Add support for Code Red

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3487 42af7a65-404d-4744-a932-0658087f49c3

8 files changed, 1006 insertions, 911 deletions

diff --git a/nuttx/configs/lpcxpresso-lpc1768/README.txt b/nuttx/configs/lpcxpresso-lpc1768/README.txt
index c685d64c1..503f14ab3 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/README.txt
+++ b/nuttx/configs/lpcxpresso-lpc1768/README.txt
@@ -1,490 +1,520 @@
-README

-^^^^^^

-

-README for NuttX port to the Embedded Artists' LPCXpresso base board with

-the LPCXpresso daughter board.

-

-Contents

-^^^^^^^^

-

-  LCPXpresso LPC1768 Board

-  Development Environment

-  GNU Toolchain Options

-  NuttX buildroot Toolchain

-  Code Red IDE

-  LEDs

-  LPCXpresso Configuration Options

-  Configurations

-

-LCPXpresso LPC1768 Board

-^^^^^^^^^^^^^^^^^^^^^^^^

-

-  Pin Description                  Connector On Board       Base Board

-  -------------------------------- --------- -------------- ---------------------

-

-  P0[0]/RD1/TXD3/SDA1               J6-9     I2C E2PROM SDA TXD3/SDA1

-  P0[1]/TD1/RXD3/SCL                J6-10                   RXD2/SCL1

-  P0[2]/TXD0/AD0[7]                 J6-21    

-  P0[3]/RXD0/AD0[6]                 J6-22    

-  P0[4]/I2SRX-CLK/RD2/CAP2.0        J6-38                   CAN_RX2

-  P0[5]/I2SRX-WS/TD2/CAP2.1         J6-39                   CAN_TX2

-  P0[6]/I2SRX_SDA/SSEL1/MAT2[0]     J6-8                    SSEL1

-  P0[7]/I2STX_CLK/SCK1/MAT2[1]      J6-7                    SCK1

-  P0[8]/I2STX_WS/MISO1/MAT2[2]      J6-6                    MISO1

-  P0[9]/I2STX_SDA/MOSI1/MAT2[3]     J6-5                    MOSI1

-  P0[10]                            J6-40                   TXD2/SDA2

-  P0[11]                            J6-41                   RXD2/SCL2

-  P0[15]/TXD1/SCK0/SCK              J6-13                   TXD1/SCK0

-  P0[16]/RXD1/SSEL0/SSEL            J6-14                   RXD1/SSEL0

-  P0[17]/CTS1/MISO0/MISO            J6-12                   MISO0

-  P0[18]/DCD1/MOSI0/MOSI            J6-11                   MOSI0

-  P0[19]/DSR1/SDA1                  PAD17                   N/A

-  P0[20]/DTR1/SCL1                  PAD18    I2C E2PROM SCL N/A

-  P0[21]/RI1/MCIPWR/RD1             J6-23                  

-  P0[22]/RTS1/TD1                   J6-24    LED            

-  P0[23]/AD0[0]/I2SRX_CLK/CAP3[0]   J6-15                   AD0.0

-  P0[24]/AD0[1]/I2SRX_WS/CAP3[1]    J6-16                   AD0.1

-  P0[25]/AD0[2]/I2SRX_SDA/TXD3      J6-17                   AD0.2

-  P0[26]/AD0[3]/AOUT/RXD3           J6-18                   AD0.3/AOUT

-  P0[27]/SDA0/USB_SDA               J6-25                   

-  P0[28]/SCL0                       J6-26                   

-  P0[29]/USB_D+                     J6-37                   USB_D+

-  P0[30]/USB_D-                     J6-36                   USB_D-

-

-  P1[0]/ENET-TXD0                   J6-34?  TXD0            TX-(Ethernet PHY)

-  P1[1]/ENET_TXD1                   J6-35?  TXD1            TX+(Ethernet PHY)

-  P1[4]/ENET_TX_EN                          TXEN            N/A

-  P1[8]/ENET_CRS                            CRS_DV/MODE2    N/A

-  P1[9]/ENET_RXD0                   J6-32?  RXD0/MODE0      RD-(Ethernet PHY)

-  P1[10]/ENET_RXD1                  J6-33?  RXD1/MODE1      RD+(Ethernet PHY)

