[BitCloud] End device StartNetworkReq

[danergo]

Hi!

I'm doing now some test on my network with one ED and a C.
ED is polling periodically C to check if the connection is still alive or not.

If I stop the C (unpower it), ED receives ZDO_NETWORK_LOST_STATUS through ZDO_MgmtNwkUpdateNotf. That's great.
However when I restart the C (power it again, so it starts from scratch), ED is just don't want to realise it. In spite of my app (ED) constantly trying to ZDO_StartNetworkReq if the state is APP_STARTING_NETWORK_STATE (exactly like in WSNDemo). I waited 10 minutes, and nothing happened. CS_END_DEVICE_SLEEP_PERIOD is 60000.

If I reinit the ED with

Code: [Select]

PDS_DeleteAll(false);
HAL_WarmReset();

it can start the network succesfully.

What would be nice to check for investigate this one?

Thanks!

[ataradov]

You need to wait for ZDO_NETWORK_LEFT_STATUS. ZDO_NETWORK_LOST_STATUS is just a notification that network is lost and stack will attempt to fix stuff. But technically (all the internal states) stack is still in the network.

I'm also pretty sure that ZDO_StartNetworkReq() in that case will return ZDO_INVALID_REQUEST or similar error code.

[danergo]

I see. Thank you.

So it's a very bad design idea from me to use ZDO_StartNetworkReq right after ZDO_NETWORK_LOST_STATUS.

2 questions remained:
1.) if I call ZDO_StartNetworkReq when ZDO_NETWORK_LOST_STATUS is received, is it possible that I prevent the stack to gracefully leave the network and reinit it? (It seems)
2.) The right way seems to do nothing when ZDO_NETWORK_LOST_STATUS is received but wait for ZDO_NETWORK_LEFT_STATUS. Can I be sure that after getting LOST status, also LEFT_STATUS will arrive sooner or later?


Thank you

[ataradov]

1.) if I call ZDO_StartNetworkReq when ZDO_NETWORK_LOST_STATUS is received, is it possible that I prevent the stack to gracefully leave the network and reinit it? (It seems)

I'd need to check the code, but again, I'm pretty sure that ZDO_StartNetworkReq() will be confirmed with an error code and nothing bad will happen, stack will continue doing what it was doing, and ZDO_NETWORK_LEFT_STATUS will be called eventually.

2.) The right way seems to do nothing when ZDO_NETWORK_LOST_STATUS is received but wait for ZDO_NETWORK_LEFT_STATUS. Can I be sure that after getting LOST status, also LEFT_STATUS will arrive sooner or later?

Yes, 100%.

And if you are absolutely don't want to wait, there is ZDO_ResetNetworkReq(). That will bring everything into initial state no matter what stack is doing at the moment. But there should be no reason to use this at all.

[danergo]

Thank you.

I'm totally okay with waiting after ZDO_NETWORK_LOST_STATUS.