Added HW demo for triple buffer [WIP]

15 files changed, 2354 insertions, 0 deletions

diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.cproject b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.cproject
new file mode 100644
index 0000000..742db7a
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.cproject
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
+	<storageModule moduleId="org.eclipse.cdt.core.settings">
+		<cconfiguration id="0.114656749">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="0.114656749" moduleId="org.eclipse.cdt.core.settings" name="Default">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<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.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"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildProperties="" description="" id="0.114656749" name="Default" parent="org.eclipse.cdt.build.core.prefbase.cfg">
+					<folderInfo id="0.114656749." name="/" resourcePath="">
+						<toolChain id="org.eclipse.cdt.build.core.prefbase.toolchain.1182750861" name="No ToolChain" resourceTypeBasedDiscovery="false" superClass="org.eclipse.cdt.build.core.prefbase.toolchain">
+							<targetPlatform id="org.eclipse.cdt.build.core.prefbase.toolchain.1182750861.169007201" name=""/>
+							<builder autoBuildTarget="all" cleanBuildTarget="clean" enableAutoBuild="false" enableCleanBuild="true" enabledIncrementalBuild="true" id="org.eclipse.cdt.build.core.settings.default.builder.579570726" incrementalBuildTarget="all" keepEnvironmentInBuildfile="false" managedBuildOn="false" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="org.eclipse.cdt.build.core.settings.default.builder"/>
+							<tool id="org.eclipse.cdt.build.core.settings.holder.libs.2143276802" name="holder for library settings" superClass="org.eclipse.cdt.build.core.settings.holder.libs"/>
+							<tool id="org.eclipse.cdt.build.core.settings.holder.1873650595" name="Assembly" superClass="org.eclipse.cdt.build.core.settings.holder">
+								<option id="org.eclipse.cdt.build.core.settings.holder.incpaths.1821379090" name="Include Paths" superClass="org.eclipse.cdt.build.core.settings.holder.incpaths" valueType="includePath"/>
+								<inputType id="org.eclipse.cdt.build.core.settings.holder.inType.1337802279" languageId="org.eclipse.cdt.core.assembly" languageName="Assembly" sourceContentType="org.eclipse.cdt.core.asmSource" superClass="org.eclipse.cdt.build.core.settings.holder.inType"/>
+							</tool>
+							<tool id="org.eclipse.cdt.build.core.settings.holder.1707090075" name="GNU C++" superClass="org.eclipse.cdt.build.core.settings.holder">
+								<option id="org.eclipse.cdt.build.core.settings.holder.incpaths.586544031" name="Include Paths" superClass="org.eclipse.cdt.build.core.settings.holder.incpaths" valueType="includePath"/>
+								<inputType id="org.eclipse.cdt.build.core.settings.holder.inType.338985256" languageId="org.eclipse.cdt.core.g++" languageName="GNU C++" sourceContentType="org.eclipse.cdt.core.cxxSource,org.eclipse.cdt.core.cxxHeader" superClass="org.eclipse.cdt.build.core.settings.holder.inType"/>
+							</tool>
+							<tool id="org.eclipse.cdt.build.core.settings.holder.1165165914" name="GNU C" superClass="org.eclipse.cdt.build.core.settings.holder">
+								<option id="org.eclipse.cdt.build.core.settings.holder.incpaths.1379525985" name="Include Paths" superClass="org.eclipse.cdt.build.core.settings.holder.incpaths" valueType="includePath"/>
+								<inputType id="org.eclipse.cdt.build.core.settings.holder.inType.714476670" languageId="org.eclipse.cdt.core.gcc" languageName="GNU C" sourceContentType="org.eclipse.cdt.core.cSource,org.eclipse.cdt.core.cHeader" superClass="org.eclipse.cdt.build.core.settings.holder.inType"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+	</storageModule>
+	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+		<project id="RT-STM32F429-DISCOVERY-TRIBUF.null.1703860681" name="RT-STM32F429-DISCOVERY-TRIBUF"/>
+	</storageModule>
+	<storageModule moduleId="scannerConfiguration">
+		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		<scannerConfigBuildInfo instanceId="0.114656749">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId="org.eclipse.cdt.make.core.GCCStandardMakePerProjectProfile"/>
+		</scannerConfigBuildInfo>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+	<storageModule moduleId="refreshScope" versionNumber="2">
+		<configuration configurationName="Default">
+			<resource resourceType="PROJECT" workspacePath="/RT-STM32F429-DISCOVERY-TRIBUF"/>
+		</configuration>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>
+</cproject>
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.gitignore b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.gitignore
new file mode 100644
index 0000000..0a3664e
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.gitignore
@@ -0,0 +1,2 @@
+build/
+.dep/
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.project b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.project
new file mode 100644
index 0000000..26c76f3
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/.project
@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>RT-STM32F429-DISCOVERY-TRIBUF</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+				<dictionary>
+					<key>?name?</key>
+					<value></value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.append_environment</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.autoBuildTarget</key>
+					<value>all</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.buildArguments</key>
+					<value>-j1</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.buildCommand</key>
+					<value>make</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.cleanBuildTarget</key>
+					<value>clean</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.contents</key>
+					<value>org.eclipse.cdt.make.core.activeConfigSettings</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.enableAutoBuild</key>
+					<value>false</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.enableCleanBuild</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.enableFullBuild</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.fullBuildTarget</key>
+					<value>all</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.stopOnError</key>
+					<value>true</value>
+				</dictionary>
+				<dictionary>
+					<key>org.eclipse.cdt.make.core.useDefaultBuildCmd</key>
+					<value>true</value>
+				</dictionary>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+	<linkedResources>
+		<link>
+			<name>os-community</name>
+			<type>2</type>
+			<locationURI>PARENT-3-PROJECT_LOC/os</locationURI>
+		</link>
+		<link>
+			<name>os-git</name>
+			<type>2</type>
+			<locationURI>PARENT-4-PROJECT_LOC/os</locationURI>
+		</link>
+	</linkedResources>
+</projectDescription>
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/Makefile b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/Makefile
new file mode 100644
index 0000000..3ba803b
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/Makefile
@@ -0,0 +1,223 @@
+##############################################################################
+# Build global options
+# NOTE: Can be overridden externally.
+#
+
+# Compiler options here.
+ifeq ($(USE_OPT),)
+  USE_OPT = -O0 -ggdb -fomit-frame-pointer -falign-functions=16
+endif
+
+# C specific options here (added to USE_OPT).
+ifeq ($(USE_COPT),)
+  USE_COPT =
+endif
+
+# C++ specific options here (added to USE_OPT).
+ifeq ($(USE_CPPOPT),)
+  USE_CPPOPT = -fno-rtti
+endif
+
+# Enable this if you want the linker to remove unused code and data
+ifeq ($(USE_LINK_GC),)
+  USE_LINK_GC = yes
+endif
+
+# Linker extra options here.
+ifeq ($(USE_LDOPT),)
+  USE_LDOPT =
+endif
+
+# Enable this if you want link time optimizations (LTO)
+ifeq ($(USE_LTO),)
+  USE_LTO = no
+endif
+
+# If enabled, this option allows to compile the application in THUMB mode.
+ifeq ($(USE_THUMB),)
+  USE_THUMB = yes
+endif
+
+# Enable this if you want to see the full log while compiling.
+ifeq ($(USE_VERBOSE_COMPILE),)
+  USE_VERBOSE_COMPILE = no
+endif
+
+# If enabled, this option makes the build process faster by not compiling
+# modules not used in the current configuration.
+ifeq ($(USE_SMART_BUILD),)
+  USE_SMART_BUILD = yes
+endif
+
+#
+# Build global options
+##############################################################################
+
+##############################################################################
+# Architecture or project specific options
+#
+
+# Stack size to be allocated to the Cortex-M process stack. This stack is
+# the stack used by the main() thread.
+ifeq ($(USE_PROCESS_STACKSIZE),)
+  USE_PROCESS_STACKSIZE = 0x400
+endif
+
+# Stack size to the allocated to the Cortex-M main/exceptions stack. This
+# stack is used for processing interrupts and exceptions.
+ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
+  USE_EXCEPTIONS_STACKSIZE = 0x400
+endif
+
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
+ifeq ($(USE_FPU),)
+  USE_FPU = no
+endif
+
+#
+# Architecture or project specific options
+##############################################################################
+
+##############################################################################
+# Project, sources and paths
+#
+
+# Define project name here
+PROJECT = ch
+
+# Imported source files and paths
+CHIBIOS = ../../../..
+# Startup files.
+include $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/startup_stm32f4xx.mk
+# HAL-OSAL files (optional).
+include $(CHIBIOS)/community/os/hal/hal.mk
+include $(CHIBIOS)/community/os/hal/ports/STM32/STM32F4xx/platform.mk
+include $(CHIBIOS)/os/hal/boards/ST_STM32F429I_DISCOVERY/board.mk
+include $(CHIBIOS)/os/hal/osal/rt/osal.mk
+# RTOS files (optional).
+include $(CHIBIOS)/os/rt/rt.mk
+include $(CHIBIOS)/os/rt/ports/ARMCMx/compilers/GCC/mk/port_v7m.mk
+# Other files (optional).
+include $(CHIBIOS)/test/rt/test.mk
+
+# Define linker script file here
+LDSCRIPT = $(STARTUPLD)/STM32F429xI.ld
+
+# C sources that can be compiled in ARM or THUMB mode depending on the global
+# setting.
+CSRC = $(STARTUPSRC) \
+       $(KERNSRC) \
+       $(PORTSRC) \
+       $(OSALSRC) \
+       $(HALSRC) \
+       $(PLATFORMSRC) \
+       $(BOARDSRC) \
+       $(TESTSRC) \
+       $(CHIBIOS)/os/hal/lib/streams/memstreams.c \
+       $(CHIBIOS)/os/hal/lib/streams/chprintf.c \
+       $(CHIBIOS)/community/os/various/tribuf.c \
+       ./main.c \
+       # eol
+
+# C++ sources that can be compiled in ARM or THUMB mode depending on the global
+# setting.
+CPPSRC =
+
+# C sources to be compiled in ARM mode regardless of the global setting.
+# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
+#       option that results in lower performance and larger code size.
+ACSRC =
+
+# C++ sources to be compiled in ARM mode regardless of the global setting.
+# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
+#       option that results in lower performance and larger code size.
+ACPPSRC =
+
+# C sources to be compiled in THUMB mode regardless of the global setting.
+# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
+#       option that results in lower performance and larger code size.
+TCSRC =
+
+# C sources to be compiled in THUMB mode regardless of the global setting.
+# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
+#       option that results in lower performance and larger code size.
