Using Edge Impulse Wrapper

[Vitalacy Guy]

I've created an edge impulse model and downloaded it directly from edge impulse (as outlined in https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_edge_impulse.html#downloading-model-directly-from-edge-impulse-studio) and used edge_impulse_wrapper example to integrate it into my project When I build the project it repeats performing the configure step for 'edge_impulse_project' and does not stop unless manually canceled. 

[234/303] Building C object zephyr/arch/arch/arm/core/aarch32/cortex_m/CMakeFiles/arch__arm__core__aarch32__cortex_m.dir/thread_abort.c.obj
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[241/303] Linking C static library zephyr/lib/libc/newlib/liblib__libc__newlib.a
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[265/303] Performing configure step for 'edge_impulse_project'
-- The C compiler identification is GNU 12.1.0
-- The CXX compiler identification is GNU 12.1.0
-- Checking whether C compiler has -isysroot
-- Checking whether C compiler has -isysroot - yes
-- Checking whether C compiler supports OSX deployment target flag
-- Checking whether C compiler supports OSX deployment target flag - no
-- Checking whether CXX compiler has -isysroot
-- Checking whether CXX compiler has -isysroot - yes
-- Checking whether CXX compiler supports OSX deployment target flag
-- Checking whether CXX compiler supports OSX deployment target flag - no
-- The ASM compiler identification is GNU
-- Found assembler: /opt/nordic/ncs/toolchains/v2.2.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/ian/projects/dsp_zephyr/build_debug/edge_impulse/src/edge_impulse_project-build
[265/303] Performing build step for 'edge_impulse_project'
[0/1] Re-running CMake...
-- Checking whether C compiler has -isysroot
-- Checking whether C compiler has -isysroot - yes
-- Checking whether C compiler supports OSX deployment target flag
-- Checking whether C compiler supports OSX deployment target flag - no
-- Checking whether CXX compiler has -isysroot
-- Checking whether CXX compiler has -isysroot - yes
-- Checking whether CXX compiler supports OSX deployment target flag
-- Checking whether CXX compiler supports OSX deployment target flag - no
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/ian/projects/dsp_zephyr/build_debug/edge_impulse/src/edge_impulse_project-build
[0/1] Re-running CMake...
-- Checking whether C compiler has -isysroot
-- Checking whether C compiler has -isysroot - yes
-- Checking whether C compiler supports OSX deployment target flag
-- Checking whether C compiler supports OSX deployment target flag - no
-- Checking whether CXX compiler has -isysroot
-- Checking whether CXX compiler has -isysroot - yes
-- Checking whether CXX compiler supports OSX deployment target flag
-- Checking whether CXX compiler supports OSX deployment target flag - no
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/ian/projects/dsp_zephyr/build_debug/edge_impulse/src/edge_impulse_project-build

I'm not sure how this happened since it was compiling normally with the first few version of the ml model.

The project uses nRF Connect SDK v2.2.0 and the included toolchain (/ncs/toolchains/v2.2.0) 

Here's the prj.conf i have for it currently, let me know if additional information is needed

# Enable Edge Impulse dependencies
CONFIG_CPLUSPLUS=y
CONFIG_STD_CPP11=y
CONFIG_LIB_CPLUSPLUS=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_FP16=n

# Enable Matrix operations
CONFIG_CMSIS_DSP=y
CONFIG_CMSIS_DSP_MATRIX=y

# Multithreading
CONFIG_MULTITHREADING=y

# Edge Impulse for ML
CONFIG_EDGE_IMPULSE=y
CONFIG_EDGE_IMPULSE_DOWNLOAD_ALWAYS=n
CONFIG_EDGE_IMPULSE_URI="ml_dispense_64-v27.zip"

CONFIG_EI_WRAPPER=y
CONFIG_EI_WRAPPER_DATA_BUF_SIZE=256
CONFIG_EI_WRAPPER_THREAD_STACK_SIZE=2048

[Vitalacy Guy]

Update, I left the aforementioned configure edge_impulse step run for a few minutes and after 100 attempts, it stops the cmake with this message 

ninja: error: manifest 'build.ninja' still dirty after 100 tries

[Edvin]

Hello,

Can you please try to delete the build folder, and then build again?

Best regards,

Edvin

[Vitalacy Guy]

Tried doing that but the problem still persists. I'm running this on macOS if that helps

[Edvin]

Hello,

Did you test on another computer? And did you try building another sample? Does that also fail? Or is it only that sample?

How do you build the sample? Command line or Visual Studio Code? Is it possible to zip and upload the application here, so that I can try to reproduce the issue?

BR,

Edvin

[Vitalacy Guy]

I tested on another computer and it worked fine. It's only that sample I believe. I built it using the nrf connect extension via visual studio

[Edvin]

ok, I don't know why it behaves like that. Try removing the build configuration from VS Code, and make sure it deletes the actual build folder. If it doesn't, delete it manually. Then create the build configuration again (without moving the application location by copying it). 

BR,
Edvin