-  P1[14]/ENET_RX_ER                         RXER/PHYAD0     N/A

-  P1[15]/ENET_REF_CLK                       REFCLK          N/A

-  P1[16]/ENET_MDC                           MDC             N/A

-  P1[17]/ENET_MDIO                          MDIO            N/A

-  P1[18]/USB_UP_LED/PWM1[1]/CAP1[0] PAD1                    N/A

-  P1[19]/MC0A/USB_PPWR/N_CAP1.1     PAD2                    N/A

-  P1[20]/MCFB0/PWM1.2/SCK0          PAD3                    N/A

-  P1[21]/MCABORT/PWM1.3/SSEL0       PAD4                    N/A

-  P1[22]/MC0B/USB-PWRD/MAT1.0       PAD5                    N/A

-  P1[23]/MCFB1/PWM1.4/MISO0         PAD6                    N/A

-  P1[24]/MCFB2/PWM1.5/MOSI0         PAD7                    N/A

-  P1[25]/MC1A/MAT1.1                PAD8                    N/A

-  P1[26]/MC1B/PWM1.6/CAP0.0         PAD9                    N/A

-  P1[27]/CLKOUT/USB-OVRCR-N/CAP0.1  PAD10                   N/A

-  P1[28]/MC2A/PCAP1.0/MAT0.0        PAD11                   N/A

-  P1[29]/MC2B/PCAP1.1/MAT0.1        PAD12                   N/A

-  P1[30]/VBUS/AD0[4]                J6-19                   AD0.4

-  P1[31]/SCK1/AD0[5]                J6-20                   AD0.5

-

-  P2[0]/PWM1.1/TXD1                 J6-42                   PWM1.1

-  P2[1]/PWM1.2/RXD1                 J6-43                   PWM1.2

-  P2[2]/PWM1.3/CTS1/TRACEDATA[3]    J6-44                   PWM1.3

-  P2[3]/PWM1.4/DCD1/TRACEDATA[2]    J6-45                   PWM1.4

-  P2[4]/PWM1.5/DSR1/TRACEDATA[1]    J6-46                   PWM1.5

-  P2[5]/PWM1[6]/DTR1/TRACEDATA[0]   J6-47                   PWM1.6

-  P2[6]/PCAP1[0]/RI1/TRACECLK       J6-48    

-  P2[7]/RD2/RTS1                    J6-49    

-  P2[8]/TD2/TXD2                    J6-50    

-  P2[9]/USB_CONNECT/RXD2            PAD19   USB Pullup      N/A

-  P2[10]/EINT0/NMI                  J6-51    

-  P2[11]/EINT1/I2STX_CLK            J6-52    

-  P2[12]/EINT2/I2STX_WS             j6-53    

-  P2[13]/EINT3/I2STX_SDA            J6-27                 

-

-  P3[25]/MAT0.0/PWM1.2              PAD13                   N/A

-  P3[26]/STCLK/MAT0.1/PWM1.3        PAD14                   N/A

-

-  P4[28]/RX-MCLK/MAT2.0/TXD3        PAD15                   N/A

-  P4[29]/TX-MCLK/MAT2.1/RXD3        PAD16                   N/A

-

-Development Environment

-^^^^^^^^^^^^^^^^^^^^^^^

-

-  Either Linux or Cygwin on Windows can be used for the development environment.

-  The source has been built only using the GNU toolchain (see below).  Other

-  toolchains will likely cause problems. Testing was performed using the Cygwin

-  environment.

-

-GNU Toolchain Options

-^^^^^^^^^^^^^^^^^^^^^

-

-  The NuttX make system has been modified to support the following different

-  toolchain options.

-

-  1. The CodeSourcery GNU toolchain,

-  2. The devkitARM GNU toolchain,

-  3. The NuttX buildroot Toolchain (see below).

-

-  All testing has been conducted using the NuttX buildroot toolchain.  However,

-  the make system is setup to default to use the devkitARM toolchain.  To use

-  the CodeSourcery or devkitARM toolchain, you simply need add one of the

-  following configuration options to your .config (or defconfig) file:

-

-    CONFIG_LPC17_CODESOURCERYW=y   : CodeSourcery under Windows

-    CONFIG_LPC17_CODESOURCERYL=y   : CodeSourcery under Linux

-    CONFIG_LPC17_DEVKITARM=y       : devkitARM under Windows

-    CONFIG_LPC17_BUILDROOT=y       : NuttX buildroot under Linux or Cygwin (default)

-

-  If you are not using CONFIG_LPC17_BUILDROOT, then you may also have to modify

-  the PATH in the setenv.h file if your make cannot find the tools.

-

-  NOTE: the CodeSourcery (for Windows)and devkitARM are Windows native toolchains.

