diff --git a/demos/device/device_os_none/.cproject b/demos/device/device_os_none/.cproject
index d640a2dd..691f72cc 100644
--- a/demos/device/device_os_none/.cproject
+++ b/demos/device/device_os_none/.cproject
@@ -1,23 +1,25 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
+<?fileVersion 4.0.0?>
+
+<cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
 	<storageModule moduleId="org.eclipse.cdt.core.settings">
 		<cconfiguration id="com.crt.advproject.config.exe.debug.856400198">
 			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.crt.advproject.config.exe.debug.856400198" moduleId="org.eclipse.cdt.core.settings" name="Board LPCXpresso1347">
 				<macros>
 					<stringMacro name="CFLAGS_OFF" type="VALUE_TEXT" value=""/>
-					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 					<stringMacro name="CFLAGS" type="VALUE_TEXT" value="${CFLAGS_OFF}"/>
+					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 				</macros>
 				<externalSettings/>
 				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
@@ -72,7 +74,7 @@
 								</option>
 								<option id="gnu.c.link.option.paths.1465143173" name="Library search path (-L)" superClass="gnu.c.link.option.paths"/>
 								<option id="gnu.c.link.option.libs.447978281" name="Libraries (-l)" superClass="gnu.c.link.option.libs"/>
-								<option id="com.crt.advproject.link.gcc.hdrlib.1111642583" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
+								<option id="com.crt.advproject.link.gcc.hdrlib.1111642583" name="Library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.gcc.multicore.slave.1875369133" name="Multicore slave" superClass="com.crt.advproject.link.gcc.multicore.slave"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.1234316494" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
@@ -95,19 +97,19 @@
 			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.crt.advproject.config.exe.debug.856400198.534940316" moduleId="org.eclipse.cdt.core.settings" name="Board rf1ghznode">
 				<macros>
 					<stringMacro name="CFLAGS_OFF" type="VALUE_TEXT" value=""/>
-					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 					<stringMacro name="CFLAGS" type="VALUE_TEXT" value="${CFLAGS_OFF}"/>
+					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 				</macros>
 				<externalSettings/>
 				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
@@ -163,7 +165,7 @@
 								</option>
 								<option id="gnu.c.link.option.paths.1946871342" name="Library search path (-L)" superClass="gnu.c.link.option.paths"/>
 								<option id="gnu.c.link.option.libs.937236410" name="Libraries (-l)" superClass="gnu.c.link.option.libs"/>
-								<option id="com.crt.advproject.link.gcc.hdrlib.1273255587" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
+								<option id="com.crt.advproject.link.gcc.hdrlib.1273255587" name="Library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.888929207" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
@@ -180,24 +182,25 @@
 			<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>
 			<storageModule moduleId="org.eclipse.cdt.core.language.mapping"/>
 			<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets"/>
+			<storageModule moduleId="scannerConfiguration"/>
 		</cconfiguration>
 		<cconfiguration id="com.crt.advproject.config.exe.debug.856400198.1273868481">
 			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.crt.advproject.config.exe.debug.856400198.1273868481" moduleId="org.eclipse.cdt.core.settings" name="Board EA4357">
 				<macros>
 					<stringMacro name="CFLAGS_OFF" type="VALUE_TEXT" value=""/>
-					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 					<stringMacro name="CFLAGS" type="VALUE_TEXT" value="${CFLAGS_OFF}"/>
+					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 				</macros>
 				<externalSettings/>
 				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
@@ -255,7 +258,7 @@
 								</option>
 								<option id="gnu.c.link.option.paths.975811544" name="Library search path (-L)" superClass="gnu.c.link.option.paths"/>
 								<option id="gnu.c.link.option.libs.1195892209" name="Libraries (-l)" superClass="gnu.c.link.option.libs"/>
-								<option id="com.crt.advproject.link.gcc.hdrlib.2063456418" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
+								<option id="com.crt.advproject.link.gcc.hdrlib.2063456418" name="Library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.fpu.764700776" name="Floating point" superClass="com.crt.advproject.link.fpu" value="com.crt.advproject.link.fpu.fpv4" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.gcc.multicore.slave.1805648374" name="Multicore slave" superClass="com.crt.advproject.link.gcc.multicore.slave"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.1656058909" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
@@ -279,19 +282,19 @@
