error: undefined reference to `__device_dts_ord_141'

[anonym943]

Hi, i am trying to use stream_flash to build a sample read_write application to understand how it works. i get undefined reference to `__device_dts_ord_141' error while trying to build the application. i have added an overlay file to define partition to flash0 and also tried following the steps in trouble shooting guide https://docs.zephyrproject.org/latest/build/dts/troubleshooting.html but i get the same error everytime. i am new to zephyr and trying to figure out how devicetree works here.

terminal output-
FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map C:/workspace/build/zephyr/zephyr_pre0.map
C:\WINDOWS\system32\cmd.exe /C "cd . && C:\PROGRA1\ZEPHYR1.5\ARM-ZE1\bin\AR14451.EXE -gdwarf-4 zephyr/CMakeFiles/zephyr_pre0.dir/misc/empty_file.c.obj -o zephyr\zephyr_pre0.elf zephyr/CMakeFiles/offsets.dir/./arch/arm/core/offsets/offsets.c.obj -T zephyr/linker_zephyr_pre0.cmd -Wl,-Map=C:/workspace/build/zephyr/zephyr_pre0.map -Wl,--whole-archive app/libapp.a zephyr/libzephyr.a zephyr/arch/common/libarch__common.a zephyr/arch/arch/arm/core/libarch__arm__core.a zephyr/arch/arch/arm/core/cortex_m/libarch__arm__core__cortex_m.a zephyr/arch/arch/arm/core/cortex_m/cmse/libarch__arm__core__cortex_m__cmse.a zephyr/arch/arch/arm/core/mpu/libarch__arm__core__mpu.a zephyr/lib/libc/picolibc/liblib__libc__picolibc.a zephyr/lib/libc/common/liblib__libc__common.a zephyr/drivers/interrupt_controller/libdrivers__interrupt_controller.a zephyr/drivers/clock_control/libdrivers__clock_control.a zephyr/drivers/console/libdrivers__console.a zephyr/drivers/flash/libdrivers__flash.a zephyr/drivers/gpio/libdrivers__gpio.a zephyr/drivers/pinctrl/libdrivers__pinctrl.a zephyr/drivers/reset/libdrivers__reset.a zephyr/drivers/serial/libdrivers__serial.a zephyr/drivers/timer/libdrivers__timer.a modules/hal_stm32/stm32cube/lib..__modules__hal__stm32__stm32cube.a -Wl,--no-whole-archive zephyr/kernel/libkernel.a -LC:/workspace/build/zephyr zephyr/arch/common/libisr_tables.a -mcpu=cortex-m33 -mthumb -mabi=aapcs -mfp16-format=ieee -mtp=soft -fuse-ld=bfd -Wl,--gc-sections -Wl,--build-id=none -Wl,--sort-common=descending -Wl,--sort-section=alignment -Wl,-u,_OffsetAbsSyms -Wl,-u,_ConfigAbsSyms -nostdlib -static -Wl,-X -Wl,-N -Wl,--orphan-handling=warn -Wl,-no-pie -specs=picolibc.specs -DPICOLIBC_LONG_LONG_PRINTF_SCANF -L"c:/program file:\Program Files\CMake\bin\cmake.exe" -E true""
c:/progra1/zephyr1.5/arm-ze~1/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: app/libapp.a(main.c.obj): in function main': C:/workspace/platform_sed/samples/storage/stream_flash/read_write/src/main.c:149: undefined reference to __device_dts_ord_141'
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'C:\Program Files\CMake\bin\cmake.EXE' --build 'C:\workspace\build'

overlay file(nucleo_h563zi.overlay)-
/ {
chosen {
zephyr,flash-controller = &flash0;
};
};

&flash0 {
status="okay";
partitions {
stream_flash_partition: partition@c0000 {
label = "stream_flash";
reg = <0x0C0000 0x040000>; /* Offset and size (256 KB) */
};
};
};

devicetree_generated.h-

• 139 /soc/ethernet@40028000/mdio/ethernet-phy@0
• 140 /soc/flash-controller@40022000
• 141 /soc/flash-controller@40022000/flash@8000000
• 142 /soc/flash-controller@40022000/flash@8000000/partitions
• 143 /soc/flash-controller@40022000/flash@8000000/partitions/partition@0

prj.conf file-
CONFIG_FLASH=y
CONFIG_STREAM_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3

board used- stm32 nucleo_h563zi

[github-actions[bot]]

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[JarmouniA]

@anonym943 use zephyr,flash with flash0 instead of flash-controller
https://docs.zephyrproject.org/latest/build/dts/api/api.html#chosen-nodes

[JarmouniA]

To set the flash-controller node as chosen, you need to define an alias for it 1st here

zephyr/dts/arm/st/h5/stm32h563Xi.dtsi

Line 12 in 1903a8f

flash-controller@40022000 {

like this

		flash_controller: flash-controller@40022000 {
			flash0: flash@8000000 {
				reg = <0x08000000 DT_SIZE_M(2)>;
			};
		};

then assign the alias phandle to chosen :
zephyr,flash-controller = &flash_controller.

[anonym943]

works perfectly fine now! thanks for that