Issues to build edge-impulse app to thingy53 in zephyr upstream (4.1.99) ncs 3.1.0 in Ubuntu 22.04

[neuberfran]

Hi,

Thingy53 with Zephyr Never appear in nRF Edge Impulse Android App

@vojislav Ok. Maybe I didn’t explain properly what I’m referring to (in my last post) If you see the latest messages of this issue thingy:53 I have damage to the sw2 pin and I am unable to enter the DFU - Nordic Q&A - Nordic DevZone - Nordic DevZone I’m actually having errors getting zephyr 3.7.99 for edge impulse app using west build and west flash with jlink segger mini edu

Continuing the issue above, I’m trying to build the official edge-impulse app for thingy53 on zephyr 4.1.99 and ncs 3.1.0. I’m experiencing the errors below that I hope you can help me resolve:

neuberfran@neuberfran2204:~/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53$ west build -b thingy53/nrf5340/cpuapp

– west build: generating a build system
Loading Zephyr module(s) (Zephyr base): sysbuild_default
– Found Python3: /usr/bin/python3 (found suitable version “3.10.12”, minimum required is “3.10”) found components: Interpreter
– Cache files will be written to: /home/neuberfran/.cache/zephyr
– Found west (found suitable version “1.2.0”, minimum required is “0.14.0”)
– Board: thingy53, qualifiers: nrf5340/cpuapp
Parsing /home/neuberfran/zephyr_thingy53/ncs/zephyr/share/sysbuild/Kconfig
Loaded configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/_sysbuild/empty.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/_sysbuild/empty.conf’
Configuration saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/zephyr/.config’
Kconfig header saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/_sysbuild/autoconf.h’

---

• Running CMake for mcuboot *

---

Loading Zephyr default modules (Zephyr base).
– Application: /home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/boot/zephyr
– CMake version: 3.22.1
– Found Python3: /usr/bin/python (found suitable version “3.10.12”, minimum required is “3.10”) found components: Interpreter
– Cache files will be written to: /home/neuberfran/.cache/zephyr
– Zephyr version: 4.1.99 (/home/neuberfran/zephyr_thingy53/ncs/zephyr)
– Found west (found suitable version “1.2.0”, minimum required is “0.14.0”)
– Board: thingy53, qualifiers: nrf5340/cpuapp
– ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
– Found host-tools: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found toolchain: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found Dtc: /home/neuberfran/zephyr-sdk-0.16.5-1/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version “1.6.0”, minimum required is “1.4.6”)
– Found BOARD.dts: /home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpuapp.dts
– Found devicetree overlay: /home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/boot/zephyr/app.overlay
– Found devicetree overlay: /home/neuberfran/zephyr_thingy53/ncs/nrf/modules/mcuboot/flash_sim.overlay
– Generated zephyr.dts: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot/zephyr/zephyr.dts
– Generated pickled edt: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot/zephyr/edt.pickle
– Generated devicetree_generated.h: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot/zephyr/include/generated/zephyr/devicetree_generated.h

warning: MBEDTLS_CFG_FILE (defined at
/home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/boot/zephyr/Kconfig:490,
/home/neuberfran/zephyr_thingy53/ncs/nrf/subsys/nrf_security/Kconfig:67, modules/mbedtls/Kconfig:59,
modules/mbedtls/Kconfig:59) was assigned the value ‘mcuboot-mbedtls-cfg.h’ but got the value

and/or look up MBEDTLS_CFG_FILE in the menuconfig/guiconfig interface. The Application Development
Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual
might be helpful too.

warning: NCS_APPLICATION_BOOT_BANNER_STRING (defined at
/home/neuberfran/zephyr_thingy53/ncs/nrf/lib/boot_banner/Kconfig:18) was assigned the value
‘MCUboot’ but got the value ‘’. Check these unsatisfied dependencies: NCS_BOOT_BANNER (=n). See

look up NCS_APPLICATION_BOOT_BANNER_STRING in the menuconfig/guiconfig interface. The Application
Development Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of
the manual might be helpful too.

warning: LOG_DEFAULT_LEVEL (defined at subsys/logging/Kconfig.filtering:13) was assigned the value
‘0’ but got the value ‘’. Check these unsatisfied dependencies: LOG (=n). See

LOG_DEFAULT_LEVEL in the menuconfig/guiconfig interface. The Application Development Primer, Setting
Configuration Values, and Kconfig - Tips and Best Practices sections of the manual might be helpful
too.

warning: The choice symbol MCUBOOT_LOG_LEVEL_INF (defined at
subsys/logging/Kconfig.template.log_config:17) was selected (set =y), but no symbol ended up as the

and/or look up MCUBOOT_LOG_LEVEL_INF in the menuconfig/guiconfig interface. The Application
Development Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of
the manual might be helpful too.

warning: The choice symbol LOG_MODE_MINIMAL (defined at subsys/logging/Kconfig.mode:29) was selected
(set =y), but no symbol ended up as the choice selection. See

LOG_MODE_MINIMAL in the menuconfig/guiconfig interface. The Application Development Primer, Setting
Configuration Values, and Kconfig - Tips and Best Practices sections of the manual might be helpful
too.