 			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.crt.advproject.config.exe.debug.856400198.2062223128" moduleId="org.eclipse.cdt.core.settings" name="Board LPCXpresso1769">
 				<macros>
 					<stringMacro name="CFLAGS_OFF" type="VALUE_TEXT" value=""/>
-					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 					<stringMacro name="CFLAGS" type="VALUE_TEXT" value="${CFLAGS_OFF}"/>
+					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 				</macros>
 				<externalSettings/>
 				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
@@ -346,7 +349,7 @@
 								</option>
 								<option id="gnu.c.link.option.paths.2054767546" name="Library search path (-L)" superClass="gnu.c.link.option.paths"/>
 								<option id="gnu.c.link.option.libs.103901185" name="Libraries (-l)" superClass="gnu.c.link.option.libs"/>
-								<option id="com.crt.advproject.link.gcc.hdrlib.1232933180" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.semihost" valueType="enumerated"/>
+								<option id="com.crt.advproject.link.gcc.hdrlib.1232933180" name="Library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.semihost" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.gcc.multicore.slave.1338502321" name="Multicore slave" superClass="com.crt.advproject.link.gcc.multicore.slave"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.1187768552" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
@@ -369,19 +372,19 @@
 			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.crt.advproject.config.exe.debug.856400198.1273868481.1206192234" moduleId="org.eclipse.cdt.core.settings" name="Board LPCLink2">
 				<macros>
 					<stringMacro name="CFLAGS_OFF" type="VALUE_TEXT" value=""/>
-					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 					<stringMacro name="CFLAGS" type="VALUE_TEXT" value="${CFLAGS_OFF}"/>
+					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 				</macros>
 				<externalSettings/>
 				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
@@ -439,7 +442,7 @@
 								</option>
 								<option id="gnu.c.link.option.paths.1283719064" name="Library search path (-L)" superClass="gnu.c.link.option.paths"/>
 								<option id="gnu.c.link.option.libs.321742135" name="Libraries (-l)" superClass="gnu.c.link.option.libs"/>
-								<option id="com.crt.advproject.link.gcc.hdrlib.1928205371" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
+								<option id="com.crt.advproject.link.gcc.hdrlib.1928205371" name="Library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.fpu.141332057" name="Floating point" superClass="com.crt.advproject.link.fpu" value="com.crt.advproject.link.fpu.fpv4" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.gcc.multicore.slave.1934172713" name="Multicore slave" superClass="com.crt.advproject.link.gcc.multicore.slave"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.1173884844" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
@@ -463,19 +466,19 @@
 			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="com.crt.advproject.config.exe.debug.856400198.1273868481.836749266" moduleId="org.eclipse.cdt.core.settings" name="Board NGX4330">
 				<macros>
 					<stringMacro name="CFLAGS_OFF" type="VALUE_TEXT" value=""/>
-					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 					<stringMacro name="CFLAGS" type="VALUE_TEXT" value="${CFLAGS_OFF}"/>
+					<stringMacro name="CFLAGS_ON" type="VALUE_TEXT" value="-Wextra -Wswitch-default -Wunsafe-loop-optimizations -Wcast-align -Wlogical-op -Wpacked-bitfield-compat -Wnested-externs -Wredundant-decls -Winline"/>
 				</macros>
 				<externalSettings/>
 				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
@@ -533,7 +536,7 @@
 								</option>
 								<option id="gnu.c.link.option.paths.1589121363" name="Library search path (-L)" superClass="gnu.c.link.option.paths"/>
 								<option id="gnu.c.link.option.libs.1652666841" name="Libraries (-l)" superClass="gnu.c.link.option.libs"/>
-								<option id="com.crt.advproject.link.gcc.hdrlib.585190995" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
+								<option id="com.crt.advproject.link.gcc.hdrlib.585190995" name="Library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.nohost" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.fpu.1438883456" name="Floating point" superClass="com.crt.advproject.link.fpu" value="com.crt.advproject.link.fpu.fpv4" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.gcc.multicore.slave.1805648374.419936729" name="Multicore slave" superClass="com.crt.advproject.link.gcc.multicore.slave"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.2056104600" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
diff --git a/demos/device/src/tusb_config.h b/demos/device/src/tusb_config.h
index f8d1fb68..94261c39 100644
--- a/demos/device/src/tusb_config.h
+++ b/demos/device/src/tusb_config.h
@@ -36,13 +36,6 @@
 */
 /**************************************************************************/
 