-  The CodeSourcey (for Linux) and NuttX buildroot toolchains are Cygwin and/or

-  Linux native toolchains. There are several limitations to using a Windows based

-  toolchain in a Cygwin environment.  The three biggest are:

-

-  1. The Windows toolchain cannot follow Cygwin paths.  Path conversions are

-     performed automatically in the Cygwin makefiles using the 'cygpath' utility

-     but you might easily find some new path problems.  If so, check out 'cygpath -w'

-

-  2. Windows toolchains cannot follow Cygwin symbolic links.  Many symbolic links

-     are used in Nuttx (e.g., include/arch).  The make system works around these

-     problems for the Windows tools by copying directories instead of linking them.

-     But this can also cause some confusion for you:  For example, you may edit

-     a file in a "linked" directory and find that your changes had not effect.

-     That is because you are building the copy of the file in the "fake" symbolic

-     directory.  If you use a Windows toolchain, you should get in the habit of

-     making like this:

-

-       make clean_context all

-

-     An alias in your .bashrc file might make that less painful.

-

-  3. Dependencies are not made when using Windows versions of the GCC.  This is

-     because the dependencies are generated using Windows pathes which do not

-     work with the Cygwin make.

-

-     Support has been added for making dependencies with the windows-native toolchains.

-     That support can be enabled by modifying your Make.defs file as follows:

-

-    -  MKDEP                = $(TOPDIR)/tools/mknulldeps.sh

-    +  MKDEP                = $(TOPDIR)/tools/mkdeps.sh --winpaths "$(TOPDIR)"

-

-     If you have problems with the dependency build (for example, if you are not

-     building on C:), then you may need to modify tools/mkdeps.sh

-

-  NOTE 1: The CodeSourcery toolchain (2009q1) does not work with default optimization

-  level of -Os (See Make.defs).  It will work with -O0, -O1, or -O2, but not with

-  -Os.

-

-  NOTE 2: The devkitARM toolchain includes a version of MSYS make.  Make sure that

-  the paths to Cygwin's /bin and /usr/bin directories appear BEFORE the devkitARM

-  path or will get the wrong version of make.

-

-Code Red IDE

-^^^^^^^^^^^^

-

-  NuttX is built using command-line make.  It can be used with an IDE, but some

-  effort will be required to create the project (There is a simple RIDE project

-  in the RIDE subdirectory).

-  

-  Makefile Build

-  --------------

-  Under Eclipse, it is pretty easy to set up an "empty makefile project" and

-  simply use the NuttX makefile to build the system.  That is almost for free

-  under Linux.  Under Windows, you will need to set up the "Cygwin GCC" empty

-  makefile project in order to work with Windows (Google for "Eclipse Cygwin" -

-  there is a lot of help on the internet).

-

-  Native Build

-  ------------

-  Here are a few tips before you start that effort:

-

-  1) Select the toolchain that you will be using in your .config file

-  2) Start the NuttX build at least one time from the Cygwin command line

-     before trying to create your project.  This is necessary to create

-     certain auto-generated files and directories that will be needed.

-  3) Set up include pathes:  You will need include/, arch/arm/src/lpc17xx,

-     arch/arm/src/common, arch/arm/src/cortexm3, and sched/.

-  4) All assembly files need to have the definition option -D __ASSEMBLY__

-     on the command line.

-

-  Startup files will probably cause you some headaches.  The NuttX startup file

-  is arch/arm/src/lpc17x/lpc17_vectors.S.

-

-NuttX buildroot Toolchain

-^^^^^^^^^^^^^^^^^^^^^^^^^

-

-  A GNU GCC-based toolchain is assumed.  The files */setenv.sh should

-  be modified to point to the correct path to the Cortex-M3 GCC toolchain (if

-  different from the default in your PATH variable).

-

-  If you have no Cortex-M3 toolchain, one can be downloaded from the NuttX

-  SourceForge download site (https://sourceforge.net/project/showfiles.php?group_id=189573).

-  This GNU toolchain builds and executes in the Linux or Cygwin environment.

-

-  1. You must have already configured Nuttx in <some-dir>/nuttx.

-

-     cd tools

-     ./configure.sh lpcxpresso-lpc1768/<sub-dir>

-

-  2. Download the latest buildroot package into <some-dir>

-

-  3. unpack the buildroot tarball.  The resulting directory may

-     have versioning information on it like buildroot-x.y.z.  If so,

-     rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.

