CMakeLists.txt

cmake_minimum_required(VERSION 3.13.1)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(example-standalone-inferencing-zephyr)

include(utils/cmake/utils.cmake)
# Needed for colorful output
zephyr_compile_options(-fdiagnostics-color=always)

# Use hardware acceleration for DSP and Neural Network code
# You'll need to disable these on non-Arm cores
add_definitions(-DEIDSP_USE_CMSIS_DSP=1
                -DEIDSP_LOAD_CMSIS_DSP_SOURCES=1
                -DEI_CLASSIFIER_TFLITE_ENABLE_CMSIS_NN=1
                -DEIDSP_QUANTIZE_FILTERBANK=0
                -DARM_MATH_LOOPUNROLL
                -DMBEDTLS_PLATFORM_ZEROIZE_ALT
                )

# Add the Edge Impulse SDK
add_subdirectory(edge-impulse-sdk/cmake/zephyr)

# Include directories (everything in the SDK is already included here)
set(INCLUDES
    .
    src
    tflite-model
    model-parameters
    edge-impulse/ingestion-sdk-c
    edge-impulse/ingestion-sdk-platform/NordicSemi-nrf52
    edge-impulse/ingestion-sdk-platform/NordicSemi-nrf52/sensors
    edge-impulse/mbedtls_hmac_sha256_sw
    edge-impulse
    )
include_directories(${INCLUDES})

RECURSIVE_FIND_FILE(MODEL_FILES "tflite-model" "*.cpp")

RECURSIVE_FIND_FILE(PLATFORM_FILES "edge-impulse/ingestion-sdk-platform/NordicSemi-nrf52" "*.cpp")
RECURSIVE_FIND_FILE(INGESTION_FILES "edge-impulse/ingestion-sdk-c/" "*.cpp")
RECURSIVE_FIND_FILE(MBEDTLS_FILES "edge-impulse/mbedtls_hmac_sha256_sw/mbedtls/src" "*.c")
RECURSIVE_FIND_FILE(FIRMWARE_SDK_FILES "firmware-sdk" "*.cpp")
RECURSIVE_FIND_FILE(FIRMWARE_SDK_C_FILES "firmware-sdk" "*.c")

# TODO: exlude fusion due to types conflict, remove after porting whole firmware
list(FILTER FIRMWARE_SDK_FILES EXCLUDE REGEX ".*ei_fusion\\.cpp$")

list(APPEND SOURCE_FILES ${S_FILES})
list(APPEND SOURCE_FILES ${C_FILES})
list(APPEND SOURCE_FILES ${CC_FILES})
list(APPEND SOURCE_FILES ${MODEL_FILES})
list(APPEND SOURCE_FILES ${PLATFORM_FILES})
list(APPEND SOURCE_FILES ${INGESTION_FILES})
list(APPEND SOURCE_FILES ${MBEDTLS_FILES})
list(APPEND SOURCE_FILES ${PORTING_FILES})
list(APPEND SOURCE_FILES ${FIRMWARE_SDK_FILES})
list(APPEND SOURCE_FILES ${FIRMWARE_SDK_C_FILES})

# add all sources to the project
target_sources(app PRIVATE ${SOURCE_FILES})
target_sources(app PRIVATE src/main.cpp)