Add directory structure to support the port to the Kinesis KwikStik-K40

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3845 7fd9a85b-ad96-42d3-883c-3090e2eb8679

17 files changed, 2989 insertions, 0 deletions

diff --git a/nuttx/configs/kwikstik-k40/README.txt b/nuttx/configs/kwikstik-k40/README.txt
new file mode 100644
index 0000000000..5c05f35387
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/README.txt
@@ -0,0 +1,382 @@
+README.txt
+==========
+
+This is the README file for the port of NuttX to the Freescale Kinetis
+KwiStick K40.  Refer to the Freescale web site for further information
+about this part:
+http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=KWIKSTIK-K40
+
+Contents
+========
+
+  o Kinetis KwikStik Features
+  o Development Environment
+  o GNU Toolchain Options
+  o IDEs
+  o NuttX buildroot Toolchain
+  
+Kinetis KwikStik Features:
+=========================
+
+  o Kinetis K40 MCU in 144 LQFP
+    - 100 MHz ARM Cortex-M4 core
+    - 256Kb program flash, 256Kb FlexMemory
+    - Full-speed USB 2.0 device
+    - Low-pwer segment LCD controller
+    - SPI, UART, CAN and more
+  o Large segment LCD display with 306 segments
+  o 2.3mm audio output and 2 micro USB connectors
+  o Omnidirectional microphone and a buzzer
+  o On-board Segger J-Link debugger interface
+  o Infrared communication port
+  o microSD card slot
+  o Capacitive touch sensing interface
+  o Freescale Tower System connectivity for UART, timers, CAN, SPI, I2C, and DAC
+  o Freescale Tower plug-in (TWRPI) socket connectivity for ADC, SPI, I2C, and GPIO
+
+Development Environment
+=======================
+
+  Either Linux or Cygwin on Windows can be used for the development environment.
+  The source has been built only using the GNU toolchain (see below).  Other
+  toolchains will likely cause problems. Testing was performed using the Cygwin
+  environment.
+
+GNU Toolchain Options
+=====================
+
+  The NuttX make system has been modified to support the following different
+  toolchain options.
+
+  1. The CodeSourcery GNU toolchain,
+  2. The devkitARM GNU toolchain,
+  3. Raisonance GNU toolchain, or
+  4. The NuttX buildroot Toolchain (see below).
+
+  All testing has been conducted using the NuttX buildroot toolchain.  However,
+  the make system is setup to default to use the devkitARM toolchain.  To use
+  the CodeSourcery, devkitARM or Raisonance GNU toolchain, you simply need to
+  add one of the following configuration options to your .config (or defconfig)
+  file:
+
+    CONFIG_KINETIS_CODESOURCERYW=y  : CodeSourcery under Windows
+    CONFIG_KINETIS_CODESOURCERYL=y  : CodeSourcery under Linux
+    CONFIG_KINETIS_DEVKITARM=y      : devkitARM under Windows
+    CONFIG_KINETIS_BUILDROOT=y	    : NuttX buildroot under Linux or Cygwin (default)
+
+  If you are not using CONFIG_KINETIS_BUILDROOT, then you may also have to modify
+  the PATH in the setenv.h file if your make cannot find the tools.
+
+  NOTE: the CodeSourcery (for Windows), devkitARM, and Raisonance toolchains are
+  Windows native toolchains.  The CodeSourcey (for Linux) and NuttX buildroot
+  toolchains are Cygwin and/or Linux native toolchains. There are several limitations
+  to using a Windows based toolchain in a Cygwin environment.  The three biggest are:
+
+  1. The Windows toolchain cannot follow Cygwin paths.  Path conversions are
+     performed automatically in the Cygwin makefiles using the 'cygpath' utility
+     but you might easily find some new path problems.  If so, check out 'cygpath -w'
+
+  2. Windows toolchains cannot follow Cygwin symbolic links.  Many symbolic links
+     are used in Nuttx (e.g., include/arch).  The make system works around these
+     problems for the Windows tools by copying directories instead of linking them.
+     But this can also cause some confusion for you:  For example, you may edit
+     a file in a "linked" directory and find that your changes had not effect.
+     That is because you are building the copy of the file in the "fake" symbolic
+     directory.  If you use a Windows toolchain, you should get in the habit of
+     making like this:
+
+       make clean_context all
+
+     An alias in your .bashrc file might make that less painful.
+
+  3. Dependencies are not made when using Windows versions of the GCC.  This is
+     because the dependencies are generated using Windows pathes which do not
+     work with the Cygwin make.
+
+     Support has been added for making dependencies with the windows-native toolchains.
+     That support can be enabled by modifying your Make.defs file as follows:
+
+    -  MKDEP                = $(TOPDIR)/tools/mknulldeps.sh
+    +  MKDEP                = $(TOPDIR)/tools/mkdeps.sh --winpaths "$(TOPDIR)"
+
+     If you have problems with the dependency build (for example, if you are not
+     building on C:), then you may need to modify tools/mkdeps.sh
+
+  NOTE 1: The CodeSourcery toolchain (2009q1) does not work with default optimization
+  level of -Os (See Make.defs).  It will work with -O0, -O1, or -O2, but not with
+  -Os.
+
+  NOTE 2: The devkitARM toolchain includes a version of MSYS make.  Make sure that
+  the paths to Cygwin's /bin and /usr/bin directories appear BEFORE the devkitARM
+  path or will get the wrong version of make.
+
+IDEs
+====
+
+  NuttX is built using command-line make.  It can be used with an IDE, but some
+  effort will be required to create the project.
+  
+  Makefile Build
+  --------------
+  Under Eclipse, it is pretty easy to set up an "empty makefile project" and
+  simply use the NuttX makefile to build the system.  That is almost for free
+  under Linux.  Under Windows, you will need to set up the "Cygwin GCC" empty
+  makefile project in order to work with Windows (Google for "Eclipse Cygwin" -
+  there is a lot of help on the internet).
+
+  Native Build
+  ------------
+  Here are a few tips before you start that effort:
+
+  1) Select the toolchain that you will be using in your .config file
+  2) Start the NuttX build at least one time from the Cygwin command line
+     before trying to create your project.  This is necessary to create
+     certain auto-generated files and directories that will be needed.
+  3) Set up include pathes:  You will need include/, arch/arm/src/k40,
+     arch/arm/src/common, arch/arm/src/cortexm3, and sched/.
+  4) All assembly files need to have the definition option -D __ASSEMBLY__
+     on the command line.
+
+  Startup files will probably cause you some headaches.  The NuttX startup file
+  is arch/arm/src/kinetis/k40_vectors.S.
+
+NuttX buildroot Toolchain
+=========================
+
+  A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
+  be modified to point to the correct path to the Cortex-M4 GCC toolchain (if
+  different from the default in your PATH variable).
+
+  If you have no Cortex-M4 toolchain, one can be downloaded from the NuttX
+  SourceForge download site (https://sourceforge.net/project/showfiles.php?group_id=189573).
+  This GNU toolchain builds and executes in the Linux or Cygwin environment.
+
+  1. You must have already configured Nuttx in <some-dir>/nuttx.
+
+     cd tools
+     ./configure.sh kwikstik-k40/<sub-dir>
+
+  2. Download the latest buildroot package into <some-dir>
+
+  3. unpack the buildroot tarball.  The resulting directory may
+     have versioning information on it like buildroot-x.y.z.  If so,
+     rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.
+
+  4. cd <some-dir>/buildroot
+
+  5. cp configs/cortexm3-defconfig-4.3.3 .config
+
+  6. make oldconfig
+
+  7. make
+
+  8. Edit setenv.h, if necessary, so that the PATH variable includes
+     the path to the newly built binaries.
+
+  See the file configs/README.txt in the buildroot source tree.  That has more
+  detailed PLUS some special instructions that you will need to follow if you are
+  building a Cortex-M4 toolchain for Cygwin under Windows.
+
+KwikStik-K40-specific Configuration Options
+============================================
+
+	CONFIG_ARCH - Identifies the arch/ subdirectory.  This should
+	   be set to:
+
+	   CONFIG_ARCH=arm
+
+	CONFIG_ARCH_family - For use in C code:
+
+	   CONFIG_ARCH_ARM=y
+
+	CONFIG_ARCH_architecture - For use in C code:
+
+	   CONFIG_ARCH_CORTEXM4=y
+
+	CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+
+	   CONFIG_ARCH_CHIP=k40
+
+	CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
+	   chip:
+
+	   CONFIG_ARCH_CHIP_K40X256VLQ100
+
+	CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
+	   hence, the board that supports the particular chip or SoC.
+
+	   CONFIG_ARCH_BOARD=kwikstik-k40 (for the KwikStik-K40 development board)
+
+	CONFIG_ARCH_BOARD_name - For use in C code
+
+	   CONFIG_ARCH_BOARD_KWIKSTIK_K40=y
+
+	CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
+	   of delay loops
+
+	CONFIG_ENDIAN_BIG - define if big endian (default is little
+	   endian)
+
+	CONFIG_DRAM_SIZE - Describes the installed DRAM (SRAM in this case):
+
+	   CONFIG_DRAM_SIZE=0x00010000 (64Kb)
+
+	CONFIG_DRAM_START - The start address of installed DRAM
+
+	   CONFIG_DRAM_START=0x20000000
+
+	CONFIG_DRAM_END - Last address+1 of installed RAM
+
+	   CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+
+	CONFIG_ARCH_IRQPRIO - The Kinetis K40 supports interrupt prioritization
+
+	   CONFIG_ARCH_IRQPRIO=y
+
+	CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
+	   have LEDs
+
+	CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
+	   stack. If defined, this symbol is the size of the interrupt
+	    stack in bytes.  If not defined, the user task stacks will be
+	  used during interrupt handling.
+
+	CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
+
+	CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.
+
+	CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
+	   cause a 100 second delay during boot-up.  This 100 second delay
+	   serves no purpose other than it allows you to calibratre
+	   CONFIG_ARCH_LOOPSPERMSEC.  You simply use a stop watch to measure
+	   the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until
+	   the delay actually is 100 seconds.