-

-  4. cd <some-dir>/buildroot

-

-  5. cp configs/cortexm3-defconfig-4.3.3 .config

-

-  6. make oldconfig

-

-  7. make

-

-  8. Edit setenv.h, if necessary, so that the PATH variable includes

-     the path to the newly built binaries.

-

-  See the file configs/README.txt in the buildroot source tree.  That has more

-  detailed PLUS some special instructions that you will need to follow if you

-  are building a Cortex-M3 toolchain for Cygwin under Windows.

-

-  NOTE: This is an OABI toolchain.

-

-LEDs

-^^^^

-

-  If CONFIG_ARCH_LEDS is defined, then support for the LPCXpresso LEDs will be

-  included in the build.  See:

-

-  - configs/lpcxpresso-lpc1768/include/board.h - Defines LED constants, types and

-    prototypes the LED interface functions.

-

-  - configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h - GPIO settings for the LEDs.

-

-  - configs/lpcxpresso-lpc1768/src/up_leds.c - LED control logic.

-

-  The LPCXpresso has 3 LEDs... two on the Babel CAN board and a "heartbeat" LED."

-  The LEDs on the Babel CAN board are capabl of OFF/GREEN/RED/AMBER status.

-  In normal usage, the two LEDs on the Babel CAN board would show CAN status, but if

-  CONFIG_ARCH_LEDS is defined, these LEDs will be controlled as follows for NuttX

-  debug functionality (where NC means "No Change").

-

-  During the boot phases.  LED1 and LED2 will show boot status.

-

-                                          /* LED1   LED2   HEARTBEAT */

-    #define LED_STARTED                0  /* OFF    OFF    OFF */

-    #define LED_HEAPALLOCATE           1  /* GREEN  OFF    OFF */

-    #define LED_IRQSENABLED            2  /* OFF    GREEN  OFF */

-    #define LED_STACKCREATED           3  /* OFF    OFF    OFF */

-

-    #define LED_INIRQ                  4  /*  NC     NC    ON  (momentary) */

-    #define LED_SIGNAL                 5  /*  NC     NC    ON  (momentary) */

-    #define LED_ASSERTION              6  /*  NC     NC    ON  (momentary) */

-    #define LED_PANIC                  7  /*  NC     NC    ON  (0.5Hz flashing) */

-    #undef  LED_IDLE                      /* Sleep mode indication not supported */

-

-  After the system is booted, this logic will no longer use LEDs 1 and 2.  They

-  are then available for use the application software using lpc17_led1() and

-  lpc17_led2():

-

-    enum lpc17_ledstate_e

-    {

-      LPC17_LEDSTATE_OFF   = 0,

-      LPC17_LEDSTATE_GREEN = 1,

-      LPC17_LEDSTATE_RED   = 2,

-      LPC17_LEDSTATE_AMBER = (LPC17_LEDSTATE_GREEN|LPC17_LEDSTATE_RED),

-    };

-

-    EXTERN void lpc17_led1(enum lpc17_ledstate_e state);

-    EXTERN void lpc17_led2(enum lpc17_ledstate_e state);

-

-  The heartbeat LED is illuminated during all interrupt and signal procressing.

-  Normally, it will glow dimly to inicate that the LPC17xx is taking interrupts.

-  On an assertion PANIC, it will flash at 1Hz.

-

-LPCXpresso Configuration Options

-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

-

-	CONFIG_ARCH - Identifies the arch/ subdirectory.  This should

-	   be set to:

-

-	   CONFIG_ARCH=arm

-

-	CONFIG_ARCH_family - For use in C code:

-

-	   CONFIG_ARCH_ARM=y

-

-	CONFIG_ARCH_architecture - For use in C code:

-

-	   CONFIG_ARCH_CORTEXM3=y

-

-	CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory

-

-	   CONFIG_ARCH_CHIP=lpc17xx

-

-	CONFIG_ARCH_CHIP_name - For use in C code to identify the exact

-	   chip:

-

-	   CONFIG_ARCH_CHIP_LPC1768=y

-

-	CONFIG_ARCH_BOARD - Identifies the configs subdirectory and

-	   hence, the board that supports the particular chip or SoC.

-

-	   CONFIG_ARCH_BOARD=lpcxpresso-lpc1768

-

-	CONFIG_ARCH_BOARD_name - For use in C code

-

-	   CONFIG_ARCH_BOARD_LPCEXPRESSO=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 LPC17xx supports interrupt prioritization

-

-	   CONFIG_ARCH_IRQPRIO=y

-

-	CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that

-	   have LEDs

-

-	CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt

-	   stack. If defined, this symbol is the size of the interrupt

-	    stack in bytes.  If not defined, the user task stacks will be

-	  used during interrupt handling.