+TCPPSRC =
+
+# List ASM source files here
+ASMSRC = $(STARTUPASM) $(PORTASM) $(OSALASM)
+
+INCDIR = $(STARTUPINC) $(KERNINC) $(PORTINC) $(OSALINC) \
+         $(HALINC) $(PLATFORMINC) $(BOARDINC) $(TESTINC) \
+         $(CHIBIOS)/os/various \
+         $(CHIBIOS)/os/hal/lib/streams \
+         $(CHIBIOS)/community/os/various \
+         # eol
+
+#
+# Project, sources and paths
+##############################################################################
+
+##############################################################################
+# Compiler settings
+#
+
+MCU  = cortex-m4
+
+#TRGT = arm-elf-
+TRGT = arm-none-eabi-
+CC   = $(TRGT)gcc
+CPPC = $(TRGT)g++
+# Enable loading with g++ only if you need C++ runtime support.
+# NOTE: You can use C++ even without C++ support if you are careful. C++
+#       runtime support makes code size explode.
+LD   = $(TRGT)gcc
+#LD   = $(TRGT)g++
+CP   = $(TRGT)objcopy
+AS   = $(TRGT)gcc -x assembler-with-cpp
+AR   = $(TRGT)ar
+OD   = $(TRGT)objdump
+SZ   = $(TRGT)size
+HEX  = $(CP) -O ihex
+BIN  = $(CP) -O binary
+
+# ARM-specific options here
+AOPT =
+
+# THUMB-specific options here
+TOPT = -mthumb -DTHUMB
+
+# Define C warning options here
+CWARN = -Wall -Wextra -Wstrict-prototypes
+
+# Define C++ warning options here
+CPPWARN = -Wall -Wextra
+
+#
+# Compiler settings
+##############################################################################
+
+##############################################################################
+# Start of user section
+#
+
+# List all user C define here, like -D_DEBUG=1
+UDEFS =
+
+# Define ASM defines here
+UADEFS =
+
+# List all user directories here
+UINCDIR =
+
+# List the user directory to look for the libraries here
+ULIBDIR =
+
+# List all user libraries here
+ULIBS =
+
+#
+# End of user defines
+##############################################################################
+
+RULESPATH = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC
+include $(RULESPATH)/rules.mk
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/chconf.h b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/chconf.h
new file mode 100644
index 0000000..8411dcd
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/chconf.h
@@ -0,0 +1,501 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed 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.
+*/
+
+/**
+ * @file    templates/chconf.h
+ * @brief   Configuration file template.
+ * @details A copy of this file must be placed in each project directory, it
+ *          contains the application specific kernel settings.
+ *
+ * @addtogroup config
+ * @details Kernel related settings and hooks.
+ * @{
+ */
+
+#ifndef _CHCONF_H_
+#define _CHCONF_H_
+
+/*===========================================================================*/
+/**
+ * @name System timers settings
+ * @{
+ */
+/*===========================================================================*/
+
+/**
+ * @brief   System time counter resolution.
+ * @note    Allowed values are 16 or 32 bits.
+ */
+#define CH_CFG_ST_RESOLUTION                32
+
+/**
+ * @brief   System tick frequency.
+ * @details Frequency of the system timer that drives the system ticks. This
+ *          setting also defines the system tick time unit.
+ */
+#define CH_CFG_ST_FREQUENCY                 1000
+
+/**
+ * @brief   Time delta constant for the tick-less mode.
+ * @note    If this value is zero then the system uses the classic
+ *          periodic tick. This value represents the minimum number
+ *          of ticks that is safe to specify in a timeout directive.
+ *          The value one is not valid, timeouts are rounded up to
+ *          this value.
+ */
+#define CH_CFG_ST_TIMEDELTA                 0
+
+/** @} */
+
+/*===========================================================================*/
+/**
+ * @name Kernel parameters and options
+ * @{
+ */
+/*===========================================================================*/
+
+/**
+ * @brief   Round robin interval.
+ * @details This constant is the number of system ticks allowed for the
+ *          threads before preemption occurs. Setting this value to zero
+ *          disables the preemption for threads with equal priority and the
+ *          round robin becomes cooperative. Note that higher priority
+ *          threads can still preempt, the kernel is always preemptive.
+ * @note    Disabling the round robin preemption makes the kernel more compact
+ *          and generally faster.
+ * @note    The round robin preemption is not supported in tickless mode and
+ *          must be set to zero in that case.
+ */
+#define CH_CFG_TIME_QUANTUM                 0
+
+/**
+ * @brief   Managed RAM size.
+ * @details Size of the RAM area to be managed by the OS. If set to zero
+ *          then the whole available RAM is used. The core memory is made
+ *          available to the heap allocator and/or can be used directly through
+ *          the simplified core memory allocator.
+ *
+ * @note    In order to let the OS manage the whole RAM the linker script must
+ *          provide the @p __heap_base__ and @p __heap_end__ symbols.
+ * @note    Requires @p CH_CFG_USE_MEMCORE.
+ */
+#define CH_CFG_MEMCORE_SIZE                 0
+
+/**
+ * @brief   Idle thread automatic spawn suppression.
+ * @details When this option is activated the function @p chSysInit()
+ *          does not spawn the idle thread. The application @p main()
+ *          function becomes the idle thread and must implement an
+ *          infinite loop.
+ */
+#define CH_CFG_NO_IDLE_THREAD               FALSE
+
+/** @} */
+
+/*===========================================================================*/
+/**
+ * @name Performance options
+ * @{
+ */
+/*===========================================================================*/
+
+/**
+ * @brief   OS optimization.
+ * @details If enabled then time efficient rather than space efficient code
+ *          is used when two possible implementations exist.
+ *
+ * @note    This is not related to the compiler optimization options.
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_OPTIMIZE_SPEED               TRUE
+
+/** @} */
+
+/*===========================================================================*/
+/**
+ * @name Subsystem options
+ * @{
+ */
+/*===========================================================================*/
+
+/**
+ * @brief   Time Measurement APIs.
+ * @details If enabled then the time measurement APIs are included in
+ *          the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_TM                       TRUE
+
+/**
+ * @brief   Threads registry APIs.
+ * @details If enabled then the registry APIs are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_REGISTRY                 TRUE
+
+/**
+ * @brief   Threads synchronization APIs.
+ * @details If enabled then the @p chThdWait() function is included in
+ *          the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_WAITEXIT                 TRUE
+
+/**
+ * @brief   Semaphores APIs.
+ * @details If enabled then the Semaphores APIs are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_SEMAPHORES               TRUE
+
+/**
+ * @brief   Semaphores queuing mode.
+ * @details If enabled then the threads are enqueued on semaphores by
+ *          priority rather than in FIFO order.
+ *
+ * @note    The default is @p FALSE. Enable this if you have special
+ *          requirements.
+ * @note    Requires @p CH_CFG_USE_SEMAPHORES.
+ */
+#define CH_CFG_USE_SEMAPHORES_PRIORITY      FALSE
+
+/**
+ * @brief   Mutexes APIs.
+ * @details If enabled then the mutexes APIs are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_MUTEXES                  TRUE
+
+/**
+ * @brief   Enables recursive behavior on mutexes.
+ * @note    Recursive mutexes are heavier and have an increased
+ *          memory footprint.
+ *
+ * @note    The default is @p FALSE.
+ * @note    Requires @p CH_CFG_USE_MUTEXES.
+ */
+#define CH_CFG_USE_MUTEXES_RECURSIVE        FALSE
+
+/**
+ * @brief   Conditional Variables APIs.
+ * @details If enabled then the conditional variables APIs are included
+ *          in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ * @note    Requires @p CH_CFG_USE_MUTEXES.
+ */
+#define CH_CFG_USE_CONDVARS                 TRUE
+
+/**
+ * @brief   Conditional Variables APIs with timeout.
+ * @details If enabled then the conditional variables APIs with timeout
+ *          specification are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ * @note    Requires @p CH_CFG_USE_CONDVARS.
+ */
+#define CH_CFG_USE_CONDVARS_TIMEOUT         TRUE
+
+/**
+ * @brief   Events Flags APIs.
+ * @details If enabled then the event flags APIs are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_EVENTS                   TRUE
+
+/**
+ * @brief   Events Flags APIs with timeout.
+ * @details If enabled then the events APIs with timeout specification
+ *          are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ * @note    Requires @p CH_CFG_USE_EVENTS.
+ */
+#define CH_CFG_USE_EVENTS_TIMEOUT           TRUE
+
+/**
+ * @brief   Synchronous Messages APIs.
+ * @details If enabled then the synchronous messages APIs are included
+ *          in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_MESSAGES                 TRUE
+
+/**
+ * @brief   Synchronous Messages queuing mode.
+ * @details If enabled then messages are served by priority rather than in
+ *          FIFO order.
+ *
+ * @note    The default is @p FALSE. Enable this if you have special
+ *          requirements.
+ * @note    Requires @p CH_CFG_USE_MESSAGES.
+ */
+#define CH_CFG_USE_MESSAGES_PRIORITY        FALSE
+
+/**
+ * @brief   Mailboxes APIs.
+ * @details If enabled then the asynchronous messages (mailboxes) APIs are
+ *          included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ * @note    Requires @p CH_CFG_USE_SEMAPHORES.
+ */
+#define CH_CFG_USE_MAILBOXES                TRUE
+
+/**
+ * @brief   I/O Queues APIs.
+ * @details If enabled then the I/O queues APIs are included in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_QUEUES                   TRUE
+
+/**
+ * @brief   Core Memory Manager APIs.
+ * @details If enabled then the core memory manager APIs are included
+ *          in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_MEMCORE                  TRUE
+
+/**
+ * @brief   Heap Allocator APIs.
+ * @details If enabled then the memory heap allocator APIs are included
+ *          in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ * @note    Requires @p CH_CFG_USE_MEMCORE and either @p CH_CFG_USE_MUTEXES or
+ *          @p CH_CFG_USE_SEMAPHORES.
+ * @note    Mutexes are recommended.
+ */
+#define CH_CFG_USE_HEAP                     TRUE
+
+/**
+ * @brief   Memory Pools Allocator APIs.
+ * @details If enabled then the memory pools allocator APIs are included
+ *          in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ */
+#define CH_CFG_USE_MEMPOOLS                 TRUE
+
+/**
+ * @brief   Dynamic Threads APIs.
+ * @details If enabled then the dynamic threads creation APIs are included
+ *          in the kernel.
+ *
+ * @note    The default is @p TRUE.
+ * @note    Requires @p CH_CFG_USE_WAITEXIT.
+ * @note    Requires @p CH_CFG_USE_HEAP and/or @p CH_CFG_USE_MEMPOOLS.
+ */
+#define CH_CFG_USE_DYNAMIC                  TRUE
+
+/** @} */
+
+/*===========================================================================*/
+/**
+ * @name Debug options
+ * @{
+ */
+/*===========================================================================*/
+
+/**
+ * @brief   Debug option, kernel statistics.
