Is it possible to see raw extended advertising packets?

RE: Is it possible to see raw extended advertising packets?

Damia — Fri, 20 Aug 2021 09:57:24 GMT

OK thank you a lot!

RE: Is it possible to see raw extended advertising packets?

Simonr — Wed, 18 Aug 2021 10:57:11 GMT

Hi again

I see, I didn't realize you were using the pc-ble-driver. It doesn't matter though, it seems. I dove into the firmware, and it seems you won't be able to get the raw data from Coded PHY advertisements, as it is the SoftDevice who's handling FEC decoding, and you won't be able to get raw data from there. The only way would be to use a Sniffer to tap into the connection and pick up the raw data. Unfortunately, the nRF Sniffer does not support sniffing the secondary advertising channels, so you will need a more expensive option like an Ellisys device or similar.

The other option would be to use the radio peripheral directly, without the SoftDevice, but that is quite a bit of work, and would be up to you I'm afraid.

Best regards,

Simon

RE: Is it possible to see raw extended advertising packets?

Damia — Tue, 17 Aug 2021 13:04:13 GMT

NRF_LOG_MSGPOOL_ELEMENT_SIZE, _COUNT and NRF_LOG_RAW_HEXDUMP_INFO(...) are not defined in the pc-ble-driver I am currently using. Do you recommend me to program an nrf52840 with NRF_LOG_RAW_HEXDUMP_INFO() and log the raw packets to the pc somehow? Is it possible to use a nrf52840 dongle for this or I have to buy a DK?

RE: Is it possible to see raw extended advertising packets?

Simonr — Tue, 17 Aug 2021 12:39:06 GMT

If you're new to the Coded PHY, I would strongly suggest checking out this blog post explaining Coded PHY, what it is, how it's used, and the packet format in detail. What have you set the NRF_LOG_MSGPOOL_ELEMENT_SIZE and _COUNT to in your config header file(s)? This has been an issue previously when trying to log raw extended advertising data: https://devzone.nordicsemi.com/f/nordic-q-a/40367/unable-to-hexdump-complete-extended-advertisement-data

Best regards,

Simon