-

-	CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions

-

-	CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.

-

-	CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that

-	   cause a 100 second delay during boot-up.  This 100 second delay

-	   serves no purpose other than it allows you to calibratre

-	   CONFIG_ARCH_LOOPSPERMSEC.  You simply use a stop watch to measure

-	   the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until

-	   the delay actually is 100 seconds.

-

-	Individual subsystems can be enabled:

-	  CONFIG_LPC17_MAINOSC=y

-	  CONFIG_LPC17_PLL0=y

-	  CONFIG_LPC17_PLL1=n

-	  CONFIG_LPC17_ETHERNET=n

-	  CONFIG_LPC17_USBHOST=n

-	  CONFIG_LPC17_USBOTG=n

-	  CONFIG_LPC17_USBDEV=n

-	  CONFIG_LPC17_UART0=y

-	  CONFIG_LPC17_UART1=n

-	  CONFIG_LPC17_UART2=n

-	  CONFIG_LPC17_UART3=n

-	  CONFIG_LPC17_CAN1=n

-	  CONFIG_LPC17_CAN2=n

-	  CONFIG_LPC17_SPI=n

-	  CONFIG_LPC17_SSP0=n

-	  CONFIG_LPC17_SSP1=n

-	  CONFIG_LPC17_I2C0=n

-	  CONFIG_LPC17_I2C1=n

-	  CONFIG_LPC17_I2S=n

-	  CONFIG_LPC17_TMR0=n

-	  CONFIG_LPC17_TMR1=n

-	  CONFIG_LPC17_TMR2=n

-	  CONFIG_LPC17_TMR3=n

-	  CONFIG_LPC17_RIT=n

-	  CONFIG_LPC17_PWM=n

-	  CONFIG_LPC17_MCPWM=n

-	  CONFIG_LPC17_QEI=n

-	  CONFIG_LPC17_RTC=n

-	  CONFIG_LPC17_WDT=n

-	  CONFIG_LPC17_ADC=n

-	  CONFIG_LPC17_DAC=n

-	  CONFIG_LPC17_GPDMA=n

-	  CONFIG_LPC17_FLASH=n

-

-  LPC17xx 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

-

-  LPC17xx specific PHY/Ethernet device driver settings.  These setting

-  also require CONFIG_NET and CONFIG_LPC17_ETHERNET.

-

-	CONFIG_PHY_KS8721 - Selects Micrel KS8721 PHY

-	CONFIG_PHY_AUTONEG - Enable auto-negotion

-	CONFIG_PHY_SPEED100 - Select 100Mbit vs. 10Mbit speed.

-	CONFIG_PHY_FDUPLEX - Select full (vs. half) duplex

-

-    CONFIG_NET_EMACRAM_SIZE - Size of EMAC RAM.  Default: 16Kb

-	CONFIG_NET_NTXDESC - Configured number of Tx descriptors. Default: 18

-	CONFIG_NET_NRXDESC - Configured number of Rx descriptors. Default: 18

-	CONFIG_NET_PRIORITY - Ethernet interrupt priority.  The is default is

-	  the higest priority.

-	CONFIG_NET_WOL - Enable Wake-up on Lan (not fully implemented).

-	CONFIG_NET_REGDEBUG - Enabled low level register debug.  Also needs

-	  CONFIG_DEBUG.

-	CONFIG_NET_DUMPPACKET - Dump all received and transmitted packets.

-	  Also needs CONFIG_DEBUG.

-	CONFIG_NET_HASH - Enable receipt of near-perfect match frames.

-	CONFIG_NET_MULTICAST - Enable receipt of multicast (and unicast) frames.

-      Automatically set if CONFIG_NET_IGMP is selected.

-

-  LPC17xx USB Device Configuration

-

-	CONFIG_LPC17_USBDEV_FRAME_INTERRUPT

-	  Handle USB Start-Of-Frame events. 

-	  Enable reading SOF from interrupt handler vs. simply reading on demand.

-	  Probably a bad idea... Unless there is some issue with sampling the SOF

-	  from hardware asynchronously.

-	CONFIG_LPC17_USBDEV_EPFAST_INTERRUPT

-	  Enable high priority interrupts.  I have no idea why you might want to

-	  do that

-	CONFIG_LPC17_USBDEV_NDMADESCRIPTORS

-	  Number of DMA descriptors to allocate in SRAM.