+
+  Individual subsystems can be enabled:
+	AHB
+	---
+	CONFIG_KINETIS_DMA1
+	CONFIG_KINETIS_DMA2
+	CONFIG_KINETIS_CRC
+	CONFIG_KINETIS_FSMC
+	CONFIG_KINETIS_SDIO
+
+	APB1
+	----
+	CONFIG_KINETIS_TIM2
+	CONFIG_KINETIS_TIM3
+	CONFIG_KINETIS_TIM4
+	CONFIG_KINETIS_TIM5
+	CONFIG_KINETIS_TIM6
+	CONFIG_KINETIS_TIM7
+	CONFIG_KINETIS_WWDG
+	CONFIG_KINETIS_SPI2
+	CONFIG_KINETIS_SPI4
+	CONFIG_KINETIS_USART2
+	CONFIG_KINETIS_USART3
+	CONFIG_KINETIS_UART4
+	CONFIG_KINETIS_UART5
+	CONFIG_KINETIS_I2C1
+	CONFIG_KINETIS_I2C2
+	CONFIG_KINETIS_USB
+	CONFIG_KINETIS_CAN
+	CONFIG_KINETIS_BKP
+	CONFIG_KINETIS_PWR
+	CONFIG_KINETIS_DAC
+	CONFIG_KINETIS_USB
+
+	APB2
+	----
+	CONFIG_KINETIS_ADC1
+	CONFIG_KINETIS_ADC2
+	CONFIG_KINETIS_TIM1
+	CONFIG_KINETIS_SPI1
+	CONFIG_KINETIS_TIM8
+	CONFIG_KINETIS_USART1
+	CONFIG_KINETIS_ADC3
+
+  Alternate pin mappings (should not be used with the KwikStik-K40 board):
+
+	CONFIG_KINETIS_TIM1_FULL_REMAP
+	CONFIG_KINETIS_TIM1_PARTIAL_REMAP
+	CONFIG_KINETIS_TIM2_FULL_REMAP
+	CONFIG_KINETIS_TIM2_PARTIAL_REMAP_1
+	CONFIG_KINETIS_TIM2_PARTIAL_REMAP_2
+	CONFIG_KINETIS_TIM3_FULL_REMAP
+	CONFIG_KINETIS_TIM3_PARTIAL_REMAP
+	CONFIG_KINETIS_TIM4_REMAP
+	CONFIG_KINETIS_USART1_REMAP
+	CONFIG_KINETIS_USART2_REMAP
+	CONFIG_KINETIS_USART3_FULL_REMAP
+	CONFIG_KINETIS_USART3_PARTIAL_REMAP
+	CONFIG_KINETIS_SPI1_REMAP
+	CONFIG_KINETIS_SPI3_REMAP
+	CONFIG_KINETIS_I2C1_REMAP
+	CONFIG_KINETIS_CAN1_FULL_REMAP
+	CONFIG_KINETIS_CAN1_PARTIAL_REMAP
+	CONFIG_KINETIS_CAN2_REMAP
+
+  Kinetis K40 specific device driver settings
+
+	CONFIG_U[S]ARTn_SERIAL_CONSOLE - selects the USARTn (n=1,2,3) or UART
+           m (m=4,5) for the console and ttys0 (default is the USART1).
+	CONFIG_U[S]ARTn_RXBUFSIZE - Characters are buffered as received.
+	   This specific the size of the receive buffer
+	CONFIG_U[S]ARTn_TXBUFSIZE - Characters are buffered before
+	   being sent.  This specific the size of the transmit buffer
+	CONFIG_U[S]ARTn_BAUD - The configure BAUD of the UART.  Must be
+	CONFIG_U[S]ARTn_BITS - The number of bits.  Must be either 7 or 8.
+	CONFIG_U[S]ARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+	CONFIG_U[S]ARTn_2STOP - Two stop bits
+
+	CONFIG_KINETIS_SPI_INTERRUPTS - Select to enable interrupt driven SPI
+	  support. Non-interrupt-driven, poll-waiting is recommended if the
+	  interrupt rate would be to high in the interrupt driven case.
+	CONFIG_KINETIS_SPI_DMA - Use DMA to improve SPI transfer performance.
+	  Cannot be used with CONFIG_KINETIS_SPI_INTERRUPT.
+
+	CONFIG_SDIO_DMA - Support DMA data transfers.  Requires CONFIG_KINETIS_SDIO
+	  and CONFIG_KINETIS_DMA2.
+	CONFIG_SDIO_PRI - Select SDIO interrupt prority.  Default: 128
+	CONFIG_SDIO_DMAPRIO - Select SDIO DMA interrupt priority. 
+	  Default:  Medium
+	CONFIG_SDIO_WIDTH_D1_ONLY - Select 1-bit transfer mode.  Default:
+	  4-bit transfer mode.
+
+  KwikStik-K40 LCD Hardware Configuration
+
+    CONFIG_LCD_LANDSCAPE - Define for 320x240 display "landscape"
+      support. Default is this 320x240 "landscape" orientation
+      (this setting is informative only... not used).
+    CONFIG_LCD_PORTRAIT - Define for 240x320 display "portrait"
+      orientation support.  In this orientation, the KwikStik-K40's
+      LCD ribbon cable is at the bottom of the display. Default is
+      320x240 "landscape" orientation.
+    CONFIG_LCD_RPORTRAIT - Define for 240x320 display "reverse
+      portrait" orientation support.  In this orientation, the
+      KwikStik-K40's LCD ribbon cable is at the top of the display.
+      Default is 320x240 "landscape" orientation.
+    CONFIG_LCD_BACKLIGHT - Define to support an adjustable backlight
+      using timer 1.  The granularity of the settings is determined
+      by CONFIG_LCD_MAXPOWER.  Requires CONFIG_KINETIS_TIM1.
+
+Configurations
+==============
+
+Each KwikStik-K40 configuration is maintained in a sudirectory and
+can be selected as follow:
+
+	cd tools
+	./configure.sh kwikstik-k40/<subdir>
+	cd -
+	. ./setenv.sh
+
+Where <subdir> is one of the following:
+
+  ostest:
+  ------
+    This configuration directory, performs a simple OS test using
+    examples/ostest.  By default, this project assumes that you are
+    using the DFU bootloader.
+
+    CONFIG_KINETIS_BUILDROOT=y	  : NuttX buildroot under Linux or Cygwin
diff --git a/nuttx/configs/kwikstik-k40/include/board.h b/nuttx/configs/kwikstik-k40/include/board.h
new file mode 100755
index 0000000000..26eed6661f
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/include/board.h
@@ -0,0 +1,135 @@
+/************************************************************************************
+ * configs/kwikstik-k40/include/board.h
+ * include/arch/board/board.h
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_BOARD_BOARD_H
+#define __ARCH_BOARD_BOARD_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#ifndef __ASSEMBLY__
+# include <stdint.h>
+#endif
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Clocking *************************************************************************/
+
+/* LED definitions ******************************************************************/
+
+#define LED_STARTED       0
+#define LED_HEAPALLOCATE  1
+#define LED_IRQSENABLED   2
+#define LED_STACKCREATED  3
+#define LED_INIRQ         4
+#define LED_SIGNAL        5
+#define LED_ASSERTION     6
+#define LED_PANIC         7
+
+/* Button definitions ***************************************************************/
+
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+/************************************************************************************
+ * Name: k40_boardinitialize
+ *
+ * Description:
+ *   All STM32 architectures must provide the following entry point.  This entry point
+ *   is called early in the intitialization -- after all memory has been configured
+ *   and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+EXTERN void k40_boardinitialize(void);
+
+/************************************************************************************
+ * Button support.
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After
+ *   that, up_buttons() may be called to collect the current state of all
+ *   buttons or up_irqbutton() may be called to register button interrupt
+ *   handlers.
+ *
+ *   After up_buttoninit() has been called, up_buttons() may be called to
+ *   collect the state of all buttons.  up_buttons() returns an 8-bit bit set
+ *   with each bit associated with a button.  See the BUTTON_*_BIT and JOYSTICK_*_BIT
+ *   definitions in board.h for the meaning of each bit.
+ *
+ *   up_irqbutton() may be called to register an interrupt handler that will
+ *   be called when a button is depressed or released.  The ID value is a
+ *   button enumeration value that uniquely identifies a button resource. See the
+ *   BUTTON_* and JOYSTICK_* definitions in board.h for the meaning of enumeration
+ *   value.  The previous interrupt handler address is returned (so that it may
+ *   restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_BUTTONS
+EXTERN void up_buttoninit(void);
+EXTERN uint8_t up_buttons(void);
+#ifdef CONFIG_ARCH_IRQBUTTONS
+EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
+#endif
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif  /* __ARCH_BOARD_BOARD_H */
diff --git a/nuttx/configs/kwikstik-k40/ostest/Make.defs b/nuttx/configs/kwikstik-k40/ostest/Make.defs
new file mode 100644
index 0000000000..c7e5f1f81e
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/ostest/Make.defs
@@ -0,0 +1,162 @@
+############################################################################
+# configs/kwikstik-k40/ostest/Make.defs
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+
+# Setup for the selected toolchain
+
+ifeq ($(CONFIG_KINETIS_CODESOURCERYW),y)
+  # CodeSourcery under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_KINETIS_CODESOURCERYL),y)
+  # CodeSourcery under Linux
+  CROSSDEV = arm-none-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+  MAXOPTIMIZATION = -O2
+endif
+ifeq ($(CONFIG_KINETIS_DEVKITARM),y)
+  # devkitARM under Windows
+  CROSSDEV = arm-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_KINETIS_BUILDROOT),y)
+  # NuttX buildroot under Linux or Cygwin
+  CROSSDEV = arm-elf-
+  ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+  MAXOPTIMIZATION = -Os
+endif
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/winlink.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/ld.script}"
+  MAXOPTIMIZATION = -O2
+else
+  # Linux/Cygwin-native toolchain 
+  MKDEP = $(TOPDIR)/tools/mkdeps.sh
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/ld.script
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+  ARCHOPTIMIZATION = -g
+else
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+define PREPROCESS
+	@echo "CPP: $1->$2"
+	@$(CPP) $(CPPFLAGS) $1 -o $2
+endef
+
+define COMPILE
+	@echo "CC: $1"
+	@$(CC) -c $(CFLAGS) $1 -o $2
+endef
+
+define COMPILEXX
+	@echo "CXX: $1"
+	@$(CXX) -c $(CXXFLAGS) $1 -o $2
+endef
+
+define ASSEMBLE
+	@echo "AS: $1"
+	@$(CC) -c $(AFLAGS) $1 -o $2
+endef
+
+define ARCHIVE
+	echo "AR: $2"; \
+	$(AR) $1 $2 || { echo "$(AR) $1 $2 FAILED!" ; exit 1 ; }
+endef
+
+define CLEAN
+	@rm -f *.o *.a
+endef
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+
diff --git a/nuttx/configs/kwikstik-k40/ostest/appconfig b/nuttx/configs/kwikstik-k40/ostest/appconfig
new file mode 100644
index 0000000000..05f1034b61
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/ostest/appconfig
@@ -0,0 +1,39 @@
+############################################################################
+# configs/kwikstik-k40/ostest/appconfig
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+# Path to example in apps/examples containing the user_start entry point
+
+CONFIGURED_APPS += examples/ostest
+
diff --git a/nuttx/configs/kwikstik-k40/ostest/defconfig b/nuttx/configs/kwikstik-k40/ostest/defconfig
new file mode 100755
index 0000000000..cdf2d13e7d
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/ostest/defconfig
@@ -0,0 +1,849 @@
+############################################################################
+# configs/kwikstik-k40/ostest/defconfig
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+#
+# architecture selection
+#
+# CONFIG_ARCH - identifies the arch subdirectory and, hence, the
+#   processor architecture.
