Configuration for Sparkfun UBW32 board

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4660 42af7a65-404d-4744-a932-0658087f49c3

22 files changed, 3516 insertions, 12 deletions

diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 31b84665a..f5e9b4a54 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -2688,4 +2688,5 @@
 	  device is unregistered.
 	* include/sys/prctl.h, sched/prctl.c, include/pthread.h:  Add interfaces to
 	  support getting and setting of the thread or task name.
+	* configs/ubw32:  Add a configuration to support the Sparkfun UBW32 PIC32 board.
 
diff --git a/nuttx/Documentation/NuttX.html b/nuttx/Documentation/NuttX.html
index fa2acdbc8..4bc1f5e51 100644
--- a/nuttx/Documentation/NuttX.html
+++ b/nuttx/Documentation/NuttX.html
@@ -2176,18 +2176,28 @@
 <tr>
   <td><br></td>
   <td>
-    <p>
-      <b>PIC32MX460F512L</b>.
+   <p><b>PIC32MX460F512L</b>.  There one two board ports using this chip:</p>
+   <ul>
+    <li><b>PIC32MX Board from PCB Logic Design Co</b>.
       This port is for the PIC32MX board from PCB Logic Design Co. and used the PIC32MX460F512L.
       The board is a very simple -- little more than a carrier for the PIC32 MCU plus voltage regulation, debug interface, and an OTG connector.
+    </li>
+    <p>
+      <b>STATUS:</b>
+      The basic port is code complete and fully verified in NuttX 6.13.
+      Available configurations include the OS test and the NuttShell (NSH - see the <a href="http://www.nuttx.org/NuttShell.html">NSH User Guide</a>).
     </p>
-    <ul>
-      <p>
-       <b>STATUS:</b>
-       The basic port is code complete and fully verified in NuttX 6.13.
-       Available configurations include the OS test and the NuttShell (NSH - see the <a href="http://www.nuttx.org/NuttShell.html">NSH User Guide</a>).
-      </p>
-    </ul>
+    <li><b>UBW32 Board from Sparkfun</b>
+      This is the port to the Sparkfun UBW32 board.
+      This port uses the <a href="http://www.sparkfun.com/products/8971">original v2.4</a> board which is based on the MicroChip PIC32MX460F512L.
+      This older version has been replaced with this <a href="http://www.sparkfun.com/products/9713">newer board</a>.
+      See also the <a href="http://www.schmalzhaus.com/UBW32/">UBW32</a> web site.
+    </li>
+    <p>
+      <b>STATUS:</b>
+      This is a work in progress.
+    </p>
+  </ul>
   </td>
 </tr>
 <tr>
diff --git a/nuttx/configs/Kconfig b/nuttx/configs/Kconfig
index d46437f2e..61d633edb 100644
--- a/nuttx/configs/Kconfig
+++ b/nuttx/configs/Kconfig
@@ -372,6 +372,16 @@ config ARCH_BOARD_TWR_K60N512
 		Kinetis K60 Cortex-M4 MCU.  This port uses the FreeScale TWR-K60N512
 		development board.
 
+config ARCH_BOARD_UBW32
+	bool "UBW32 v2.4 board from Sparkfun"
+	depends on ARCH_CHIP_PIC32MX460F512L
+	---help---
+		This is the port to the Sparkfun UBW32 board.  This port uses the original v2.4
+		board which is based on the MicroChip PIC32MX460F512L.  See
+		http://www.sparkfun.com/products/8971.  This older version has been replaced
+		with this board http://www.sparkfun.com/products/9713. See also
+		http://www.schmalzhaus.com/UBW32/.
+
 config ARCH_BOARD_US7032EVB1
 	bool "Hitachi SH-1/US7032EVB1 board"
 	depends on ARCH_CHIP_SH7032
@@ -491,6 +501,7 @@ config ARCH_BOARD
 	default "sure-pic32mx"       if ARCH_BOARD_SUREPIC32MX
 	default "teensy"             if ARCH_BOARD_TEENSY
 	default "twr-k60n512"        if ARCH_BOARD_TWR_K60N512
+	default "ubw32"              if ARCH_BOARD_UBW32
 	default "us7032evb1"         if ARCH_BOARD_US7032EVB1
 	default "vsn"                if ARCH_BOARD_VSN
 	default "xtrs"               if ARCH_BOARD_XTRS
diff --git a/nuttx/configs/README.txt b/nuttx/configs/README.txt
index 7da857ec0..570eb7524 100644
--- a/nuttx/configs/README.txt
+++ b/nuttx/configs/README.txt
@@ -1566,6 +1566,14 @@ configs/twr-k60n512
   Kinetis K60 Cortex-M4 MCU.  This port uses the FreeScale TWR-K60N512
   development board.
 
+configs/ubw32
+
+  This is the port to the Sparkfun UBW32 board.  This port uses the original v2.4
+  board which is based on the MicroChip PIC32MX460F512L.  See
+  http://www.sparkfun.com/products/8971.  This older version has been replaced
+  with this board http://www.sparkfun.com/products/9713. See also
+  http://www.schmalzhaus.com/UBW32/.
+
 configs/us7032evb1
   This is a port of the Hitachi SH-1 on the Hitachi SH-1/US7032EVB1 board.
   STATUS:  Work has just began on this port.
diff --git a/nuttx/configs/ubw32/Kconfig b/nuttx/configs/ubw32/Kconfig
new file mode 100644
index 000000000..ae2bf3130
--- /dev/null
+++ b/nuttx/configs/ubw32/Kconfig
@@ -0,0 +1,4 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
diff --git a/nuttx/configs/ubw32/README.txt b/nuttx/configs/ubw32/README.txt
new file mode 100644
index 000000000..f1f13d0ac
--- /dev/null
+++ b/nuttx/configs/ubw32/README.txt
@@ -0,0 +1,515 @@
+configs/ubw32 README
+====================
+
+This README file discusses the port of NuttX to the Sparkfun UBW32 board.
+This port uses the original v2.4 board which is based on the MicroChip
+PIC32MX460F512L.  See http://www.sparkfun.com/products/8971.  This older
+version has been replaced with this board http://www.sparkfun.com/products/9713.
+See also http://www.schmalzhaus.com/UBW32/.
+
+Contents
+========
+
+  PIC32MX460F512L Pin Out
+  MAX3232 Connection
+  Toolchains
+  Loading NuttX with PICkit2
+  LEDs
+  PIC32MX Configuration Options
+  Configurations
+
+PIC32MX460F512L Pin Out
+=======================
+
+  PIC32MX460F512L 100-Pin TQFP (USB) Pin Out.  The mapping to the pins on
+  the PCL Logic board are very simple, each pin is brought out to a connector
+  label with the PIC32MX460F512L pin number.
+
+  On board logic only manages power, crystal, and USB signals.
+
+  LEFT SIDE, TOP-TO-BOTTOM (if pin 1 is in upper left)
+  ---- ----------------------------  -------------------------------------------------------
+  PIN  NAME                          Board Connection (omitting pins brought to J3 and J4)
+  ---- ----------------------------  -------------------------------------------------------
+    1  RG15
+    2  Vdd
+    3  PMD5/RE5
+    4  PMD6/RE6                      RE6    User switch
+    5  PMD7/RE7                      RE7    Program switch
+    6  T2CK/RC1
+    7  T3CK/RC2
+    8  T4CK/RC3
+    9  T5CK/SDI1/RC4
+   10  SCK2/PMA5/CN8/RG6
+   11  SDI2/PMA4/CN9/RG7
+   12  SDO2/PMA3/CN10/RG8
+   13  MCLR
+   14  SS2/PMA2/CN11/RG9
+   15  Vss
+   16  Vdd
+   17  TMS/RA0
+   18  INT1/RE8
+   19  INT2/RE9
+   20  AN5/C1IN+/VBUSON/CN7/RB5
+   21  AN4/C1IN-/CN6/RB4
+   22  AN3/C2IN+/CN5/RB3
+   23  AN2/C2IN-/CN4/RB2             RB1    ICSP/Debug/IO (J5) pin 6 (labeled B2)
+   24  PGEC1/AN1/CN3/RB1             RB1    ICSP/Debug/IO (J5) pin 7 (labeled B1)
+   25  PGED1/AN0/CN2/RB0             RB0    ICSP/Debug/IO (J5) pin 8 (labeled B0)
+
+  BOTTOM SIDE, LEFT-TO-RIGHT (if pin 1 is in upper left)
+  ---- ----------------------------  -------------------------------------------------------
+  PIN  NAME                          Board Connection (omitting pins brought to J3 and J4)
+  ---- ----------------------------  -------------------------------------------------------
+   26  PGEC2/AN6/OCFA/RB6            PGC    ICSP/Debug/IO (J5) pin 5 (labled PGC)
+   27  PGED2/AN7/RB7                 PGD    ICSP/Debug/IO (J5) pin 4 (labled PGD)
+   28  VREF-/CVREF-/PMA7/RA9
+   29  VREF+/CVREF+/PMA6/RA10
+   30  AVdd
+   31  AVss
+   32  AN8/C1OUT/RB8
+   33  AN9/C2OUT/RB9
+   34  AN10/CVREFOUT/PMA13/RB10
+   35  AN11/PMA12/RB11
+   36  Vss
+   37  Vdd
+   38  TCK/RA1
+   39  U2RTS/RF13
+   40  U2CTS/RF12
+   41  AN12/PMA11/RB12
+   42  AN13/PMA10/RB13
+   43  AN14/PMALH/PMA1/RB14
+   44  AN15/OCFB/PMALL/PMA0/CN12/RB15
+   45  Vss
+   46  Vdd
+   47  U1CTS/CN20/RD14
+   48  U1RTS/CN21/RD15
+   49  U2RX/PMA9/CN17/RF4
+   50  U2TX/PMA8/CN18/RF5
+
+  RIGHT SIDE, TOP-TO-BOTTOM (if pin 1 is in upper left)
+  ---- ----------------------------  -------------------------------------------------------
+  PIN  NAME                          Board Connection (omitting pins brought to J3 and J4)
+  ---- ----------------------------  -------------------------------------------------------
+   75  Vss
+   74  SOSCO/T1CK/CN0/RC14
+   73  SOSCI/CN1/RC13
+   72  SDO1/OC1/INT0/RD0
+   71  IC4/PMCS1/PMA14/RD11
+   70  SCK1/IC3/PMCS2/PMA15/RD10
+   69  SS1/IC2/RD9
+   68  RTCC/IC1/RD8
+   67  SDA1/INT4/RA15
+   66  SCL1/INT3/RA14
+   65  Vss
+   64  OSC2/CLKO/RC15
+   63  OSC1/CLKI/RC12
+   62  Vdd
+   61  TDO/RA5
+   60  TDI/RA4
+   59  SDA2/RA3
+   58  SCL2/RA2
+   57  D+/RG2                        D+     Alternate USB (J6) pin 3 (labeled D+)
+                                            USB host (JP1) pin
+                                            USB Function (Mini B)
+   56  D-/RG3                        D-     Alternate USB (J6) pin 2 (labeled D-)
+                                            USB host (JP1) pin
+                                            USB Function (Mini B)
+   55  VUSB
+   54  VBUS                          VBUS   Alternate USB (J6) pin 1 (labeled VBUS)
+                                            USB host (JP1) pin
+                                            USB Function (Mini B)
+                                            Jumper JP1 for USB host functionality
+   53  U1TX/RF8
+   52  U1RX/RF2
+   51  USBID/RF3                     USBID  Alternate USB (J6) pin 4 (labeled ID)
+                                            USB Function (Mini B)
+                                            Also USB LED
+
+  TOP SIDE, LEFT-TO-RIGHT (if pin 1 is in upper left)
+  ---- ----------------------------  -------------------------------------------------------
+  PIN  NAME                          Board Connection (omitting pins brought to J3 and J4)
+  ---- ----------------------------  -------------------------------------------------------
+  100  PMD4/RE4
+   99  PMD3/RE3
+   98  PMD2/RE2                      RE2    LED1
+   97  TRD0/RG13
+   96  TRD1/RG12
+   95  TRD2/RG14
+   94  PMD1/RE1                      RE1    LED2
+   93  PMD0/RE0                      RE0    LED3
+   92  TRD3/RA7
+   91  TRCLK/RA6
+   90  PMD8/RG0
+   89  PMD9/RG1
+   88  PMD10/RF1
+   87  PMD11/RF0
+   86  ENVREG
+   85  Vcap/Vddcore
+   84  PMD15/CN16/RD7
+   83  PMD14/CN15/RD6
+   82  PMRD/CN14/RD5
+   81  OC5/PMWR/CN13/RD4
+   80  PMD13/CN19/RD13
+   79  IC5/PMD12/RD12
+   78  OC4/RD3
+   77  OC3/RD2
+   76  OC2/RD1
+
+MAX3232 Connection
+==================
+
+  I use a tiny, MAX3232 board that I got from the eBay made by NKC
+  Electronics (http://www.nkcelectronics.com/).  As of this writing, it
+  is also available here: http://www.nkcelectronics.com/rs232-to-ttl-3v--55v-convert232356.html
+
+  CTS -- Not connected
+  RTS -- Not connected
+  TX  -- J4 pin 31: U1TX/RF8
+  RX  -- J4 pin 30: U1RX/RF2
+  GND -- J4 pin 40: GND
+  Vcc -- J4 pin 39: 5V
+ 
+Toolchains
+==========
+
+  I am using the free, LITE version of the PIC32MX toolchain available
+  for download from the microchip.com web site.  I am using the Windows
+  version.  The MicroChip toolchain is the only toolchaing currently
+  supported in these configurations, but it should be a simple matter to
+  adapt to other toolchains by modifying the Make.defs file include in
+  each configuration.
