esp-idf/components/app_update/CMakeLists.txt

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CMake
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set(COMPONENT_SRCS "esp_ota_ops.c"
"esp_app_desc.c")
set(COMPONENT_ADD_INCLUDEDIRS "include")
set(COMPONENT_REQUIRES spi_flash partition_table bootloader_support)
set(COMPONENT_PRIV_REQUIRES)
register_component()
# esp_app_desc structure is added as an undefined symbol because otherwise the
# linker will ignore this structure as it has no other files depending on it.
target_link_libraries(${COMPONENT_LIB} "-u esp_app_desc")
# cut PROJECT_VER and PROJECT_NAME to required 32 characters.
idf_build_get_property(project_ver PROJECT_VER)
idf_build_get_property(project_name PROJECT_NAME)
string(SUBSTRING "${project_ver}" 0 31 PROJECT_VER_CUT)
string(SUBSTRING "${project_name}" 0 31 PROJECT_NAME_CUT)
set_source_files_properties(
SOURCE "esp_app_desc.c"
PROPERTIES COMPILE_DEFINITIONS
"PROJECT_VER=\"${PROJECT_VER_CUT}\"; PROJECT_NAME=\"${PROJECT_NAME_CUT}\"")
if(NOT BOOTLOADER_BUILD)
partition_table_get_partition_info(otadata_offset "--partition-type data --partition-subtype ota" "offset")
partition_table_get_partition_info(otadata_size "--partition-type data --partition-subtype ota" "size")
# Add custom target for generating empty otadata partition for flashing
if(otadata_size AND otadata_offset)
idf_build_get_property(build_dir BUILD_DIR)
set(blank_otadata_file ${build_dir}/ota_data_initial.bin)
idf_build_get_property(idf_path IDF_PATH)
idf_build_get_property(python PYTHON)
add_custom_command(OUTPUT ${blank_otadata_file}
COMMAND ${python} ${idf_path}/components/partition_table/parttool.py
--partition-type data --partition-subtype ota -q
--partition-table-file ${PARTITION_CSV_PATH} generate_blank_partition_file
--output ${blank_otadata_file})
add_custom_target(blank_ota_data ALL DEPENDS ${blank_otadata_file})
add_dependencies(app blank_ota_data)
set(otatool_py ${python} ${COMPONENT_DIR}/otatool.py)
add_custom_target(read_otadata DEPENDS "${PARTITION_CSV_PATH}"
COMMAND ${otatool_py} --partition-table-file ${PARTITION_CSV_PATH} read_otadata)
add_custom_target(erase_otadata DEPENDS "${PARTITION_CSV_PATH}"
COMMAND ${otatool_py} --partition-table-file ${PARTITION_CSV_PATH} erase_otadata)
esptool_py_flash_project_args(otadata ${otadata_offset} "${blank_otadata_file}" FLASH_IN_PROJECT)
endif()
endif()