+ *
+ * @note    The default is @p FALSE.
+ */
+#define CH_DBG_STATISTICS                   TRUE
+
+/**
+ * @brief   Debug option, system state check.
+ * @details If enabled the correct call protocol for system APIs is checked
+ *          at runtime.
+ *
+ * @note    The default is @p FALSE.
+ */
+#define CH_DBG_SYSTEM_STATE_CHECK           TRUE
+
+/**
+ * @brief   Debug option, parameters checks.
+ * @details If enabled then the checks on the API functions input
+ *          parameters are activated.
+ *
+ * @note    The default is @p FALSE.
+ */
+#define CH_DBG_ENABLE_CHECKS                TRUE
+
+/**
+ * @brief   Debug option, consistency checks.
+ * @details If enabled then all the assertions in the kernel code are
+ *          activated. This includes consistency checks inside the kernel,
+ *          runtime anomalies and port-defined checks.
+ *
+ * @note    The default is @p FALSE.
+ */
+#define CH_DBG_ENABLE_ASSERTS               TRUE
+
+/**
+ * @brief   Debug option, trace buffer.
+ * @details If enabled then the context switch circular trace buffer is
+ *          activated.
+ *
+ * @note    The default is @p FALSE.
+ */
+#define CH_DBG_ENABLE_TRACE                 TRUE
+
+/**
+ * @brief   Debug option, stack checks.
+ * @details If enabled then a runtime stack check is performed.
+ *
+ * @note    The default is @p FALSE.
+ * @note    The stack check is performed in a architecture/port dependent way.
+ *          It may not be implemented or some ports.
+ * @note    The default failure mode is to halt the system with the global
+ *          @p panic_msg variable set to @p NULL.
+ */
+#define CH_DBG_ENABLE_STACK_CHECK           TRUE
+
+/**
+ * @brief   Debug option, stacks initialization.
+ * @details If enabled then the threads working area is filled with a byte
+ *          value when a thread is created. This can be useful for the
+ *          runtime measurement of the used stack.
+ *
+ * @note    The default is @p FALSE.
+ */
+#define CH_DBG_FILL_THREADS                 TRUE
+
+/**
+ * @brief   Debug option, threads profiling.
+ * @details If enabled then a field is added to the @p thread_t structure that
+ *          counts the system ticks occurred while executing the thread.
+ *
+ * @note    The default is @p FALSE.
+ * @note    This debug option is not currently compatible with the
+ *          tickless mode.
+ */
+#define CH_DBG_THREADS_PROFILING            TRUE
+
+/** @} */
+
+/*===========================================================================*/
+/**
+ * @name Kernel hooks
+ * @{
+ */
+/*===========================================================================*/
+
+/**
+ * @brief   Threads descriptor structure extension.
+ * @details User fields added to the end of the @p thread_t structure.
+ */
+#define CH_CFG_THREAD_EXTRA_FIELDS                                          \
+  /* Add threads custom fields here.*/
+
+/**
+ * @brief   Threads initialization hook.
+ * @details User initialization code added to the @p chThdInit() API.
+ *
+ * @note    It is invoked from within @p chThdInit() and implicitly from all
+ *          the threads creation APIs.
+ */
+#define CH_CFG_THREAD_INIT_HOOK(tp) {                                       \
+  /* Add threads initialization code here.*/                                \
+}
+
+/**
+ * @brief   Threads finalization hook.
+ * @details User finalization code added to the @p chThdExit() API.
+ *
+ * @note    It is inserted into lock zone.
+ * @note    It is also invoked when the threads simply return in order to
+ *          terminate.
+ */
+#define CH_CFG_THREAD_EXIT_HOOK(tp) {                                       \
+  /* Add threads finalization code here.*/                                  \
+}
+
+/**
+ * @brief   Context switch hook.
+ * @details This hook is invoked just before switching between threads.
+ */
+#define CH_CFG_CONTEXT_SWITCH_HOOK(ntp, otp) {                              \
+  /* Context switch code here.*/                                            \
+}
+
+/**
+ * @brief   Idle thread enter hook.
+ * @note    This hook is invoked within a critical zone, no OS functions
+ *          should be invoked from here.
+ * @note    This macro can be used to activate a power saving mode.
+ */
+#define CH_CFG_IDLE_ENTER_HOOK() {                                          \
+}
+
+/**
+ * @brief   Idle thread leave hook.
+ * @note    This hook is invoked within a critical zone, no OS functions
+ *          should be invoked from here.
+ * @note    This macro can be used to deactivate a power saving mode.
+ */
+#define CH_CFG_IDLE_LEAVE_HOOK() {                                          \
+}
+
+/**
+ * @brief   Idle Loop hook.
+ * @details This hook is continuously invoked by the idle thread loop.
+ */
+#define CH_CFG_IDLE_LOOP_HOOK() {                                           \
+  /* Idle loop code here.*/                                                 \
+}
+
+/**
+ * @brief   System tick event hook.
+ * @details This hook is invoked in the system tick handler immediately
+ *          after processing the virtual timers queue.
+ */
+#define CH_CFG_SYSTEM_TICK_HOOK() {                                         \
+  /* System tick event code here.*/                                         \
+}
+
+/**
+ * @brief   System halt hook.
+ * @details This hook is invoked in case to a system halting error before
+ *          the system is halted.
+ */
+#define CH_CFG_SYSTEM_HALT_HOOK(reason) {                                   \
+  /* System halt code here.*/                                               \
+}
+
+/** @} */
+
+/*===========================================================================*/
+/* Port-specific settings (override port settings defaulted in chcore.h).    */
+/*===========================================================================*/
+
+#define TRIBUF_USE_WAIT     TRUE
+
+#endif  /* _CHCONF_H_ */
+
+/** @} */
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/debug/RT-STM32F429-DISCOVERY-TRIBUF (OpenOCD, Flash and Run).launch b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/debug/RT-STM32F429-DISCOVERY-TRIBUF (OpenOCD, Flash and Run).launch
new file mode 100644
index 0000000..351a935
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/debug/RT-STM32F429-DISCOVERY-TRIBUF (OpenOCD, Flash and Run).launch
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<launchConfiguration type="org.eclipse.cdt.debug.gdbjtag.launchConfigurationType">
+<stringAttribute key="bad_container_name" value="\RT-STM32F429-DISCOVERY-TRIBUF\debug"/>
+<intAttribute key="org.eclipse.cdt.debug.gdbjtag.core.delay" value="1"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.doHalt" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.doReset" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.imageFileName" value=""/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.imageOffset" value=""/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.initCommands" value="set remotetimeout 20&#13;&#10;monitor reset init&#13;&#10;monitor sleep 50&#13;&#10;"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.ipAddress" value="localhost"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.jtagDevice" value="Generic TCP/IP"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadImage" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadSymbols" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.pcRegister" value=""/>
+<intAttribute key="org.eclipse.cdt.debug.gdbjtag.core.portNumber" value="3333"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.runCommands" value=""/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setPcRegister" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setResume" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setStopAt" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.stopAt" value="main"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.symbolsFileName" value=""/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.symbolsOffset" value=""/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useFileForImage" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useFileForSymbols" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForImage" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForSymbols" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useRemoteTarget" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.mi.core.DEBUG_NAME" value="arm-none-eabi-gdb"/>
+<stringAttribute key="org.eclipse.cdt.debug.mi.core.commandFactory" value="Standard"/>
+<stringAttribute key="org.eclipse.cdt.debug.mi.core.protocol" value="mi"/>
+<booleanAttribute key="org.eclipse.cdt.debug.mi.core.verboseMode" value="false"/>
+<stringAttribute key="org.eclipse.cdt.dsf.gdb.DEBUG_NAME" value="arm-none-eabi-gdb"/>
+<intAttribute key="org.eclipse.cdt.launch.ATTR_BUILD_BEFORE_LAUNCH_ATTR" value="2"/>
+<stringAttribute key="org.eclipse.cdt.launch.COREFILE_PATH" value=""/>
+<stringAttribute key="org.eclipse.cdt.launch.DEBUGGER_REGISTER_GROUPS" value=""/>
+<stringAttribute key="org.eclipse.cdt.launch.FORMAT" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&lt;contentList/&gt;"/>
+<stringAttribute key="org.eclipse.cdt.launch.GLOBAL_VARIABLES" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;globalVariableList/&gt;&#13;&#10;"/>
+<stringAttribute key="org.eclipse.cdt.launch.MEMORY_BLOCKS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;memoryBlockExpressionList/&gt;&#13;&#10;"/>
+<stringAttribute key="org.eclipse.cdt.launch.PROGRAM_NAME" value="./build/ch.elf"/>
+<stringAttribute key="org.eclipse.cdt.launch.PROJECT_ATTR" value="RT-STM32F429-DISCOVERY-TRIBUF"/>
+<booleanAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_AUTO_ATTR" value="true"/>
+<stringAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_ID_ATTR" value="0.114656749"/>
+<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
+<listEntry value="/RT-STM32F429-DISCOVERY-TRIBUF"/>
+</listAttribute>
+<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
+<listEntry value="4"/>
+</listAttribute>
+<listAttribute key="org.eclipse.debug.ui.favoriteGroups">
+<listEntry value="org.eclipse.debug.ui.launchGroup.debug"/>
+</listAttribute>
+</launchConfiguration>
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/debug/RT-STM32F429-DISCOVERY-TRIBUF (OpenOCD, Run Only).launch b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/debug/RT-STM32F429-DISCOVERY-TRIBUF (OpenOCD, Run Only).launch
new file mode 100644
index 0000000..150ba3d
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/debug/RT-STM32F429-DISCOVERY-TRIBUF (OpenOCD, Run Only).launch
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<launchConfiguration type="org.eclipse.cdt.debug.gdbjtag.launchConfigurationType">
+<stringAttribute key="bad_container_name" value="\RT-STM32F429-DISCOVERY-TRIBUF\debug"/>
+<intAttribute key="org.eclipse.cdt.debug.gdbjtag.core.delay" value="1"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.doHalt" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.doReset" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.imageFileName" value=""/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.imageOffset" value=""/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.initCommands" value="set remotetimeout 20&#13;&#10;monitor reset init&#13;&#10;monitor sleep 50&#13;&#10;"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.ipAddress" value="localhost"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.jtagDevice" value="Generic TCP/IP"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadImage" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadSymbols" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.pcRegister" value=""/>
+<intAttribute key="org.eclipse.cdt.debug.gdbjtag.core.portNumber" value="3333"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.runCommands" value=""/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setPcRegister" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setResume" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setStopAt" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.stopAt" value="main"/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.symbolsFileName" value=""/>
+<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.symbolsOffset" value=""/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useFileForImage" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useFileForSymbols" value="false"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForImage" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForSymbols" value="true"/>
+<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useRemoteTarget" value="true"/>
+<stringAttribute key="org.eclipse.cdt.debug.mi.core.DEBUG_NAME" value="arm-none-eabi-gdb"/>
+<stringAttribute key="org.eclipse.cdt.debug.mi.core.commandFactory" value="Standard"/>
+<stringAttribute key="org.eclipse.cdt.debug.mi.core.protocol" value="mi"/>
+<booleanAttribute key="org.eclipse.cdt.debug.mi.core.verboseMode" value="false"/>
+<stringAttribute key="org.eclipse.cdt.dsf.gdb.DEBUG_NAME" value="arm-none-eabi-gdb"/>
+<intAttribute key="org.eclipse.cdt.launch.ATTR_BUILD_BEFORE_LAUNCH_ATTR" value="2"/>
+<stringAttribute key="org.eclipse.cdt.launch.COREFILE_PATH" value=""/>
+<stringAttribute key="org.eclipse.cdt.launch.DEBUGGER_REGISTER_GROUPS" value=""/>
+<stringAttribute key="org.eclipse.cdt.launch.FORMAT" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&lt;contentList/&gt;"/>
+<stringAttribute key="org.eclipse.cdt.launch.GLOBAL_VARIABLES" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;globalVariableList/&gt;&#13;&#10;"/>
+<stringAttribute key="org.eclipse.cdt.launch.MEMORY_BLOCKS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;memoryBlockExpressionList/&gt;&#13;&#10;"/>
+<stringAttribute key="org.eclipse.cdt.launch.PROGRAM_NAME" value="./build/ch.elf"/>
+<stringAttribute key="org.eclipse.cdt.launch.PROJECT_ATTR" value="RT-STM32F429-DISCOVERY-TRIBUF"/>
+<booleanAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_AUTO_ATTR" value="true"/>
+<stringAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_ID_ATTR" value="0.114656749"/>
+<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
+<listEntry value="/RT-STM32F429-DISCOVERY-TRIBUF"/>
+</listAttribute>
+<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
+<listEntry value="4"/>
+</listAttribute>
+<listAttribute key="org.eclipse.debug.ui.favoriteGroups">
+<listEntry value="org.eclipse.debug.ui.launchGroup.debug"/>
+</listAttribute>
+</launchConfiguration>
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/halconf.h b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/halconf.h
new file mode 100644
index 0000000..cdc503f
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/halconf.h
@@ -0,0 +1,340 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed 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.
