Zigbee coordinator with nRF52840 does not receive Ember beacon request from several radio channels

[GiacomoPaci]

Hello,

We developed a zigbee coordinator with nRF52840.

We discovered that our coordinator is not receiving the the beacon request coming from some Ember based sleepy and devices.

We are seeing that Ember based devices are sending the beacon request using the TI sniffer, however we are not see any packet receive by nRF52840 IEEE802.15.4 stack.

Can you give us some advice?

Can we set in a different way the radio to also receive those beacon request?

Best regards

Giacomo 

[Elfving]

Hello again,

Is this a custom nRF52840 board that you are using? And if so, have you gotten the hardware reviewed? Are you seeing the same issue with a DK?

Is the coordinator sw you are running based on our Network coordinator sample?

Regards,

Elfving

[GiacomoPaci]

Hello Elfving,

We develop the coordinator code starting from your coordinator sample, the hw is the Raytac module MQBT50Q-P1MV2.

Best regards.

Giacomo

[Elfving]

I see.

Are you sure that you are sending the beacon and sniffing on the same channel that the coordinator is on? The default channel is 16.

And are you seeing anything in the log? And have you tested with other devices?

Regards,

Elfving

[GiacomoPaci]

Hello,

Yes I am sure the beacon is sniffed and sent to the coordinator channel.

I can not see anything coming from IEEE802.15.4

Yes  We tried with other sleepy end devices and works properly, only with those one with Ember have issue in some channels, like channel 11,12,13,14,15,16,17,18

[Elfving]

That is odd, I am not really seeing the issue why this should be a problem. 

Could you upload a sniffer log of it as a pcap file? And what SDK are you using?

Regards,

Elfving