-	CONFIG_LPC17_USBDEV_DMA

-	  Enable lpc17xx-specific DMA support

-

-  LPC17xx USB Host Configuration (the LPCXpresso does not support USB Host)

-

-    CONFIG_USBHOST_OHCIRAM_SIZE

-      Total size of OHCI RAM (in AHB SRAM Bank 1)

-    CONFIG_USBHOST_NEDS

-      Number of endpoint descriptors

-    CONFIG_USBHOST_NTDS

-      Number of transfer descriptors

-    CONFIG_USBHOST_TDBUFFERS

-      Number of transfer descriptor buffers

-    CONFIG_USBHOST_TDBUFSIZE

-      Size of one transfer descriptor buffer

-    CONFIG_USBHOST_IOBUFSIZE

-      Size of one end-user I/O buffer.  This can be zero if the

-      application can guarantee that all end-user I/O buffers

-      reside in AHB SRAM.

-

-Configurations

-^^^^^^^^^^^^^^

-

-Each LPCXpresso configuration is maintained in a sudirectory and can be

-selected as follow:

-

-	cd tools

-	./configure.sh lpcxpresso-lpc1768/<subdir>

-	cd -

-	. ./setenv.sh

-

-Where <subdir> is one of the following:

-

-  ostest:

-    This configuration directory, performs a simple OS test using

-    examples/ostest.