+
+  Toolchain Options:
+
+  CONFIG_PIC32MX_MICROCHIPW      - MicroChip full toolchain for Windows
+  CONFIG_PIC32MX_MICROCHIPL      - MicroChip full toolchain for Linux
+  CONFIG_PIC32MX_MICROCHIPW_LITE - MicroChip LITE toolchain for Windows
+  CONFIG_PIC32MX_MICROCHIPL_LITE - MicroChip LITE toolchain for Linux
+
+  Windows Native Toolchains
+  
+  NOTE:  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 no 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
+
+Loading NuttX with PICkit2
+==========================
+
+  NOTE:  You need a PICKit3 if you plan to use the MPLAB debugger!  The PICKit2
+  can, however, still be used to load programs.  Instructions for the PICKit3
+  are similar.
+
+  Intel Hex Forma Files:
+  ----------------------
+
+    When NuttX is built it will produce two files in the top-level NuttX
+    directory:
+
+    1) nuttx - This is an ELF file, and
+    2) nuttx.hex - This is an Intel Hex format file.  This is controlled by
+       the setting CONFIG_INTELHEX_BINARY in the .config file.
+
+    The PICkit tool wants an Intel Hex format file to burn into FLASH. However,
+    there is a problem with the generated nutt.hex: The tool expects the nuttx.hex
+    file to contain physical addresses.  But the nuttx.hex file generated from the
+    top-level make will have address in the KSEG0 and KSEG1 regions.
+
+  tools/mkpichex:
+  ---------------
+
+    There is a simple tool in the configs/ubw32/tools directory
+    that can be used to solve both issues with the nuttx.hex file.  But,
+    first, you must build the the tools:
+
+      cd configs/ubw32/tools
+      make
+
+    Now you will have an excecutable file call mkpichex (or mkpichex.exe on
+    Cygwin).  This program will take the nutt.hex file as an input, it will
+    convert all of the KSEG0 and KSEG1 addresses to physical address, and
+    it will write the modified file, replacing the original nuttx.hex.
+
+    To use this file, you need to do the following things:
+
+      . ./setenv.sh    # Source setenv.sh.  Among other this, this script
+                       # will add configs/ubw32/tools to your
+                       # PATH variable
+      make             # Build nuttx and nuttx.hex
+      mkpichex $PWD    # Convert addresses in nuttx.hex.  $PWD is the path
+                       # to the top-level build directory.  It is the only
+                       # required input to mkpichex.
+
+LEDs
+====
+
+  ----- ----- -------------------------------------------------------------
+  LABEL COLOR CONTROL
+  ----- ----- -------------------------------------------------------------
+  USB   Green   RF3. This could be used by software if USB is not used. 
+                     Otherwise, RF3 is used as the USBID signal.
+  LED1  While   RE2, Pulled up.  Low value illuminates
+  LED2  Red     RE1, Pulled up.  Low value illuminates
+  LED3  Yellow  RE0, Pulled up.  Low value illuminates
+  PWR   Blue    Illuminated when 5V is present, not controlled by software
+
+  If CONFIG_ARCH_LEDS is defined, then NuttX will control these LEDs as follows:
+
+                            ON                  OFF
+  ------------------------- ---- ---- ---- ---- ---- ----
+                            LED1 LED2 LED3 LED1 LED2 LED3
+  ------------------------- ---- ---- ---- ---- ---- ----
+  LED_STARTED            0  OFF  OFF  OFF  ---  ---  ---
+  LED_HEAPALLOCATE       1  ON   OFF  N/C  ---  ---  ---
+  LED_IRQSENABLED        2  OFF  ON   N/C  ---  ---  ---
+  LED_STACKCREATED       3  ON   ON   N/C  ---  ---  ---
+  LED_INIRQ              4  N/C  N/C  ON   N/C  N/C  OFF
+  LED_SIGNAL             4  N/C  N/C  ON   N/C  N/C  OFF
+  LED_ASSERTION          4  N/C  N/C  ON   N/C  N/C  OFF
+  LED_PANIC              5  ON   N/C  N/C  OFF  N/C  N/C
+
+PIC32MX Configuration Options
+=============================
+
+  General Architecture Settings:
+
+    CONFIG_ARCH - Identifies the arch/ subdirectory.  This should
+     be set to:
+
+       CONFIG_ARCH=mips
+
+    CONFIG_ARCH_family - For use in C code:
+
+       CONFIG_ARCH_MIPS=y
+
+    CONFIG_ARCH_architecture - For use in C code:
+
+       CONFIG_ARCH_MIPS32=y
+
+    CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+
+       CONFIG_ARCH_CHIP=pic32mx
+
+    CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
+       chip:
+
+       CONFIG_ARCH_CHIP_PIC32MX460F512L=y
+
+    CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
+       hence, the board that supports the particular chip or SoC.
+
+       CONFIG_ARCH_BOARD=ubw32
+
+    CONFIG_ARCH_BOARD_name - For use in C code
+
+       CONFIG_ARCH_BOARD_UBW32=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 (CPU SRAM in this case):
+
+       CONFIG_DRAM_SIZE=(32*1024) (32Kb)
+
+       There is an additional 32Kb of SRAM in AHB SRAM banks 0 and 1.
+
+    CONFIG_DRAM_START - The start address of installed DRAM
+
+       CONFIG_DRAM_START=0x10000000
+
+    CONFIG_DRAM_END - Last address+1 of installed RAM
+
+       CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+
+    CONFIG_ARCH_IRQPRIO - The PIC32MXx 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.
+
+    PIC32MX Configuration
+
+      CONFIG_PIC32MX_MVEC - Select muli- vs. single-vectored interrupts
+
+    Individual subsystems can be enabled:
+
+       CONFIG_PIC32MX_WDT            - Watchdog timer
+       CONFIG_PIC32MX_T2             - Timer 2 (Timer 1 is the system time and always enabled)
+       CONFIG_PIC32MX_T3             - Timer 3
+       CONFIG_PIC32MX_T4             - Timer 4
+       CONFIG_PIC32MX_T5             - Timer 5
+       CONFIG_PIC32MX_IC1            - Input Capture 1
+       CONFIG_PIC32MX_IC2            - Input Capture 2
+       CONFIG_PIC32MX_IC3            - Input Capture 3
+       CONFIG_PIC32MX_IC4            - Input Capture 4
+       CONFIG_PIC32MX_IC5            - Input Capture 5
+       CONFIG_PIC32MX_OC1            - Output Compare 1
+       CONFIG_PIC32MX_OC2            - Output Compare 2
+       CONFIG_PIC32MX_OC3            - Output Compare 3
+       CONFIG_PIC32MX_OC4            - Output Compare 4
+       CONFIG_PIC32MX_OC5            - Output Compare 5
+       CONFIG_PIC32MX_I2C1           - I2C 1
+       CONFIG_PIC32MX_I2C2           - I2C 2
+       CONFIG_PIC32MX_SPI1           - SPI 1
+       CONFIG_PIC32MX_SPI2           - SPI 2
+       CONFIG_PIC32MX_UART1          - UART 1
+       CONFIG_PIC32MX_UART2          - UART 2
+       CONFIG_PIC32MX_ADC            - ADC 1
+       CONFIG_PIC32MX_PMP            - Parallel Master Port
+       CONFIG_PIC32MX_CM1            - Comparator 1
+       CONFIG_PIC32MX_CM2            - Comparator 2
+       CONFIG_PIC32MX_RTCC           - Real-Time Clock and Calendar
+       CONFIG_PIC32MX_DMA            - DMA
+       CONFIG_PIC32MX_FLASH          - FLASH
+       CONFIG_PIC32MX_USBDEV         - USB device
+       CONFIG_PIC32MX_USBHOST        - USB host
+
+    PIC32MX Configuration Settings
+    DEVCFG0:
+      CONFIG_PIC32MX_DEBUGGER - Background Debugger Enable. Default 3 (disabled). The
+        value 2 enables.
+      CONFIG_PIC32MX_ICESEL - In-Circuit Emulator/Debugger Communication Channel Select
+        Default 1 (PG2)
+      CONFIG_PIC32MX_PROGFLASHWP  - Program FLASH write protect.  Default 0xff (disabled)
+      CONFIG_PIC32MX_BOOTFLASHWP - Default 1 (disabled)
+      CONFIG_PIC32MX_CODEWP - Default 1 (disabled)
+    DEVCFG1: (All settings determined by selections in board.h)
+    DEVCFG2: (All settings determined by selections in board.h)
+    DEVCFG3: 
+      CONFIG_PIC32MX_USBIDO - USB USBID Selection.  Default 1 if USB enabled
+        (USBID pin is controlled by the USB module), but 0 (GPIO) otherwise.