+# CONFIG_ARCH_family - for use in C code.  This identifies the
+#   particular chip family that the architecture is implemented
+#   in.
+# CONFIG_ARCH_architecture - for use in C code.  This identifies the
+#   specific architecture within the chip familyl.
+# CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+# CONFIG_ARCH_CHIP_name - For use in C code
+# CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence,
+#   the board that supports the particular chip or SoC.
+# CONFIG_ARCH_BOARD_name - for use in C code
+# CONFIG_ENDIAN_BIG - define if big endian (default is little endian)
+# CONFIG_BOARD_LOOPSPERMSEC - for delay loops
+# CONFIG_DRAM_SIZE - Describes the installed DRAM.
+# CONFIG_DRAM_START - The start address of DRAM (physical)
+# CONFIG_DRAM_END - Last address+1 of installed RAM
+# CONFIG_ARCH_IRQPRIO - The K40X256VLQ100 supports interrupt prioritization
+# CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
+#   stack. If defined, this symbol is the size of the interrupt
+#   stack in bytes.  If not defined, the user task stacks will be
+#   used during interrupt handling.
+# CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
+# CONFIG_ARCH_BOOTLOADER - Set if you are using a bootloader.
+# CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.
+# CONFIG_ARCH_BUTTONS -  Enable support for buttons. Unique to board architecture.
+# CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
+#   cause a 100 second delay during boot-up.  This 100 second delay
+#   serves no purpose other than it allows you to calibrate
+#   CONFIG_BOARD_LOOPSPERMSEC.  You simply use a stop watch to measure
+#   the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until
+#   the delay actually is 100 seconds.
+# CONFIG_ARCH_DMA - Support DMA initialization
+#
+CONFIG_ARCH=arm
+CONFIG_ARCH_ARM=y
+CONFIG_ARCH_CORTEXM4=y
+CONFIG_ARCH_CHIP=kinetis
+CONFIG_ARCH_CHIP_K40X256VLQ100=y
+CONFIG_ARCH_BOARD=kwikstik-k40
+CONFIG_ARCH_BOARD_KWIKSTIK_K40=y
+CONFIG_BOARD_LOOPSPERMSEC=5483
+CONFIG_DRAM_SIZE=0x00010000
+CONFIG_DRAM_START=0x20000000
+CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+CONFIG_ARCH_IRQPRIO=y
+CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_BOOTLOADER=n
+CONFIG_ARCH_LEDS=y
+CONFIG_ARCH_BUTTONS=n
+CONFIG_ARCH_CALIBRATION=n
+CONFIG_ARCH_DMA=n
+
+#
+# Identify toolchain and linker options
+#
+CONFIG_KINETIS_CODESOURCERYW=n
+CONFIG_KINETIS_CODESOURCERYL=n
+CONFIG_KINETIS_DEVKITARM=n
+CONFIG_KINETIS_BUILDROOT=y
+CONFIG_KINETIS_DFU=y
+
+#
+#  Individual subsystems can be enabled:
+#
+# Individual subsystems can be enabled:
+# AHB: 
+CONFIG_KINETIS_DMA1=n
+CONFIG_KINETIS_DMA2=n
+CONFIG_KINETIS_CRC=n
+CONFIG_KINETIS_FSMC=y
+CONFIG_KINETIS_SDIO=n
+# APB1:
+CONFIG_KINETIS_TIM2=n
+CONFIG_KINETIS_TIM3=n
+CONFIG_KINETIS_TIM4=n
+CONFIG_KINETIS_TIM5=n
+CONFIG_KINETIS_TIM6=n
+CONFIG_KINETIS_TIM7=n
+CONFIG_KINETIS_WWDG=n
+CONFIG_KINETIS_SPI2=n
+CONFIG_KINETIS_SPI4=n
+CONFIG_KINETIS_USART2=y
+CONFIG_KINETIS_USART3=n
+CONFIG_KINETIS_UART4=n
+CONFIG_KINETIS_UART5=n
+CONFIG_KINETIS_I2C1=n
+CONFIG_KINETIS_I2C2=n
+CONFIG_KINETIS_USB=y
+CONFIG_KINETIS_CAN=n
+CONFIG_KINETIS_BKP=n
+CONFIG_KINETIS_PWR=n
+CONFIG_KINETIS_DAC=n
+# APB2:
+CONFIG_KINETIS_ADC1=n
+CONFIG_KINETIS_ADC2=n
+CONFIG_KINETIS_TIM1=n
+CONFIG_KINETIS_SPI1=n
+CONFIG_KINETIS_TIM8=n
+CONFIG_KINETIS_USART1=y
+CONFIG_KINETIS_ADC3=n
+
+#
+# K40X256VLQ100 specific serial device driver settings
+#
+# CONFIG_USARTn_SERIAL_CONSOLE - selects the USARTn for the
+#   console and ttys0 (default is the USART1).
+# CONFIG_USARTn_RXBUFSIZE - Characters are buffered as received.
+#   This specific the size of the receive buffer
+# CONFIG_USARTn_TXBUFSIZE - Characters are buffered before
+#   being sent.  This specific the size of the transmit buffer
+# CONFIG_USARTn_BAUD - The configure BAUD of the UART.  Must be
+# CONFIG_USARTn_BITS - The number of bits.  Must be either 7 or 8.
+# CONFIG_USARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+# CONFIG_USARTn_2STOP - Two stop bits
+#
+CONFIG_USART1_SERIAL_CONSOLE=y
+CONFIG_USART2_SERIAL_CONSOLE=n
+CONFIG_USART3_SERIAL_CONSOLE=n
+CONFIG_USART4_SERIAL_CONSOLE=n
+CONFIG_USART5_SERIAL_CONSOLE=n
+
+CONFIG_USART1_TXBUFSIZE=256
+CONFIG_USART2_TXBUFSIZE=256
+CONFIG_USART3_TXBUFSIZE=256
+CONFIG_USART4_TXBUFSIZE=256
+CONFIG_USART5_TXBUFSIZE=256
+
+CONFIG_USART1_RXBUFSIZE=256
+CONFIG_USART2_RXBUFSIZE=256
+CONFIG_USART3_RXBUFSIZE=256
+CONFIG_USART4_RXBUFSIZE=256
+CONFIG_USART5_RXBUFSIZE=256
+
+CONFIG_USART1_BAUD=115200
+CONFIG_USART2_BAUD=115200
+CONFIG_USART3_BAUD=115200
+CONFIG_USART4_BAUD=115200
+CONFIG_USART5_BAUD=115200
+
+CONFIG_USART1_BITS=8
+CONFIG_USART2_BITS=8
+CONFIG_USART3_BITS=8
+CONFIG_USART4_BITS=8
+CONFIG_USART5_BITS=8
+
+CONFIG_USART1_PARITY=0
+CONFIG_USART2_PARITY=0
+CONFIG_USART3_PARITY=0
+CONFIG_USART4_PARITY=0
+CONFIG_USART5_PARITY=0
+
+CONFIG_USART1_2STOP=0
+CONFIG_USART2_2STOP=0
+CONFIG_USART3_2STOP=0
+CONFIG_USART4_2STOP=0
+CONFIG_USART5_2STOP=0
+
+#
+# K40X256VLQ100 specific SSI device driver settings
+#
+# CONFIG_SSIn_DISABLE - select to disable all support for
+#   the SSI
+# CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support
+#   Poll-waiting is recommended if the interrupt rate would be to
+#   high in the interrupt driven case.
+# CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+#   emptying the Rx FIFO.  If the SPI frequency is high and this
+#   value is large, then larger values of this setting may cause
+#   Rx FIFO overrun errors.  Default: half of the Tx FIFO size (4).
+#
+CONFIG_SSI0_DISABLE=n
+CONFIG_SSI1_DISABLE=y
+CONFIG_SSI_POLLWAIT=y
+#CONFIG_SSI_TXLIMIT=4
+
+#
+# General build options
+#
+# CONFIG_RRLOAD_BINARY - make the rrload binary format used with
+#   BSPs from www.ridgerun.com using the tools/mkimage.sh script
+# CONFIG_INTELHEX_BINARY - make the Intel HEX binary format
+#   used with many different loaders using the GNU objcopy program
+#   Should not be selected if you are not using the GNU toolchain.
+# CONFIG_MOTOROLA_SREC - make the Motorola S-Record binary format
+#   used with many different loaders using the GNU objcopy program
+#   Should not be selected if you are not using the GNU toolchain.
+# CONFIG_RAW_BINARY - make a raw binary format file used with many
+#   different loaders using the GNU objcopy program.  This option
+#   should not be selected if you are not using the GNU toolchain.
+# CONFIG_HAVE_LIBM - toolchain supports libm.a
+#
+CONFIG_RRLOAD_BINARY=n
+CONFIG_INTELHEX_BINARY=y
+CONFIG_MOTOROLA_SREC=n
+CONFIG_RAW_BINARY=n
+CONFIG_HAVE_LIBM=n
+
+#
+# General OS setup
+#
+# CONFIG_APPS_DIR - Identifies the relative path to the directory
+#   that builds the application to link with NuttX.  Default: ../apps
+# CONFIG_DEBUG - enables built-in debug options
+# CONFIG_DEBUG_VERBOSE - enables verbose debug output
+# CONFIG_DEBUG_SYMBOLS - build without optimization and with
+#   debug symbols (needed for use with a debugger).
+# CONFIG_MM_REGIONS - If the architecture includes multiple
+#   regions of memory to allocate from, this specifies the
+#   number of memory regions that the memory manager must
+#   handle and enables the API mm_addregion(start, end);
+# CONFIG_ARCH_LOWPUTC - architecture supports low-level, boot
+#   time console output
+# CONFIG_MSEC_PER_TICK - The default system timer is 100Hz
+#   or MSEC_PER_TICK=10.  This setting may be defined to
+#   inform NuttX that the processor hardware is providing
+#   system timer interrupts at some interrupt interval other
+#   than 10 msec.