+*/
+
+/**
+ * @file    templates/halconf.h
+ * @brief   HAL configuration header.
+ * @details HAL configuration file, this file allows to enable or disable the
+ *          various device drivers from your application. You may also use
+ *          this file in order to override the device drivers default settings.
+ *
+ * @addtogroup HAL_CONF
+ * @{
+ */
+
+#ifndef _HALCONF_H_
+#define _HALCONF_H_
+
+#include "mcuconf.h"
+
+/**
+ * @brief   Enables the PAL subsystem.
+ */
+#if !defined(HAL_USE_PAL) || defined(__DOXYGEN__)
+#define HAL_USE_PAL                 TRUE
+#endif
+
+/**
+ * @brief   Enables the ADC subsystem.
+ */
+#if !defined(HAL_USE_ADC) || defined(__DOXYGEN__)
+#define HAL_USE_ADC                 FALSE
+#endif
+
+/**
+ * @brief   Enables the CAN subsystem.
+ */
+#if !defined(HAL_USE_CAN) || defined(__DOXYGEN__)
+#define HAL_USE_CAN                 FALSE
+#endif
+
+/**
+ * @brief   Enables the DAC subsystem.
+ */
+#if !defined(HAL_USE_DAC) || defined(__DOXYGEN__)
+#define HAL_USE_DAC                 FALSE
+#endif
+
+/**
+ * @brief   Enables the EXT subsystem.
+ */
+#if !defined(HAL_USE_EXT) || defined(__DOXYGEN__)
+#define HAL_USE_EXT                 FALSE
+#endif
+
+/**
+ * @brief   Enables the GPT subsystem.
+ */
+#if !defined(HAL_USE_GPT) || defined(__DOXYGEN__)
+#define HAL_USE_GPT                 FALSE
+#endif
+
+/**
+ * @brief   Enables the I2C subsystem.
+ */
+#if !defined(HAL_USE_I2C) || defined(__DOXYGEN__)
+#define HAL_USE_I2C                 FALSE
+#endif
+
+/**
+ * @brief   Enables the I2S subsystem.
+ */
+#if !defined(HAL_USE_I2S) || defined(__DOXYGEN__)
+#define HAL_USE_I2S                 FALSE
+#endif
+
+/**
+ * @brief   Enables the ICU subsystem.
+ */
+#if !defined(HAL_USE_ICU) || defined(__DOXYGEN__)
+#define HAL_USE_ICU                 FALSE
+#endif
+
+/**
+ * @brief   Enables the MAC subsystem.
+ */
+#if !defined(HAL_USE_MAC) || defined(__DOXYGEN__)
+#define HAL_USE_MAC                 FALSE
+#endif
+
+/**
+ * @brief   Enables the MMC_SPI subsystem.
+ */
+#if !defined(HAL_USE_MMC_SPI) || defined(__DOXYGEN__)
+#define HAL_USE_MMC_SPI             FALSE
+#endif
+
+/**
+ * @brief   Enables the PWM subsystem.
+ */
+#if !defined(HAL_USE_PWM) || defined(__DOXYGEN__)
+#define HAL_USE_PWM                 FALSE
+#endif
+
+/**
+ * @brief   Enables the RTC subsystem.
+ */
+#if !defined(HAL_USE_RTC) || defined(__DOXYGEN__)
+#define HAL_USE_RTC                 FALSE
+#endif
+
+/**
+ * @brief   Enables the SDC subsystem.
+ */
+#if !defined(HAL_USE_SDC) || defined(__DOXYGEN__)
+#define HAL_USE_SDC                 FALSE
+#endif
+
+/**
+ * @brief   Enables the SERIAL subsystem.
+ */
+#if !defined(HAL_USE_SERIAL) || defined(__DOXYGEN__)
+#define HAL_USE_SERIAL              TRUE
+#endif
+
+/**
+ * @brief   Enables the SERIAL over USB subsystem.
+ */
+#if !defined(HAL_USE_SERIAL_USB) || defined(__DOXYGEN__)
+#define HAL_USE_SERIAL_USB          FALSE
+#endif
+
+/**
+ * @brief   Enables the SPI subsystem.
+ */
+#if !defined(HAL_USE_SPI) || defined(__DOXYGEN__)
+#define HAL_USE_SPI                 TRUE
+#endif
+
+/**
+ * @brief   Enables the UART subsystem.
+ */
+#if !defined(HAL_USE_UART) || defined(__DOXYGEN__)
+#define HAL_USE_UART                FALSE
+#endif
+
+/**
+ * @brief   Enables the USB subsystem.
+ */
+#if !defined(HAL_USE_USB) || defined(__DOXYGEN__)
+#define HAL_USE_USB                 FALSE
+#endif
+
+/*===========================================================================*/
+/* ADC driver related settings.                                              */
+/*===========================================================================*/
+
+/**
+ * @brief   Enables synchronous APIs.
+ * @note    Disabling this option saves both code and data space.
+ */
+#if !defined(ADC_USE_WAIT) || defined(__DOXYGEN__)
+#define ADC_USE_WAIT                TRUE
+#endif
+
+/**
+ * @brief   Enables the @p adcAcquireBus() and @p adcReleaseBus() APIs.
+ * @note    Disabling this option saves both code and data space.
+ */
+#if !defined(ADC_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
+#define ADC_USE_MUTUAL_EXCLUSION    TRUE
+#endif
+
+/*===========================================================================*/
+/* CAN driver related settings.                                              */
+/*===========================================================================*/
+
+/**
+ * @brief   Sleep mode related APIs inclusion switch.
+ */
+#if !defined(CAN_USE_SLEEP_MODE) || defined(__DOXYGEN__)
+#define CAN_USE_SLEEP_MODE          TRUE
+#endif
+
+/*===========================================================================*/
+/* I2C driver related settings.                                              */
+/*===========================================================================*/
+
+/**
+ * @brief   Enables the mutual exclusion APIs on the I2C bus.
+ */
+#if !defined(I2C_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
+#define I2C_USE_MUTUAL_EXCLUSION    TRUE
+#endif
+
+/*===========================================================================*/
+/* MAC driver related settings.                                              */
+/*===========================================================================*/
+
+/**
+ * @brief   Enables an event sources for incoming packets.
+ */
+#if !defined(MAC_USE_ZERO_COPY) || defined(__DOXYGEN__)
+#define MAC_USE_ZERO_COPY           FALSE
+#endif
+
+/**
+ * @brief   Enables an event sources for incoming packets.
+ */
+#if !defined(MAC_USE_EVENTS) || defined(__DOXYGEN__)
+#define MAC_USE_EVENTS              TRUE
+#endif
+
+/*===========================================================================*/
+/* MMC_SPI driver related settings.                                          */
+/*===========================================================================*/
+
+/**
+ * @brief   Delays insertions.
+ * @details If enabled this options inserts delays into the MMC waiting
+ *          routines releasing some extra CPU time for the threads with
+ *          lower priority, this may slow down the driver a bit however.
+ *          This option is recommended also if the SPI driver does not
+ *          use a DMA channel and heavily loads the CPU.
+ */
+#if !defined(MMC_NICE_WAITING) || defined(__DOXYGEN__)
+#define MMC_NICE_WAITING            TRUE
+#endif
+
+/*===========================================================================*/
+/* SDC driver related settings.                                              */
+/*===========================================================================*/
+
+/**
+ * @brief   Number of initialization attempts before rejecting the card.
+ * @note    Attempts are performed at 10mS intervals.
+ */
+#if !defined(SDC_INIT_RETRY) || defined(__DOXYGEN__)
+#define SDC_INIT_RETRY              100
+#endif
+
+/**
+ * @brief   Include support for MMC cards.
+ * @note    MMC support is not yet implemented so this option must be kept
+ *          at @p FALSE.
+ */
+#if !defined(SDC_MMC_SUPPORT) || defined(__DOXYGEN__)
+#define SDC_MMC_SUPPORT             FALSE
+#endif
+
+/**
+ * @brief   Delays insertions.
+ * @details If enabled this options inserts delays into the MMC waiting
+ *          routines releasing some extra CPU time for the threads with
+ *          lower priority, this may slow down the driver a bit however.
+ */
+#if !defined(SDC_NICE_WAITING) || defined(__DOXYGEN__)
+#define SDC_NICE_WAITING            TRUE
+#endif
+
+/*===========================================================================*/
+/* SERIAL driver related settings.                                           */
+/*===========================================================================*/
+
+/**
+ * @brief   Default bit rate.