-/** \ingroup TBD
- *  \defgroup TBD
- *  \brief TBD
- *
- *  @{
- */
-
 #ifndef _TUSB_TUSB_CONFIG_H_
 #define _TUSB_TUSB_CONFIG_H_
 
@@ -53,10 +46,9 @@
 //--------------------------------------------------------------------+
 // CONTROLLER CONFIGURATION
 //--------------------------------------------------------------------+
-//#define TUSB_CFG_MCU will be passed from IDE for easy board/mcu switching
+//#define TUSB_CFG_MCU will be passed from IDE/command line for easy board/mcu switching
 
 #define TUSB_CFG_CONTROLLER_0_MODE  (TUSB_MODE_DEVICE)
-#define TUSB_CFG_CONTROLLER_1_MODE  (TUSB_MODE_NONE) // TODO not yet tested
 
 //--------------------------------------------------------------------+
 // DEVICE CONFIGURATION
@@ -78,9 +70,8 @@
 //--------------------------------------------------------------------+
 #define TUSB_CFG_DEBUG                3
 
-//#define TUSB_CFG_OS                   TUSB_OS_NONE // defined using eclipse build
-//#define TUSB_CFG_OS_TASK_PRIO
-
+//#define TUSB_CFG_OS                   TUSB_OS_NONE // be passed from IDE/command line for easy project switching
+//#define TUSB_CFG_OS_TASK_PRIO                      // be passed from IDE/command line for easy project switching
 #define TUSB_CFG_OS_TICKS_PER_SECOND  1000
 
 //--------------------------------------------------------------------+
@@ -128,5 +119,3 @@
 #endif
 
 #endif /* _TUSB_TUSB_CONFIG_H_ */
-
-/** @} */
diff --git a/demos/host/host_os_none/.cproject b/demos/host/host_os_none/.cproject
index 4388865c..d722e8db 100644
--- a/demos/host/host_os_none/.cproject
+++ b/demos/host/host_os_none/.cproject
@@ -167,6 +167,7 @@
 								<option id="com.crt.advproject.link.gcc.hdrlib.1015545513" name="Use C library" superClass="com.crt.advproject.link.gcc.hdrlib" value="com.crt.advproject.gcc.link.hdrlib.codered.semihost" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.fpu.409118044" name="Floating point" superClass="com.crt.advproject.link.fpu" value="com.crt.advproject.link.fpu.fpv4" valueType="enumerated"/>
 								<option id="com.crt.advproject.link.gcc.multicore.slave.807948498" name="Multicore slave" superClass="com.crt.advproject.link.gcc.multicore.slave"/>
+								<option id="com.crt.advproject.link.gcc.multicore.master.1340978016" superClass="com.crt.advproject.link.gcc.multicore.master"/>
 								<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.388300407" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
diff --git a/demos/host/src/tusb_config.h b/demos/host/src/tusb_config.h
index 30fc5eae..d1b717a2 100644
--- a/demos/host/src/tusb_config.h
+++ b/demos/host/src/tusb_config.h
@@ -36,13 +36,6 @@
 */
 /**************************************************************************/
 
-/** \ingroup TBD
- *  \defgroup TBD
- *  \brief TBD
- *
- *  @{
- */
-
 #ifndef _TUSB_TUSB_CONFIG_H_
 #define _TUSB_TUSB_CONFIG_H_
 
