bt_hci_core: No HCI driver registered on thingy91_nrf52840

[Adarsh__R]

I have been following the NCS BLE tutorial part 1: Custom Service in Peripheral role - Getting Started - nRF Connect SDK guides - Nordic DevZone (nordicsemi.com) for BLE and wanted to run on thingy91_nrf52840.My whole plan is to get data from cloud using 9160 and communicate to 52840 using uart and  then communicating from 52840 to devices via BLE.I was able to implement first part (cloud-->nrf9160--->nrf52840).Now when I run the sample code from the tutorial,I get the error " <err> bt_hci_core: No HCI driver registered" on thingy91_nrf52840.What could be reason and how to solve this issue ?

[Simon]

Check out this https://github.com/jtguggedal/fw-nrfconnect-zephyr/commit/f41496cd30d5cde824e2fd6379edaed6dd50e31f 

You can also take a look at the LTE Sensor Gateway sample, which should help you with achieving the following: cloud-->nrf9160--->nrf52840.

By the way, this sample is made for the nRF9160DK and does not work out-of-the-box for the Thing:91.

Here are some threads that may be useful regarding getting the sample to work for the Thingy:91

https://devzone.nordicsemi.com/f/nordic-q-a/57635/thingy-91-lte-ble-gateway-sample

https://devzone.nordicsemi.com/f/nordic-q-a/52689/nrf9160-lte-sensor-gateway-on-thingy-91/225659#225659 (this thread is quite old, and you'll need to modify the patches for it to work with NCS v1.5.0)

Please get back to me if you're encountering issues.

Best regards,

Simon

[Adarsh__R]

Thanks for the reply :)  Sensor Gateway sample uses hci_lpuart on nrf52840.So only the link layer and physical layer is on 52840.I needed to run the whole BLE application on the chip.Thats why I choose to uart for communicating between 9160 and 52840 and then using 52840 according to my usecase. I have the uart working between the chips. Anyway I made that sample BLE code to work with thingy91_nrf52840 by adding  CONFIG_BT_HCI=y,CONFIG_BT_CTLR=y in prj.conf

[Simon]

Nice, I'm glad you got it working.