+      CONFIG_PIC32MX_VBUSIO - USB VBUSON Selection (Default 1 if USB enabled
+        (VBUSON pin is controlled by the USB module, but 0 (GPIO) otherwise.
+      CONFIG_PIC32MX_WDENABLE - Enabled watchdog on power up.  Default 0 (watchdog
+        can be enabled later by software).
+
+    The priority of interrupts may be specified.  The value ranage of
+    priority is 4-31. The default (16) will be used if these any of these
+    are undefined.
+
+       CONFIG_PIC32MX_CTPRIO         - Core Timer Interrupt
+       CONFIG_PIC32MX_CS0PRIO        - Core Software Interrupt 0
+       CONFIG_PIC32MX_CS1PRIO        - Core Software Interrupt 1
+       CONFIG_PIC32MX_INT0PRIO       - External Interrupt 0
+       CONFIG_PIC32MX_INT1PRIO       - External Interrupt 1
+       CONFIG_PIC32MX_INT2PRIO       - External Interrupt 2
+       CONFIG_PIC32MX_INT3PRIO       - External Interrupt 3
+       CONFIG_PIC32MX_INT4PRIO       - External Interrupt 4
+       CONFIG_PIC32MX_FSCMPRIO       - Fail-Safe Clock Monitor
+       CONFIG_PIC32MX_T1PRIO         - Timer 1 (System timer) priority
+       CONFIG_PIC32MX_T2PRIO         - Timer 2 priority
+       CONFIG_PIC32MX_T3PRIO         - Timer 3 priority
+       CONFIG_PIC32MX_T4PRIO         - Timer 4 priority
+       CONFIG_PIC32MX_T5PRIO         - Timer 5 priority
+       CONFIG_PIC32MX_IC1PRIO        - Input Capture 1
+       CONFIG_PIC32MX_IC2PRIO        - Input Capture 2
+       CONFIG_PIC32MX_IC3PRIO        - Input Capture 3
+       CONFIG_PIC32MX_IC4PRIO        - Input Capture 4
+       CONFIG_PIC32MX_IC5PRIO        - Input Capture 5
+       CONFIG_PIC32MX_OC1PRIO        - Output Compare 1
+       CONFIG_PIC32MX_OC2PRIO        - Output Compare 2
+       CONFIG_PIC32MX_OC3PRIO        - Output Compare 3
+       CONFIG_PIC32MX_OC4PRIO        - Output Compare 4
+       CONFIG_PIC32MX_OC5PRIO        - Output Compare 5
+       CONFIG_PIC32MX_I2C1PRIO       - I2C 1
+       CONFIG_PIC32MX_I2C2PRIO       - I2C 2
+       CONFIG_PIC32MX_SPI1PRIO       - SPI 1
+       CONFIG_PIC32MX_SPI2PRIO       - SPI 2
+       CONFIG_PIC32MX_UART1PRIO      - UART 1
+       CONFIG_PIC32MX_UART2PRIO      - UART 2
+       CONFIG_PIC32MX_CN             - Input Change Interrupt
+       CONFIG_PIC32MX_ADCPRIO        - ADC1 Convert Done
+       CONFIG_PIC32MX_PMPPRIO        - Parallel Master Port
+       CONFIG_PIC32MX_CM1PRIO        - Comparator 1
+       CONFIG_PIC32MX_CM2PRIO        - Comparator 2
+       CONFIG_PIC32MX_FSCMPRIO       - Fail-Safe Clock Monitor
+       CONFIG_PIC32MX_RTCCPRIO       - Real-Time Clock and Calendar
+       CONFIG_PIC32MX_DMA0PRIO       - DMA Channel 0
+       CONFIG_PIC32MX_DMA1PRIO       - DMA Channel 1
+       CONFIG_PIC32MX_DMA2PRIO       - DMA Channel 2
+       CONFIG_PIC32MX_DMA3PRIO       - DMA Channel 3
+       CONFIG_PIC32MX_FCEPRIO        - Flash Control Event
+       CONFIG_PIC32MX_USBPRIO        - USB
+
+  PIC32MXx specific device driver settings
+
+    CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
+       console and ttys0 (default is the UART0).
+    CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
+       This specific the size of the receive buffer
+    CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
+       being sent.  This specific the size of the transmit buffer
+    CONFIG_UARTn_BAUD - The configure BAUD of the UART.  Must be
+    CONFIG_UARTn_BITS - The number of bits.  Must be either 7 or 8.
+    CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+    CONFIG_UARTn_2STOP - Two stop bits
+
+  PIC32MXx USB Device Configuration
+
+  PIC32MXx USB Host Configuration (the PIC32MX does not support USB Host)
+
+Configurations
+==============
+
+Each PIC32MX configuration is maintained in a sudirectory and can be
+selected as follow:
+
+    cd tools
+    ./configure.sh ubw32/<subdir>
+    cd -
+    . ./setenv.sh
+
+Where <subdir> is one of the following:
+
+  ostest:
+    This configuration directory, performs a simple OS test using
+    apps/examples/ostest.
diff --git a/nuttx/configs/ubw32/include/board.h b/nuttx/configs/ubw32/include/board.h
new file mode 100644
index 000000000..b2f1fce3c
--- /dev/null
+++ b/nuttx/configs/ubw32/include/board.h
@@ -0,0 +1,188 @@
+/****************************************************************************
+ * configs/ubw32/include/board.h
+ * include/arch/board/board.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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_UBW32_INCLUDE_BOARD_H
+#define __CONFIGS_UBW32_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+/* Clocking *****************************************************************/
+/* Crystal frequencies */
+
+#define BOARD_POSC_FREQ        8000000  /* Primary OSC XTAL frequency (8MHz) */
+#define BOARD_SOSC_FREQ        32768    /* Secondary OSC XTAL frequency (32.768KHz)
+                                         * (Not present on my board) */
+
+/* PLL configuration and resulting CPU clock.
+ * CPU_CLOCK = ((POSC_FREQ / IDIV) * MULT) / ODIV
+ */
+
+#define BOARD_PLL_IDIV         2        /* PLL input divider */
+#define BOARD_PLL_MULT         20       /* PLL multiplier */
+#define BOARD_PLL_ODIV         1        /* PLL output divider */
+
+#define BOARD_CPU_CLOCK        80000000 /* CPU clock (80MHz = 8MHz * 20 / 2) */
+
+/* USB PLL configuration.
+ * USB_CLOCK = ((POSC_XTAL / IDIV) * 24) / 2
+ */
+
+#define BOARD_UPLL_IDIV        2        /* USB PLL divider (revisit) */
+#define BOARD_USB_CLOCK        48000000 /* USB clock (8MHz / 2) * 24 / 2) */
+
+/* Peripheral clock is divided down from CPU clock.
+ * PBCLOCK = CPU_CLOCK / PBDIV
+ */
+
+#define BOARD_PBDIV            2        /* Peripheral clock divisor (PBDIV) */
+#define BOARD_PBCLOCK          40000000 /* Peripheral clock (PBCLK = 80MHz/2) */
+
+/* Watchdog pre-scaler (re-visit) */
+
+#define BOARD_WD_ENABLE        0        /* Watchdog is disabled */
+#define BOARD_WD_PRESCALER     8        /* Watchdog pre-scaler */
+
+/* LED definitions **********************************************************/
+/* ----- ----- -------------------------------------------------------------
+ * LABEL COLOR CONTROL
+ * ----- ----- -------------------------------------------------------------
+ * USB   Green   RF3. This could be used by software if USB is not used. 
+ *                    Otherwise, RF3 is used as the USBID signal.
+ * LED1  While   RE2, Pulled up.  Low value illuminates
+ * LED2  Red     RE1, Pulled up.  Low value illuminates
+ * LED3  Yellow  RE0, Pulled up.  Low value illuminates
+ * PWR   Blue    Illuminated when 5V is present, not controlled by software
+ */
+
+/* LED index values for use with pic32mx_setled() */
+
+#define PIC32MX_UBW32_LED1     0
+#define PIC32MX_UBW32_LED2     1
+#define PIC32MX_UBW32_LED3     2
+#define PIC32MX_UBW32_NLEDS    3
+
+/* LED bits for use with pic32mx_setleds() */
+
+#define PIC32MX_UBW32_LED1_BIT (1 << PIC32MX_UBW32_LED1)
+#define PIC32MX_UBW32_LED2_BIT (1 << PIC32MX_UBW32_LED2)
+#define PIC32MX_UBW32_LED3_BIT (1 << PIC32MX_UBW32_LED3)
+
+/* If CONFIG_ARCH_LEDS is defined, then NuttX will control these LEDs as follows:
+ *
+ *                           ON                  OFF
+ * ------------------------- ---- ---- ---- ---- ---- ----
+ *                           LED1 LED2 LED3 LED1 LED2 LED3
+ * ------------------------- ---- ---- ---- ---- ---- ----
+ * LED_STARTED            0  OFF  OFF  OFF  ---  ---  ---
+ * LED_HEAPALLOCATE       1  ON   OFF  N/C  ---  ---  ---
+ * LED_IRQSENABLED        2  OFF  ON   N/C  ---  ---  ---
+ * LED_STACKCREATED       3  ON   ON   N/C  ---  ---  ---
+ * LED_INIRQ              4  N/C  N/C  ON   N/C  N/C  OFF
+ * LED_SIGNAL             4  N/C  N/C  ON   N/C  N/C  OFF
+ * LED_ASSERTION          4  N/C  N/C  ON   N/C  N/C  OFF
+ * LED_PANIC              5  ON   N/C  N/C  OFF  N/C  N/C
+ */
+
+#define LED_STARTED            0
+#define LED_HEAPALLOCATE       1
+#define LED_IRQSENABLED        2
+#define LED_STACKCREATED       3
+#define LED_INIRQ              4
+#define LED_SIGNAL             4
+#define LED_ASSERTION          4
+#define LED_PANIC              5
+
+#define LED_NVALUES            6
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Name:  pic32mx_ledinit and pic32mx_setled
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the following interfaces
+ *   are available to control the LEDs from user applicaitons.
