Issue setting NFC_OOB_PAIRING config option in prj.conf for peripheral_hids_keyboard sample application

RE: Issue setting NFC_OOB_PAIRING config option in prj.conf for peripheral_hids_keyboard sample application

ovrebekk — Thu, 02 Feb 2023 11:36:37 GMT

Hi Duncan

Sounds good. If you have any more questions or comments just let me know.

Best regards
Torbjørn

RE: Issue setting NFC_OOB_PAIRING config option in prj.conf for peripheral_hids_keyboard sample application

DunKCubik — Wed, 01 Feb 2023 15:17:55 GMT

Hi Torbjørn, thanks very much for your quick reply. I'll add what you suggested to my overlay file and try it again.

Thanks again.

Duncan

RE: Issue setting NFC_OOB_PAIRING config option in prj.conf for peripheral_hids_keyboard sample application

ovrebekk — Wed, 01 Feb 2023 15:01:43 GMT

Hi Duncan

I reproduced the issue you are facing, and it lead me down a bit of a rabbit hole.

It seems the NFC peripheral is disabled by default in the various nRF52 DK board files, even though they all have the necessary hardware to support NFC.

Normally this would lead to an error further down the line when trying to use the NFC peripheral, but apparently the NFC driver only checks whether or not NFC is enabled in the project configuration (Kconfig), and doesn't care about the hardware configuration in the device tree.
This is the reason all the samples in the nrf/samples/nfc folder work.

In the case of the peripheral_hids_keyboard sample this is not enough, since the NFC_OOB_PAIRING configuration explicitly requires the HAS_HW_NRF_NFCT configuration to be in place, and this in turn depends on whether or not NFC is enabled in the device tree.

The short term fix is to make sure the NFC peripheral is enabled in the device tree by adding the following to your overlay file:

&nfct {
	status="ok";
};

I have reported the issue to the developers, and in the future we should issue an update that would fix the underlying issue as described above.

Best regards
Torbjørn

RE: Issue setting NFC_OOB_PAIRING config option in prj.conf for peripheral_hids_keyboard sample application

DunKCubik — Tue, 31 Jan 2023 12:04:53 GMT

Sorry forgot to add build info etc..

--- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: C:/Nordic/myapps/peripheral_hids_keyboard
-- Found Python3: C:/ncs/toolchains/v2.1.0/opt/bin/python.exe (found suitable exact version "3.8.2") found components: Interpreter
-- Cache files will be written to: C:/ncs/v2.1.0/zephyr/.cache
-- Zephyr version: 3.1.99 (C:/ncs/v2.1.0/zephyr)
-- Found west (found suitable version "0.14.0", minimum required is "0.7.1")
-- Board: nrf52840dk_nrf52840
-- Found host-tools: zephyr 0.14.1 (C:/ncs/toolchains/v2.1.0/opt/zephyr-sdk)
-- Found dtc: C:/ncs/toolchains/v2.1.0/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6")
-- Found toolchain: zephyr 0.14.1 (C:/ncs/toolchains/v2.1.0/opt/zephyr-sdk)
-- Found BOARD.dts: C:/ncs/v2.1.0/zephyr/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840.dts
-- Generated zephyr.dts: C:/Nordic/myapps/peripheral_hids_keyboard/build/zephyr/zephyr.dts
-- Generated devicetree_unfixed.h: C:/Nordic/myapps/peripheral_hids_keyboard/build/zephyr/include/generated/devicetree_unfixed.h
-- Generated device_extern.h: C:/Nordic/myapps/peripheral_hids_keyboard/build/zephyr/include/generated/device_extern.h
-- Including generated dts.cmake file: C:/Nordic/myapps/peripheral_hids_keyboard/build/zephyr/dts.cmake
Parsing C:/Nordic/myapps/peripheral_hids_keyboard/Kconfig
Loaded configuration 'C:/ncs/v2.1.0/zephyr/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840_defconfig'
Merged configuration 'C:/Nordic/myapps/peripheral_hids_keyboard/prj.conf'
Configuration saved to 'C:/Nordic/myapps/peripheral_hids_keyboard/build/zephyr/.config'
Kconfig header saved to 'C:/Nordic/myapps/peripheral_hids_keyboard/build/zephyr/include/generated/autoconf.h'
-- The C compiler identification is GNU 10.3.0
-- The CXX compiler identification is GNU 10.3.0
-- The ASM compiler identification is GNU
-- Found assembler: C:/ncs/toolchains/v2.1.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc.exe
CMake Warning at C:/ncs/v2.1.0/zephyr/CMakeLists.txt:1839 (message):
__ASSERT() statements are globally ENABLED