Parsing /home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/boot/zephyr/Kconfig
Loaded configuration ‘/home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpuapp_defconfig’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/boot/zephyr/prj.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/boot/zephyr/boards/thingy53_nrf5340_cpuapp.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/subsys/partition_manager/ext_flash_mcuboot_secondary.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot/zephyr/.config.sysbuild’
Configuration saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot/zephyr/.config’
Kconfig header saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot/zephyr/include/generated/zephyr/autoconf.h’
– Found GnuLd: /home/neuberfran/zephyr-sdk-0.16.5-1/arm-zephyr-eabi/arm-zephyr-eabi/bin/ld.bfd (found version “2.38”)
– The C compiler identification is GNU 12.2.0
– The CXX compiler identification is GNU 12.2.0
– The ASM compiler identification is GNU
– Found assembler: /home/neuberfran/zephyr-sdk-0.16.5-1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
– Using ccache: /usr/bin/ccache
– Found gen_kobject_list: /home/neuberfran/zephyr_thingy53/ncs/zephyr/scripts/build/gen_kobject_list.py
MCUBoot bootloader key file: /home/neuberfran/zephyr_thingy53/ncs/bootloader/mcuboot/root-rsa-2048.pem
CMake Warning at CMakeLists.txt:412 (message):
WARNING: Using default MCUboot signing key file, this file is for debug use
only and is not secure!

– Configuring done
– Generating done
– Build files have been written to: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/mcuboot

---

• Running CMake for empty_net_core *

---

Loading Zephyr default modules (Zephyr base).
– Application: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/nrf5340/empty_net_core
– CMake version: 3.22.1
– Found Python3: /usr/bin/python (found suitable version “3.10.12”, minimum required is “3.10”) found components: Interpreter
– Cache files will be written to: /home/neuberfran/.cache/zephyr
– Zephyr version: 4.1.99 (/home/neuberfran/zephyr_thingy53/ncs/zephyr)
– Found west (found suitable version “1.2.0”, minimum required is “0.14.0”)
– Board: thingy53, qualifiers: nrf5340/cpunet
– ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
– Found host-tools: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found toolchain: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found Dtc: /home/neuberfran/zephyr-sdk-0.16.5-1/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version “1.6.0”, minimum required is “1.4.6”)
– Found BOARD.dts: /home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpunet.dts
– Generated zephyr.dts: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core/zephyr/zephyr.dts
– Generated pickled edt: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core/zephyr/edt.pickle
– Generated devicetree_generated.h: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core/zephyr/include/generated/zephyr/devicetree_generated.h
Parsing /home/neuberfran/zephyr_thingy53/ncs/zephyr/Kconfig
Loaded configuration ‘/home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpunet_defconfig’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/nrf5340/empty_net_core/prj.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core/zephyr/.config.sysbuild’
Configuration saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core/zephyr/.config’
Kconfig header saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core/zephyr/include/generated/zephyr/autoconf.h’
– Found GnuLd: /home/neuberfran/zephyr-sdk-0.16.5-1/arm-zephyr-eabi/arm-zephyr-eabi/bin/ld.bfd (found version “2.38”)
– The C compiler identification is GNU 12.2.0
– The CXX compiler identification is GNU 12.2.0
– The ASM compiler identification is GNU
– Found assembler: /home/neuberfran/zephyr-sdk-0.16.5-1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
– Using ccache: /usr/bin/ccache
– Found gen_kobject_list: /home/neuberfran/zephyr_thingy53/ncs/zephyr/scripts/build/gen_kobject_list.py
– Configuring done
– Generating done
– Build files have been written to: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/empty_net_core