+# CONFIG_RR_INTERVAL - The round robin timeslice will be set
+#   this number of milliseconds;  Round robin scheduling can
+#   be disabled by setting this value to zero.
+# CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in 
+#   scheduler to monitor system performance
+# CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a
+#   task name to save in the TCB.  Useful if scheduler
+#   instrumentation is selected.  Set to zero to disable.
+# CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY -
+#   Used to initialize the internal time logic.
+# CONFIG_GREGORIAN_TIME - Enables Gregorian time conversions.
+#   You would only need this if you are concerned about accurate
+#   time conversions in the past or in the distant future.
+# CONFIG_JULIAN_TIME - Enables Julian time conversions. You
+#   would only need this if you are concerned about accurate
+#   time conversion in the distand past.  You must also define
+#   CONFIG_GREGORIAN_TIME in order to use Julian time.
+# CONFIG_DEV_CONSOLE - Set if architecture-specific logic
+#   provides /dev/console.  Enables stdout, stderr, stdin.
+# CONFIG_DEV_LOWCONSOLE - Use the simple, low-level serial console
+#   driver (minimul support)
+# CONFIG_MUTEX_TYPES: Set to enable support for recursive and
+#   errorcheck mutexes. Enables pthread_mutexattr_settype().
+# CONFIG_PRIORITY_INHERITANCE : Set to enable support for priority
+#   inheritance on mutexes and semaphores. 
+# CONFIG_SEM_PREALLOCHOLDERS: This setting is only used if priority
+#   inheritance is enabled.  It defines the maximum number of
+#   different threads (minus one) that can take counts on a
+#   semaphore with priority inheritance support.  This may be 
+#   set to zero if priority inheritance is disabled OR if you
+#   are only using semaphores as mutexes (only one holder) OR
+#   if no more than two threads participate using a counting
+#   semaphore.
+# CONFIG_SEM_NNESTPRIO.  If priority inheritance is enabled,
+#   then this setting is the maximum number of higher priority
+#   threads (minus 1) than can be waiting for another thread
+#   to release a count on a semaphore.  This value may be set
+#   to zero if no more than one thread is expected to wait for
+#   a semaphore.
+# CONFIG_FDCLONE_DISABLE. Disable cloning of all file descriptors
+#   by task_create() when a new task is started.  If set, all
+#   files/drivers will appear to be closed in the new task.
+# CONFIG_FDCLONE_STDIO. Disable cloning of all but the first
+#   three file descriptors (stdin, stdout, stderr) by task_create()
+#   when a new task is started. If set, all files/drivers will
+#   appear to be closed in the new task except for stdin, stdout,
+#   and stderr.
+# CONFIG_SDCLONE_DISABLE. Disable cloning of all socket
+#   desciptors by task_create() when a new task is started. If
+#   set, all sockets will appear to be closed in the new task.
+# CONFIG_NXFLAT. Enable support for the NXFLAT binary format.
+#  This format will support execution of NuttX binaries located
+#  in a ROMFS filesystem (see examples/nxflat).
+# CONFIG_SCHED_WORKQUEUE.  Create a dedicated "worker" thread to
+#  handle delayed processing from interrupt handlers.  This feature
+#  is required for some drivers but, if there are not complaints,
+#  can be safely disabled.  The worker thread also performs
+#  garbage collection -- completing any delayed memory deallocations
+#  from interrupt handlers.  If the worker thread is disabled,
+#  then that clean will be performed by the IDLE thread instead
+#  (which runs at the lowest of priority and may not be appropriate
+#  if memory reclamation is of high priority).  If CONFIG_SCHED_WORKQUEUE
+#  is enabled, then the following options can also be used:
+# CONFIG_SCHED_WORKPRIORITY - The execution priority of the worker
+#  thread.  Default: 50
+# CONFIG_SCHED_WORKPERIOD - How often the worker thread checks for
+#  work in units of microseconds.  Default: 50*1000 (50 MS).
+# CONFIG_SCHED_WORKSTACKSIZE - The stack size allocated for the worker
+#  thread.  Default: CONFIG_IDLETHREAD_STACKSIZE.
+# CONFIG_SIG_SIGWORK - The signal number that will be used to wake-up
+#  the worker thread.  Default: 4
+#
+#CONFIG_APPS_DIR=
+CONFIG_DEBUG=n
+CONFIG_DEBUG_VERBOSE=n
+CONFIG_DEBUG_SYMBOLS=n
+CONFIG_MM_REGIONS=1
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_INSTRUMENTATION=n
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_START_YEAR=2009
+CONFIG_START_MONTH=9
+CONFIG_START_DAY=21
+CONFIG_GREGORIAN_TIME=n
+CONFIG_JULIAN_TIME=n
+CONFIG_DEV_CONSOLE=y
+CONFIG_DEV_LOWCONSOLE=y
+CONFIG_MUTEX_TYPES=n
+CONFIG_PRIORITY_INHERITANCE=n
+CONFIG_SEM_PREALLOCHOLDERS=0
+CONFIG_SEM_NNESTPRIO=0
+CONFIG_FDCLONE_DISABLE=n
+CONFIG_FDCLONE_STDIO=n
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_NXFLAT=n
+CONFIG_SCHED_WORKQUEUE=n
+CONFIG_SCHED_WORKPRIORITY=50
+CONFIG_SCHED_WORKPERIOD=(50*1000)
+CONFIG_SCHED_WORKSTACKSIZE=1024
+CONFIG_SIG_SIGWORK=4
+
+#
+# The following can be used to disable categories of
+# APIs supported by the OS.  If the compiler supports
+# weak functions, then it should not be necessary to
+# disable functions unless you want to restrict usage
+# of those APIs.
+#
+# There are certain dependency relationships in these
+# features.
+#
+# o mq_notify logic depends on signals to awaken tasks
+#   waiting for queues to become full or empty.
+# o pthread_condtimedwait() depends on signals to wake
+#   up waiting tasks.
+#
+CONFIG_DISABLE_CLOCK=n
+CONFIG_DISABLE_POSIX_TIMERS=n
+CONFIG_DISABLE_PTHREAD=n
+CONFIG_DISABLE_SIGNALS=n
+CONFIG_DISABLE_MQUEUE=n
+CONFIG_DISABLE_MOUNTPOINT=y
+CONFIG_DISABLE_ENVIRON=y
+CONFIG_DISABLE_POLL=y
+
+#
+# Misc libc settings
+#
+# CONFIG_NOPRINTF_FIELDWIDTH - sprintf-related logic is a
+#   little smaller if we do not support fieldwidthes
+#
+CONFIG_NOPRINTF_FIELDWIDTH=n
+
+#
+# Allow for architecture optimized implementations
+#
+# The architecture can provide optimized versions of the
+# following to improve system performance
+#
+CONFIG_ARCH_MEMCPY=n
+CONFIG_ARCH_MEMCMP=n
+CONFIG_ARCH_MEMMOVE=n
+CONFIG_ARCH_MEMSET=n
+CONFIG_ARCH_STRCMP=n
+CONFIG_ARCH_STRCPY=n
+CONFIG_ARCH_STRNCPY=n
+CONFIG_ARCH_STRLEN=n
+CONFIG_ARCH_STRNLEN=n
+CONFIG_ARCH_BZERO=n
+
+#
+# Sizes of configurable things (0 disables)
+#
+# CONFIG_MAX_TASKS - The maximum number of simultaneously
+#   active tasks.  This value must be a power of two.
+# CONFIG_MAX_TASK_ARGS - This controls the maximum number of
+#   of parameters that a task may receive (i.e., maxmum value
+#   of 'argc')
+# CONFIG_NPTHREAD_KEYS - The number of items of thread-
+#   specific data that can be retained
+# CONFIG_NFILE_DESCRIPTORS - The maximum number of file
+#   descriptors (one for each open)
+# CONFIG_NFILE_STREAMS - The maximum number of streams that
+#   can be fopen'ed
+# CONFIG_NAME_MAX - The maximum size of a file name.
+# CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate
+#   on fopen. (Only if CONFIG_NFILE_STREAMS > 0)
+# CONFIG_NUNGET_CHARS - Number of characters that can be
+#   buffered by ungetc() (Only if CONFIG_NFILE_STREAMS > 0)
+# CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message
+#   structures.  The system manages a pool of preallocated
+#   message structures to minimize dynamic allocations
+# CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with
+#   a fixed payload size given by this settin (does not include
+#   other message structure overhead.
+# CONFIG_MAX_WDOGPARMS - Maximum number of parameters that
+#   can be passed to a watchdog handler
+# CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog
+#   structures.  The system manages a pool of preallocated
+#   watchdog structures to minimize dynamic allocations
+# CONFIG_PREALLOC_TIMERS - The number of pre-allocated POSIX
+#   timer structures.  The system manages a pool of preallocated
+#   timer structures to minimize dynamic allocations.  Set to
+#   zero for all dynamic allocations.
+#
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASK_ARGS=4
+CONFIG_NPTHREAD_KEYS=4
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NAME_MAX=32
+CONFIG_STDIO_BUFFER_SIZE=256
+CONFIG_NUNGET_CHARS=2
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_MQ_MAXMSGSIZE=32
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_PREALLOC_TIMERS=4
+
+#
+# Filesystem configuration
+#
+# CONFIG_FS_FAT - Enable FAT filesystem support
+# CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FAT_LCNAMES - Enable use of the NT-style upper/lower case 8.3
+#   file name support.
+# CONFIG_FAT_LFN - Enable FAT long file names.  NOTE:  Microsoft claims
+#   patents on FAT long file name technology.  Please read the
+#   disclaimer in the top-level COPYING file and only enable this
+#   feature if you understand these issues.
+# CONFIG_FAT_MAXFNAME - If CONFIG_FAT_LFN is defined, then the
+#   default, maximum long file name is 255 bytes.  This can eat up
+#   a lot of memory (especially stack space).  If you are willing
+#   to live with some non-standard, short long file names, then
+#   define this value.  A good choice would be the same value as
+#   selected for CONFIG_NAME_MAX which will limit the visibility
+#   of longer file names anyway.
+# CONFIG_FS_NXFFS: Enable NuttX FLASH file system (NXFF) support.
+# CONFIG_NXFFS_ERASEDSTATE: The erased state of FLASH. 
+#   This must have one of the values of 0xff or 0x00.
+#   Default: 0xff.
+# CONFIG_NXFFS_PACKTHRESHOLD: When packing flash file data,
+#   don't both with file chunks smaller than this number of data bytes.
+# CONFIG_NXFFS_MAXNAMLEN: The maximum size of an NXFFS file name.
