4 Replies Latest reply on May 11, 2016 2:36 PM by Intel Corporation

    [edison] when smartphone turn off, bluez get error...

    kacey

      I have hard time with bluez...

      plz, help me..

       

      I'm working with nodejs (use bleno)

      I want to connect smart phone with edison.

      and it works. but..

      when phone is turning off(and It has low connectivity it means rssi is low.. ), ble isn't work anymore.

      and I recognized that after command..

           rfkill block bluetooth

           rfkill unblock bluetooth

      and then it work.. (I think it is because BCM43340 restarted...)

      but I have to restart my node.js program.

       

      I want to know,

      How can I prevent it.

      or..

      How can I get working ble without restart my node.js program.

       

       

      when smart phone is turning off, I got this error message..

           Bluetooth: Frame Reassembly Failed

           Bluetooth: hci0 command 0x1405 tx timeout

       

      when I restart my node.js program without rebooting BCM43340, I got this error message..

           [ 2978.427043] Bluetooth: hci0 command 0x200a tx timeout

           [ 2980.426796] Bluetooth: hci0 command 0x0406 tx timeout

           [ 3267.976723] Bluetooth: hci0 command 0x0c01 tx timeout

           [ 3269.976541] Bluetooth: hci0 command 0x2001 tx timeout

           [ 3271.976128] Bluetooth: hci0 command 0x1001 tx timeout

           [ 3273.975882] Bluetooth: hci0 command 0x0c6d tx timeout

           [ 3275.975574] Bluetooth: hci0 command 0x0c6c tx timeout

           [ 3277.975320] Bluetooth: hci0 command 0x1009 tx timeout

       

      this is why I think this problem is because BCM43340 doesn't work...

        • 1. Re: [edison] when smartphone turn off, bluez get error...
          Intel Corporation
          This message was posted on behalf of Intel Corporation

          Hello kacey,

          I believe that the correct approach would be to handle the issue from the project's script. I mean, you could add an exception to the code for this kind of issue that could prevent the script from crashing; my idea is that the exception would make the Edison disconnect from the phone before it turns off. Another way to handle it is to have the script check for the RSSI (since you mentioned that RSSI is low) and if it gets too low, disconnect the Edison from the phone to prevent the issue. 
          I believe the issue is not in the BCM43340 but on the script, because it might not know what to do when the connection to the phone is lost so it needs to be restarted when it happens. Have you tried to just restart the script instead of the BCM43340 and the script? What happens?

          Peter.

          • 2. Re: [edison] when smartphone turn off, bluez get error...
            kacey

            hi peter.

            thanks for your reply.

             

             

            I already did "check for the RSSI and if it gets too low,  disconnect the Edison from the phone."

            but it doesn't work. because, It doen't get low rssi when phone is turning off.

            instead of it,I can detect if rssi doesn't updated. (using check timeout..)

            I checked it. and it works. so  when I detect rssi update timeout, I call process.exit(1); and I use forever to restart my node.js application.

             

             

            I'd like to know why is it happened?

            could it be a bluez problem?

             

            there is one thing I confused about what you said.

            "Have you tried to just restart the script instead of the BCM43340 and the script? What happens?"

            what does it mean?

             

            I've understand like below..

            if  I restart my program without "rfkill block bluetooth" and "rfkill unblock bluetooth" ,

            I get those messages.(I've told already..)

                 [ 2978.427043] Bluetooth: hci0 command 0x200a tx timeout

                 [ 2980.426796] Bluetooth: hci0 command 0x0406 tx timeout

                 [ 3267.976723] Bluetooth: hci0 command 0x0c01 tx timeout

                 [ 3269.976541] Bluetooth: hci0 command 0x2001 tx timeout

                 [ 3271.976128] Bluetooth: hci0 command 0x1001 tx timeout

                 [ 3273.975882] Bluetooth: hci0 command 0x0c6d tx timeout

                 [ 3275.975574] Bluetooth: hci0 command 0x0c6c tx timeout

                 [ 3277.975320] Bluetooth: hci0 command 0x1009 tx timeout

             

             

            It doesn't happen everytime when phone is turning off.

            sometimes it doesn't happen..(at that time, I can connect edison normally after rebooting phone )

             

            kacey

            • 3. Re: [edison] when smartphone turn off, bluez get error...
              Intel Corporation
              This message was posted on behalf of Intel Corporation

              Can you share your code? I would like to see if I can replicate this behavior.

              Peter.

              • 4. Re: [edison] when smartphone turn off, bluez get error...
                Intel Corporation
                This message was posted on behalf of Intel Corporation

                Hi kacey,

                Do you still have issues with this? If so, could you share your code to see if we can replicate the issue?

                Peter.