---

• Running CMake for b0n *

---

Loading Zephyr default modules (Zephyr base).
– Application: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/nrf5340/netboot
– CMake version: 3.22.1
– Found Python3: /usr/bin/python (found suitable version “3.10.12”, minimum required is “3.10”) found components: Interpreter
– Cache files will be written to: /home/neuberfran/.cache/zephyr
– Zephyr version: 4.1.99 (/home/neuberfran/zephyr_thingy53/ncs/zephyr)
– Found west (found suitable version “1.2.0”, minimum required is “0.14.0”)
– Board: thingy53, qualifiers: nrf5340/cpunet
– ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
– Found host-tools: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found toolchain: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found Dtc: /home/neuberfran/zephyr-sdk-0.16.5-1/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version “1.6.0”, minimum required is “1.4.6”)
– Found BOARD.dts: /home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpunet.dts
– Generated zephyr.dts: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n/zephyr/zephyr.dts
– Generated pickled edt: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n/zephyr/edt.pickle
– Generated devicetree_generated.h: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n/zephyr/include/generated/zephyr/devicetree_generated.h
Parsing /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/nrf5340/netboot/Kconfig
Loaded configuration ‘/home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpunet_defconfig’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/nrf5340/netboot/prj.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n/zephyr/.config.sysbuild’
Configuration saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n/zephyr/.config’
Kconfig header saved to ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n/zephyr/include/generated/zephyr/autoconf.h’
– Found GnuLd: /home/neuberfran/zephyr-sdk-0.16.5-1/arm-zephyr-eabi/arm-zephyr-eabi/bin/ld.bfd (found version “2.38”)
– The C compiler identification is GNU 12.2.0
– The CXX compiler identification is GNU 12.2.0
– The ASM compiler identification is GNU
– Found assembler: /home/neuberfran/zephyr-sdk-0.16.5-1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
– Using ccache: /usr/bin/ccache
– Found gen_kobject_list: /home/neuberfran/zephyr_thingy53/ncs/zephyr/scripts/build/gen_kobject_list.py
CMake Warning at /home/neuberfran/zephyr_thingy53/ncs/zephyr/CMakeLists.txt:2232 (message):
__ASSERT() statements are globally ENABLED

– Configuring done
– Generating done
– Build files have been written to: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/b0n

---

• Running CMake for firmware-nordic-thingy53 *

---

Loading Zephyr default modules (Zephyr base).
– Application: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53
– CMake version: 3.22.1
– Found Python3: /usr/bin/python (found suitable version “3.10.12”, minimum required is “3.10”) found components: Interpreter
– Cache files will be written to: /home/neuberfran/.cache/zephyr
– Zephyr version: 4.1.99 (/home/neuberfran/zephyr_thingy53/ncs/zephyr)
– Found west (found suitable version “1.2.0”, minimum required is “0.14.0”)
– Board: thingy53, qualifiers: nrf5340/cpuapp
– ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
– Found host-tools: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found toolchain: zephyr 0.16.5 (/home/neuberfran/zephyr-sdk-0.16.5-1)
– Found Dtc: /home/neuberfran/zephyr-sdk-0.16.5-1/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version “1.6.0”, minimum required is “1.4.6”)
– Found BOARD.dts: /home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpuapp.dts
– Found devicetree overlay: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/boards/thingy53_nrf5340_cpuapp.overlay
node ‘/soc/peripheral@50000000/i2c@9000/vm3011@60’ compatible ‘vesper,vm3011’ has unknown vendor prefix ‘vesper’
– Generated zephyr.dts: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/firmware-nordic-thingy53/zephyr/zephyr.dts
– Generated pickled edt: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/firmware-nordic-thingy53/zephyr/edt.pickle
– Generated devicetree_generated.h: /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/firmware-nordic-thingy53/zephyr/include/generated/zephyr/devicetree_generated.h

warning: Deprecated symbol BOARD_ENABLE_CPUNET is enabled.

/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/prj.conf:65: warning: attempt to assign the value ‘y’ to the undefined symbol BUILD_VERBOSE
Parsing /home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/Kconfig
Loaded configuration ‘/home/neuberfran/zephyr_thingy53/ncs/zephyr/boards/nordic/thingy53/thingy53_nrf5340_cpuapp_defconfig’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/prj.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/boards/thingy53_nrf5340_cpuapp.conf’
Merged configuration ‘/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/firmware-nordic-thingy53/zephyr/.config.sysbuild’

error: Aborting due to Kconfig warnings

CMake Error at /home/neuberfran/zephyr_thingy53/ncs/zephyr/cmake/modules/kconfig.cmake:377 (message):
command failed with return code: 1
Call Stack (most recent call first):
/home/neuberfran/zephyr_thingy53/ncs/nrf/cmake/modules/kconfig.cmake:83 (include)
/home/neuberfran/zephyr_thingy53/ncs/zephyr/cmake/modules/zephyr_default.cmake:131 (include)
/home/neuberfran/zephyr_thingy53/ncs/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
/home/neuberfran/zephyr_thingy53/ncs/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
CMakeLists.txt:50 (find_package)