+#   Default: 255.
+# CONFIG_NXFFS_PACKTHRESHOLD: When packing flash file data,
+#   don't both with file chunks smaller than this number of data bytes.
+#   Default: 32.
+# CONFIG_NXFFS_TAILTHRESHOLD: clean-up can either mean
+#   packing files together toward the end of the file or, if file are
+#   deleted at the end of the file, clean up can simply mean erasing
+#   the end of FLASH memory so that it can be re-used again.  However,
+#   doing this can also harm the life of the FLASH part because it can
+#   mean that the tail end of the FLASH is re-used too often. This
+#   threshold determines if/when it is worth erased the tail end of FLASH
+#   and making it available for re-use (and possible over-wear).
+#   Default: 8192.
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
+# CONFIG_FS_RAMMAP - For file systems that do not support XIP, this
+#   option will enable a limited form of memory mapping that is
+#   implemented by copying whole files into memory.
+#
+CONFIG_FS_FAT=n
+CONFIG_FAT_LCNAMES=n
+CONFIG_FAT_LFN=n
+CONFIG_FAT_MAXFNAME=32
+CONFIG_FS_NXFFS=n
+CONFIG_FS_ROMFS=n
+
+#
+# SPI-based MMC/SD driver
+#
+# CONFIG_MMCSD_NSLOTS
+#   Number of MMC/SD slots supported by the driver
+# CONFIG_MMCSD_READONLY
+#   Provide read-only access (default is read/write)
+# CONFIG_MMCSD_SPICLOCK - Maximum SPI clock to drive MMC/SD card.
+#   Default is 20MHz.
+#
+CONFIG_MMCSD_NSLOTS=1
+CONFIG_MMCSD_READONLY=n
+CONFIG_MMCSD_SPICLOCK=12500000
+
+#
+# Block driver buffering
+#
+# CONFIG_FS_READAHEAD
+#   Enable read-ahead buffering
+# CONFIG_FS_WRITEBUFFER
+#   Enable write buffering
+#
+CONFIG_FS_READAHEAD=n
+CONFIG_FS_WRITEBUFFER=n
+
+#
+# SDIO-based MMC/SD driver
+#
+# CONFIG_SDIO_DMA
+#   SDIO driver supports DMA
+# CONFIG_MMCSD_MMCSUPPORT
+#   Enable support for MMC cards
+# CONFIG_MMCSD_HAVECARDDETECT
+#   SDIO driver card detection is 100% accurate
+#
+CONFIG_SDIO_DMA=n
+CONFIG_MMCSD_MMCSUPPORT=n
+CONFIG_MMCSD_HAVECARDDETECT=n
+
+#
+# TCP/IP and UDP support via uIP
+# CONFIG_NET - Enable or disable all network features
+# CONFIG_NET_IPv6 - Build in support for IPv6
+# CONFIG_NSOCKET_DESCRIPTORS - Maximum number of socket descriptors per task/thread.
+# CONFIG_NET_SOCKOPTS - Enable or disable support for socket options
+# CONFIG_NET_BUFSIZE - uIP buffer size
+# CONFIG_NET_TCP - TCP support on or off
+# CONFIG_NET_TCP_CONNS - Maximum number of TCP connections (all tasks)
+# CONFIG_NET_TCP_READAHEAD_BUFSIZE - Size of TCP read-ahead buffers
+# CONFIG_NET_NTCP_READAHEAD_BUFFERS - Number of TCP read-ahead buffers (may be zero)
+# CONFIG_NET_TCPBACKLOG - Incoming connections pend in a backlog until
+#   accept() is called. The size of the backlog is selected when listen() is called.
+# CONFIG_NET_MAX_LISTENPORTS - Maximum number of listening TCP ports (all tasks)
+# CONFIG_NET_UDP - UDP support on or off
+# CONFIG_NET_UDP_CHECKSUMS - UDP checksums on or off
+# CONFIG_NET_UDP_CONNS - The maximum amount of concurrent UDP connections
+# CONFIG_NET_ICMP - ICMP ping response support on or off
+# CONFIG_NET_ICMP_PING - ICMP ping request support on or off
+# CONFIG_NET_PINGADDRCONF - Use "ping" packet for setting IP address
+# CONFIG_NET_STATISTICS - uIP statistics on or off
+# CONFIG_NET_RECEIVE_WINDOW - The size of the advertised receiver's window
+# CONFIG_NET_ARPTAB_SIZE - The size of the ARP table
+# CONFIG_NET_BROADCAST - Broadcast support
+# CONFIG_NET_FWCACHE_SIZE - number of packets to remember when looking for duplicates
+#
+CONFIG_NET=n
+CONFIG_NET_IPv6=n
+CONFIG_NSOCKET_DESCRIPTORS=0
+CONFIG_NET_SOCKOPTS=y
+CONFIG_NET_BUFSIZE=420
+CONFIG_NET_TCP=n
+CONFIG_NET_TCP_CONNS=40
+CONFIG_NET_MAX_LISTENPORTS=40
+CONFIG_NET_UDP=n
+CONFIG_NET_UDP_CHECKSUMS=y
+#CONFIG_NET_UDP_CONNS=10
+CONFIG_NET_ICMP=n
+CONFIG_NET_ICMP_PING=n
+#CONFIG_NET_PINGADDRCONF=0
+CONFIG_NET_STATISTICS=y
+#CONFIG_NET_RECEIVE_WINDOW=
+#CONFIG_NET_ARPTAB_SIZE=8
+CONFIG_NET_BROADCAST=n
+#CONFIG_NET_FWCACHE_SIZE=2
+
+#
+# UIP Network Utilities
+# CONFIG_NET_DHCP_LIGHT - Reduces size of DHCP
+# CONFIG_NET_RESOLV_ENTRIES - Number of resolver entries
+#
+CONFIG_NET_DHCP_LIGHT=n
+CONFIG_NET_RESOLV_ENTRIES=4
+
+#
+# USB Device Configuration
+#
+# CONFIG_USBDEV
+#   Enables USB device support
+# CONFIG_USBDEV_ISOCHRONOUS
+#   Build in extra support for isochronous endpoints
+# CONFIG_USBDEV_DUALSPEED
+#   Hardware handles high and full speed operation (USB 2.0)
+# CONFIG_USBDEV_SELFPOWERED
+#   Will cause USB features to indicate that the device is
+#   self-powered
+# CONFIG_USBDEV_MAXPOWER
+#   Maximum power consumption in mA
+# CONFIG_USBDEV_TRACE
+#   Enables USB tracing for debug
+# CONFIG_USBDEV_TRACE_NRECORDS
+#   Number of trace entries to remember
+#
+CONFIG_USBDEV=n
+CONFIG_USBDEV_ISOCHRONOUS=n
+CONFIG_USBDEV_DUALSPEED=n
+CONFIG_USBDEV_SELFPOWERED=y
+CONFIG_USBDEV_REMOTEWAKEUP=n
+CONFIG_USBDEV_MAXPOWER=100
+CONFIG_USBDEV_TRACE=n
+CONFIG_USBDEV_TRACE_NRECORDS=128
+
+#
+# USB Serial Device Configuration
+#
+# CONFIG_USBSER
+#   Enable compilation of the USB serial driver
+# CONFIG_USBSER_EPINTIN
+#   The logical 7-bit address of a hardware endpoint that supports
+#   interrupt IN operation
+# CONFIG_USBSER_EPBULKOUT
+#   The logical 7-bit address of a hardware endpoint that supports
+#   bulk OUT operation
+# CONFIG_USBSER_EPBULKIN
+#   The logical 7-bit address of a hardware endpoint that supports
+#   bulk IN operation
+# # CONFIG_USBSER_NWRREQS and CONFIG_USBSER_NRDREQS
+#   The number of write/read requests that can be in flight
+# CONFIG_USBSER_VENDORID and CONFIG_USBSER_VENDORSTR
+#   The vendor ID code/string
+# CONFIG_USBSER_PRODUCTID and CONFIG_USBSER_PRODUCTSTR
+#   The product ID code/string
+# CONFIG_USBSER_RXBUFSIZE and CONFIG_USBSER_TXBUFSIZE
+#   Size of the serial receive/transmit buffers
+#
+CONFIG_USBSER=n
+CONFIG_USBSER_EPINTIN=1
+CONFIG_USBSER_EPBULKOUT=2
+CONFIG_USBSER_EPBULKIN=3
+CONFIG_USBSER_NWRREQS=4
+CONFIG_USBSER_NRDREQS=4
+CONFIG_USBSER_VENDORID=0x067b
+CONFIG_USBSER_PRODUCTID=0x2303
+CONFIG_USBSER_VENDORSTR="Nuttx"
+CONFIG_USBSER_PRODUCTSTR="USBdev Serial"
+CONFIG_USBSER_RXBUFSIZE=512
+CONFIG_USBSER_TXBUFSIZE=512
+
+#
+# USB Storage Device Configuration
+#
+# CONFIG_USBSTRG
+#   Enable compilation of the USB storage driver
+# CONFIG_USBSTRG_EP0MAXPACKET
+#   Max packet size for endpoint 0
+# CONFIG_USBSTRG_EPBULKOUT and CONFIG_USBSTRG_EPBULKIN
+#   The logical 7-bit address of a hardware endpoints that support
+#   bulk OUT and IN operations
+# CONFIG_USBSTRG_NWRREQS and CONFIG_USBSTRG_NRDREQS
+#   The number of write/read requests that can be in flight
+# CONFIG_USBSTRG_BULKINREQLEN and CONFIG_USBSTRG_BULKOUTREQLEN
+#   The size of the buffer in each write/read request.  This
+#   value needs to be at least as large as the endpoint
+#   maxpacket and ideally as large as a block device sector.