+ * @details Configuration parameter, this is the baud rate selected for the
+ *          default configuration.
+ */
+#if !defined(SERIAL_DEFAULT_BITRATE) || defined(__DOXYGEN__)
+#define SERIAL_DEFAULT_BITRATE      38400
+#endif
+
+/**
+ * @brief   Serial buffers size.
+ * @details Configuration parameter, you can change the depth of the queue
+ *          buffers depending on the requirements of your application.
+ * @note    The default is 64 bytes for both the transmission and receive
+ *          buffers.
+ */
+#if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__)
+#define SERIAL_BUFFERS_SIZE         16
+#endif
+
+/*===========================================================================*/
+/* SERIAL_USB driver related setting.                                        */
+/*===========================================================================*/
+
+/**
+ * @brief   Serial over USB buffers size.
+ * @details Configuration parameter, the buffer size must be a multiple of
+ *          the USB data endpoint maximum packet size.
+ * @note    The default is 64 bytes for both the transmission and receive
+ *          buffers.
+ */
+#if !defined(SERIAL_USB_BUFFERS_SIZE) || defined(__DOXYGEN__)
+#define SERIAL_USB_BUFFERS_SIZE     256
+#endif
+
+/*===========================================================================*/
+/* SPI driver related settings.                                              */
+/*===========================================================================*/
+
+/**
+ * @brief   Enables synchronous APIs.
+ * @note    Disabling this option saves both code and data space.
+ */
+#if !defined(SPI_USE_WAIT) || defined(__DOXYGEN__)
+#define SPI_USE_WAIT                TRUE
+#endif
+
+/**
+ * @brief   Enables the @p spiAcquireBus() and @p spiReleaseBus() APIs.
+ * @note    Disabling this option saves both code and data space.
+ */
+#if !defined(SPI_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
+#define SPI_USE_MUTUAL_EXCLUSION    TRUE
+#endif
+
+/*===========================================================================*/
+/* Community drivers' includes                                               */
+/*===========================================================================*/
+
+#include "halconf_community.h"
+
+#endif /* _HALCONF_H_ */
+
+/** @} */
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/halconf_community.h b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/halconf_community.h
new file mode 100644
index 0000000..44e89df
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/halconf_community.h
@@ -0,0 +1,70 @@
+/*
+    ChibiOS - Copyright (C) 2014 Uladzimir Pylinsky aka barthess
+
+    Licensed 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.
+*/
+
+#ifndef _HALCONF_COMMUNITY_H_
+#define _HALCONF_COMMUNITY_H_
+
+/**
+ * @brief   Enables the community overlay.
+ */
+#if !defined(HAL_USE_COMMUNITY) || defined(__DOXYGEN__)
+#define HAL_USE_COMMUNITY           TRUE
+#endif
+
+/**
+ * @brief   Enables the NAND subsystem.
+ */
+#if !defined(HAL_USE_NAND) || defined(__DOXYGEN__)
+#define HAL_USE_NAND                FALSE
+#endif
+
+/**
+ * @brief   Enables the 1-wire subsystem.
+ */
+#if !defined(HAL_USE_ONEWIRE) || defined(__DOXYGEN__)
+#define HAL_USE_ONEWIRE             FALSE
+#endif
+
+/*===========================================================================*/
+/* FSMCNAND driver related settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Enables the @p nandAcquireBus() and @p nanReleaseBus() APIs.
+ * @note    Disabling this option saves both code and data space.
+ */
+#if !defined(NAND_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
+#define NAND_USE_MUTUAL_EXCLUSION   TRUE
+#endif
+
+/*===========================================================================*/
+/* 1-wire driver related settings.                                           */
+/*===========================================================================*/
+/**
+ * @brief   Enables strong pull up feature.
+ * @note    Disabling this option saves both code and data space.
+ */
+#define ONEWIRE_USE_STRONG_PULLUP   FALSE
+
+/**
+ * @brief   Enables search ROM feature.
+ * @note    Disabling this option saves both code and data space.
+ */
+#define ONEWIRE_USE_SEARCH_ROM      TRUE
+
+#endif /* _HALCONF_COMMUNITY_H_ */
+
+/** @} */
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/main.c b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/main.c
new file mode 100644
index 0000000..5545a74
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/main.c
@@ -0,0 +1,212 @@
+/*
+    Copyright (C) 2013-2015 Andrea Zoppi
+
+    Licensed 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 "ch.h"
+#include "hal.h"
+
+#include "chprintf.h"
+#if HAL_USE_SERIAL_USB
+#include "usbcfg.h"
+#endif
+
+#include "tribuf.h"
+
+
+/*===========================================================================*/
+/* TriBuf related.                                                           */
+/*===========================================================================*/
+
+#define WRITE_DELAY         2
+#define READ_DELAY          1
+
+#define WRITER_WA_SIZE      256
+
+static thread_t *writertp;
+
+static tribuf_t tribuf;
+static char buffers[3];
+
+static const char text[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ\r\n";
+
+/*
+ * Reads from the front buffer.
+ */
+static char read_front(void) {
+
+  const char *front;
+  msg_t error;
+
+  chSysLock();
+  error = tribufWaitReadyTimeoutS(&tribuf, MS2ST(1000));
+  if (error != MSG_OK)
+    chSysHalt("ERROR: read_front timeout");
+  tribufSwapFrontI(&tribuf);
+  front = (const char *)tribufGetFrontI(&tribuf);
+  chSysUnlock();
+  return *front;
+}
+
+/*
+ * Overwrites the back buffer with the provided character.
+ */
+static void write_back(char c) {
+
+  char *back;
+
+  chSysLock();
+  back = (char *)tribufGetBackI(&tribuf);
+  *back = c;
+  tribufSwapBackI(&tribuf);
+  chSysUnlock();
+}
+
+/*
+ * Overwrites the back buffer with a fixed text, character by character.
+ */
+static THD_WORKING_AREA(writer_wa, WRITER_WA_SIZE);
+static THD_FUNCTION(writer_thread, arg) {
+
+  const uint32_t delay = (uint32_t)(msg_t)arg;
+  size_t i;
+
+  for (;;) {
+    for (i = 0; i < sizeof(text); ++i) {
+      write_back(text[i]);
+      chThdSleepMilliseconds(delay);
+    }
+  }
+}
+
+/*===========================================================================*/
+/* MISC.                                                                     */
+/*===========================================================================*/
+
+#if HAL_USE_SERIAL_USB
+/* Virtual serial port over USB.*/
+SerialUSBDriver SDU1;
+static BaseSequentialStream *const chout = (BaseSequentialStream *)&SDU1;
+#else
+static BaseSequentialStream *const chout = (BaseSequentialStream *)&SD1;
+#endif
+
+/*
+ * Red LED blinker thread, times are in milliseconds.
+ */
+static THD_WORKING_AREA(waThread1, 128);
+static THD_FUNCTION(Thread1, arg) {
+
+  (void)arg;
+  chRegSetThreadName("blinker1");
+  while (true) {
+    palClearPad(GPIOG, GPIOG_LED4_RED);
+    chThdSleepMilliseconds(500);
+    palSetPad(GPIOG, GPIOG_LED4_RED);
+    chThdSleepMilliseconds(500);
+  }
+}
+
+/*
+ * Green LED blinker thread, times are in milliseconds.
+ */
+static THD_WORKING_AREA(waThread2, 128);
+static THD_FUNCTION(Thread2, arg) {
+
+  (void)arg;
+  chRegSetThreadName("blinker2");
+  while (true) {
+    palClearPad(GPIOG, GPIOG_LED3_GREEN);
+    chThdSleepMilliseconds(250);
+    palSetPad(GPIOG, GPIOG_LED3_GREEN);
+    chThdSleepMilliseconds(250);
+  }
+}
+
+/*===========================================================================*/
+/* Initialization and main thread.                                           */
+/*===========================================================================*/
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+  /*
+   * System initializations.
+   * - HAL initialization, this also initializes the configured device drivers
+   *   and performs the board-specific initializations.
+   * - Kernel initialization, the main() function becomes a thread and the
+   *   RTOS is active.
+   */
+  halInit();
+  chSysInit();
+
+#if HAL_USE_SERIAL_USB
+  /*
+   * Initializes a serial-over-USB CDC driver.
+   */
+  sduObjectInit(&SDU1);
+  sduStart(&SDU1, &serusbcfg);
+
+  /*
+   * Activates the USB driver and then the USB bus pull-up on D+.
+   * Note, a delay is inserted in order to not have to disconnect the cable
+   * after a reset.
+   */
+  usbDisconnectBus(serusbcfg.usbp);
+  chThdSleepMilliseconds(1000);
+  usbStart(serusbcfg.usbp, &usbcfg);
+  usbConnectBus(serusbcfg.usbp);
+#else
+  /*
+   * Initializes serial port.
+   */
+  sdStart(&SD1, NULL);
+#endif /* HAL_USE_SERIAL_USB */
+
+  /*
+   * Triple buffer handler initialization.
+   */
+  tribufObjectInit(&tribuf, &buffers[0], &buffers[1], &buffers[2]);
+
+  /*
+   * Creating the blinker threads.
+   */
+  chThdCreateStatic(waThread1, sizeof(waThread1),
+                    NORMALPRIO + 10, Thread1, NULL);
+  chThdCreateStatic(waThread2, sizeof(waThread2),
+                    NORMALPRIO + 10, Thread2, NULL);
+
+  /*
+   * Writer thread started.
+   */
+  writertp = chThdCreateStatic(writer_wa, sizeof(writer_wa),
+                               (NORMALPRIO + 1),
+                               writer_thread, (void *)WRITE_DELAY);
+
+  /*
+   * Reads from the front buffer.
+   */
+  while (!chThdTerminatedX(writertp)) {
+    chprintf(chout, "%c", read_front());
+    chThdSleepMilliseconds(READ_DELAY);
+  }
+
+  chThdRelease(writertp);
+  for (;;)
+    chThdSleepMilliseconds(100);
+  return 0;
+}
+
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/mcuconf.h b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/mcuconf.h
new file mode 100644
index 0000000..197312a
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/mcuconf.h
@@ -0,0 +1,360 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed 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.
+*/
+
+#ifndef _MCUCONF_H_
+#define _MCUCONF_H_
+
+/*
+ * STM32F4xx drivers configuration.
+ * The following settings override the default settings present in
+ * the various device driver implementation headers.
+ * Note that the settings for each driver only have effect if the whole
+ * driver is enabled in halconf.h.
+ *
+ * IRQ priorities:
+ * 15...0       Lowest...Highest.
+ *
+ * DMA priorities:
+ * 0...3        Lowest...Highest.
+ */
+
+#define STM32F4xx_MCUCONF
+
+/*
+ * HAL driver system settings.