+ *
+ ****************************************************************************/
+
+#ifndef CONFIG_ARCH_LEDS
+EXTERN void pic32mx_ledinit(void);
+#endif
+
+#ifndef CONFIG_ARCH_LEDS
+EXTERN void pic32mx_setled(int led, bool ledon);
+#endif
+
+#ifndef CONFIG_ARCH_LEDS
+EXTERN void pic32mx_setleds(uint8_t ledset);
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_UBW32_INCLUDE_BOARD_H */
diff --git a/nuttx/configs/ubw32/ostest/Make.defs b/nuttx/configs/ubw32/ostest/Make.defs
new file mode 100644
index 000000000..1aefa2844
--- /dev/null
+++ b/nuttx/configs/ubw32/ostest/Make.defs
@@ -0,0 +1,160 @@
+############################################################################
+# configs/ubw32/ostest/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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_PIC32MX_MICROCHIPW),y)
+  # Microchip toolchain under Windows
+  CROSSDEV = pic32-
+  WINTOOL = y
+  MAXOPTIMIZATION = -O2
+  ARCHCPUFLAGS = -mprocessor=elf32pic32mx -mno-float -mlong32 -membedded-data
+  ARCHPICFLAGS = -fpic -membedded-pic
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_PIC32MX_MICROCHIPW_LITE),y)
+  # Microchip toolchain under Windows
+  CROSSDEV = pic32-
+  WINTOOL = y
+#  MAXOPTIMIZATION = -O2
+  ARCHCPUFLAGS = -mprocessor=elf32pic32mx -mno-float -mlong32 -membedded-data
+  ARCHPICFLAGS = -fpic -membedded-pic
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_PIC32MX_MICROCHIPL),y)
+  # Microchip toolchain under Linux
+  CROSSDEV = pic32-
+  MAXOPTIMIZATION = -O2
+  ARCHCPUFLAGS = -mprocessor=elf32pic32mx -mno-float -mlong32 -membedded-data
+  ARCHPICFLAGS = -fpic -membedded-pic
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_PIC32MX_MICROCHIPL_LITE),y)
+  # Microchip toolchain under Linux
+  CROSSDEV = pic32-
+#  MAXOPTIMIZATION = -O2
+  ARCHCPUFLAGS = -mprocessor=elf32pic32mx -mno-float -mlong32 -membedded-data
+  ARCHPICFLAGS = -fpic -membedded-pic
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+
+ifeq ($(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}"
+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 = $(CROSSDEV)objdump
+
+ifeq ("${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 =
+
+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 =
+
+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/ubw32/ostest/appconfig b/nuttx/configs/ubw32/ostest/appconfig
new file mode 100644
index 000000000..6278529fa
--- /dev/null
+++ b/nuttx/configs/ubw32/ostest/appconfig
@@ -0,0 +1,39 @@
+############################################################################
+# configs/ubw32/ostest/appconfig
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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/ubw32/ostest/defconfig b/nuttx/configs/ubw32/ostest/defconfig
new file mode 100644
index 000000000..63bda799c
--- /dev/null
+++ b/nuttx/configs/ubw32/ostest/defconfig
@@ -0,0 +1,891 @@
+############################################################################
+# configs/ubw32/ostest/defconfig
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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 family.
+# 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)
+#   NOTE: The PIC32MX is always 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_NOINTC - define if the architecture does not
+#   support an interrupt controller or otherwise cannot support
+#   APIs like up_enable_irq() and up_disable_irq().
+# CONFIG_ARCH_VECNOTIRQ - Usually the interrupt vector number provided
+#   to interfaces like irq_attach() and irq_detach are the same as IRQ
+#   numbers that are provied to IRQ management functions like
+#   up_enable_irq() and up_disable_irq().  But that is not true for all
+#   interrupt controller implementations.  For example, the PIC32MX
+#   interrupt controller manages interrupt sources that have a many-to-one
+#   relationship to interrupt vectors. In such cases, CONFIG_ARCH_VECNOTIRQ
+#   must defined so that the OS logic will know not to assume it can use
+#   a vector number to enable or disable interrupts.
+# CONFIG_ARCH_IRQPRIO - The PIC32MX 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=mips
+CONFIG_ARCH_MIPS=y
+CONFIG_ARCH_MIPS32=y
+CONFIG_ARCH_CHIP=pic32mx
+CONFIG_ARCH_CHIP_PIC32MX460F512L=y
+CONFIG_ARCH_BOARD=ubw32
+CONFIG_ARCH_BOARD_UBW32=y
+CONFIG_BOARD_LOOPSPERMSEC=8079
+CONFIG_DRAM_SIZE=(32*1024)
+CONFIG_DRAM_START=0xa0000000
+CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+CONFIG_ARCH_NOINTC=n
+CONFIG_ARCH_VECNOTIRQ=y
+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
+
+#
+# Enable support for RAM-based functions
+# (If selected, then modifications are needed in ld.script as well)
+#
+CONFIG_PIC32MX_RAMFUNCS=n
+
+#
+# Identify toolchain and linker options
+#
+CONFIG_PIC32MX_MICROCHIPW=n
+CONFIG_PIC32MX_MICROCHIPL=n
+CONFIG_PIC32MX_MICROCHIPW_LITE=y
+CONFIG_PIC32MX_MICROCHIPL_LITE=n
+
+#
+#  Individual subsystems can be enabled:
+#
+
+CONFIG_PIC32MX_WDT=n
+CONFIG_PIC32MX_RTCC=n
+CONFIG_PIC32MX_TIMER1=n
+CONFIG_PIC32MX_TIMER2=n
+CONFIG_PIC32MX_TIMER3=n
+CONFIG_PIC32MX_TIMER4=n
+CONFIG_PIC32MX_TIMER5=n
+CONFIG_PIC32MX_IC1=n
+CONFIG_PIC32MX_IC2=n
+CONFIG_PIC32MX_IC3=n
+CONFIG_PIC32MX_IC4=n
+CONFIG_PIC32MX_IC5=n
+CONFIG_PIC32MX_OC1=n
+CONFIG_PIC32MX_OC2=n
+CONFIG_PIC32MX_OC3=n
+CONFIG_PIC32MX_OC4=n
+CONFIG_PIC32MX_OC5=n
+CONFIG_PIC32MX_I2C1=n
+CONFIG_PIC32MX_I2C2=n
+CONFIG_PIC32MX_SPI1=n
+CONFIG_PIC32MX_SPI2=n
+CONFIG_PIC32MX_UART1=y
+CONFIG_PIC32MX_UART2=n
+CONFIG_PIC32MX_PMP=n
+CONFIG_PIC32MX_ADC=n
+CONFIG_PIC32MX_CVR=n
+CONFIG_PIC32MX_CM1=n
+CONFIG_PIC32MX_CM2=n
+CONFIG_PIC32MX_OSC=y
+CONFIG_PIC32MX_DDP=n
+CONFIG_PIC32MX_FLASH=n
+CONFIG_PIC32MX_BMX=n
+CONFIG_PIC32MX_DMA=n
+CONFIG_PIC32MX_CHE=n
+CONFIG_PIC32MX_USBDEV=n
+CONFIG_PIC32MX_USBHOST=n
+CONFIG_PIC32MX_IOPORTA=y
+CONFIG_PIC32MX_IOPORTB=y
+CONFIG_PIC32MX_IOPORTC=y
+CONFIG_PIC32MX_IOPORTD=y
+CONFIG_PIC32MX_IOPORTE=y
+CONFIG_PIC32MX_IOPORTF=y
+CONFIG_PIC32MX_IOPORTG=y
+
+#
+# PIC32MX Configuration Settings
+#
+# DEVCFG0:
+#   CONFIG_PIC32MX_DEBUGGER - Background Debugger Enable. Default 3 (disabled). The
+#     value 2 enables.
+#   CONFIG_PIC32MX_ICESEL - In-Circuit Emulator/Debugger Communication Channel Select
+#     Default 1 (PG2)
+#   CONFIG_PIC32MX_PROGFLASHWP  - Program FLASH write protect.  Default 0xff (disabled)
+#   CONFIG_PIC32MX_BOOTFLASHWP - Default 1 (disabled)
+#   CONFIG_PIC32MX_CODEWP - Default 1 (disabled)
+# DEVCFG1: (All settings determined by selections in board.h)
+# DEVCFG2: (All settings determined by selections in board.h)
+# DEVCFG3: 
+#  CONFIG_PIC32MX_USBIDO - USB USBID Selection.  Default 1 if USB enabled
+#    (USBID pin is controlled by the USB module), but 0 (GPIO) otherwise.
+#  CONFIG_PIC32MX_VBUSIO - USB VBUSON Selection (Default 1 if USB enabled
+#    (VBUSON pin is controlled by the USB module, but 0 (GPIO) otherwise.
+#  CONFIG_PIC32MX_WDENABLE - Enabled watchdog on power up.  Default 0 (watchdog
+#    can be enabled later by software).
+#
+CONFIG_PIC32MX_DEBUGGER=2
+CONFIG_PIC32MX_ICESEL=1
+
+#
+# PIC32MX specific serial device driver settings
+#
+# CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
+#   console and ttys0 (default is the UART1).
+# CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
+#   This specific the size of the receive buffer
+# CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
+#   being sent.  This specific the size of the transmit buffer
+# CONFIG_UARTn_BAUD - The configure BAUD of the UART.  Must be
+# CONFIG_UARTn_BITS - The number of bits.  Must be either 7 or 8.
+# CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+# CONFIG_UARTn_2STOP - Two stop bits
+#
+CONFIG_UART1_SERIAL_CONSOLE=y
+CONFIG_UART2_SERIAL_CONSOLE=n
+
+CONFIG_UART1_TXBUFSIZE=256
+CONFIG_UART2_TXBUFSIZE=256
+
+CONFIG_UART1_RXBUFSIZE=256
+CONFIG_UART2_RXBUFSIZE=256
+
+CONFIG_UART1_BAUD=115200
+CONFIG_UART2_BAUD=115200
+
+CONFIG_UART1_BITS=8
+CONFIG_UART2_BITS=8
+
+CONFIG_UART1_PARITY=0
+CONFIG_UART2_PARITY=0
+
+CONFIG_UART1_2STOP=0
+CONFIG_UART2_2STOP=0
+
+#
+# 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_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_DEBUG_SCHED=n
+CONFIG_MM_REGIONS=1
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_RR_INTERVAL=0
+CONFIG_SCHED_INSTRUMENTATION=n
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_START_YEAR=2012
+CONFIG_START_MONTH=4
+CONFIG_START_DAY=26
+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_SCHED_WORKQUEUE=n
+CONFIG_SCHED_WORKPRIORITY=50
+CONFIG_SCHED_WORKPERIOD=(50*1000)
+CONFIG_SCHED_WORKSTACKSIZE=1024
+CONFIG_SIG_SIGWORK=4
+
+#
+# Settings for nxflat
+# 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_NXFLAT_DUMPBUFFER. Dump a most buffers that NXFFLAT deals
+#  with.  CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and
+#  CONFIG_DEBUG_BINFMT have to be defined or
+#  CONFIG_NXFLAT_DUMPBUFFER does nothing.