+# CONFIG_USBSTRG_VENDORID and CONFIG_USBSTRG_VENDORSTR
+#   The vendor ID code/string
+# CONFIG_USBSTRG_PRODUCTID and CONFIG_USBSTRG_PRODUCTSTR
+#   The product ID code/string
+# CONFIG_USBSTRG_REMOVABLE
+#   Select if the media is removable
+#
+CONFIG_USBSTRG=n
+CONFIG_USBSTRG_EP0MAXPACKET=64
+CONFIG_USBSTRG_EPBULKOUT=2
+CONFIG_USBSTRG_EPBULKIN=5
+CONFIG_USBSTRG_NRDREQS=2
+CONFIG_USBSTRG_NWRREQS=2
+CONFIG_USBSTRG_BULKINREQLEN=256
+CONFIG_USBSTRG_BULKOUTREQLEN=256
+CONFIG_USBSTRG_VENDORID=0x584e
+CONFIG_USBSTRG_VENDORSTR="NuttX"
+CONFIG_USBSTRG_PRODUCTID=0x5342
+CONFIG_USBSTRG_PRODUCTSTR="USBdev Storage"
+CONFIG_USBSTRG_VERSIONNO=0x0399
+CONFIG_USBSTRG_REMOVABLE=y
+
+#
+# Settings for examples/uip
+#
+CONFIG_EXAMPLE_UIP_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_EXAMPLE_UIP_DRIPADDR=(10<<24|0<<16|0<<8|1)
+CONFIG_EXAMPLE_UIP_NETMASK=(255<<24|255<<16|255<<8|0)
+CONFIG_EXAMPLE_UIP_DHCPC=n
+
+#
+# Settings for examples/nettest
+CONFIG_EXAMPLE_NETTEST_SERVER=n
+CONFIG_EXAMPLE_NETTEST_PERFORMANCE=n
+CONFIG_EXAMPLE_NETTEST_NOMAC=n
+CONFIG_EXAMPLE_NETTEST_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_EXAMPLE_NETTEST_DRIPADDR=(10<<24|0<<16|0<<8|1)
+CONFIG_EXAMPLE_NETTEST_NETMASK=(255<<24|255<<16|255<<8|0)
+CONFIG_EXAMPLE_NETTEST_CLIENTIP=(10<<24|0<<16|0<<8|1)
+
+#
+# Settings for examples/ostest
+#
+CONFIG_EXAMPLES_OSTEST_LOOPS=1
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=2048
+CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
+
+#
+# Settings for apps/nshlib
+#
+# CONFIG_NSH_FILEIOSIZE - Size of a static I/O buffer
+# CONFIG_NSH_STRERROR - Use strerror(errno)
+# CONFIG_NSH_LINELEN - Maximum length of one command line
+# CONFIG_NSH_STACKSIZE - Stack size to use for new threads.
+# CONFIG_NSH_NESTDEPTH - Max number of nested if-then[-else]-fi
+# CONFIG_NSH_DISABLESCRIPT - Disable scripting support
+# CONFIG_NSH_DISABLEBG - Disable background commands
+# CONFIG_NSH_ROMFSETC - Use startup script in /etc
+# CONFIG_NSH_CONSOLE - Use serial console front end
+# CONFIG_NSH_TELNET - Use telnetd console front end
+# CONFIG_NSH_ARCHINIT - Platform provides architecture
+#   specific initialization (nsh_archinitialize()).
+#
+# If CONFIG_NSH_TELNET is selected:
+# CONFIG_NSH_IOBUFFER_SIZE -- Telnetd I/O buffer size
+# CONFIG_NSH_DHCPC - Obtain address using DHCP
+# CONFIG_NSH_IPADDR - Provides static IP address
+# CONFIG_NSH_DRIPADDR - Provides static router IP address
+# CONFIG_NSH_NETMASK - Provides static network mask
+# CONFIG_NSH_NOMAC - Use a bogus MAC address
+#
+# If CONFIG_NSH_ROMFSETC is selected:
+# CONFIG_NSH_ROMFSMOUNTPT - ROMFS mountpoint
+# CONFIG_NSH_INITSCRIPT - Relative path to init script
+# CONFIG_NSH_ROMFSDEVNO - ROMFS RAM device minor
+# CONFIG_NSH_ROMFSSECTSIZE - ROMF sector size
+# CONFIG_NSH_FATDEVNO - FAT FS RAM device minor
+# CONFIG_NSH_FATSECTSIZE - FAT FS sector size
+# CONFIG_NSH_FATNSECTORS - FAT FS number of sectors
+# CONFIG_NSH_FATMOUNTPT - FAT FS mountpoint
+#
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_STRERROR=n
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_STACKSIZE=2048
+CONFIG_NSH_NESTDEPTH=3
+CONFIG_NSH_DISABLESCRIPT=n
+CONFIG_NSH_DISABLEBG=n
+CONFIG_NSH_ROMFSETC=n
+CONFIG_NSH_CONSOLE=y
+CONFIG_NSH_TELNET=n
+CONFIG_NSH_ARCHINIT=n
+CONFIG_NSH_IOBUFFER_SIZE=512
+CONFIG_NSH_DHCPC=n
+CONFIG_NSH_NOMAC=n
+CONFIG_NSH_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_NSH_DRIPADDR=(10<<24|0<<16|0<<8|1)
+CONFIG_NSH_NETMASK=(255<<24|255<<16|255<<8|0)
+CONFIG_NSH_ROMFSMOUNTPT="/etc"
+CONFIG_NSH_INITSCRIPT="init.d/rcS"
+CONFIG_NSH_ROMFSDEVNO=0
+CONFIG_NSH_ROMFSSECTSIZE=64
+CONFIG_NSH_FATDEVNO=1
+CONFIG_NSH_FATSECTSIZE=512
+CONFIG_NSH_FATNSECTORS=1024
+CONFIG_NSH_FATMOUNTPT=/tmp
+
+#
+# Architecture-specific NSH options
+#
+CONFIG_NSH_MMCSDSPIPORTNO=0
+CONFIG_NSH_MMCSDSLOTNO=0
+CONFIG_NSH_MMCSDMINOR=0
+
+#
+# Settings for examples/usbserial
+#
+# CONFIG_EXAMPLES_USBSERIAL_INONLY
+#    Only verify IN (device-to-host) data transfers.  Default: both
+# CONFIG_EXAMPLES_USBSERIAL_OUTONLY
+#    Only verify OUT (host-to-device) data transfers.  Default: both
+# CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL
+#    Send only small, single packet messages.  Default: Send large and small.
+# CONFIG_EXAMPLES_USBSERIAL_ONLYBIG
+#    Send only large, multi-packet messages.  Default: Send large and small.
+#
+CONFIG_EXAMPLES_USBSERIAL_INONLY=n
+CONFIG_EXAMPLES_USBSERIAL_OUTONLY=n
+CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL=n
+CONFIG_EXAMPLES_USBSERIAL_ONLYBIG=n
+
+CONFIG_EXAMPLES_USBSERIAL_TRACEINIT=n
+CONFIG_EXAMPLES_USBSERIAL_TRACECLASS=n
+CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS=n
+CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER=n
+CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS=n
+
+#
+# Stack and heap information
+#
+# CONFIG_BOOT_RUNFROMFLASH - Some configurations support XIP
+#   operation from FLASH but must copy initialized .data sections to RAM.
+#   (should also be =n for the KwikStik-K40 which always runs from flash)
+# CONFIG_BOOT_COPYTORAM -  Some configurations boot in FLASH
+#   but copy themselves entirely into RAM for better performance.
+# CONFIG_CUSTOM_STACK - The up_ implementation will handle
+#   all stack operations outside of the nuttx model.
+# CONFIG_STACK_POINTER - The initial stack pointer (arm7tdmi only)
+# CONFIG_IDLETHREAD_STACKSIZE - The size of the initial stack.
+#  This is the thread that (1) performs the inital boot of the system up
+#  to the point where user_start() is spawned, and (2) there after is the
+#  IDLE thread that executes only when there is no other thread ready to
+#  run.
+# CONFIG_USERMAIN_STACKSIZE - The size of the stack to allocate
+#  for the main user thread that begins at the user_start() entry point.
+# CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
+# CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
+# CONFIG_HEAP_BASE - The beginning of the heap
+# CONFIG_HEAP_SIZE - The size of the heap
+#
+CONFIG_BOOT_RUNFROMFLASH=n
+CONFIG_BOOT_COPYTORAM=n
+CONFIG_CUSTOM_STACK=n
+CONFIG_STACK_POINTER=
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=2048
+CONFIG_HEAP_BASE=
+CONFIG_HEAP_SIZE=
diff --git a/nuttx/configs/kwikstik-k40/ostest/ld.script b/nuttx/configs/kwikstik-k40/ostest/ld.script
new file mode 100755
index 0000000000..b91f149968
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/ostest/ld.script
@@ -0,0 +1,110 @@
+/****************************************************************************
+ * configs/kwikstik-k40/ostest/ld.script
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* The K40X256VLQ100 has 256Kb of FLASH beginning at address 0x0800:0000 and
+ * 256Kb of FlexMemory beginning at address 0x2000:0000.  When booting from FLASH,
+ * FLASH memory is aliased to address 0x0000:0000 where the code expects to
+ * begin execution by jumping to the entry point in the 0x0800:0000 address
+ * range.
+ */
+
+MEMORY
+{
+    flash (rx) : ORIGIN = 0x08000000, LENGTH = 256K
+    sram (rwx) : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+OUTPUT_ARCH(arm)
+ENTRY(_stext)
+SECTIONS
+{
+	.text : {
+		_stext = ABSOLUTE(.);
+		*(.vectors)
+		*(.text .text.*)        
+		*(.fixup)
+		*(.gnu.warning)
+		*(.rodata .rodata.*)        
+		*(.gnu.linkonce.t.*)
+		*(.glue_7)
+		*(.glue_7t)
+		*(.got)
+		*(.gcc_except_table)
+		*(.gnu.linkonce.r.*)
+		_etext = ABSOLUTE(.);
+	} > flash
+
+	_eronly = ABSOLUTE(.);
+
+	.data : {
+		_sdata = ABSOLUTE(.);
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		CONSTRUCTORS
+		_edata = ABSOLUTE(.);
+	} > sram AT > flash
+
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} >sram
+
+	__exidx_start = ABSOLUTE(.);
+	.ARM.exidx : {
+		*(.ARM.exidx*)
+	} >sram
+	__exidx_end = ABSOLUTE(.);
+
+	.bss : {
+		_sbss = ABSOLUTE(.);
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		_ebss = ABSOLUTE(.);
+	} > sram
+
+	/* Stabs debugging sections. */
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_info 0 : { *(.debug_info) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+	.debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/nuttx/configs/kwikstik-k40/ostest/setenv.sh b/nuttx/configs/kwikstik-k40/ostest/setenv.sh
new file mode 100755
index 0000000000..e7f74bc48e
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/ostest/setenv.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+# configs/kwikstik-k40/ostest/setenv.sh
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+if [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+  export PATH_ORIG="${PATH}"
+fi
+
+# This the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+
+# This the Cygwin path to the location where I build the buildroot
+# toolchain.
