrite() - >>>> Device=00:00:39:36:85:2F >>>> UUID=1d4de0a0-9f84-11e4-a042-0002a5d5c51b Status=0 >>>> ----------------------Log End------------------------- >>>> >>>> >>>> --------------------------Failure Log--------------------------------- >>>> D/BluetoothGatt( 1359): writeCharacteristic() - uuid: >>>> 1d4de0a0-9f84-11e4-a042-0002a5d5c51b >>>> D/BtGatt.GattService( 1259): writeCharacteristic() - >>>> address=00:00:39:36:85:2F >>>> D/BtGatt.GattService( 1259): onWriteCharacteristic() - >>>> address=00:00:39:36:85:2F, status=1 >>>> D/BluetoothGatt( 1359): onCharacteristicWrite() - >>>> Device=00:00:39:36:85:2F >>>> UUID=1d4de0a0-9f84-11e4-a042-0002a5d5c51b Status=1 >>>> --------------------------Log End------------------------------- >>> >>> Please enable debug logs for daemon (check android/README for how-to) >>> and >>> provide both debug logs and btmon HCI traces. >>> >>> -- >>> BR >>> Szymon Janc >>> -- >>> To unsubscribe from this list: send the line "unsubscribe >>> linux-bluetooth" >>> in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> >> Hi, >> >> Attached Working and Failure logs with btmon HCI traces and with bluez >> debug logs >> >> Regards, >> KP >> > > Hi, > > From the log (attached in previous mail), From the btmon HCI traces,I am > getting "Error: Invalid Handle (0x01)" error. I hope this error is not > related to characteristics handle range.How to resolve this error/ find > the cause? > > Log---> > > < ACL Data TX: Handle 64 flags 0x00 dlen 9 [hci0] > 66.810476 > ATT: Find Information Request (0x04) len 4 > Handle range: 0x0633-0x0633 I suspect the handle 0x0633 does not exist in the remote database, it is quite unusual to have an attribute with that big handle anyway. >> ACL Data RX: Handle 64 flags 0x02 dlen 10 [hci0] > 66.944822 > ATT: Find Information Response (0x05) len 5 > Format: UUID-16 (0x01) > Handle: 0x0633 Probably something wrong with the remote stack, it seems the response is malformed as it should contain the UUID not just the handle. >> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] > 67.078076 > Num handles: 1 > Handle: 64 > Count: 1 >> ACL Data RX: Handle 64 flags 0x02 dlen 9 [hci0] > 72.209941 > ATT: Error Response (0x01) len 4 > Write Request (0x12) > Handle: 0x0241 > Error: Invalid Handle (0x01) This is also wrong, how come there is a second response in sequence without any request in between? Or the logs are not complete? Maybe Android API does not impose the limitation of only having one outstanding request per connection but you still have to follow that when using GATT otherwise you may get disconnected for invalid behavior. > D/BtGatt.GattService( 829): onWriteCharacteristic() - > address=00:00:39:36:85:2F, status=1 > D/BluetoothGatt( 1073): onCharacteristicWrite() - Device=00:00:39:36:85:2F > UUID=1d4de0a0-9f84-11e4-a042-0002a5d5c51b Status=1 > I/HCSDP_COLLECTORLIB( 1073): Fail characteristic write. > > Regards, > KP > > -- > To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Luiz Augusto von Dentz -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