+# CONFIG_SYMTAB_ORDEREDBYNAME. Select if the system symbol table
+#  is ordered by symbol name
+#
+CONFIG_NXFLAT=n
+CONFIG_NXFLAT_DUMPBUFFER=n
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+
+#
+# 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_FS_ROMFS - Enable ROMFS filesystem support
+#
+CONFIG_FS_FAT=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_PL2303
+#   Enable compilation of the USB serial driver
+# CONFIG_PL2303_EPINTIN
+#   The logical 7-bit address of a hardware endpoint that supports
+#   interrupt IN operation
+# CONFIG_PL2303_EPBULKOUT
+#   The logical 7-bit address of a hardware endpoint that supports
+#   bulk OUT operation
+# CONFIG_PL2303_EPBULKIN
+#   The logical 7-bit address of a hardware endpoint that supports
+#   bulk IN operation
+# # CONFIG_PL2303_NWRREQS and CONFIG_PL2303_NRDREQS
+#   The number of write/read requests that can be in flight
+# CONFIG_PL2303_VENDORID and CONFIG_PL2303_VENDORSTR
+#   The vendor ID code/string
+# CONFIG_PL2303_PRODUCTID and CONFIG_PL2303_PRODUCTSTR
+#   The product ID code/string
+# CONFIG_PL2303_RXBUFSIZE and CONFIG_PL2303_TXBUFSIZE
+#   Size of the serial receive/transmit buffers
+#
+CONFIG_PL2303=n
+CONFIG_PL2303_EPINTIN=1
+CONFIG_PL2303_EPBULKOUT=2
+CONFIG_PL2303_EPBULKIN=5
+CONFIG_PL2303_NWRREQS=4
+CONFIG_PL2303_NRDREQS=4
+CONFIG_PL2303_VENDORID=0x067b
+CONFIG_PL2303_PRODUCTID=0x2303
+CONFIG_PL2303_VENDORSTR="Nuttx"
+CONFIG_PL2303_PRODUCTSTR="USBdev Serial"
+CONFIG_PL2303_RXBUFSIZE=512
+CONFIG_PL2303_TXBUFSIZE=512
+
+#
+# USB Storage Device Configuration
+#
+# CONFIG_USBMSC
+#   Enable compilation of the USB storage driver
+# CONFIG_USBMSC_EP0MAXPACKET
+#   Max packet size for endpoint 0
+# CONFIG_USBMSC_EPBULKOUT and CONFIG_USBMSC_EPBULKIN
+#   The logical 7-bit address of a hardware endpoints that support
+#   bulk OUT and IN operations
+# CONFIG_USBMSC_NWRREQS and CONFIG_USBMSC_NRDREQS
+#   The number of write/read requests that can be in flight
+# CONFIG_USBMSC_BULKINREQLEN and CONFIG_USBMSC_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_USBMSC_VENDORID and CONFIG_USBMSC_VENDORSTR
+#   The vendor ID code/string
+# CONFIG_USBMSC_PRODUCTID and CONFIG_USBMSC_PRODUCTSTR
+#   The product ID code/string
+# CONFIG_USBMSC_REMOVABLE
+#   Select if the media is removable
+#
+CONFIG_USBMSC=n
+CONFIG_USBMSC_EP0MAXPACKET=64
+CONFIG_USBMSC_EPBULKOUT=1
+CONFIG_USBMSC_EPBULKIN=2
+CONFIG_USBMSC_NRDREQS=8
+CONFIG_USBMSC_NWRREQS=2
+CONFIG_USBMSC_BULKINREQLEN=256
+CONFIG_USBMSC_BULKOUTREQLEN=64
+CONFIG_USBMSC_VENDORID=0x584e
+CONFIG_USBMSC_VENDORSTR="NuttX"
+CONFIG_USBMSC_PRODUCTID=0x5342
+CONFIG_USBMSC_PRODUCTSTR="USBdev Storage"
+CONFIG_USBMSC_VERSIONNO=0x0399
+CONFIG_USBMSC_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 - The target board can act
+#   as either the client side or server side of the test
+# CONFIG_EXAMPLE_NETTEST_PERFORMANCE - If set, then the
+#   client side simply receives messages forever, allowing
+#   measurement of throughput
+# CONFIG_EXAMPLE_NETTEST_NOMAC - Set if the hardware has
+#   no MAC address; one will be assigned
+# CONFIG_EXAMPLE_NETTEST_IPADDR - Target board IP address
+# CONFIG_EXAMPLE_NETTEST_DRIPADDR - Default router address
+# CONFIG_EXAMPLE_NETTEST_NETMASK - Network mask
+# CONFIG_EXAMPLE_NETTEST_CLIENTIP - IP address of the
+#   client side of the test (may be target or host)
+#
+CONFIG_EXAMPLE_NETTEST_SERVER=n
+CONFIG_EXAMPLE_NETTEST_PERFORMANCE=n
+CONFIG_EXAMPLE_NETTEST_NOMAC=y
+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_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_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=1
+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
+
+#
+# Settings for examples/usbstorage
+#
+# CONFIG_EXAMPLES_USBMSC_NLUNS
+#    Defines the number of logical units (LUNs) exported by the USB storage
+#    driver.  Each LUN corresponds to one exported block driver (or partition
+#    of a block driver).  May be 1, 2, or 3.  Default is 1.
+# CONFIG_EXAMPLES_USBMSC_DEVMINOR1
+#    The minor device number of the block driver for the first LUN. For
+#    example, N in /dev/mmcsdN.  Used for registering the block driver. Default
+#    is zero.
+# CONFIG_EXAMPLES_USBMSC_DEVPATH1
+#    The full path to the registered block driver.  Default is "/dev/mmcsd0"
+#  CONFIG_EXAMPLES_USBMSC_DEVMINOR2 and CONFIG_EXAMPLES_USBMSC_DEVPATH2
+#    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBMSC_NLUNS
+#    is 2 or 3.  No defaults.
+#  CONFIG_EXAMPLES_USBMSC_DEVMINOR3 and CONFIG_EXAMPLES_USBMSC_DEVPATH3
+#    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBMSC_NLUNS
+#    is 3.  No defaults.
+#
+#  If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB), then
+#  the example code will also manage the USB trace output.  The amount of trace output
+#  can be controlled using:
+#
+#  CONFIG_EXAMPLES_USBMSC_TRACEINIT
+#    Show initialization events
+#  CONFIG_EXAMPLES_USBMSC_TRACECLASS
+#    Show class driver events
+#  CONFIG_EXAMPLES_USBMSC_TRACETRANSFERS
+#    Show data transfer events
+#  CONFIG_EXAMPLES_USBMSC_TRACECONTROLLER
+#    Show controller events
+#  CONFIG_EXAMPLES_USBMSC_TRACEINTERRUPTS
+#    Show interrupt-related events.
+#
+CONFIG_EXAMPLES_USBMSC_NLUNS=1
+CONFIG_EXAMPLES_USBMSC_DEVMINOR1=0
+CONFIG_EXAMPLES_USBMSC_DEVPATH1="/dev/mmcsd0"
+CONFIG_EXAMPLES_USBMSC_TRACEINIT=n
+CONFIG_EXAMPLES_USBMSC_TRACECLASS=n
+CONFIG_EXAMPLES_USBMSC_TRACETRANSFERS=n
+CONFIG_EXAMPLES_USBMSC_TRACECONTROLLER=n
+CONFIG_EXAMPLES_USBMSC_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 PIC32MX 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=2048
+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/ubw32/ostest/ld.script b/nuttx/configs/ubw32/ostest/ld.script
new file mode 100644
index 000000000..ff4d1c79f
--- /dev/null
+++ b/nuttx/configs/ubw32/ostest/ld.script
@@ -0,0 +1,317 @@
+/****************************************************************************
+ * configs/ubw32/ostest/ld.script
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+/* Memory Regions ***********************************************************/
+
+MEMORY
+{
+	/* The PIC32MX460F512L has 512Kb of program FLASH at physical address
+	 * 0x1d000000 but is always accessed at KSEG0 address 0x9d00:0000
+	 */
+	
+	kseg0_progmem  (rx) : ORIGIN = 0x9d000000, LENGTH = 512K
+
+	/* The PIC32MX460F512L has 12Kb of boot FLASH at physical address
+	 * 0x1fc00000.  The initial reset vector is in KSEG1, but all other
+	 * accesses are in KSEG0.
+	 *
+	 *   REGION        PHYSICAL   KSEG   SIZE
+	 *   DESCRIPTION   START ADDR        (BYTES)
+	 *   ------------- ---------- ------ ----------------------
+	 *   Exceptions:*
+	 *     Reset       0x1fc00000 KSEG1  512         512
+	 *     TLB Refill  0x1fc00200 KSEG1  256         768
+	 *     Cache Error 0x1fc00300 KSEG1  128         896
+	 *     Others      0x1fc00380 KSEG1  128        1024 (1Kb)
+	 *     Interrupt   0x1fc00400 KSEG1  128        1152
+	 *     JTAG        0x1fc00480 KSEG1  16         1168
+	 *   Exceptions    0x1fc00490 KSEG0  8192-1168  8192 (4Kb)
+	 *   Debug code    0x1fc02000 KSEG1  4096-16   12272
+	 *   DEVCFG3-0     0x1fc02ff0 KSEG1  16        12288 (12Kb)
+	 *
+	 * Exceptions assume:
+	 *
+	 *   STATUS: BEV=0/1 and EXL=0
+	 *   CAUSE:  IV=1
+	 *   JTAG:   ProbEn=0
+	 *   And multi-vector support disabled
+	 */
+
+	kseg1_reset    (rx) : ORIGIN = 0xbfc00000, LENGTH = 384
+	kseg1_genexcpt (rx) : ORIGIN = 0xbfc00180, LENGTH = 128
+	kseg1_ebexcpt  (rx) : ORIGIN = 0xbfc00200, LENGTH = 128
+	kseg1_bevexcpt (rx) : ORIGIN = 0xbfc00380, LENGTH = 128
+	kseg1_intexcpt (rx) : ORIGIN = 0xbfc00400, LENGTH = 128
+	kseg1_dbgexcpt (rx) : ORIGIN = 0xbfc00480, LENGTH = 16
+	kseg0_bootmem  (rx) : ORIGIN = 0x9fc00490, LENGTH = 8192-1168
+	kseg1_dbgcode  (rx) : ORIGIN = 0xbfc02000, LENGTH = 4096-16
+	kseg1_devcfg    (r) : ORIGIN = 0xbfc02ff0, LENGTH = 16
+
+	/* The PIC32MX460F512L has 32Kb of data memory at physical address
+	 * 0x00000000.  Since the PIC32MX has no data cache, this memory is
+	 * always accessed through KSEG1.
+	 *
+	 * When used with MPLAB, we need to set aside 512 bytes of memory
+	 * for use by MPLAB.