@@ -55,7 +48,6 @@
 //--------------------------------------------------------------------+
 //#define TUSB_CFG_MCU will be passed from IDE for easy board/mcu switching
 #define TUSB_CFG_CONTROLLER_0_MODE  (TUSB_MODE_HOST)
-#define TUSB_CFG_CONTROLLER_1_MODE  (TUSB_MODE_NONE) // TODO not yet tested
 
 //--------------------------------------------------------------------+
 // HOST CONFIGURATION
@@ -78,7 +70,7 @@
 #define TUSB_CFG_DEBUG                3
 
 //#define TUSB_CFG_OS                   TUSB_OS_NONE // defined using eclipse build
-//#define TUSB_CFG_OS_TASK_PRIO
+//#define TUSB_CFG_OS_TASK_PRIO                      // defined using eclipse build
 
 #define TUSB_CFG_OS_TICKS_PER_SECOND  1000
 
@@ -119,5 +111,3 @@
 #endif
 
 #endif /* _TUSB_TUSB_CONFIG_H_ */
-
-/** @} */
diff --git a/tinyusb/class/cdc.h b/tinyusb/class/cdc.h
index 11c989d0..76ac8a17 100644
--- a/tinyusb/class/cdc.h
+++ b/tinyusb/class/cdc.h
@@ -36,9 +36,7 @@
 */
 /**************************************************************************/
 
-/** 
- *  \addtogroup ClassDriver Class Driver
- *  @{
+/** \ingroup ClassDriver Class Driver
  *  \defgroup ClassDriver_CDC Communication Device Class (CDC)
  *            Currently only Abstract Control Model subclass is supported
  *  @{
@@ -396,4 +394,3 @@ STATIC_ASSERT(sizeof(cdc_line_control_state_t) == 2, "size is not correct");
 #endif
 
 /** @} */
-/** @} */
diff --git a/tinyusb/class/cdc_host.h b/tinyusb/class/cdc_host.h
index 91e653d0..183cfd4b 100644
--- a/tinyusb/class/cdc_host.h
+++ b/tinyusb/class/cdc_host.h
@@ -48,16 +48,14 @@
  extern "C" {
 #endif
 
-/** \addtogroup ClassDriver_CDC Communication Device Class (CDC)
- *  @{ */
-
 //--------------------------------------------------------------------+
-// APPLICATION PUBLIC API
+// CDC APPLICATION PUBLIC API
 //--------------------------------------------------------------------+
-/** \addtogroup CDC_Serial Serial
- *  @{
- *  \defgroup   CDC_Serial_Host Host
- *  @{ */
+/** \ingroup ClassDriver_CDC Communication Device Class (CDC)
+ * \addtogroup CDC_Serial Serial
+ * @{
+ * \defgroup   CDC_Serial_Host Host
+ * @{ */
 
 /** \brief 			Check if device support CDC Serial interface or not
  * \param[in]		dev_addr	device address
@@ -131,15 +129,14 @@ void tusbh_cdc_unmounted_cb(uint8_t dev_addr);
  */
 void tusbh_cdc_xfer_isr(uint8_t dev_addr, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes);
 
-/// @}
+/// @} // group CDC_Serial_Host
 /// @}
 
 //--------------------------------------------------------------------+
 // RNDIS APPLICATION API
 //--------------------------------------------------------------------+
-/** \addtogroup CDC_RNDIS Remote Network Driver Interface Specification (RNDIS)
- * @{
- * \addtogroup CDC_RNSID_Host Host
+/** \ingroup CDC_RNDIS Remote Network Driver Interface Specification (RNDIS)
+ * \defgroup CDC_RNSID_Host Host
  *  @{ */
 
 bool tusbh_cdc_rndis_is_mounted(uint8_t dev_addr) ATTR_PURE ATTR_WARN_UNUSED_RESULT;
@@ -162,8 +159,7 @@ void tusbh_cdc_rndis_unmounted_cb(uint8_t dev_addr);
 
 void tusbh_cdc_rndis_xfer_isr(uint8_t dev_addr, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes);
 
