Only getting advertisement using nRF51 sniffer (nrf v.2-beta)

RE: Only getting advertisement using nRF51 sniffer (nrf v.2-beta)

bjorn-spockeli — Mon, 30 Jul 2018 14:31:08 GMT

Yes, you will simply have to perform the capture again if you do not see the connetion request packet.

Best regards

Bjørn

RE: Only getting advertisement using nRF51 sniffer (nrf v.2-beta)

einarmar — Mon, 30 Jul 2018 13:30:18 GMT

Hi Bjorn and thank you for your response.

It seems so that this happens occasionally.
Is that maybe normal, i.e. the sniffer missing out on the connect packet and therefore unable to latch on to the hopping sequenced thereafter ?
If so I guess I'll just have to be patient with it

regards
Einar

RE: Only getting advertisement using nRF51 sniffer (nrf v.2-beta)

bjorn-spockeli — Thu, 26 Jul 2018 11:56:46 GMT

Hi Einar,

is this consistent, i.e. you're not able to see data packets when the two devices are in a connection even if you disconnect and re-connect multiple times, or is occasionally?

I have observed that occasionally the connection request packet might not be intercepted properly by the sniffer and you then lose the connection because you do not know which channels to jump to or the conenction interval etc. This is usually solved by disconnecting and then reconnecting the two devices. Have you followed the instructions in the nRF Sniffer v2 User Guide, i.e.

Sniffing a connection involving a single slave device

To sniff a connection between a specific Peripheral device and a Central:

1. Start the Sniffer if not already running.

2. In the Sniffer, choose the device from the Device drop-down list.

3. Connect the Central to the Peripheral.

Best regards

Bjørn