+export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${BUILDROOT_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/kwikstik-k40/src/Makefile b/nuttx/configs/kwikstik-k40/src/Makefile
new file mode 100755
index 0000000000..9378539d1d
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/Makefile
@@ -0,0 +1,93 @@
+############################################################################
+# configs/kwikstik-k40/src/Makefile
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+CFLAGS		+= -I$(TOPDIR)/sched
+
+ASRCS		= 
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
+
+CSRCS		= up_boot.c up_lcd.c up_leds.c up_buttons.c up_spi.c up_usbdev.c
+
+ifeq ($(CONFIG_NSH_ARCHINIT),y)
+CSRCS		+= up_nsh.c
+endif
+
+ifeq ($(CONFIG_USBSTRG),y)
+CSRCS		+= up_usbstrg.c
+endif
+
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+SRCS		= $(ASRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ifeq ($(WINTOOL),y)
+  CFLAGS	+= -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/cortexm3}"
+else
+  CFLAGS	+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/cortexm3
+endif
+
+all: libboard$(LIBEXT)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+libboard$(LIBEXT): $(OBJS)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
+	done ; )
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	@rm -f libboard$(LIBEXT) *~ .*.swp
+	$(call CLEAN)
+
+distclean: clean
+	@rm -f Make.dep .depend
+
+-include Make.dep
diff --git a/nuttx/configs/kwikstik-k40/src/kwistik-internal.h b/nuttx/configs/kwikstik-k40/src/kwistik-internal.h
new file mode 100755
index 0000000000..46b63b9d0a
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/kwistik-internal.h
@@ -0,0 +1,110 @@
+/************************************************************************************
+ * configs/kwikstik-k40/src/kwikstik_internal.h
+ * arch/arm/src/board/kwikstik_internal.n
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __CONFIGS_KWIKSTK_K40_SRC_KWIKSTIK_INTERNAL_H
+#define __CONFIGS_KWIKSTK_K40_SRC_KWIKSTIK_INTERNAL_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+#include <stdint.h>
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* How many SPI modules does this chip support? The LM3S6918 supports 2 SPI
+ * modules (others may support more -- in such case, the following must be
+ * expanded).
+ */
+
+#if KINETIS_NSPI < 1
+#  undef CONFIG_KINETIS_SPI1
+#  undef CONFIG_KINETIS_SPI2
+#elif KINETIS_NSPI < 2
+#  undef CONFIG_KINETIS_SPI2
+#endif
+
+/* KwikStik-K40 GPIOs ***************************************************************/
+
+/* LEDs */
+
+/* BUTTONS -- NOTE that some have EXTI interrupts configured */
+
+/* SPI FLASH chip select */
+
+/* USB Soft Connect Pullup */
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kinetis_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the KwikStik-K40 board.
+ *
+ ************************************************************************************/
+
+extern void weak_function kinetis_spiinitialize(void);
+
+/************************************************************************************
+ * Name: kinetis_usbinitialize
+ *
+ * Description:
+ *   Called to setup USB-related GPIO pins for the KwikStik-K40 board.
+ *
+ ************************************************************************************/
+
+extern void weak_function kinetis_usbinitialize(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_KWIKSTK_K40_SRC_KWIKSTIK_INTERNAL_H */
+
diff --git a/nuttx/configs/kwikstik-k40/src/up_boot.c b/nuttx/configs/kwikstik-k40/src/up_boot.c
new file mode 100755
index 0000000000..350294d2c4
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_boot.c
@@ -0,0 +1,102 @@
+/************************************************************************************
+ * configs/kwikstik-k40/src/up_boot.c
+ * arch/arm/src/board/up_boot.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "kwikstik-internal.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kinetis_boardinitialize
+ *
+ * Description:
+ *   All Kinetis architectures must provide the following entry point.  This entry
+ *   point is called early in the initialization -- after all memory has been
+ *   configured and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+void kinetis_boardinitialize(void)
+{
+  /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak function
+   * kinetis_spiinitialize() has been brought into the link.
+   */
+
+#if defined(CONFIG_KINETIS_SPI1) || defined(CONFIG_KINETIS_SPI2)
+  if (kinetis_spiinitialize)
+    {
+      kinetis_spiinitialize();
+    }
+#endif
+
+   /* Initialize USB is 1) USBDEV is selected, 2) the USB controller is not
+    * disabled, and 3) the weak function kinetis_usbinitialize() has been brought
+    * into the build.
+    */
+
+#if defined(CONFIG_USBDEV) && defined(CONFIG_KINETIS_USB)
+  if (kinetis_usbinitialize)
+    {
+      kinetis_usbinitialize();
+    }
+#endif
+
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  up_ledinit();
+#endif
+}
diff --git a/nuttx/configs/kwikstik-k40/src/up_buttons.c b/nuttx/configs/kwikstik-k40/src/up_buttons.c
new file mode 100644
index 0000000000..8ba02f4a69
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_buttons.c
@@ -0,0 +1,172 @@
+/****************************************************************************
+ * configs/kwikstik-k40/src/up_buttons.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+#include <arch/board/board.h>
+#include "kwikstik-internal.h"
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+/* Pin configuration for each KwikStik-K40 button.  This array is indexed by
+ * the BUTTON_* definitions in board.h
+ */
+
+#if 0
+static const uint16_t g_buttons[NUM_BUTTONS] =
+{
+};
+#endif
+#warning "Missing logic"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_buttoninit
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After
+ *   that, up_buttons() may be called to collect the current state of all
+ *   buttons or up_irqbutton() may be called to register button interrupt
+ *   handlers.
+ *
+ ****************************************************************************/
+
+void up_buttoninit(void)
+{
+#if 0
+  int i;
+
+  /* Configure the GPIO pins as inputs. */
+
+  for (i = 0; i < NUM_BUTTONS; i++)
+    {
+      kinetis_configgpio(g_buttons[i]);
+    }
+#else
+#warning "Missing logic"
+#endif
+}
+
+/****************************************************************************
+ * Name: up_buttons
+ ****************************************************************************/
+
+uint8_t up_buttons(void)
+{
+#if 0
+  uint8_t ret = 0;
+  int i;
+
+  /* Check that state of each key */
+
+  for (i = 0; i < NUM_BUTTONS; i++)
+    {
+       /* A LOW value means that the key is pressed for most keys */
+
+       bool released = kinetis_gpioread(g_buttons[i]);
+
+       /* Accumulate the set of depressed (not released) keys */
+
+       if (!released)
+         {
+            ret |= (1 << i);
+         }
+    }
+
+  return ret;
+#else
+#warning "Missing logic"
+  return 0;
+#endif
+}
+
+/************************************************************************************
+ * Button support.
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After
+ *   that, up_buttons() may be called to collect the current state of all
+ *   buttons or up_irqbutton() may be called to register button interrupt
+ *   handlers.
+ *
+ *   After up_buttoninit() has been called, up_buttons() may be called to
+ *   collect the state of all buttons.  up_buttons() returns an 8-bit bit set
+ *   with each bit associated with a button.  See the BUTTON_*_BIT and JOYSTICK_*_BIT
+ *   definitions in board.h for the meaning of each bit.
+ *
+ *   up_irqbutton() may be called to register an interrupt handler that will
+ *   be called when a button is depressed or released.  The ID value is a
+ *   button enumeration value that uniquely identifies a button resource. See the
+ *   BUTTON_* and JOYSTICK_* definitions in board.h for the meaning of enumeration
+ *   value.  The previous interrupt handler address is returned (so that it may
+ *   restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+xcpt_t up_irqbutton(int id, xcpt_t irqhandler)
+{
+  xcpt_t oldhandler = NULL;
+
+  /* The following should be atomic */
+
+  if (id >= MIN_IRQBUTTON && id <= MAX_IRQBUTTON)
+    {
+      oldhandler = kinetis_gpiosetevent(g_buttons[id], true, true, true, irqhandler);
+    }
+  return oldhandler;
+}
+#endif
+#endif /* CONFIG_ARCH_BUTTONS */
diff --git a/nuttx/configs/kwikstik-k40/src/up_lcd.c b/nuttx/configs/kwikstik-k40/src/up_lcd.c
new file mode 100755
index 0000000000..c2f911fc18
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_lcd.c
@@ -0,0 +1,125 @@
+/**************************************************************************************
+ * configs/kwikstik-k40/src/up_lcd.c
+ * arch/arm/src/board/up_lcd.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ **************************************************************************************/
+ 
+/**************************************************************************************
+ * Included Files
+ **************************************************************************************/
+
+#include <nuttx/config.h>
+#include "kwikstik-internal.h"
+
+/**************************************************************************************
+ * Pre-processor Definitions
+ **************************************************************************************/
+
+/* Configuration **********************************************************************/
+
+/* Display/Color Properties ***********************************************************/
+
+/* Debug ******************************************************************************/
+
+#ifdef CONFIG_DEBUG_LCD
+# define lcddbg(format, arg...)  vdbg(format, ##arg)
+#else
+# define lcddbg(x...)
+#endif
+
+/**************************************************************************************
+ * Private Type Definition
+ **************************************************************************************/
+
+/**************************************************************************************
+ * Private Function Protototypes
+ **************************************************************************************/
+
+/**************************************************************************************
+ * Private Data
+ **************************************************************************************/
+
+/**************************************************************************************
+ * Private Functions
+ **************************************************************************************/
+
+/**************************************************************************************
+ * Public Functions
+ **************************************************************************************/
+
+/**************************************************************************************
+ * Name:  up_lcdinitialize
+ *
+ * Description:
+ *   Initialize the LCD video hardware.  The initial state of the LCD is fully
+ *   initialized, display memory cleared, and the LCD ready to use, but with the power
+ *   setting at 0 (full off).
+ *
+ **************************************************************************************/
+
+int up_lcdinitialize(void)
+{
+  gvdbg("Initializing\n");
+#warning "Missing logic"
+  return OK;
+}
+
+/**************************************************************************************
+ * Name:  up_lcdgetdev
+ *
+ * Description:
+ *   Return a a reference to the LCD object for the specified LCD.  This allows support
+ *   for multiple LCD devices.
