Distinguishing between Zigbee pairing states?

[mytzyiay]

To provide feedback to the user through the LED state, I would like the behavior to be something like this:

• If the nRF52840 Zigbee device is unpaired and ready for a ZC to add it, flash the blue LED
• If it is paired but it's still searching for its parent node (or if it has lost connectivity after previously talking to other nodes), flash the red LED
• If it is paired and it is successfully connected to the network, keep the green LED on solid

I have been looking at the messages arriving through zboss_signal_handler() but I don't understand how to differentiate between these cases.  What should I watch for, and is there an example that demonstrates it?

My app implements a Zigbee on/off switch and it is set up to be a router node.

[mytzyiay]

This seems to work for me so far.  What logic do I need to add in order to keep it from counting children of my router node?

static bool has_active_neighbors = false;

static void check_neighbors(zb_uint8_t bufid);

static void neighbor_check_cb(zb_uint8_t bufid)
{
 zb_nwk_nbr_iterator_params_t *args = ZB_BUF_GET_PARAM(bufid, zb_nwk_nbr_iterator_params_t);
 has_active_neighbors = args->index != ZB_NWK_NBR_ITERATOR_INDEX_EOT;

 ZB_SCHEDULE_APP_ALARM(check_neighbors, bufid, ZB_MILLISECONDS_TO_BEACON_INTERVAL(1000));
}

static void check_neighbors(zb_uint8_t bufid)
{
 zb_ret_t error_code;

 if (bufid == ZB_BUF_INVALID) {
 error_code = zb_buf_get_out_delayed_func(check_neighbors);
 ZB_ASSERT(error_code == RET_OK);
 return;
 }

 zb_nwk_nbr_iterator_params_t *args = ZB_BUF_GET_PARAM(bufid, zb_nwk_nbr_iterator_params_t);
 args->update_count = 0;
 args->index = 0;

 error_code = zb_nwk_nbr_iterator_next(bufid, neighbor_check_cb);
 ZB_ASSERT(error_code == RET_OK);
}

static void schedule_neighbor_check(void)
{
 ZB_SCHEDULE_APP_CALLBACK(check_neighbors, ZB_BUF_INVALID);
}

[Marte Myrvold]

Hi,

That is good to hear!

mytzyiay said:

What logic do I need to add in order to keep it from counting children of my router node

You can use either the device_type field of zb_nwk_nbr_iterator_entry_t to check if the device is an end device, or the relationship field to check if it is a child. 

Device type	The type of the neighbor device: 0x00 = ZigBee coordinator 0x01 = ZigBee router 0x02 = ZigBee end device 0x03 = Unknown
Relationship	The relationship between the neighbor and the current device: 0x00 = neighbor is the parent 0x01 = neighbor is a child 0x02 = neighbor is a sibling 0x03 = None of the above 0x04 = previous child

Best regards,

Marte