+ */
+#define STM32_NO_INIT                       FALSE
+#define STM32_HSI_ENABLED                   TRUE
+#define STM32_LSI_ENABLED                   TRUE
+#define STM32_HSE_ENABLED                   TRUE
+#define STM32_LSE_ENABLED                   FALSE
+#define STM32_CLOCK48_REQUIRED              TRUE
+#define STM32_SW                            STM32_SW_PLL
+#define STM32_PLLSRC                        STM32_PLLSRC_HSE
+#define STM32_PLLM_VALUE                    8
+#define STM32_PLLN_VALUE                    336
+#define STM32_PLLP_VALUE                    2
+#define STM32_PLLQ_VALUE                    7
+#define STM32_HPRE                          STM32_HPRE_DIV1
+#define STM32_PPRE1                         STM32_PPRE1_DIV4
+#define STM32_PPRE2                         STM32_PPRE2_DIV2
+#define STM32_RTCSEL                        STM32_RTCSEL_LSI
+#define STM32_RTCPRE_VALUE                  8
+#define STM32_MCO1SEL                       STM32_MCO1SEL_HSI
+#define STM32_MCO1PRE                       STM32_MCO1PRE_DIV1
+#define STM32_MCO2SEL                       STM32_MCO2SEL_SYSCLK
+#define STM32_MCO2PRE                       STM32_MCO2PRE_DIV5
+#define STM32_I2SSRC                        STM32_I2SSRC_CKIN
+#define STM32_PLLI2SN_VALUE                 192
+#define STM32_PLLI2SR_VALUE                 5
+#define STM32_PVD_ENABLE                    FALSE
+#define STM32_PLS                           STM32_PLS_LEV0
+#define STM32_BKPRAM_ENABLE                 FALSE
+#define STM32_SAISRC                        STM32_SAISRC_PLL
+#define STM32_PLLSAIN_VALUE                 192
+#define STM32_PLLSAIQ_VALUE                 7
+#define STM32_PLLSAIR_VALUE                 4
+#define STM32_PLLSAIR_POST                  STM32_SAIR_DIV4
+
+/*
+ * ADC driver system settings.
+ */
+#define STM32_ADC_ADCPRE                    ADC_CCR_ADCPRE_DIV4
+#define STM32_ADC_USE_ADC1                  FALSE
+#define STM32_ADC_USE_ADC2                  FALSE
+#define STM32_ADC_USE_ADC3                  FALSE
+#define STM32_ADC_ADC1_DMA_STREAM           STM32_DMA_STREAM_ID(2, 4)
+#define STM32_ADC_ADC2_DMA_STREAM           STM32_DMA_STREAM_ID(2, 2)
+#define STM32_ADC_ADC3_DMA_STREAM           STM32_DMA_STREAM_ID(2, 1)
+#define STM32_ADC_ADC1_DMA_PRIORITY         2
+#define STM32_ADC_ADC2_DMA_PRIORITY         2
+#define STM32_ADC_ADC3_DMA_PRIORITY         2
+#define STM32_ADC_IRQ_PRIORITY              6
+#define STM32_ADC_ADC1_DMA_IRQ_PRIORITY     6
+#define STM32_ADC_ADC2_DMA_IRQ_PRIORITY     6
+#define STM32_ADC_ADC3_DMA_IRQ_PRIORITY     6
+
+/*
+ * CAN driver system settings.
+ */
+#define STM32_CAN_USE_CAN1                  FALSE
+#define STM32_CAN_USE_CAN2                  FALSE
+#define STM32_CAN_CAN1_IRQ_PRIORITY         11
+#define STM32_CAN_CAN2_IRQ_PRIORITY         11
+
+/*
+ * DAC driver system settings.
+ */
+#define STM32_DAC_DUAL_MODE                 FALSE
+#define STM32_DAC_USE_DAC1_CH1              FALSE
+#define STM32_DAC_USE_DAC1_CH2              FALSE
+#define STM32_DAC_DAC1_CH1_IRQ_PRIORITY     10
+#define STM32_DAC_DAC1_CH2_IRQ_PRIORITY     10
+#define STM32_DAC_DAC1_CH1_DMA_PRIORITY     2
+#define STM32_DAC_DAC1_CH2_DMA_PRIORITY     2
+#define STM32_DAC_DAC1_CH1_DMA_STREAM       STM32_DMA_STREAM_ID(1, 5)
+#define STM32_DAC_DAC1_CH2_DMA_STREAM       STM32_DMA_STREAM_ID(1, 6)
+
+/*
+ * EXT driver system settings.
+ */
+#define STM32_EXT_EXTI0_IRQ_PRIORITY        6
+#define STM32_EXT_EXTI1_IRQ_PRIORITY        6
+#define STM32_EXT_EXTI2_IRQ_PRIORITY        6
+#define STM32_EXT_EXTI3_IRQ_PRIORITY        6
+#define STM32_EXT_EXTI4_IRQ_PRIORITY        6
+#define STM32_EXT_EXTI5_9_IRQ_PRIORITY      6
+#define STM32_EXT_EXTI10_15_IRQ_PRIORITY    6
+#define STM32_EXT_EXTI16_IRQ_PRIORITY       6
+#define STM32_EXT_EXTI17_IRQ_PRIORITY       15
+#define STM32_EXT_EXTI18_IRQ_PRIORITY       6
+#define STM32_EXT_EXTI19_IRQ_PRIORITY       6
+#define STM32_EXT_EXTI20_IRQ_PRIORITY       6
+#define STM32_EXT_EXTI21_IRQ_PRIORITY       15
+#define STM32_EXT_EXTI22_IRQ_PRIORITY       15
+
+/*
+ * GPT driver system settings.
+ */
+#define STM32_GPT_USE_TIM1                  FALSE
+#define STM32_GPT_USE_TIM2                  FALSE
+#define STM32_GPT_USE_TIM3                  FALSE
+#define STM32_GPT_USE_TIM4                  FALSE
+#define STM32_GPT_USE_TIM5                  FALSE
+#define STM32_GPT_USE_TIM6                  FALSE
+#define STM32_GPT_USE_TIM7                  FALSE
+#define STM32_GPT_USE_TIM8                  FALSE
+#define STM32_GPT_USE_TIM9                  FALSE
+#define STM32_GPT_USE_TIM11                 FALSE
+#define STM32_GPT_USE_TIM12                 FALSE
+#define STM32_GPT_USE_TIM14                 FALSE
+#define STM32_GPT_TIM1_IRQ_PRIORITY         7
+#define STM32_GPT_TIM2_IRQ_PRIORITY         7
+#define STM32_GPT_TIM3_IRQ_PRIORITY         7
+#define STM32_GPT_TIM4_IRQ_PRIORITY         7
+#define STM32_GPT_TIM5_IRQ_PRIORITY         7
+#define STM32_GPT_TIM6_IRQ_PRIORITY         7
+#define STM32_GPT_TIM7_IRQ_PRIORITY         7
+#define STM32_GPT_TIM8_IRQ_PRIORITY         7
+#define STM32_GPT_TIM9_IRQ_PRIORITY         7
+#define STM32_GPT_TIM11_IRQ_PRIORITY        7
+#define STM32_GPT_TIM12_IRQ_PRIORITY        7
+#define STM32_GPT_TIM14_IRQ_PRIORITY        7
+
+/*
+ * I2C driver system settings.
+ */
+#define STM32_I2C_USE_I2C1                  FALSE
+#define STM32_I2C_USE_I2C2                  FALSE
+#define STM32_I2C_USE_I2C3                  FALSE
+#define STM32_I2C_BUSY_TIMEOUT              50
+#define STM32_I2C_I2C1_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 0)
+#define STM32_I2C_I2C1_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 6)
+#define STM32_I2C_I2C2_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 2)
+#define STM32_I2C_I2C2_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 7)
+#define STM32_I2C_I2C3_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 2)
+#define STM32_I2C_I2C3_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 4)
+#define STM32_I2C_I2C1_IRQ_PRIORITY         5
+#define STM32_I2C_I2C2_IRQ_PRIORITY         5
+#define STM32_I2C_I2C3_IRQ_PRIORITY         5
+#define STM32_I2C_I2C1_DMA_PRIORITY         3
+#define STM32_I2C_I2C2_DMA_PRIORITY         3
+#define STM32_I2C_I2C3_DMA_PRIORITY         3
+#define STM32_I2C_DMA_ERROR_HOOK(i2cp)      osalSysHalt("DMA failure")
+
+/*
+ * ICU driver system settings.
+ */
+#define STM32_ICU_USE_TIM1                  FALSE
+#define STM32_ICU_USE_TIM2                  FALSE
+#define STM32_ICU_USE_TIM3                  FALSE
+#define STM32_ICU_USE_TIM4                  FALSE
+#define STM32_ICU_USE_TIM5                  FALSE
+#define STM32_ICU_USE_TIM8                  FALSE
+#define STM32_ICU_USE_TIM9                  FALSE
+#define STM32_ICU_TIM1_IRQ_PRIORITY         7
+#define STM32_ICU_TIM2_IRQ_PRIORITY         7
+#define STM32_ICU_TIM3_IRQ_PRIORITY         7
+#define STM32_ICU_TIM4_IRQ_PRIORITY         7
+#define STM32_ICU_TIM5_IRQ_PRIORITY         7
+#define STM32_ICU_TIM8_IRQ_PRIORITY         7
+#define STM32_ICU_TIM9_IRQ_PRIORITY         7
+
+/*
+ * MAC driver system settings.
+ */
+#define STM32_MAC_TRANSMIT_BUFFERS          2
+#define STM32_MAC_RECEIVE_BUFFERS           4
+#define STM32_MAC_BUFFERS_SIZE              1522
+#define STM32_MAC_PHY_TIMEOUT               100
+#define STM32_MAC_ETH1_CHANGE_PHY_STATE     TRUE
+#define STM32_MAC_ETH1_IRQ_PRIORITY         13
+#define STM32_MAC_IP_CHECKSUM_OFFLOAD       0
+
+/*
+ * PWM driver system settings.
+ */
+#define STM32_PWM_USE_ADVANCED              FALSE
+#define STM32_PWM_USE_TIM1                  FALSE
+#define STM32_PWM_USE_TIM2                  FALSE
+#define STM32_PWM_USE_TIM3                  FALSE
+#define STM32_PWM_USE_TIM4                  FALSE
+#define STM32_PWM_USE_TIM5                  FALSE
+#define STM32_PWM_USE_TIM8                  FALSE
+#define STM32_PWM_USE_TIM9                  FALSE
+#define STM32_PWM_TIM1_IRQ_PRIORITY         7
+#define STM32_PWM_TIM2_IRQ_PRIORITY         7
+#define STM32_PWM_TIM3_IRQ_PRIORITY         7
+#define STM32_PWM_TIM4_IRQ_PRIORITY         7
+#define STM32_PWM_TIM5_IRQ_PRIORITY         7
+#define STM32_PWM_TIM8_IRQ_PRIORITY         7
+#define STM32_PWM_TIM9_IRQ_PRIORITY         7
+
+/*
+ * SDC driver system settings.