+	 */
+
+	kseg1_datamem (w!x) : ORIGIN = 0xa0000200, LENGTH = 32K - 512
+}
+
+OUTPUT_FORMAT("elf32-tradlittlemips")
+OUTPUT_ARCH(pic32mx)
+ENTRY(__start)
+
+SECTIONS
+{
+	/* Boot FLASH sections */
+
+	.reset :
+	{
+		KEEP (*(.reset))
+	} > kseg1_reset
+
+	/* Exception handlers.  The following is assumed:
+	 *
+	 *   STATUS: BEV=1 and EXL=0
+	 *   CAUSE:  IV=1
+	 *   JTAG:   ProbEn=0
+	 *   And multi-vector support disabled
+	 *
+	 * In that configuration, the vector locations become:
+	 *
+	 *   Reset, Soft Reset  bfc0:0000
+	 *   TLB Refill         bfc0:0200
+	 *   Cache Error        bfc0:0300
+	 *   All others         bfc0:0380
+	 *   Interrupt          bfc0:0400
+	 *   EJTAG Debug        bfc0:0480
+	 */
+
+	 /* KSEG1 exception handler "trampolines" */
+
+	.gen_excpt :
+	{
+		KEEP (*(.gen_excpt))
+	} > kseg1_genexcpt
+
+	.ebase_excpt :
+	{
+		KEEP (*(.ebase_excpt))
+	} > kseg1_ebexcpt
+
+	.bev_excpt :
+	{
+		KEEP (*(.bev_excpt))
+	} > kseg1_bevexcpt
+
+	.int_excpt :
+	{
+		KEEP (*(.int_excpt))
+	} > kseg1_intexcpt
+
+	.dbg_excpt = ORIGIN(kseg1_dbgexcpt);
+
+	.start :
+	{
+		/* KSEG0 Reset startup logic */
+
+		*(.start)
+
+		/* KSEG0 exception handlers */
+
+		*(.nmi_handler)
+		*(.bev_handler)
+		*(.int_handler)
+	} > kseg0_bootmem
+
+	.dbg_code = ORIGIN(kseg1_dbgcode);
+
+	.devcfg :
+	{
+		KEEP (*(.devcfg))
+	} > kseg1_devcfg
+
+	/* Program FLASH sections */
+
+	.text :
+	{
+		_stext = ABSOLUTE(.);
+		*(.text .text.*)		
+		*(.stub)		
+		KEEP (*(.text.*personality*))
+		*(.gnu.linkonce.t.*)
+		*(.gnu.warning)
+		*(.mips16.fn.*)
+		*(.mips16.call.*)
+
+		/* Read-only data is included in the text section */
+
+		*(.rodata .rodata.*)		
+		*(.rodata1)
+		*(.gnu.linkonce.r.*)
+
+		/* Small initialized constant global and static data */
+	
+		*(.sdata2 .sdata2.*)
+		*(.gnu.linkonce.s2.*)
+
+		/* Uninitialized constant global and static data */
+
+		*(.sbss2 .sbss2.*)
+		*(.gnu.linkonce.sb2.*)
+		_etext = ABSOLUTE(.);
+	} > kseg0_progmem
+
+	/* Initialization data begins here in progmem */
+
+	_data_loaddr = LOADADDR(.data);
+
+	.eh_frame_hdr : { *(.eh_frame_hdr) }
+	.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) }
+
+	/* RAM functions are positioned at the beginning of RAM so that
+	 * they can be guaranteed to satisfy the 2Kb alignment requirement.
+	 */
+
+/* This causes failures if there are no RAM functions
+	.ramfunc ALIGN(2K) :
+	{
+		_sramfunc =  ABSOLUTE(.);
+		*(.ramfunc	.ramfunc.*)
+		_eramfunc =  ABSOLUTE(.);
+	} > kseg1_datamem AT > kseg0_progmem
+
+	_ramfunc_loadaddr = LOADADDR(.ramfunc);
+	_ramfunc_sizeof   = SIZEOF(.ramfunc);
+	_bmxdkpba_address = _sramfunc - ORIGIN(kseg1_datamem) ;
+	_bmxdudba_address = LENGTH(kseg1_datamem) ;
+	_bmxdupba_address = LENGTH(kseg1_datamem) ;
+*/
+
+	.data :
+	{
+		_sdata = ABSOLUTE(.);
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		KEEP (*(.gnu.linkonce.d.*personality*))
+		*(.data1)
+	} > kseg1_datamem AT > kseg0_progmem
+
+	.eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) }
+	_gp = ALIGN(16) + 0x7FF0 ;
+
+	.got :
+	{
+		*(.got.plt) *(.got)
+	} > kseg1_datamem AT > kseg0_progmem
+
+	.sdata :
+	{
+		*(.sdata .sdata.* .gnu.linkonce.s.*)
+	} > kseg1_datamem AT > kseg0_progmem
+
+	.lit8 :
+	{
+		*(.lit8)
+	} > kseg1_datamem AT > kseg0_progmem
+
+	.lit4 :
+	{
+		*(.lit4)
+		_edata = ABSOLUTE(.);
+	} >kseg1_datamem AT>kseg0_progmem
+
+	.sbss :
+	{
+		_sbss = ABSOLUTE(.);
+		*(.dynsbss)
+		*(.sbss .sbss.* .gnu.linkonce.sb.*)
+		*(.scommon)
+	} >kseg1_datamem
+
+	.bss :
+	{
+		*(.dynbss)
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		_ebss = ABSOLUTE(.);
+	} > kseg1_datamem
+
+	/* 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) }
+
+	/* DWARF debug sections */
+	/* DWARF 1 */
+
+	.debug 0 : { *(.debug) }
+	.line 0 : { *(.line) }
+
+	/* GNU DWARF 1 extensions */
+
+	.debug_srcinfo 0 : { *(.debug_srcinfo) }
+	.debug_sfnames 0 : { *(.debug_sfnames) }
+
+	/* DWARF 1.1 and DWARF 2 */
+
+	.debug_aranges 0 : { *(.debug_aranges) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+
+	/* DWARF 2 */
+
+	.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_frame 0 : { *(.debug_frame) }
+	.debug_str 0 : { *(.debug_str) }
+	.debug_loc 0 : { *(.debug_loc) }
+	.debug_macinfo 0 : { *(.debug_macinfo) }
+
+	/* SGI/MIPS DWARF 2 extensions */
+
+	.debug_weaknames 0 : { *(.debug_weaknames) }
+	.debug_funcnames 0 : { *(.debug_funcnames) }
+	.debug_typenames 0 : { *(.debug_typenames) }
+	.debug_varnames 0 : { *(.debug_varnames) }
+
+	/DISCARD/ : { *(.note.GNU-stack) }
+}
diff --git a/nuttx/configs/ubw32/ostest/setenv.sh b/nuttx/configs/ubw32/ostest/setenv.sh
new file mode 100755
index 000000000..b1ba2e9b0
--- /dev/null
+++ b/nuttx/configs/ubw32/ostest/setenv.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+# configs/ubw32/ostest/setenv.sh
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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 [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then export PATH_ORIG="${PATH}"; fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+# This the Cygwin path to the location where I installed the MicroChip
+# PIC32MX toolchain under windows.  This is *not* the default install
+# location so you will probably have to edit this.  You will also have
+# to edit this if you install a different version of if you install
+# the Linux PIC32MX toolchain as well
+export TOOLCHAIN_BIN="/cygdrive/c/MicroChip/mplabc32/v1.12/bin"
+
+# This is the path to the toosl subdirectory
+export PIC32TOOL_DIR="${WD}/configs/ubw32/tools"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:${PIC32TOOL_DIR}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/ubw32/src/Makefile b/nuttx/configs/ubw32/src/Makefile
new file mode 100644
index 000000000..4a890cc34
--- /dev/null
+++ b/nuttx/configs/ubw32/src/Makefile
@@ -0,0 +1,95 @@
+############################################################################
+# configs/ubw32/src/Makefile
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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		= 
+CSRCS		= up_boot.c up_leds.c
+
+ifeq ($(CONFIG_NSH_ARCHINIT),y)
+CSRCS		+= up_nsh.c
+endif
+
+ifeq ($(CONFIG_PIC32MX_USBDEV),y)
+CSRCS		+= up_usbdev.c
+ifeq ($(CONFIG_EXAMPLES_USBTERM_DEVINIT),y)
+CSRCS		+= up_usbterm.c
+endif
+endif
+
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
+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 $(ARCH_SRCDIR)/mips32}"
+else
+  CFLAGS	+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/mips32
+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/ubw32/src/ubw32-internal.h b/nuttx/configs/ubw32/src/ubw32-internal.h
new file mode 100644
index 000000000..ab1710ea5
--- /dev/null
+++ b/nuttx/configs/ubw32/src/ubw32-internal.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+ * configs/ubw32/src/ubw32-internal.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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_UBW32_SRC_UBW32_INTERNAL_H
+#define __CONFIGS_UBW32_SRC_UBW32_INTERNAL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the UBW32 board.
+ *
+ ************************************************************************************/
+
+#if defined(CONFIG_PIC32MX_SPI1) || defined(CONFIG_PIC32MX_SPI2)
+EXTERN void weak_function pic32mx_spiinitialize(void);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_ledinit
+ *
+ * Description:
+ *   Configure on-board LEDs if LED support has been selected.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+EXTERN void pic32mx_ledinit(void);
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_UBW32_SRC_UBW32_INTERNAL_H */
diff --git a/nuttx/configs/ubw32/src/up_boot.c b/nuttx/configs/ubw32/src/up_boot.c
new file mode 100644
index 000000000..7e818f270
--- /dev/null
+++ b/nuttx/configs/ubw32/src/up_boot.c
@@ -0,0 +1,93 @@
+/************************************************************************************
+ * configs/ubw32/src/up_boot.c
+ * arch/mips/src/board/up_boot.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 "up_internal.h"
+
+#include "pic32mx-internal.h"
+#include "ubw32-internal.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pic32mx_boardinitialize
+ *
+ * Description:
+ *   All PIC32MX 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.
+ *
+ ************************************************************************************/
+
+void pic32mx_boardinitialize(void)
+{
+  /* Configure SPI chip selects if 1) at least one SPI is enabled, and 2) the weak
+   * function pic32mx_spiinitialize() has been brought into the link.
+   */
+
+#if defined(CONFIG_PIC32MX_SPI1) || defined(CONFIG_PIC32MX_SPI2)
+  if (pic32mx_spiinitialize)
+    {
+      pic32mx_spiinitialize();
+    }
+#endif
+
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  pic32mx_ledinit();
+#endif
+}
diff --git a/nuttx/configs/ubw32/src/up_leds.c b/nuttx/configs/ubw32/src/up_leds.c
new file mode 100644
index 000000000..dbbffdff5
--- /dev/null
+++ b/nuttx/configs/ubw32/src/up_leds.c
@@ -0,0 +1,266 @@
+/****************************************************************************
+ * configs/ubw32/src/up_leds.c
+ * arch/arm/src/board/up_leds.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 "pic32mx-internal.h"
+#include "ubw32-internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+/* LED Configuration ********************************************************/
+/* ----- ----- -------------------------------------------------------------
+ * LABEL COLOR CONTROL
+ * ----- ----- -------------------------------------------------------------
+ * USB   Green   RF3. This could be used by software if USB is not used. 
+ *                    Otherwise, RF3 is used as the USBID signal.
+ * LED1  While   RE2, Pulled up.  Low value illuminates
+ * LED2  Red     RE1, Pulled up.  Low value illuminates
+ * LED3  Yellow  RE0, Pulled up.  Low value illuminates
+ * PWR   Blue    Illuminated when 5V is present, not controlled by software
+ *
+ * If CONFIG_ARCH_LEDS is defined, then NuttX will control these LEDs as follows:
+ *
+ *                           ON                  OFF
+ * ------------------------- ---- ---- ---- ---- ---- ----
+ *                           LED1 LED2 LED3 LED1 LED2 LED3
+ * ------------------------- ---- ---- ---- ---- ---- ----
+ * LED_STARTED            0  OFF  OFF  OFF  ---  ---  ---
+ * LED_HEAPALLOCATE       1  ON   OFF  N/C  ---  ---  ---
+ * LED_IRQSENABLED        2  OFF  ON   N/C  ---  ---  ---
+ * LED_STACKCREATED       3  ON   ON   N/C  ---  ---  ---
+ * LED_INIRQ              4  N/C  N/C  ON   N/C  N/C  OFF
+ * LED_SIGNAL             4  N/C  N/C  ON   N/C  N/C  OFF
+ * LED_ASSERTION          4  N/C  N/C  ON   N/C  N/C  OFF
+ * LED_PANIC              5  ON   N/C  N/C  OFF  N/C  N/C
+ */
+
+#define GPIO_LED_1   (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTE|GPIO_PIN2)
+#define GPIO_LED_2   (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTE|GPIO_PIN1)
+#define GPIO_LED_3   (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTE|GPIO_PIN0)
+
+/* LED Management Definitions ***********************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+#  define LED_OFF 0
+#  define LED_ON  1
+#  define LED_NC  2
+#endif
+
+/* Debug ********************************************************************/
+
+#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_LEDS)
+#  define leddbg  lldbg
+#  ifdef CONFIG_DEBUG_VERBOSE
+#    define ledvdbg lldbg
+#  else
+#    define ledvdbg(x...)
