why does ZED could not being rejoin backoff？

What do you mean "it was failed turned to rejoin backoff state?"

Hi Yikai

       i set a  LED to get  the state  of the ZED。

       when  DEV_NWK_DISC ，the LED will always blink， and when it turn to DEV_NWK_BACKOFF it will be turn off。

               case DEV_NWK_DISC:               
                      HalLedBlink ( HAL_LED_1, 0,LOST_NETWROK_FLASH, LOST_NETWROK_CYCLE );
                break;
               
              case DEV_NWK_BACKOFF:
                 HalLedSet ( HAL_LED_1 , HAL_LED_MODE_OFF);
                break;

        but sometimes the LED could not be turn off ， （at this time  i found  there is not more beacon request）

        

      

 

1. I would suggest you to use Ubiqua Packet Analyzer to check if the device still does beacon request in backoff mode.
2. I know there is a modification to improve rejoin backoff operation in Z-Stack Home 1.2.2a so I suggest you to use Z-Stack Home 1.2.2a to test again.

- [6902] Fixed a problem where an End-Device would fail to rejoin the network
after missing a NWK key change. The functions ZDApp_ProcessNetworkJoin() and
ZDO_SyncIndicationCB() were modified to improve rejoin backoff operation.

Hi  Yikai

1.  it was happen by accident， and there is two case.

     One ： the LED always blink ， but  there is not more beacon request.

     Two ： the LED always blink，  and there is beacon request（but  i don't know whether  is missing NWK key） ,and  stop the debug ，and  found that the  zclXXX_NwkState is DEV_NWK_DISC 

 

2.  How could i know whether  the device  is  missing the NWK key  depend the beacon request？

BR!

You cannot know if the device is missing the NWK key depend the beacon request. I would suggest you to test on Z-Stack Home 1.2.2a and see if the problem is still there.

I found that ZED could not send out the beacon request although it was on DEV_NWK_DISC！

is that mean sometimes the ZED could not know its state change ，but actually it was really change the state ~~~~

Do you test this on Z-Stack Home 1.2.2a?

can i install 1.2.2a in other disk ? i don't want to install in C disk

Yes, It is no problem.

i trying to test  the 1.2.2a ,  But  i failed  to installed it ！

could you give me a hand?

Hi yikai

when i restart（power off/on） the device， it could be OK to rejoin the network.!!!!

Have you install Z-Stack Home 1.2.2a successfully and tested on it?