– Configuring incomplete, errors occurred!
CMake Error at cmake/modules/sysbuild_extensions.cmake:530 (message):
CMake configure failed for Zephyr project: firmware-nordic-thingy53

Location:
/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53
Call Stack (most recent call first):
cmake/modules/sysbuild_images.cmake:43 (ExternalZephyrProject_Cmake)
cmake/modules/sysbuild_default.cmake:21 (include)
/home/neuberfran/zephyr_thingy53/ncs/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:75 (include)
/home/neuberfran/zephyr_thingy53/ncs/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
/home/neuberfran/zephyr_thingy53/ncs/zephyr/share/sysbuild-package/cmake/SysbuildConfig.cmake:8 (include)
template/CMakeLists.txt:10 (find_package)

– Configuring incomplete, errors occurred!
See also “/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build/CMakeFiles/CMakeOutput.log”.
FATAL ERROR: command exited with status 1: /usr/bin/cmake -DWEST_PYTHON=/usr/bin/python3 -B/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53/build -GNinja -DBOARD=thingy53/nrf5340/cpuapp -S/home/neuberfran/zephyr_thingy53/ncs/zephyr/share/sysbuild -DAPP_DIR:PATH=/home/neuberfran/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53
neuberfran@neuberfran2204:~/zephyr_thingy53/ncs/nrf/samples/edge_impulse/firmware-nordic-thingy53$

[neuberfran]

@vojislav Hi, Pls help-me with this issue here Pls bro

[Felipe_Yoshino]

Hey @neuberfran , it seems everything were okay until it reaches your device and try to configure the net core.

• Verify if the the Edge Impulse settings matches the hardware.

Since the Thingy53 does not have an on board programmer, the firmware must be flashed in the bootloader mode over USB. To do that, accordingly to its user guide, find the small secondary push button on the thingy, turn the device off, press and keep holding this button while turning the power switch on again. It will make the PC to recognize it in boot mode. Open nRF connect for Desktop, launch the programmer GUI, then find the DFU zip file in your build folder from your project. Drag and drop this zip file to the programmer GUI, verify it has been loaded, then program it. After programming, you can ignore the 2min delay time.

If you are already familiar with this method and are confident the setup is okay, then try to modify the following on vs code:

nRF Connect ->Applications → your_project → build
Open the build configurations → board target.

For the thingy53, there are the thingy53/nrf5340/cpuapp and the thingy53/nrf5340/cpuapp/ns
Try both examples.

Before trying to bypass the bootloader, if nothing of the previously steps works, create a complete new project by using a sample code, and try the blinky example to validate the hardware.

If none of above solve this issue, then you may need another dev kit or programmer to flash it directly in the nRF5340 SoC. Connect it and run the command: nrfutil device recover.

I hope this helps.

[neuberfran]

@Felipe_Yoshino
Thanks but it really won’t be an easy job (putting the edge-impulse app for thingy53 on zephyr upstream)

The topic refers to Ubuntu 22.04, but I’ve already tried it on Windows 11 with NRF Connect (etc), Zephyr 4.1.99 and NCS 3.1.0 and I also got errors.

Some explanations are necessary here:

1. I already did the famous blink led on thingy53 last week here on ubuntu and zephyr 4.1.99 (ncs 3.1.0)
2. I’ve also used the edge-impulse app on this thingy53 successfully (registered on the app/Android phone, collected data, etc…) but on ncs 2.4.0 (I’m not sure) and the role was big because, as shown in the screen below, I had to use docker (the edge-impulse tutorial explains better) etc…

I would like you to clone the code below and try to build it either on Windows or Ubuntu 22.04 or 24.04 (using zephyr upstream and ncs 3.1.0) and show me if it works and how you resolved the errors:

GitHub - edgeimpulse/firmware-nordic-thingy53: Official Edge Impulse firmware...

Note: below is the photo I referred to:

[yakoubpy]

i did have issues with thingy 53 in 3.1.0 so i did go back to 2.6.2 and its working fine

[neuberfran]

@yakoubpy Do u stay talking about thingy53 app tô edgeimpulse?

[neuberfran]

I stay tying too with 2.6.2 but I prefer 3.1