+README
+^^^^^^
+
+README for NuttX port to the Embedded Artists' LPCXpresso base board with
+the LPCXpresso daughter board.
+
+Contents
+^^^^^^^^
+
+  LCPXpresso LPC1768 Board
+  Development Environment
+  GNU Toolchain Options
+  NuttX buildroot Toolchain
+  Code Red IDE
+  LEDs
+  LPCXpresso Configuration Options
+  Configurations
+
+LCPXpresso LPC1768 Board
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+  Pin Description                  Connector On Board       Base Board
+  -------------------------------- --------- -------------- ---------------------
+
+  P0[0]/RD1/TXD3/SDA1               J6-9     I2C E2PROM SDA TXD3/SDA1
+  P0[1]/TD1/RXD3/SCL                J6-10                   RXD2/SCL1
+  P0[2]/TXD0/AD0[7]                 J6-21    
+  P0[3]/RXD0/AD0[6]                 J6-22    
+  P0[4]/I2SRX-CLK/RD2/CAP2.0        J6-38                   CAN_RX2
+  P0[5]/I2SRX-WS/TD2/CAP2.1         J6-39                   CAN_TX2
+  P0[6]/I2SRX_SDA/SSEL1/MAT2[0]     J6-8                    SSEL1
+  P0[7]/I2STX_CLK/SCK1/MAT2[1]      J6-7                    SCK1
+  P0[8]/I2STX_WS/MISO1/MAT2[2]      J6-6                    MISO1
+  P0[9]/I2STX_SDA/MOSI1/MAT2[3]     J6-5                    MOSI1
+  P0[10]                            J6-40                   TXD2/SDA2
+  P0[11]                            J6-41                   RXD2/SCL2
+  P0[15]/TXD1/SCK0/SCK              J6-13                   TXD1/SCK0
+  P0[16]/RXD1/SSEL0/SSEL            J6-14                   RXD1/SSEL0
+  P0[17]/CTS1/MISO0/MISO            J6-12                   MISO0
+  P0[18]/DCD1/MOSI0/MOSI            J6-11                   MOSI0
+  P0[19]/DSR1/SDA1                  PAD17                   N/A
+  P0[20]/DTR1/SCL1                  PAD18    I2C E2PROM SCL N/A
+  P0[21]/RI1/MCIPWR/RD1             J6-23                  
+  P0[22]/RTS1/TD1                   J6-24    LED            
+  P0[23]/AD0[0]/I2SRX_CLK/CAP3[0]   J6-15                   AD0.0
+  P0[24]/AD0[1]/I2SRX_WS/CAP3[1]    J6-16                   AD0.1
+  P0[25]/AD0[2]/I2SRX_SDA/TXD3      J6-17                   AD0.2
+  P0[26]/AD0[3]/AOUT/RXD3           J6-18                   AD0.3/AOUT
+  P0[27]/SDA0/USB_SDA               J6-25                   
+  P0[28]/SCL0                       J6-26                   
+  P0[29]/USB_D+                     J6-37                   USB_D+
+  P0[30]/USB_D-                     J6-36                   USB_D-
+
+  P1[0]/ENET-TXD0                   J6-34?  TXD0            TX-(Ethernet PHY)
+  P1[1]/ENET_TXD1                   J6-35?  TXD1            TX+(Ethernet PHY)
+  P1[4]/ENET_TX_EN                          TXEN            N/A
+  P1[8]/ENET_CRS                            CRS_DV/MODE2    N/A
+  P1[9]/ENET_RXD0                   J6-32?  RXD0/MODE0      RD-(Ethernet PHY)
+  P1[10]/ENET_RXD1                  J6-33?  RXD1/MODE1      RD+(Ethernet PHY)
+  P1[14]/ENET_RX_ER                         RXER/PHYAD0     N/A
+  P1[15]/ENET_REF_CLK                       REFCLK          N/A
+  P1[16]/ENET_MDC                           MDC             N/A
+  P1[17]/ENET_MDIO                          MDIO            N/A
+  P1[18]/USB_UP_LED/PWM1[1]/CAP1[0] PAD1                    N/A
+  P1[19]/MC0A/USB_PPWR/N_CAP1.1     PAD2                    N/A
+  P1[20]/MCFB0/PWM1.2/SCK0          PAD3                    N/A
+  P1[21]/MCABORT/PWM1.3/SSEL0       PAD4                    N/A
+  P1[22]/MC0B/USB-PWRD/MAT1.0       PAD5                    N/A
+  P1[23]/MCFB1/PWM1.4/MISO0         PAD6                    N/A
+  P1[24]/MCFB2/PWM1.5/MOSI0         PAD7                    N/A
+  P1[25]/MC1A/MAT1.1                PAD8                    N/A
+  P1[26]/MC1B/PWM1.6/CAP0.0         PAD9                    N/A
+  P1[27]/CLKOUT/USB-OVRCR-N/CAP0.1  PAD10                   N/A
+  P1[28]/MC2A/PCAP1.0/MAT0.0        PAD11                   N/A
+  P1[29]/MC2B/PCAP1.1/MAT0.1        PAD12                   N/A
+  P1[30]/VBUS/AD0[4]                J6-19                   AD0.4
+  P1[31]/SCK1/AD0[5]                J6-20                   AD0.5
+
+  P2[0]/PWM1.1/TXD1                 J6-42                   PWM1.1
+  P2[1]/PWM1.2/RXD1                 J6-43                   PWM1.2
+  P2[2]/PWM1.3/CTS1/TRACEDATA[3]    J6-44                   PWM1.3
+  P2[3]/PWM1.4/DCD1/TRACEDATA[2]    J6-45                   PWM1.4
+  P2[4]/PWM1.5/DSR1/TRACEDATA[1]    J6-46                   PWM1.5
+  P2[5]/PWM1[6]/DTR1/TRACEDATA[0]   J6-47                   PWM1.6
+  P2[6]/PCAP1[0]/RI1/TRACECLK       J6-48    
+  P2[7]/RD2/RTS1                    J6-49    
+  P2[8]/TD2/TXD2                    J6-50    
+  P2[9]/USB_CONNECT/RXD2            PAD19   USB Pullup      N/A
+  P2[10]/EINT0/NMI                  J6-51    
+  P2[11]/EINT1/I2STX_CLK            J6-52    
+  P2[12]/EINT2/I2STX_WS             j6-53    
+  P2[13]/EINT3/I2STX_SDA            J6-27                 
+
+  P3[25]/MAT0.0/PWM1.2              PAD13                   N/A
+  P3[26]/STCLK/MAT0.1/PWM1.3        PAD14                   N/A
+
+  P4[28]/RX-MCLK/MAT2.0/TXD3        PAD15                   N/A
+  P4[29]/TX-MCLK/MAT2.1/RXD3        PAD16                   N/A
+
+Development Environment
+^^^^^^^^^^^^^^^^^^^^^^^
+