+#  endif
+#else
+#  undef CONFIG_DEBUG_LEDS
+#  undef CONFIG_DEBUG_VERBOSE
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private types
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+struct led_setting_s
+{
+  uint8_t led1   : 2;
+  uint8_t led2   : 2;
+  uint8_t led3   : 2;
+  uint8_t unused : 2;
+};
+#endif
+
+ /****************************************************************************
+ * Private Data
+ ****************************************************************************/
+/* If CONFIG_ARCH_LEDS is defined then NuttX will control the LEDs.  The
+ * following structures identified the LED settings for each NuttX LED state.
+ */
+
+#ifdef CONFIG_ARCH_LEDS
+static const struct led_setting_s g_ledonvalues[LED_NVALUES] =
+{
+  {LED_OFF, LED_OFF, LED_OFF, LED_OFF},
+  {LED_ON,  LED_OFF, LED_NC,  LED_OFF},
+  {LED_OFF, LED_ON,  LED_NC,  LED_OFF},
+  {LED_ON,  LED_ON,  LED_NC,  LED_OFF},
+  {LED_NC,  LED_NC,  LED_ON,  LED_OFF},
+  {LED_ON,  LED_NC,  LED_NC,  LED_OFF},
+};
+
+static const struct led_setting_s g_ledoffvalues[LED_NVALUES] =
+{
+  {LED_NC,  LED_NC,  LED_NC,  LED_OFF},
+  {LED_NC,  LED_NC,  LED_NC,  LED_OFF},
+  {LED_NC,  LED_NC,  LED_NC,  LED_OFF},
+  {LED_NC,  LED_NC,  LED_NC,  LED_OFF}, 
+  {LED_NC,  LED_NC,  LED_OFF, LED_OFF},
+  {LED_OFF, LED_NC,  LED_NC,  LED_OFF},
+};
+
+/* If CONFIG_ARCH_LEDS is not defined, the the user can control the LEDs in
+ * any way.  The following array simply maps the PIC32MX_UBW32_LEDn
+ * index values to the correct LED pin configuration.
+ */
+
+#else
+static const uint16_t g_ledpincfg[PIC32MX_UBW32_NLEDS] =
+{
+  GPIO_LED_1, GPIO_LED_2, GPIO_LED_3
+};
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_setleds
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void up_setleds(FAR const struct led_setting_s *setting)
+{
+  if (setting->led1 != LED_NC)
+    {
+      pic32mx_gpiowrite(GPIO_LED_1, setting->led1 == LED_ON);
+    }
+
+  if (setting->led2 != LED_NC)
+    {
+      pic32mx_gpiowrite(GPIO_LED_2, setting->led2 == LED_ON);
+    }
+
+  if (setting->led3 != LED_NC)
+    {
+      pic32mx_gpiowrite(GPIO_LED_3, setting->led3 == LED_ON);
+    }
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: pic32mx_ledinit
+ ****************************************************************************/
+
+void pic32mx_ledinit(void)
+{
+  /* Configure output pins */
+
+  pic32mx_configgpio(GPIO_LED_1);
+  pic32mx_configgpio(GPIO_LED_2);
+  pic32mx_configgpio(GPIO_LED_3);
+}
+
+/****************************************************************************
+ * Name: pic32mx_setled
+ ****************************************************************************/
+
+#ifndef CONFIG_ARCH_LEDS
+void pic32mx_setled(int led, bool ledon)
+{
+  if ((unsigned)led < PIC32MX_UBW32_NLEDS)
+    {
+      pic32mx_gpiowrite(g_ledpincfg[led], ledon);
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: pic32mx_setleds
+ ****************************************************************************/
+
+#ifndef CONFIG_ARCH_LEDS
+void pic32mx_setleds(uint8_t ledset)
+{
+  pic32mx_setled(PIC32MX_UBW32_LED1, (ledset & PIC32MX_UBW32_LED1_BIT) != 0);
+  pic32mx_setled(PIC32MX_UBW32_LED2, (ledset & PIC32MX_UBW32_LED2_BIT) != 0);
+  pic32mx_setled(PIC32MX_UBW32_LED3, (ledset & PIC32MX_UBW32_LED3_BIT) != 0);
+}
+#endif
+
+/****************************************************************************
+ * Name: up_ledon
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void up_ledon(int led)
+{
+  if ((unsigned)led < LED_NVALUES)
+    {
+      up_setleds(&g_ledonvalues[led]);
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: up_ledoff
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void up_ledoff(int led)
+{
+  if ((unsigned)led < LED_NVALUES)
+    {
+      up_setleds(&g_ledoffvalues[led]);
+    }
+}
+#endif
diff --git a/nuttx/configs/ubw32/src/up_nsh.c b/nuttx/configs/ubw32/src/up_nsh.c
new file mode 100644
index 000000000..5e5895b63
--- /dev/null
+++ b/nuttx/configs/ubw32/src/up_nsh.c
@@ -0,0 +1,119 @@
+/****************************************************************************
+ * config/ubw32/src/up_nsh.c
+ * arch/arm/src/board/up_nsh.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 "pic32mx-internal.h"
+#include "ubw32-internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* 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
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_usbdevinitialize
+ *
+ * Description:
+ *   Initialize SPI-based microSD.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_USBDEV
+static int nsh_usbdevinitialize(void)
+{
+  /* The UBW32 has no way to know when the USB is connected.  So we will fake
+   * it and tell the USB driver that the USB is connected now.
+   */
+
+  pic32mx_usbattach();
+  return OK;
+}
+#else
+#  define nsh_usbdevinitialize() (OK)
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+  int ret;
+
+  /* Initialize USB device */
+
+  ret = nsh_usbdevinitialize();
+  return ret;
+}
diff --git a/nuttx/configs/ubw32/src/up_usbdev.c b/nuttx/configs/ubw32/src/up_usbdev.c
new file mode 100644
index 000000000..9a2f21237
--- /dev/null
+++ b/nuttx/configs/ubw32/src/up_usbdev.c
@@ -0,0 +1,152 @@
+/************************************************************************************
+ * configs/ubw32/src/up_usbdev.c
+ * arch/arm/src/board/up_usbdev.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+
+#include "pic32mx-internal.h"
+#include "ubw32-internal.h"
+
+#if defined(CONFIG_PIC32MX_USBDEV)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pic32mx_usbdevinitialize
+ *
+ * Description:
+ *   Called to configure the mini-A/B J5 on the UBW32 for the
+ *   USB device
+ *
+ ************************************************************************************/
+
+void weak_function pic32mx_usbdevinitialize(void)
+{
+  /* Connect the PHY to the USB mini-B port.  Order and timing matter! */
+
+  pic32mx_configgpio(GPIO_USB_PGOOD);
+
+  /* Notes from the Sure Electronics sample code:
+   *
+   * "The USB specifications require that USB peripheral devices must never source
+   *  current onto the Vbus pin.  Additionally, USB peripherals should not source
+   *  current on D+ or D- when the host/hub is not actively powering the Vbus line.
+   *  When designing a self powered (as opposed to bus powered) USB peripheral
+   *  device, the firmware should make sure not to turn on the USB module and D+
+   *  or D- pull up resistor unless Vbus is actively powered.  Therefore, the
+   *  firmware needs some means to detect when Vbus is being powered by the host.
+   *  A 5V tolerant I/O pin can be connected to Vbus (through a resistor), and
+   *  can be used to detect when Vbus is high (host actively powering), or low
+   *  (host is shut down or otherwise not supplying power).  The USB firmware
+   *  can then periodically poll this I/O pin to know when it is okay to turn on
+   *  the USB module/D+/D- pull up resistor.  When designing a purely bus powered
+   *  peripheral device, it is not possible to source current on D+ or D- when the
+   *  host is not actively providing power on Vbus. Therefore, implementing this
+   *  bus sense feature is optional. ..."
+   */
+
+#ifdef CONFIG_USBHOST
+#endif
+    
+  /* "If the host PC sends a GetStatus (device) request, the firmware must respond
+   *  and let the host know if the USB peripheral device is currently bus powered
+   *  or self powered.  See chapter 9 in the official USB specifications for details
+   *  regarding this request.  If the peripheral device is capable of being both
+   *  self and bus powered, it should not return a hard coded value for this request.
+   *  Instead, firmware should check if it is currently self or bus powered, and
+   *  respond accordingly.  If the hardware has been configured like demonstrated
+   *  on the PICDEM FS USB Demo Board, an I/O pin can be polled to determine the
+   *  currently selected power source. ..."
+   */
+
+#ifdef CONFIG_USB_PWRSENSE
+#endif
+}
+
+/************************************************************************************
+ * Name: pic32mx_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
+ *   stm32_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 pic32mx_usbpullup(FAR struct usbdev_s *dev,  bool enable)
+{
+  /* The UBW32 does not have a USB pull-up */
+
+  return OK;
+}
+
+/************************************************************************************
+ * Name: pic32mx_usbsuspend
+ *
+ * Description:
+ *   Board logic must provide the stm32_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 pic32mx_usbsuspend(FAR struct usbdev_s *dev, bool resume)
+{
+  /* Do nothing */
+}
+
+#endif /* CONFIG_PIC32MX_USBDEV */
diff --git a/nuttx/configs/ubw32/src/up_usbterm.c b/nuttx/configs/ubw32/src/up_usbterm.c
new file mode 100644
index 000000000..401d17026
--- /dev/null
+++ b/nuttx/configs/ubw32/src/up_usbterm.c
@@ -0,0 +1,105 @@
+/****************************************************************************
+ * configs/ubw32/src/up_usbterm.c
+ * arch/arm/src/board/up_usbterm.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+
+#include "pic32mx-internal.h"
+#include "ubw32-internal.h"
+
+#if defined(CONFIG_PIC32MX_USBDEV) && defined(CONFIG_EXAMPLES_USBTERM_DEVINIT)
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name:
+ *
+ * Description:
+ *   If CONFIG_EXAMPLES_USBTERM_DEVINIT is defined, then the example will
+ *   call this user provided function as part of its initialization.
+ *
+ ****************************************************************************/
+
+int usbterm_devinit(void)
+{
+  /* The UBW32 has no way to know when the USB is connected.  So we will fake
+   * it and tell the USB driver that the USB is connected now.
+   *
+   * If examples/usbterm is built as an NSH built-in application, then
+   * pic32mx_usbattach() will be called in nsh_archinitialize().
