Distance measurement build error on custom board

[Shuhao Dong]

Hello, we are trying to use the distance measurement module and we are following the sample code from sdv v3.0.2. The build process for nrf5340dk and nrf52840dk works well. But when we tried to implement similar configurations and devicetree overlay files to our own custom board, which also uses nrf5340 and use Thingy53 as a reference design, we always fail to build ipc_radio with the following error:

/opt/nordic/ncs/v3.0.2/nrf/subsys/dm/rpc/host/dm_rpc_host.c: In function 'ipc_init':
/opt/nordic/ncs/v3.0.2/zephyr/include/zephyr/device.h:96:41: error: '__device_dts_ord_DT_N_NODELABEL_ipc1_ORD' undeclared (first use in this function)

What we did is simply copy the cpuapp.conf and cpunet.overlay to our own project, and added the sample's prj.conf under ipc_radio folder to our ipc_radio.conf. Although we did not need any GPIO debug function so we deleted that bit. 

Also, because we have mcuboot built as well, we added the two lines of code in our mcuboot.conf:

CONFIG_RPMSG_NRF53_SRAM_SIZE=0
CONFIG_IPC_SERVICE_RPMSG=n

Otherwise the partition manager will complain about different size defined by our static partition.

Can anyone help with this issue?

[Amanda Hsieh]

Hi, 

It seems it's missing the IPC node in your device tree. 

The IPC is defined in the zephyr/dts/arm/nordic/nrf5340_cpunet.dtsi included by dts/arm/nordic/nrf5340_cpunet_qkaa.dtsi and enabled in thingy53_nrf5340_cpunet.dts. Please check your board file for the IPC setting. 

Regards,
Amanda H.

[Shuhao Dong]

Thanks Amanda. I think we have these files for our board. We found the solution: Previously we use ipc_radio.conf under sysbuild directory to configure ipc_radio firmware, which is fine. But as soon as we added a network core overlay under sysbuild, the error shows. But after we created a new directory called ipc_radio and place everything related into that folder, the problem is solved!