+ *
+ **************************************************************************************/
+
+FAR struct lcd_dev_s *up_lcdgetdev(int lcddev)
+{
+  DEBUGASSERT(lcddev == 0);
+#warning "Missing logic"
+  return NULL;
+}
+
+/**************************************************************************************
+ * Name:  up_lcduninitialize
+ *
+ * Description:
+ *   Unitialize the LCD support
+ *
+ **************************************************************************************/
+
+void up_lcduninitialize(void)
+{
+#warning "Missing logic"
+}
+
diff --git a/nuttx/configs/kwikstik-k40/src/up_leds.c b/nuttx/configs/kwikstik-k40/src/up_leds.c
new file mode 100755
index 0000000000..0ad485ec64
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_leds.c
@@ -0,0 +1,113 @@
+/****************************************************************************
+ * configs/kwikstik-k40/src/up_leds.c
+ * arch/arm/src/board/up_leds.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "up_internal.h"
+#include "kinetis_internal.h"
+#include "kwistik-internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG with
+ * CONFIG_DEBUG_VERBOSE too)
+ */
+
+#undef LED_DEBUG  /* Define to enable debug */
+
+#ifdef LED_DEBUG
+#  define leddbg  lldbg
+#  define ledvdbg llvdbg
+#else
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_ledinit
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void up_ledinit(void)
+{
+# warning "Missing logic"
+}
+
+/****************************************************************************
+ * Name: up_ledon
+ ****************************************************************************/
+
+void up_ledon(int led)
+{
+# warning "Missing logic"
+}
+
+/****************************************************************************
+ * Name: up_ledoff
+ ****************************************************************************/
+
+void up_ledoff(int led)
+{
+# warning "Missing logic"
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/nuttx/configs/kwikstik-k40/src/up_nsh.c b/nuttx/configs/kwikstik-k40/src/up_nsh.c
new file mode 100755
index 0000000000..eb16f71bf1
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_nsh.c
@@ -0,0 +1,139 @@
+/****************************************************************************
+ * config/kwikstik-k40/src/up_nsh.c
+ * arch/arm/src/board/up_nsh.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#ifdef CONFIG_KINETIS_SPI1
+#  include <nuttx/spi.h>
+#  include <nuttx/mtd.h>
+#endif
+
+#ifdef CONFIG_KINETIS_SDIO
+#  include <nuttx/sdio.h>
+#  include <nuttx/mmcsd.h>
+#endif
+
+#include "kinetis_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+/* For now, don't build in any SPI1 support -- NSH is not using it */
+
+#undef CONFIG_KINETIS_SPI1
+
+/* PORT and SLOT number probably depend on the board configuration */
+
+#ifdef CONFIG_ARCH_BOARD_KWIKSTIK_K40
+#  define CONFIG_NSH_HAVEUSBDEV 1
+#  define CONFIG_NSH_HAVEMMCSD  1
+#  if defined(CONFIG_NSH_MMCSDSLOTNO) && CONFIG_NSH_MMCSDSLOTNO != 0
+#    error "Only one MMC/SD slot"
+#    undef CONFIG_NSH_MMCSDSLOTNO
+#  endif
+#  ifndef CONFIG_NSH_MMCSDSLOTNO
+#    define CONFIG_NSH_MMCSDSLOTNO 0
+#  endif
+#else
+   /* Add configuration for new Kinetis boards here */
+#  error "Unrecognized Kinetis board"
+#  undef CONFIG_NSH_HAVEUSBDEV
+#  undef CONFIG_NSH_HAVEMMCSD
+#endif
+
+/* Can't support USB features if USB is not enabled */
+
+#ifndef CONFIG_USBDEV
+#  undef CONFIG_NSH_HAVEUSBDEV
+#endif
+
+/* Can't support MMC/SD features if mountpoints are disabled or if SDIO support
+ * is not enabled.
+ */
+
+#if defined(CONFIG_DISABLE_MOUNTPOINT) || !defined(CONFIG_KINETIS_SDIO)
+#  undef CONFIG_NSH_HAVEMMCSD
+#endif
+
+#ifndef CONFIG_NSH_MMCSDMINOR
+#  define CONFIG_NSH_MMCSDMINOR 0
+#endif
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(...) lib_lowprintf(__VA_ARGS__)
+#  else
+#    define message(...) printf(__VA_ARGS__)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message lib_lowprintf
+#  else
+#    define message printf
+#  endif
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+# warning "Missing logic"
+  return OK;
+}
diff --git a/nuttx/configs/kwikstik-k40/src/up_spi.c b/nuttx/configs/kwikstik-k40/src/up_spi.c
new file mode 100755
index 0000000000..d5d8865ce7
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_spi.c
@@ -0,0 +1,164 @@
+/************************************************************************************
+ * configs/kwikstik-k40/src/up_spi.c
+ * arch/arm/src/board/up_spi.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "kinetis_internal.h"
+#include "kwikstick-internal.h"
+
+#if defined(CONFIG_KINETIS_SPI1) || defined(CONFIG_KINETIS_SPI2)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#ifdef CONFIG_DEBUG_SPI
+#  define spidbg  lldbg
+#  ifdef CONFIG_DEBUG_SPI_VERBOSE
+#    define spivdbg lldbg
+#  else
+#    define spivdbg(x...)
+#  endif
+#else
+#  undef CONFIG_DEBUG_SPI_VERBOSE
+#  define spidbg(x...)
+#  define spivdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kinetis_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the KwikStik-K40 board.
+ *
+ ************************************************************************************/
+
+void weak_function kinetis_spiinitialize(void)
+{
+# warning "Missing logic"
+}
+
+/****************************************************************************
+ * Name:  kinetis_spi1/2/3select and kinetis_spi1/2/3status
+ *
+ * Description:
+ *   The external functions, kinetis_spi1/2/3select and kinetis_spi1/2/3status must be
+ *   provided by board-specific logic.  They are implementations of the select
+ *   and status methods of the SPI interface defined by struct spi_ops_s (see
+ *   include/nuttx/spi.h). All other methods (including up_spiinitialize())
+ *   are provided by common Kinetis logic.  To use this common SPI logic on your
+ *   board:
+ *
+ *   1. Provide logic in kinetis_boardinitialize() to configure SPI chip select
+ *      pins.
+ *   2. Provide kinetis_spi1/2/3select() and kinetis_spi1/2/3status() functions in your
+ *      board-specific logic.  These functions will perform chip selection and
+ *      status operations using GPIOs in the way your board is configured.
+ *   3. Add a calls to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   4. The handle returned by up_spiinitialize() may then be used to bind the
+ *      SPI driver to higher level logic (e.g., calling
+ *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ *      the SPI MMC/SD driver).
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_KINETIS_SPI1
+void kinetis_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+# warning "Missing logic"
+}
+
+uint8_t kinetis_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+# warning "Missing logic"
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_KINETIS_SPI2
+void kinetis_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+# warning "Missing logic"
+}
+
+uint8_t kinetis_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+# warning "Missing logic"
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_KINETIS_SPI3
+void kinetis_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+# warning "Missing logic"
+}
+
+uint8_t kinetis_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+# warning "Missing logic"
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#endif /* CONFIG_KINETIS_SPI1 || CONFIG_KINETIS_SPI2 */
diff --git a/nuttx/configs/kwikstik-k40/src/up_usbdev.c b/nuttx/configs/kwikstik-k40/src/up_usbdev.c
new file mode 100644
index 0000000000..60e54af7cf
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_usbdev.c
@@ -0,0 +1,115 @@
+/************************************************************************************
+ * configs/kwikstik-k40/src/up_usbdev.c
+ * arch/arm/src/board/up_boot.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+#include <nuttx/usb/usbdev_trace.h>
+
+#include "up_arch.h"
+#include "kinetis_internal.h"
+#include "kwikstik-internal.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kinetis_usbinitialize
+ *
+ * Description:
+ *   Called to setup USB-related GPIO pins for the KwikStik-K40 board.
+ *
+ ************************************************************************************/
+
+void kinetis_usbinitialize(void)
+{
+# warning "Missing logic"
+}
+
+/************************************************************************************
+ * Name:  kinetis_usbpullup
+ *
+ * Description:
+ *   If USB is supported and the board supports a pullup via GPIO (for USB software
+ *   connect and disconnect), then the board software must provide kinetis_pullup.
+ *   See include/nuttx/usb/usbdev.h for additional description of this method.
+ *   Alternatively, if no pull-up GPIO the following EXTERN can be redefined to be
+ *   NULL.
+ *
+ ************************************************************************************/
+
+int kinetis_usbpullup(FAR struct usbdev_s *dev, bool enable)
+{
+  usbtrace(TRACE_DEVPULLUP, (uint16_t)enable);
+# warning "Missing logic"
+  return OK;
+}
+
+/************************************************************************************
+ * Name:  kinetis_usbsuspend
+ *
+ * Description:
+ *   Board logic must provide the kinetis_usbsuspend logic if the USBDEV driver is
+ *   used.  This function is called whenever the USB enters or leaves suspend mode.
+ *   This is an opportunity for the board logic to shutdown clocks, power, etc.
+ *   while the USB is suspended.
+ *
+ ************************************************************************************/
+
+void kinetis_usbsuspend(FAR struct usbdev_s *dev, bool resume)
+{
+  ulldbg("resume: %d\n", resume);
+#warning "Missing logic"
+}
+
diff --git a/nuttx/configs/kwikstik-k40/src/up_usbstrg.c b/nuttx/configs/kwikstik-k40/src/up_usbstrg.c
new file mode 100755
index 0000000000..d5dcebf7a2
--- /dev/null
+++ b/nuttx/configs/kwikstik-k40/src/up_usbstrg.c
@@ -0,0 +1,118 @@
+/****************************************************************************
+ * configs/kwikstik-k40/src/up_usbstrg.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Configure and register the Kinetis MMC/SD block driver.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/sdio.h>
+#include <nuttx/mmcsd.h>
+
+#include "kinetis_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_EXAMPLES_USBSTRG_DEVMINOR1
+#  define CONFIG_EXAMPLES_USBSTRG_DEVMINOR1 0
+#endif
+
+/* SLOT number(s) could depend on the board configuration */
+
+#ifdef CONFIG_ARCH_BOARD_KWIKSTIK_K40
+#  undef KINETIS_MMCSDSLOTNO
+#  define KINETIS_MMCSDSLOTNO 0
+#else
+   /* Add configuration for new Kinetis boards here */
+#  error "Unrecognized Kinetis board"
+#endif
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(...) lib_lowprintf(__VA_ARGS__)
+#    define msgflush()
+#  else
+#    define message(...) printf(__VA_ARGS__)
+#    define msgflush() fflush(stdout)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message lib_lowprintf
+#    define msgflush()
+#  else
+#    define message printf
+#    define msgflush() fflush(stdout)
+#  endif
+#endif
+
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: usbstrg_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int usbstrg_archinitialize(void)
+{
+  /* If examples/usbstrg is built as an NSH command, then SD slot should
+   * already have been initized in nsh_archinitialize() (see up_nsh.c).  In
+   * this case, there is nothing further to be done here.
+   */
+
+#ifndef CONFIG_EXAMPLES_USBSTRG_BUILTIN
+#  warning "Missing logic"
+#endif /* CONFIG_EXAMPLES_USBSTRG_BUILTIN */
+
+   return OK;
+}