+ */
+#define STM32_SDC_SDIO_DMA_PRIORITY         3
+#define STM32_SDC_SDIO_IRQ_PRIORITY         9
+#define STM32_SDC_WRITE_TIMEOUT_MS          250
+#define STM32_SDC_READ_TIMEOUT_MS           25
+#define STM32_SDC_CLOCK_ACTIVATION_DELAY    10
+#define STM32_SDC_SDIO_UNALIGNED_SUPPORT    TRUE
+#define STM32_SDC_SDIO_DMA_STREAM           STM32_DMA_STREAM_ID(2, 3)
+
+/*
+ * SERIAL driver system settings.
+ */
+#define STM32_SERIAL_USE_USART1             TRUE
+#define STM32_SERIAL_USE_USART2             FALSE
+#define STM32_SERIAL_USE_USART3             FALSE
+#define STM32_SERIAL_USE_UART4              FALSE
+#define STM32_SERIAL_USE_UART5              FALSE
+#define STM32_SERIAL_USE_USART6             FALSE
+#define STM32_SERIAL_USART1_PRIORITY        12
+#define STM32_SERIAL_USART2_PRIORITY        12
+#define STM32_SERIAL_USART3_PRIORITY        12
+#define STM32_SERIAL_UART4_PRIORITY         12
+#define STM32_SERIAL_UART5_PRIORITY         12
+#define STM32_SERIAL_USART6_PRIORITY        12
+
+/*
+ * SPI driver system settings.
+ */
+#define STM32_SPI_USE_SPI1                  FALSE
+#define STM32_SPI_USE_SPI2                  FALSE
+#define STM32_SPI_USE_SPI3                  FALSE
+#define STM32_SPI_USE_SPI4                  FALSE
+#define STM32_SPI_USE_SPI5                  TRUE
+#define STM32_SPI_USE_SPI6                  FALSE
+#define STM32_SPI_SPI1_RX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 0)
+#define STM32_SPI_SPI1_TX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 3)
+#define STM32_SPI_SPI2_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 3)
+#define STM32_SPI_SPI2_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 4)
+#define STM32_SPI_SPI3_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 0)
+#define STM32_SPI_SPI3_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 7)
+#define STM32_SPI_SPI4_RX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 0)
+#define STM32_SPI_SPI4_TX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 1)
+#define STM32_SPI_SPI5_RX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 3)
+#define STM32_SPI_SPI5_TX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 4)
+#define STM32_SPI_SPI6_RX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 6)
+#define STM32_SPI_SPI6_TX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 5)
+#define STM32_SPI_SPI1_DMA_PRIORITY         1
+#define STM32_SPI_SPI2_DMA_PRIORITY         1
+#define STM32_SPI_SPI3_DMA_PRIORITY         1
+#define STM32_SPI_SPI4_DMA_PRIORITY         1
+#define STM32_SPI_SPI5_DMA_PRIORITY         1
+#define STM32_SPI_SPI6_DMA_PRIORITY         1
+#define STM32_SPI_SPI1_IRQ_PRIORITY         10
+#define STM32_SPI_SPI2_IRQ_PRIORITY         10
+#define STM32_SPI_SPI3_IRQ_PRIORITY         10
+#define STM32_SPI_SPI4_IRQ_PRIORITY         10
+#define STM32_SPI_SPI5_IRQ_PRIORITY         10
+#define STM32_SPI_SPI6_IRQ_PRIORITY         10
+#define STM32_SPI_DMA_ERROR_HOOK(spip)      osalSysHalt("DMA failure")
+
+/*
+ * ST driver system settings.
+ */
+#define STM32_ST_IRQ_PRIORITY               8
+#define STM32_ST_USE_TIMER                  2
+
+/*
+ * UART driver system settings.
+ */
+#define STM32_UART_USE_USART1               FALSE
+#define STM32_UART_USE_USART2               FALSE
+#define STM32_UART_USE_USART3               FALSE
+#define STM32_UART_USE_UART4                FALSE
+#define STM32_UART_USE_UART5                FALSE
+#define STM32_UART_USE_USART6               FALSE
+#define STM32_UART_USART1_RX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 5)
+#define STM32_UART_USART1_TX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 7)
+#define STM32_UART_USART2_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 5)
+#define STM32_UART_USART2_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 6)
+#define STM32_UART_USART3_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 1)
+#define STM32_UART_USART3_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 3)
+#define STM32_UART_UART4_RX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 2)
+#define STM32_UART_UART4_TX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 4)
+#define STM32_UART_UART5_RX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 0)
+#define STM32_UART_UART5_TX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 7)
+#define STM32_UART_USART6_RX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 2)
+#define STM32_UART_USART6_TX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 7)
+#define STM32_UART_USART1_IRQ_PRIORITY      12
+#define STM32_UART_USART2_IRQ_PRIORITY      12
+#define STM32_UART_USART3_IRQ_PRIORITY      12
+#define STM32_UART_UART4_IRQ_PRIORITY       12
+#define STM32_UART_UART5_IRQ_PRIORITY       12
+#define STM32_UART_USART6_IRQ_PRIORITY      12
+#define STM32_UART_USART1_DMA_PRIORITY      0
+#define STM32_UART_USART2_DMA_PRIORITY      0
+#define STM32_UART_USART3_DMA_PRIORITY      0
+#define STM32_UART_UART4_DMA_PRIORITY       0
+#define STM32_UART_UART5_DMA_PRIORITY       0
+#define STM32_UART_USART6_DMA_PRIORITY      0
+#define STM32_UART_DMA_ERROR_HOOK(uartp)    osalSysHalt("DMA failure")
+
+/*
+ * USB driver system settings.
+ */
+#define STM32_USB_USE_OTG1                  FALSE
+#define STM32_USB_USE_OTG2                  FALSE
+#define STM32_USB_OTG1_IRQ_PRIORITY         14
+#define STM32_USB_OTG2_IRQ_PRIORITY         14
+#define STM32_USB_OTG1_RX_FIFO_SIZE         512
+#define STM32_USB_OTG2_RX_FIFO_SIZE         1024
+#define STM32_USB_OTG_THREAD_PRIO           LOWPRIO
+#define STM32_USB_OTG_THREAD_STACK_SIZE     128
+#define STM32_USB_OTGFIFO_FILL_BASEPRI      0
+
+/*
+ * LTDC driver system settings.
+ */
+#define STM32_LTDC_USE_LTDC                 TRUE
+#define STM32_LTDC_EV_IRQ_PRIORITY          11
+#define STM32_LTDC_ER_IRQ_PRIORITY          11
+
+/*
+ * DMA2D driver system settings.
+ */
+#define STM32_DMA2D_USE_DMA2D               TRUE
+#define STM32_DMA2D_IRQ_PRIORITY            11
+
+/*
+ * Header for community drivers.
+ */
+#include "mcuconf_community.h"
+
+#endif /* _MCUCONF_H_ */
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/mcuconf_community.h b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/mcuconf_community.h
new file mode 100644
index 0000000..5fd93fb
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/mcuconf_community.h
@@ -0,0 +1,28 @@
+/*
+    ChibiOS/RT - Copyright (C) 2014 Uladzimir Pylinsky aka barthess
+
+    Licensed 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.
+*/
+
+/*
+ * FSMC driver system settings.
+ */
+#define STM32_FSMC_USE_FSMC1                FALSE
+#define STM32_FSMC_FSMC1_IRQ_PRIORITY       10
+
+/*
+ * FSMC SDRAM driver system settings.
+ */
+#define STM32_USE_FSMC_SDRAM                FALSE
+#define STM32_SDRAM_USE_FSMC_SDRAM1         FALSE
+#define STM32_SDRAM_USE_FSMC_SDRAM2         FALSE
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/readme.txt b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/readme.txt
new file mode 100644
index 0000000..7a0b396
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/readme.txt
@@ -0,0 +1,27 @@
+*****************************************************************************
+** ChibiOS/RT port for ARM-Cortex-M4 STM32F429.                            **
+*****************************************************************************
+
+** TARGET **
+
+The demo runs on an ST STM32F429I-Discovery board.
+
+** The Demo **
+
+A simple command shell is activated on virtual serial port SD1.
+TODO
+
+** Build Procedure **
+
+The demo has been tested by using the free Codesourcery GCC-based toolchain
+and YAGARTO. just modify the TRGT line in the makefile in order to use
+different GCC toolchains.
+
+** Notes **
+
+Some files used by the demo are not part of ChibiOS/RT but are copyright of
+ST Microelectronics and are licensed under a different license.
+Also note that not all the files present in the ST library are distributed
+with ChibiOS/RT, you can find the whole library on the ST web site:
+
+                             http://www.st.com
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/usbcfg.c b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/usbcfg.c
new file mode 100644
index 0000000..7da120e
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/usbcfg.c
@@ -0,0 +1,314 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed 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 "ch.h"
+#include "hal.h"
+
+/*
+ * Endpoints to be used for USBD2.
+ */
+#define USBD2_DATA_REQUEST_EP           1
+#define USBD2_DATA_AVAILABLE_EP         1
+#define USBD2_INTERRUPT_REQUEST_EP      2
+
+/*
+ * USB Device Descriptor.
+ */
+static const uint8_t vcom_device_descriptor_data[18] = {
+  USB_DESC_DEVICE       (0x0110,        /* bcdUSB (1.1).                    */
+                         0x02,          /* bDeviceClass (CDC).              */
+                         0x00,          /* bDeviceSubClass.                 */
+                         0x00,          /* bDeviceProtocol.                 */
+                         0x40,          /* bMaxPacketSize.                  */
+                         0x0483,        /* idVendor (ST).                   */
+                         0x5740,        /* idProduct.                       */
+                         0x0200,        /* bcdDevice.                       */
+                         1,             /* iManufacturer.                   */
+                         2,             /* iProduct.                        */
+                         3,             /* iSerialNumber.                   */
+                         1)             /* bNumConfigurations.              */
+};
+
+/*
+ * Device Descriptor wrapper.
