cmake,make: Support SPIFFS image generation from build systems

components/spiffs/Makefile.projbuild

@@ -0,0 +1,45 @@
+SPIFFSGEN_PY:=$(COMPONENT_PATH)/spiffsgen.py
+SPIFFSGEN_FLASH_IN_PROJECT=
+
+ifdef CONFIG_SPIFFS_USE_MAGIC
+USE_MAGIC = "--use-magic"
+else
+USE_MAGIC = ""
+endif
+
+ifdef CONFIG_SPIFFS_USE_MAGIC_LENGTH
+USE_MAGIC_LEN = "--use-magic-len" 
+else
+USE_MAGIC_LEN = ""
+endif
+
+# spiffs_create_partition_image
+#
+# Create a spiffs image of the specified directory on the host during build and optionally
+# have the created image flashed using `make flash`
+define spiffs_create_partition_image
+
+
+$(1)_bin: $(PARTITION_TABLE_BIN) | check_python_dependencies
+	partition_size=`$(GET_PART_INFO) --partition-name $(1) \
+	--partition-table-file $(PARTITION_TABLE_BIN) \
+	get_partition_info --info size`; \
+	$(PYTHON) $(SPIFFSGEN_PY) $$$$partition_size $(2) $(BUILD_DIR_BASE)/$(1).bin \
+	--page-size=$(CONFIG_SPIFFS_PAGE_SIZE) \
+	--obj-name-len=$(CONFIG_SPIFFS_OBJ_NAME_LEN) \
+	--meta-len=$(CONFIG_SPIFFS_META_LENGTH) \
+	$(USE_MAGIC) \
+	$(USE_MAGIC_LEN) 
+
+all_binaries: $(1)_bin
+print_flash_cmd: $(1)_bin
+
+# Append the created binary to esptool_py args if FLASH_IN_PROJECT is set
+ifeq ($(3), FLASH_IN_PROJECT)
+SPIFFSGEN_FLASH_IN_PROJECT += $(1)
+endif
+endef
+
+ESPTOOL_ALL_FLASH_ARGS += $(foreach partition,$(SPIFFSGEN_FLASH_IN_PROJECT), \
+$(shell $(GET_PART_INFO) --partition-name $(partition) \
+--partition-table-file $(PARTITION_TABLE_BIN) get_partition_info --info offset) $(BUILD_DIR_BASE)/$(partition).bin)

components/spiffs/project_include.cmake

@@ -0,0 +1,46 @@
+# spiffs_create_partition_image
+#
+# Create a spiffs image of the specified directory on the host during build and optionally
+# have the created image flashed using `idf.py flash`
+function(spiffs_create_partition_image partition base_dir)
+    set(options FLASH_IN_PROJECT)
+    cmake_parse_arguments(arg "${options}" "" "" "${ARGN}")
+
+    set(spiffsgen_py ${PYTHON} ${IDF_PATH}/components/spiffs/spiffsgen.py)
+
+    get_filename_component(base_dir_full_path ${base_dir} ABSOLUTE)
+
+    partition_table_get_partition_info(size "--partition-name ${partition}" "size")
+    partition_table_get_partition_info(offset "--partition-name ${partition}" "offset")
+
+    set(image_file ${CMAKE_BINARY_DIR}/${partition}.bin)
+
+    if(CONFIG_SPIFFS_USE_MAGIC)
+        set(use_magic "--use-magic")
+    endif()
+
+    if(CONFIG_SPIFFS_USE_MAGIC_LENGTH)
+        set(use_magic_len "--use-magic-len")
+    endif()
+
+    # Execute SPIFFS image generation; this always executes as there is no way to specify for CMake to watch for
+    # contents of the base dir changing.
+    add_custom_target(spiffs_${partition}_bin ALL
+        COMMAND ${spiffsgen_py} ${size} ${base_dir_full_path} ${image_file}
+        --page-size=${CONFIG_SPIFFS_PAGE_SIZE}
+        --obj-name-len=${CONFIG_SPIFFS_OBJ_NAME_LEN}
+        --meta-len=${CONFIG_SPIFFS_META_LENGTH}
+        ${use_magic}
+        ${use_magic_len}
+        )
+
+    set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY
+        ADDITIONAL_MAKE_CLEAN_FILES
+        ${image_file})
+
+    if(arg_FLASH_IN_PROJECT)
+        esptool_py_flash_project_args(${partition} ${offset} ${image_file} FLASH_IN_PROJECT)
+    else()
+        esptool_py_flash_project_args(${partition} ${offset} ${image_file})
+    endif()
+endfunction()