Where to see incoming data on NRF Connect app?

RE: Where to see incoming data on NRF Connect app?

run_ar — Wed, 17 Mar 2021 12:50:04 GMT

What kind of data are you sending from the peripheral? Could you share the log file? I would expect seeing something like this whenever a notification is received from the peripheral:

didUpdateValueForCharacteristic: 2A37, error: nil) Value of Characteristic 2A37 updated to 0x16-A0-51-01-50-01-4F-01-4E-01-4D-01-4C-01-4B-01-4A-01-49-01-48-01-47-01-46-01-45-01-44-01-43-01-42-01-41-01-40-01

RE: Where to see incoming data on NRF Connect app?

nordev — Wed, 10 Mar 2021 19:18:19 GMT

Nope, nothing. I turned on and off scroll lock. I tried with an iphone SE with nrf 2.4.8, and an iPad with the same version.

RE: Where to see incoming data on NRF Connect app?

run_ar — Wed, 10 Mar 2021 07:15:07 GMT

As far as I can see logging is turned on by default. (I am on an iPhone 11 using nrf connect 2.4.8, with the hrm example from the nrf5 SDK v17.0.2.) but I have to disable scroll lock at the bottom right corner for the view to update, did you try that?

RE: Where to see incoming data on NRF Connect app?

nordev — Wed, 10 Mar 2021 00:46:35 GMT

the sniffer doesn't work so well here, because the data is all encrypted between the two devices.

The logs seem to only tell me that I sent a value from NRF Connect to the Characteristic, but I don't see any data coming back (it would come back on a different characteristic). It is definitely being sent though. I see [encrypted] data packets being exchanged between master and slave, and I am able to receive the actual data via a custom app. Do I have to turn something special on inside the Nordic app in order to see the data in logs?

RE: Where to see incoming data on NRF Connect app?

run_ar — Tue, 09 Mar 2021 13:50:01 GMT

Hi,

nRF connect has a log feature where you can see data arriving from the peer. It's possible to configure the filter to only log data for connected devices. As an alternative you could also use nrf sniffer to monitor the on air traffic.