EmberZNet

In terms of the register-based configuration of the Sleep Timer on the EM250 platform, this is very much like using the two general-purpose user timers (Timer1 and Timer2), just with a much smaller set of registers and configuration options…

The stack does not take control of your device to make it decide to join a network; it does not know how often you wish to retry joining (as this will consume battery power and bandwidth) or if you wish to abort the joining process completely and leave the network to try a new scan, or try a new node type.

Basically, the process should happen like this in a typical application:

• Device calls emberNetworkInit() after reboot.
• If device was previously part of a network, NetworkInit returns EMBER_SUCCESS; otherwise, it returns EMBER_NOT_JOINED.

In emberGetLastHopRssi() the RSSI value is of data type int8s, which is the RSSI energy level in dBm.

In emberEnergyScanResultHandler() the RSSI value is of data type int8u. This is the raw RSSI value straight from the radio, which is offset by -154 from the actual dBm value measured.  So take your unsigned 8-bit result, subtract 154 from that, and that is the RSSI energy level in dBm for that channel.

The number of concentrators is limited by the number of routing entries all devices have available to use for many-to-one entries and how often these concentrators send many-to-one route requests.

The many-to-one route requests are broadcasts and the aggregate rate of these must not be larger than the discovery table can handle, and you really want the rate to be much less that this, as broadcasts will affect the throughput of the network. These route entries do time out and (just like normal table routes) become replaceable if not used.

I am using security in my network (my key is all 0's) and when my device attempts to join the network, it is successful but then cannot talk to the other devices.

The stack does not support security keys of all 0's. This will cause the behavior indicated above. The only fix is to change to a non-zero security key.