-/// @}
-/// @}
+/// @} // group CDC_RNSID_Host
 
 //--------------------------------------------------------------------+
 // USBH-CLASS API
@@ -194,5 +190,3 @@ void         cdch_close(uint8_t dev_addr);
 #endif
 
 #endif /* _TUSB_CDC_HOST_H_ */
-
-/** @} */
diff --git a/tinyusb/class/cdc_rndis.h b/tinyusb/class/cdc_rndis.h
index c610e578..3b4413c2 100644
--- a/tinyusb/class/cdc_rndis.h
+++ b/tinyusb/class/cdc_rndis.h
@@ -36,11 +36,11 @@
 */
 /**************************************************************************/
 
-/** \addtogroup CDC_RNDIS Remote Network Driver Interface Specification (RNDIS)
+/** \ingroup ClassDriver_CDC Communication Device Class (CDC)
+ * \defgroup CDC_RNDIS Remote Network Driver Interface Specification (RNDIS)
  *  @{
  *  \defgroup CDC_RNDIS_Common Common Definitions
- *  @{
- */
+ *  @{ */
 
 #ifndef _TUSB_CDC_RNDIS_H_
 #define _TUSB_CDC_RNDIS_H_
diff --git a/tinyusb/doxygen/configuration.h b/tinyusb/doxygen/configuration.h
index ceae8a73..e35dbbe3 100644
--- a/tinyusb/doxygen/configuration.h
+++ b/tinyusb/doxygen/configuration.h
@@ -1,29 +1,45 @@
 /** \addtogroup group_configuration
  *  @{ */
 
-/**
-  USB controller in MCU often has limited access to specific RAM section. The Stack will use this macro to place internal variables
+//--------------------------------------------------------------------+
+// COMMON CONFIGURATION
+//--------------------------------------------------------------------+
+
+/// \brief tell the stack which mode (host/device/otg) the usb controller0 will be operated on. Possible value is
+/// from \ref TUSB_MODE. Note the hardware usb controller must support the selected mode.
+#define TUSB_CFG_CONTROLLER_0_MODE
+
+/** USB controller in MCU often has limited access to specific RAM section. The Stack will use this macro to place internal variables
   into the USB RAM section as follows. if your mcu's usb controller has no such limit, define TUSB_CFG_ATTR_USBRAM as empty macro.
 
   @code
-  TUSB_CFG_ATTR_USBRAM uint8_t tinyusb_data[10];
+  TUSB_CFG_ATTR_USBRAM uint8_t usb_xfer_buffer[10];
   @endcode
  */
 #define TUSB_CFG_ATTR_USBRAM
 
+#define TUSB_CFG_MCU          ///< Select one of the supported MCU, the value must be from \ref config_mcu_selection
+#define TUSB_CFG_OS           ///< Select one of the supported RTOS, the value must be from \ref TUSB_OS RTOS.
+#define TUSB_CFG_OS_TASK_PRIO ///< If \ref TUSB_CFG_OS is configured to use a real RTOS (other than TUSB_OS_NONE). This determines the priority of the usb stack task.
 
-/** \defgroup TUSB_CFG_HOST Host
+//--------------------------------------------------------------------+
+// HOST CONFIGURATION
+//--------------------------------------------------------------------+
+/** \defgroup TUSB_CFG_HOST Host Options
  *  @{ */
 
-/// Maximum number of device host stack can manage
-/// - If hub class is not enabled, set this equal to number of controllers in host mode
-/// - if hub class is enabled, make sure hub is also counted
+/** \brief Maximum number of device host stack can manage
+ * \n If hub class is not enabled, set this equal to number of controllers in host mode
+ * \n If hub class is enabled, make sure hub is also counted */
 #define TUSB_CFG_HOST_DEVICE_MAX
 
-/// Buffer size used for getting device configuration descriptor. You may want to increase this from default
+/// \brief Buffer size used for getting device configuration descriptor. You may want to increase this from default (256)
 /// to support lengthy composite device especially with Audio or Video class
 #define TUSB_CFG_HOST_ENUM_BUFFER_SIZE
 
