Add settings utility and example app

MyApps

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+../MyApps

examples/settings/CMakeLists.txt

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+# ##############################################################################
+# apps/examples/settings/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+if(CONFIG_EXAMPLES_SETTINGS)
+  nuttx_add_application(
+    NAME
+    ${CONFIG_EXAMPLES_SETTINGS_PROGNAME}
+    PRIORITY
+    ${CONFIG_EXAMPLES_SETTINGS_PRIORITY}
+    STACKSIZE
+    ${CONFIG_EXAMPLES_SETTINGS_STACKSIZE}
+    MODULE
+    ${CONFIG_EXAMPLES_SETTINGS}
+    SRCS
+    settings_main.c)
+endif()

examples/settings/Kconfig

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+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_SETTINGS
+	tristate "Settings example"
+	default n
+	---help---
+        Enable the "settings" example. This uses the functions provided in
+        utils/settings to test the storage and retrieval od various
+        configurable parameters
+
+if EXAMPLES_SETTINGS
+
+config EXAMPLES_SETTINGS_PROGNAME
+	string "Program name"
+	default "settings"
+	---help---
+		This is the name of the program that will be used when the NSH ELF
+		program is installed.
+
+config EXAMPLES_SETTINGS_PRIORITY
+	int "settings task priority"
+	default 100
+
+config EXAMPLES_SETTINGS_STACKSIZE
+	int "settings stack size"
+	default DEFAULT_TASK_STACKSIZE
+
+choice
+	prompt "Select settings storage location"
+	default EXAMPLES_SETTINGS_CREATE_RAMDISK
+
+config EXAMPLES_SETTINGS_USE_TMPFS
+	bool "Use TMPFS"
+	select FS_TMPFS
+	---help---
+		TMPFS will be enabled and used
+
+config EXAMPLES_SETTINGS_USE_OTHER
+	bool "Use existing/other storage media"
+
+endchoice # Select settings storage location
+
+if EXAMPLES_SETTINGS_USE_OTHER
+
+config EXAMPLES_SETTINGS_EXISTING_STORAGE
+	string "Path to existing storage media"
+	default "/mnt/sdcard0"
+
+endif # EXAMPLES_SETTINGS_USE_OTHER
+endif # EXAMPLES_SETTINGS

examples/settings/Make.defs

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+############################################################################
+# apps/examples/settings/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_EXAMPLES_SETTINGS),)
+CONFIGURED_APPS += $(APPDIR)/examples/settings
+endif

examples/settings/Makefile

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+############################################################################
+# apps/examples/settings/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# settings built-in application info
+
+PROGNAME = $(CONFIG_EXAMPLES_SETTINGS_PROGNAME)
+PRIORITY = $(CONFIG_EXAMPLES_SETTINGS_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_SETTINGS_STACKSIZE)
+MODULE = $(CONFIG_EXAMPLES_SETTINGS)
+
+# Settings Example
+
+MAINSRC = settings_main.c
+
+include $(APPDIR)/Application.mk