+ */
+static const USBDescriptor vcom_device_descriptor = {
+  sizeof vcom_device_descriptor_data,
+  vcom_device_descriptor_data
+};
+
+/* Configuration Descriptor tree for a CDC.*/
+static const uint8_t vcom_configuration_descriptor_data[67] = {
+  /* Configuration Descriptor.*/
+  USB_DESC_CONFIGURATION(67,            /* wTotalLength.                    */
+                         0x02,          /* bNumInterfaces.                  */
+                         0x01,          /* bConfigurationValue.             */
+                         0,             /* iConfiguration.                  */
+                         0xC0,          /* bmAttributes (self powered).     */
+                         50),           /* bMaxPower (100mA).               */
+  /* Interface Descriptor.*/
+  USB_DESC_INTERFACE    (0x00,          /* bInterfaceNumber.                */
+                         0x00,          /* bAlternateSetting.               */
+                         0x01,          /* bNumEndpoints.                   */
+                         0x02,          /* bInterfaceClass (Communications
+                                           Interface Class, CDC section
+                                           4.2).                            */
+                         0x02,          /* bInterfaceSubClass (Abstract
+                                         Control Model, CDC section 4.3).   */
+                         0x01,          /* bInterfaceProtocol (AT commands,
+                                           CDC section 4.4).                */
+                         0),            /* iInterface.                      */
+  /* Header Functional Descriptor (CDC section 5.2.3).*/
+  USB_DESC_BYTE         (5),            /* bLength.                         */
+  USB_DESC_BYTE         (0x24),         /* bDescriptorType (CS_INTERFACE).  */
+  USB_DESC_BYTE         (0x00),         /* bDescriptorSubtype (Header
+                                           Functional Descriptor.           */
+  USB_DESC_BCD          (0x0110),       /* bcdCDC.                          */
+  /* Call Management Functional Descriptor. */
+  USB_DESC_BYTE         (5),            /* bFunctionLength.                 */
+  USB_DESC_BYTE         (0x24),         /* bDescriptorType (CS_INTERFACE).  */
+  USB_DESC_BYTE         (0x01),         /* bDescriptorSubtype (Call Management
+                                           Functional Descriptor).          */
+  USB_DESC_BYTE         (0x00),         /* bmCapabilities (D0+D1).          */
+  USB_DESC_BYTE         (0x01),         /* bDataInterface.                  */
+  /* ACM Functional Descriptor.*/
+  USB_DESC_BYTE         (4),            /* bFunctionLength.                 */
+  USB_DESC_BYTE         (0x24),         /* bDescriptorType (CS_INTERFACE).  */
+  USB_DESC_BYTE         (0x02),         /* bDescriptorSubtype (Abstract
+                                           Control Management Descriptor).  */
+  USB_DESC_BYTE         (0x02),         /* bmCapabilities.                  */
+  /* Union Functional Descriptor.*/
+  USB_DESC_BYTE         (5),            /* bFunctionLength.                 */
+  USB_DESC_BYTE         (0x24),         /* bDescriptorType (CS_INTERFACE).  */
+  USB_DESC_BYTE         (0x06),         /* bDescriptorSubtype (Union
+                                           Functional Descriptor).          */
+  USB_DESC_BYTE         (0x00),         /* bMasterInterface (Communication
+                                           Class Interface).                */
+  USB_DESC_BYTE         (0x01),         /* bSlaveInterface0 (Data Class
+                                           Interface).                      */
+  /* Endpoint 2 Descriptor.*/
+  USB_DESC_ENDPOINT     (USBD2_INTERRUPT_REQUEST_EP|0x80,
+                         0x03,          /* bmAttributes (Interrupt).        */
+                         0x0008,        /* wMaxPacketSize.                  */
+                         0xFF),         /* bInterval.                       */
+  /* Interface Descriptor.*/
+  USB_DESC_INTERFACE    (0x01,          /* bInterfaceNumber.                */
+                         0x00,          /* bAlternateSetting.               */
+                         0x02,          /* bNumEndpoints.                   */
+                         0x0A,          /* bInterfaceClass (Data Class
+                                           Interface, CDC section 4.5).     */
+                         0x00,          /* bInterfaceSubClass (CDC section
+                                           4.6).                            */
+                         0x00,          /* bInterfaceProtocol (CDC section
+                                           4.7).                            */
+                         0x00),         /* iInterface.                      */
+  /* Endpoint 3 Descriptor.*/
+  USB_DESC_ENDPOINT     (USBD2_DATA_AVAILABLE_EP,       /* bEndpointAddress.*/
+                         0x02,          /* bmAttributes (Bulk).             */
+                         0x0040,        /* wMaxPacketSize.                  */
+                         0x00),         /* bInterval.                       */
+  /* Endpoint 1 Descriptor.*/
+  USB_DESC_ENDPOINT     (USBD2_DATA_REQUEST_EP|0x80,    /* bEndpointAddress.*/
+                         0x02,          /* bmAttributes (Bulk).             */
+                         0x0040,        /* wMaxPacketSize.                  */
+                         0x00)          /* bInterval.                       */
+};
+
+/*
+ * Configuration Descriptor wrapper.
+ */
+static const USBDescriptor vcom_configuration_descriptor = {
+  sizeof vcom_configuration_descriptor_data,
+  vcom_configuration_descriptor_data
+};
+
+/*
+ * U.S. English language identifier.
+ */
+static const uint8_t vcom_string0[] = {
+  USB_DESC_BYTE(4),                     /* bLength.                         */
+  USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
+  USB_DESC_WORD(0x0409)                 /* wLANGID (U.S. English).          */
+};
+
+/*
+ * Vendor string.
+ */
+static const uint8_t vcom_string1[] = {
+  USB_DESC_BYTE(38),                    /* bLength.                         */
+  USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
+  'S', 0, 'T', 0, 'M', 0, 'i', 0, 'c', 0, 'r', 0, 'o', 0, 'e', 0,
+  'l', 0, 'e', 0, 'c', 0, 't', 0, 'r', 0, 'o', 0, 'n', 0, 'i', 0,
+  'c', 0, 's', 0
+};
+
+/*
+ * Device Description string.
+ */
+static const uint8_t vcom_string2[] = {
+  USB_DESC_BYTE(56),                    /* bLength.                         */
+  USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
+  'C', 0, 'h', 0, 'i', 0, 'b', 0, 'i', 0, 'O', 0, 'S', 0, '/', 0,
+  'R', 0, 'T', 0, ' ', 0, 'V', 0, 'i', 0, 'r', 0, 't', 0, 'u', 0,
+  'a', 0, 'l', 0, ' ', 0, 'C', 0, 'O', 0, 'M', 0, ' ', 0, 'P', 0,
+  'o', 0, 'r', 0, 't', 0
+};
+
+/*
+ * Serial Number string.
+ */
+static const uint8_t vcom_string3[] = {
+  USB_DESC_BYTE(8),                     /* bLength.                         */
+  USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType.                 */
+  '0' + CH_KERNEL_MAJOR, 0,
+  '0' + CH_KERNEL_MINOR, 0,
+  '0' + CH_KERNEL_PATCH, 0
+};
+
+/*
+ * Strings wrappers array.
+ */
+static const USBDescriptor vcom_strings[] = {
+  {sizeof vcom_string0, vcom_string0},
+  {sizeof vcom_string1, vcom_string1},
+  {sizeof vcom_string2, vcom_string2},
+  {sizeof vcom_string3, vcom_string3}
+};
+
+/*
+ * Handles the GET_DESCRIPTOR callback. All required descriptors must be
+ * handled here.
+ */
+static const USBDescriptor *get_descriptor(USBDriver *usbp,
+                                           uint8_t dtype,
+                                           uint8_t dindex,
+                                           uint16_t lang) {
+
+  (void)usbp;
+  (void)lang;
+  switch (dtype) {
+  case USB_DESCRIPTOR_DEVICE:
+    return &vcom_device_descriptor;
+  case USB_DESCRIPTOR_CONFIGURATION:
+    return &vcom_configuration_descriptor;
+  case USB_DESCRIPTOR_STRING:
+    if (dindex < 4)
+      return &vcom_strings[dindex];
+  }
+  return NULL;
+}
+
+/**
+ * @brief   IN EP1 state.
+ */
+static USBInEndpointState ep1instate;
+
+/**
+ * @brief   OUT EP1 state.
+ */
+static USBOutEndpointState ep1outstate;
+
+/**
+ * @brief   EP1 initialization structure (both IN and OUT).
+ */
+static const USBEndpointConfig ep1config = {
+  USB_EP_MODE_TYPE_BULK,
+  NULL,
+  sduDataTransmitted,
+  sduDataReceived,
+  0x0040,
+  0x0040,
+  &ep1instate,
+  &ep1outstate,
+  2,
+  NULL
+};
+
+/**
+ * @brief   IN EP2 state.
+ */
+static USBInEndpointState ep2instate;
+
+/**
+ * @brief   EP2 initialization structure (IN only).
+ */
+static const USBEndpointConfig ep2config = {
+  USB_EP_MODE_TYPE_INTR,
+  NULL,
+  sduInterruptTransmitted,
+  NULL,
+  0x0010,
+  0x0000,
+  &ep2instate,
+  NULL,
+  1,
+  NULL
+};
+
+/*
+ * Handles the USB driver global events.
+ */
+static void usb_event(USBDriver *usbp, usbevent_t event) {
+  extern SerialUSBDriver SDU1;
+
+  switch (event) {
+  case USB_EVENT_RESET:
+    return;
+  case USB_EVENT_ADDRESS:
+    return;
+  case USB_EVENT_CONFIGURED:
+    chSysLockFromISR();
+
+    /* Enables the endpoints specified into the configuration.
+       Note, this callback is invoked from an ISR so I-Class functions
+       must be used.*/
+    usbInitEndpointI(usbp, USBD2_DATA_REQUEST_EP, &ep1config);
+    usbInitEndpointI(usbp, USBD2_INTERRUPT_REQUEST_EP, &ep2config);
+
+    /* Resetting the state of the CDC subsystem.*/
+    sduConfigureHookI(&SDU1);
+
+    chSysUnlockFromISR();
+    return;
+  case USB_EVENT_SUSPEND:
+    return;
+  case USB_EVENT_WAKEUP:
+    return;
+  case USB_EVENT_STALLED:
+    return;
+  }
+  return;
+}
+
+/*
+ * USB driver configuration.
+ */
+const USBConfig usbcfg = {
+  usb_event,
+  get_descriptor,
+  sduRequestsHook,
+  NULL
+};
+
+/*
+ * Serial over USB driver configuration.
+ */
+const SerialUSBConfig serusbcfg = {
+  &USBD2,
+  USBD2_DATA_REQUEST_EP,
+  USBD2_DATA_AVAILABLE_EP,
+  USBD2_INTERRUPT_REQUEST_EP
+};
diff --git a/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/usbcfg.h b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/usbcfg.h
new file mode 100644
index 0000000..8307241
--- /dev/null
+++ b/demos/STM32/RT-STM32F429-DISCOVERY-TRIBUF/usbcfg.h
@@ -0,0 +1,25 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed 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.
+*/
+
+#ifndef _USBCFG_H_
+#define _USBCFG_H_
+
+extern const USBConfig usbcfg;
+extern SerialUSBConfig serusbcfg;
+
+#endif  /* _USBCFG_H_ */
+
+/** @} */