+   */
+
+#ifndef CONFIG_EXAMPLES_USBTERM_BUILTIN
+  pic32mx_usbattach();
+#endif
+  return OK;
+}
+
+/****************************************************************************
+ * Name:
+ *
+ * Description:
+ *   If CONFIG_EXAMPLES_USBTERM_DEVINIT is defined, then the example will
+ *   call this user provided function as part of its termination sequence.
+ *
+ ****************************************************************************/
+
+void usbterm_devuninit(void)
+{
+  /* Tell the USB driver that the USB is no longer connected */
+
+  pic32mx_usbdetach();
+}
+
+#endif /* CONFIG_PIC32MX_USBDEV && CONFIG_EXAMPLES_USBTERM_DEVINIT */
diff --git a/nuttx/configs/ubw32/tools/Makefile b/nuttx/configs/ubw32/tools/Makefile
new file mode 100644
index 000000000..8282ae530
--- /dev/null
+++ b/nuttx/configs/ubw32/tools/Makefile
@@ -0,0 +1,51 @@
+############################################################################
+# configs/ubw32/tools/Makefile
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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.
+#
+############################################################################
+
+all: mkpichex
+default: mkpichex
+.PHONY: clean
+
+# Add CFLAGS=-g on the make command line to build debug versions
+
+CFLAGS = -O2 -Wall -I.
+
+# mkpichex - Convert virtual addresses in nuttx.hex to physical addresses
+
+mkconfig: mkpichex.c mkpichex.c
+	@gcc $(CFLAGS) -o mkpichex mkpichex.c
+
+clean:
+	@rm -f *.o *.a *~ .*.swp
+	@rm -f mkpichex mkpichex.exe
diff --git a/nuttx/configs/ubw32/tools/mkpichex.c b/nuttx/configs/ubw32/tools/mkpichex.c
new file mode 100644
index 000000000..9f2f0127b
--- /dev/null
+++ b/nuttx/configs/ubw32/tools/mkpichex.c
@@ -0,0 +1,315 @@
+/****************************************************************************
+ * configs/ubw32/tools/mkpichex.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define MAX_LINE         1024
+
+/* Line offsets */
+
+#define START_OFFSET     0
+#define LEN_OFFSET       1
+#define ADDR_OFFSET      (LEN_OFFSET + 2)
+#define TYPE_OFFSET      (ADDR_OFFSET + 4)
+#define PAYLOAD_OFFSET   (TYPE_OFFSET + 2)
+#define CHKSUM_OFFSET(n) (PAYLOAD_OFFSET+2*(n))
+
+/* Record types:
+ *
+ * 00, data record, contains data and 16-bit address. The format described
+ *     above.
+ * 01, End Of File record, a file termination record. No data. Has to be
+ *     the last line of the file, only one per file permitted. Usually
+ *     ':00000001FF'. Originally the End Of File record could contain a
+ *     start address for the program being loaded, e.g. :00AB2F0125
+ *     would make a jump to address AB2F. This was convenient when programs
+ *     were loaded from punched paper tape.
+ * 02, Extended Segment Address Record, segment-base address. Used when 16
+ *     bits are not enough, identical to 80x86 real mode addressing. The
+ *     address specified by the 02 record is multiplied by 16 (shifted 4
+ *     bits left) and added to the subsequent 00 record addresses. This
+ *     allows addressing of up to a megabyte of address space. The address
+ *     field of this record has to be 0000, the byte count is 02 (the segment
+ *     is 16-bit). The least significant hex digit of the segment address is
+ *     always 0.
+ * 03, Start Segment Address Record. For 80x86 processors, it specifies the
+ *     initial content of the CS:IP registers. The address field is 0000, the
+ *     byte count is 04, the first two bytes are the CS value, the latter two
+ *     are the IP value.
+ * 04, Extended Linear Address Record, allowing for fully 32 bit addressing.
+ *     The address field is 0000, the byte count is 02. The two data bytes
+ *     represent the upper 16 bits of the 32 bit address, when combined with
+ *     the address of the 00 type record.
+ * 05, Start Linear Address Record. The address field is 0000, the byte
+ *     count is 04. The 4 data bytes represent the 32-bit value loaded into
+ *     the EIP register of the 80386 and higher CPU.
+ */
+
+#define TYPE_DATA     0
+#define TYPE_EOF      1
+#define TYPE_EXTSEG   2
+#define TYPE_STARTSEG 3
+#define TYPE_EXTLIN   4
+#define TYPE_STARTLIN 5
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct hex_s
+{
+  unsigned char  len;      /* Length of the data payload */
+  unsigned char  type;     /* Record type */
+  unsigned short addr;     /* Lower 16-bit address */
+};
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static char line[MAX_LINE+1];
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static inline char *getfilepath(const char *path, const char *name, const char *extension)
+{
+  snprintf(line, MAX_LINE, "%s/%s.%s", path, name, extension);
+  line[MAX_LINE] = '\0';
+  return strdup(line);
+}
+
+static void show_usage(const char *progname)
+{
+  fprintf(stderr, "USAGE: %s <abs path to nuttx.hex>\n", progname);
+  exit(1);
+}
+
+static unsigned char get4(char hex)
+{
+  if (hex >= '0' && hex <= '9')
+    {
+      return hex - '0';
+    }
+  else if (hex >= 'a' && hex <= 'f')
+    {
+      return hex - 'a' + 10;
+    }
+  else if (hex >= 'A' && hex <= 'F')
+    {
+      return hex - 'A' + 10;
+    }
+
+  fprintf(stderr, "Bad hex character code: %s\n", line);
+  exit(2);
+}
+
+static unsigned char get8(const char *ptr)
+{
+  return get4(ptr[0]) << 4 | get4(ptr[1]);
+}
+
+static unsigned short get16(const char *ptr)
+{
+  return (unsigned short)get8(&ptr[0]) << 8 | (unsigned short)get8(&ptr[2]);
+}
+
+static int parse_line(struct hex_s *hexline)
+{
+  /* :LLAAAATT... */
+
+  if (line[START_OFFSET] != ':')
+    {
+      fprintf(stderr, "Bad start code: %s\n", line);
+      return 1;
+    }
+
+  hexline->len  = get8(&line[LEN_OFFSET]);
+  hexline->addr = get16(&line[ADDR_OFFSET]);
+  hexline->type = get8(&line[TYPE_OFFSET]);
+  return 0;
+}
+
+#if 0
+static unsigned char checksum(chksum_ndx)
+{
+  int chksum = 0;
+  int ndx;
+
+  for (ndx = 1; ndx < chksum_ndx; ndx += 2)
+    {
+      chksum += (int)get8(&line[ndx]);
+    }
+  return (unsigned char)((-chksum) & 0xff);
+}
+#endif
+
+static void adjust_extlin(struct hex_s *hexline)
+{
+  unsigned short segment;
+  int chksum;
+
+  /* Make sure that the payload is exactly 2 bytes */
+
+  if (hexline->len != 2)
+    {
+      fprintf(stderr, "Bad length on extended segment address record\n");
+      fprintf(stderr, "  %s", line);
+    }
+
+  /* And the address field is supposed to be zero */
+
+  if (hexline->addr != 0)
+    {
+      fprintf(stderr, "Bad address on extended segment address record\n");
+      fprintf(stderr, "  %s", line);
+    }
+
+  /* Decode the 2 byte payload */
+
+  segment = get16(&line[PAYLOAD_OFFSET]);
+
+  /* Convert the address to a 29-bit physical address */
+
+  segment &= 0x1fff;
+
+  /* Recalculate the checksum and make sure that there is a null terminator
+   * Since len=2, addr=0, type=4, the is a trivial calculation.
+   */
+
+  chksum = (-(segment + (segment >> 8) + 6)) & 0xff;
+
+  /* Then create the new output record */
+
+  snprintf(line, MAX_LINE-PAYLOAD_OFFSET, ":02000004%04X%02X\n", segment, chksum);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv, char **envp)
+{
+  struct hex_s hexline;
+  char *srcfile;
+  char *destfile;
+  FILE *src;
+  FILE *dest;
+
+  if (argc != 2)
+    {
+      fprintf(stderr, "Unexpected number of arguments\n");
+      show_usage(argv[0]);
+    }
+
+  srcfile = getfilepath(argv[1], "nuttx", "hex");
+  if (!srcfile)
+    {
+      fprintf(stderr, "getfilepath failed\n");
+      exit(2);
+    }
+
+  destfile = getfilepath(argv[1], "nuttx", "tmp");
+  if (!destfile)
+    {
+      fprintf(stderr, "getfilepath failed\n");
+      exit(2);
+    }
+
+  src = fopen(srcfile, "r");
+  if (!src)
+    {
+      fprintf(stderr, "open %s failed: %s\n", srcfile, strerror(errno));
+      exit(3);
+    }
+
+  dest = fopen(destfile, "w");
+  if (!dest)
+    {
+      fprintf(stderr, "open %s failed: %s\n", destfile, strerror(errno));
+      exit(3);
+    }
+
+  /* Read each line from the source file */
+
+  while (fgets(line, MAX_LINE, src) != NULL)
+    {
+      if (parse_line(&hexline))
+        {
+          fprintf(stderr, "Failed to parse line\n");
+          exit(1);
+        }
+
+      /* Adjust 'Extended Segment Address Records'. */
+
+      if (hexline.type == TYPE_EXTLIN)
+        {
+          adjust_extlin(&hexline);
+        }
+      fputs(line, dest);
+    }
+
+  fclose(src);
+  fclose(dest);
+
+  /* Remove the original nuttx.hex file */
+
+  if (remove(srcfile) != 0)
+    {
+      fprintf(stderr, "Failed to remove the old '%s'\n", srcfile);
+    
+    }
+
+  /* Rename the new nuttx.tmp file to nuttx.hex */
+
+  if (rename(destfile, srcfile) != 0)
+    {
+      fprintf(stderr, "Failed to rename '%s' to '%s'\n", destfile, srcfile);
+    }
+
+  return 0;
+}
diff --git a/nuttx/sched/prctl.c b/nuttx/sched/prctl.c
index c4ed373b9..bc55992b4 100644
--- a/nuttx/sched/prctl.c
+++ b/nuttx/sched/prctl.c
@@ -95,7 +95,7 @@ int prctl(int option, ...)
         FAR _TCB *tcb;
 
         /* Get the TCB associated with the PID (handling the special case of
-         * pid==0 meaning "this thread"
+         * pid==0 meaning "this thread")
          */
 
         if (!pid)
@@ -107,7 +107,7 @@ int prctl(int option, ...)
             tcb = sched_gettcb(pid);
           }
 
-        /* An invalid pid be indicated by a NULL TCB returned from
+        /* An invalid pid will be indicated by a NULL TCB returned from
          * sched_gettcb()
          */
 
@@ -118,6 +118,8 @@ int prctl(int option, ...)
             goto errout;
           }
 
+        /* A pointer to the task name storage must also be provided */
+
         if (!name)
           {
             sdbg("No name provide\n");
@@ -125,7 +127,7 @@ int prctl(int option, ...)
             goto errout;
           }
 
-        /* Now get or set the name */
+        /* Now get or set the task name */
 
         if (option == PR_SET_NAME)
           {