Hi, we want to evaluate the BLE ISP2454-LX chip.
To do this we bought from RUTRONIK FRANCE an ISP2454-LX-EB evaluation board with the ISP2454-LX-TB test board.
SDK : nRF Connect SDK Bare Metal v1.0.0
Tool Chain : nRF Connect SDK Toolchain v3.2.0
Softdevice : 
Application ble_nus works fine.
Now we want to test power down mode and wakeup by gpio function.
Application system_off gives us an example. But the application can not compile in Bare Metal environnement.
I don't know why.
The goal is to integrate power down mode and wakeup by gpio function in the ble_nus application.
So I added to the project configuration :
# Enable POWEROFF
CONFIG_PM_DEVICE=y
CONFIG_POWEROFF=y
# Enable HW INFO
CONFIG_HWINFO=y
# Enable GPIO
CONFIG_GPIO=y
This does not compile, because there is no gpio referenced in the Device Tree generated by the build.
So my question is : how can I activate gpios in the Device tree and why they are not activated with CONFIG_GPIO=y ?
Thanks.
Best Regards.
Andre MULLER