I attach the sketch I use with the Nano RP2040 Connect board.
I turned on logging in the BLE part of the sketch.
This is what I get in the serial monitor
16:48:19.201 -> Received numClasses: 5
16:48:19.320 -> Received numSamples: 25
16:48:19.440 -> Received threshold: 0.1810
16:48:19.561 -> Received delay: 30
16:48:19.684 -> Received disableMagnetometer: 1
16:48:19.771 -> state is now FILE_TRANSFER
16:48:19.771 -> Received state: 2
16:48:19.811 -> Connected to central: 98:54:1b:48:79:4c
16:48:19.971 -> Received fileTransferType: 0
If I run the sketch for the Nano BLE 33 Sense with logging enabled, i get this output
16:43:08.145 -> Received numClasses: 5
16:43:08.273 -> Received numSamples: 25
16:43:08.401 -> Received threshold: 0.1810
16:43:08.537 -> Received delay: 30
16:43:08.625 -> Received disableMagnetometer: 1
16:43:08.745 -> state is now FILE_TRANSFER
16:43:08.745 -> Received state: 2
16:43:08.745 -> Connected to central: 98:54:1b:48:79:4c
16:43:08.881 -> Received fileTransferType: 0
16:43:09.529 -> Data received: length = 128
16:43:54.582 -> reloading model
16:43:54.582 -> done reloading model
I miss the "Data Received" log entries when I use the Nano RP2040 Connect.
The Nano BLE 33 Sense sketch is available at the web site.
Thanks for taking a closer look at the problem,
PS: When I try to upload the zip archive, I get a warning
"Entschuldige, neue Benutzer dürfen keine Dateien hochladen"
So let me upload each single source code file, 7 total.
Again, I get a message
"Entschuldige, neue Benutzer können Beiträgen höchstens 2 Links hinzufügen."
So what shall I do? Stop this (nonsense) or smile?
Let's stop this journey for now, I can't upload files.
I come back to you when I have the required permissions.