+/** \defgroup config_host_class Class Driver
+ * \brief For each Class Driver a value of 1 means enable, value of 0 mean disable
+ * @{ */
 #define TUSB_CFG_HOST_HUB           ///< Enable Hub Class
 #define TUSB_CFG_HOST_HID_KEYBOARD  ///< Enable HID Class for Keyboard
 #define TUSB_CFG_HOST_HID_MOUSE     ///< Enable HID Class for Mouse
@@ -31,9 +47,27 @@
 #define TUSB_CFG_HOST_MSC           ///< Enable Mass Storage Class (SCSI subclass only)
 #define TUSB_CFG_HOST_CDC           ///< Enable Virtual Serial (Communication Device Class)
 #define TUSB_CFG_HOST_CDC_RNDIS     ///< Enable Remote Network Device (require TUSB_CFG_HOST_CDC to be enabled)
+/** @} */
 
 /** @} */ // group Host
 
+//--------------------------------------------------------------------+
+// DEVICE CONFIGURATION
+//--------------------------------------------------------------------+
+/** \defgroup TUSB_CFG_DEVICE Device Options
+ * \brief For each Class Driver a value of 1 means enable, value of 0 mean disable
+ *  @{ */
 
+/** \defgroup config_device_class Class Driver
+ * \brief For each Class Driver a value of 1 means enable, value of 0 mean disable
+ * @{ */
+#define TUSB_CFG_DEVICE_HID_KEYBOARD ///< Enable HID Class for Keyboard
+#define TUSB_CFG_DEVICE_HID_MOUSE 	 ///< Enable HID Class for Mouse
+#define TUSB_CFG_DEVICE_HID_GENERIC  ///< Enable HID Class for Generic (not supported yet)
+#define TUSB_CFG_DEVICE_MSC 				 ///< Enable Mass Storage Class (SCSI subclass only)
+#define TUSB_CFG_DEVICE_CDC 				 ///< Enable Virtual Serial (Communication Device Class)
+/** @} */
+
+ /** @} */ // group Device
 
 /** @} */
diff --git a/tinyusb/tusb_option.h b/tinyusb/tusb_option.h
index 4bd720b2..39ab00de 100644
--- a/tinyusb/tusb_option.h
+++ b/tinyusb/tusb_option.h
@@ -48,7 +48,7 @@
 #define TUSB_VERSION_NAME   "alpha"
 #define TUSB_VERSION        XSTRING_(TUSB_VERSION_YEAR) "." XSTRING_(TUSB_VERSION_MONTH)
 
-/** \defgroup MCU_ MCU Selection
+/** \defgroup config_mcu_selection MCU Selection
  * \brief TUSB_CFG_MCU must be defined to one of these
  *  @{ */
 #define MCU_LPC13UXX       1 ///< NXP LPC13xx 12 bit ADC family with USB on-chip Rom Driver (not supported yet)
@@ -79,6 +79,14 @@
 #define TUSB_MODE_NONE    0x00 ///< Disabled
 /** @} */
 
+#ifndef TUSB_CFG_CONTROLLER_0_MODE
+  #define TUSB_CFG_CONTROLLER_0_MODE TUSB_MODE_NONE
+#endif
+
+#ifndef TUSB_CFG_CONTROLLER_1_MODE
+  #define TUSB_CFG_CONTROLLER_1_MODE TUSB_MODE_NONE
+#endif
+
 #define CONTROLLER_HOST_NUMBER (\
     ((TUSB_CFG_CONTROLLER_0_MODE & TUSB_MODE_HOST) ? 1 : 0) + \
     ((TUSB_CFG_CONTROLLER_1_MODE & TUSB_MODE_HOST) ? 1 : 0))
@@ -123,9 +131,6 @@
   #endif
 #endif
 
-/**
- * Maximum number of supported USB's configuration (currently only support only 1)
- */
 //#ifndef TUSB_CFG_CONFIGURATION_MAX
 //  #define TUSB_CFG_CONFIGURATION_MAX 1
 //  #warning TUSB_CFG_CONFIGURATION_MAX is not defined, default value is 1