HCI won't work after enabling external_flash_pins_routing

[Schmid]

Hello, im working with the nRF9160 DK 1.1.0 and need to use LTE, BLE over HCI and the external Flash for FOTA Updates. (Connect SDK 2.4)

When I enable external_flash_pins_routing in hci_lpuart, the flash will work but I get the following error on the 9160:

ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:330 command opcode 0x0c03 timeout with err -11

I guess HCI isn't working anymore when the pin for external flash is enabled.
Has anyone encountered something like that before?

Greetings,

Philipp

[Schmid]

After further testing I realised that the error has nothing to do with the flash_pin but with the revision 1.1.0 build.
Building hci_lpuart with any revision applied results in the error:

ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:330 command opcode 0x0c03 timeout with err -11

on the 9160 side

[Sigurd]

Hi,

Make sure to build both with the correct revision.

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/device_guides/working_with_nrf/nrf91/nrf9160.html#board-revisions

[email protected] and

[email protected]

Also include an overlay like this for your nrf9160 application:

https://github.com/nrfconnect/sdk-nrf/blob/v2.4.1/samples/nrf9160/lte_ble_gateway/boards/nrf9160dk_nrf9160_ns_0_14_0.overlay

[Schmid]

This line in the Overlays fixed it, thanks
#include <nrf9160dk_nrf52840_reset_on_if9.dtsi>