+  Either Linux or Cygwin on Windows can be used for the development environment.
+  The source has been built only using the GNU toolchain (see below).  Other
+  toolchains will likely cause problems. Testing was performed using the Cygwin
+  environment.
+
+GNU Toolchain Options
+^^^^^^^^^^^^^^^^^^^^^
+
+  The NuttX make system has been modified to support the following different
+  toolchain options.
+
+  1. The CodeSourcery GNU toolchain,
+  2. The devkitARM GNU toolchain,
+  3. The NuttX buildroot Toolchain (see below).
+  4. LPCXpresso Code Red IDE.
+
+  All testing has been conducted using the NuttX buildroot toolchain.  However,
+  the make system is setup to default to use the Code Red toolchain.  To use
+  the CodeSourcery, devkitARM, or buildoor toolchain, you simply need add one
+  of the following configuration options to your .config (or defconfig) file:
+
+    CONFIG_LPC17_CODESOURCERYW=y   : CodeSourcery under Windows
+    CONFIG_LPC17_CODESOURCERYL=y   : CodeSourcery under Linux
+    CONFIG_LPC17_DEVKITARM=y       : devkitARM under Windows
+    CONFIG_LPC17_BUILDROOT=y       : NuttX buildroot under Linux or Cygwin (default)
+    CONFIG_LPC17_CODEREDW=y        : Code Red under Windows
+    CONFIG_LPC17_CODEREDL=y        : Code Red under Linux
+
+  If you are not using CONFIG_LPC17_CODEREDL, then you may also have to modify
+  the PATH in the setenv.h file if your make cannot find the tools.
+
+  NOTE: the CodeSourcery (for Windows), devkitARM, and Code Red (for Windows) are
+  Windows native toolchains. The CodeSourcey (for Linux), NuttX buildroot and
+  Code Red (for Linux) toolchains are Linux native toolchains (The buildroot may
+  also be built as a Cygwin native toolchain which behaves the same as a Linux
+  native toolchain in that environement).  There are several limitations to using
+  a Windows based toolchain in a Cygwin environment.  The three biggest are:
+
+  1. The Windows toolchain cannot follow Cygwin paths.  Path conversions are
+     performed automatically in the Cygwin makefiles using the 'cygpath' utility
+     but you might easily find some new path problems.  If so, check out 'cygpath -w'
+
+  2. Windows toolchains cannot follow Cygwin symbolic links.  Many symbolic links
+     are used in Nuttx (e.g., include/arch).  The make system works around these
+     problems for the Windows tools by copying directories instead of linking them.
+     But this can also cause some confusion for you:  For example, you may edit
+     a file in a "linked" directory and find that your changes had not effect.
+     That is because you are building the copy of the file in the "fake" symbolic
+     directory.  If you use a Windows toolchain, you should get in the habit of
+     making like this:
+
+       make clean_context all
+
+     An alias in your .bashrc file might make that less painful.
+
+  3. Dependencies are not made when using Windows versions of the GCC.  This is
+     because the dependencies are generated using Windows pathes which do not
+     work with the Cygwin make.
+
+     Support has been added for making dependencies with the windows-native toolchains.
+     That support can be enabled by modifying your Make.defs file as follows:
+
+    -  MKDEP                = $(TOPDIR)/tools/mknulldeps.sh
+    +  MKDEP                = $(TOPDIR)/tools/mkdeps.sh --winpaths "$(TOPDIR)"
+
+     If you have problems with the dependency build (for example, if you are not
+     building on C:), then you may need to modify tools/mkdeps.sh
+
+  NOTE 1: The CodeSourcery toolchain (2009q1) does not work with default optimization
+  level of -Os (See Make.defs).  It will work with -O0, -O1, or -O2, but not with
+  -Os.
+
+  NOTE 2: The devkitARM toolchain includes a version of MSYS make.  Make sure that
+  the paths to Cygwin's /bin and /usr/bin directories appear BEFORE the devkitARM
+  path or will get the wrong version of make.
+
+Code Red IDE
+^^^^^^^^^^^^
+
+  NuttX is built using command-line make.  It can be used with an IDE, but some
+  effort will be required to create the project (There is a simple RIDE project
+  in the RIDE subdirectory).
+
+  Code Red IDE
+  ------------
+
+  Code Red is a Eclipse-based that is highly tuned from the LPCxxx MCUs.  You
+  can download Code Red free at http://lpcxpresso.code-red-tech.com (registration
+  required).
+
+  Execute-Only Build
+  ------------------
+
+  You should be able configure Eclipse to simply load the NuttX executable built
+  outside of Code Red: Files->import->C/C++->C/C++ Executable.
+  
+  Makefile Build
+  --------------
+
+  Under Eclipse, it is pretty easy to set up an "empty makefile project" and
+  simply use the NuttX makefile to build the system.  That is almost for free
+  under Linux.  Under Windows, you will need to set up the "Cygwin GCC" empty
+  makefile project in order to work with Windows (Google for "Eclipse Cygwin" -
+  there is a lot of help on the internet).
+
+  Import makefile project: Files->import->C/C++ Project->
+  Hmmm.. I don't see the Makefile project in the Code Red menus???
+
+  Cygwin Makefile Build
+  ---------------------
+
+  I don't know how to do this
+
+  Native Build
+  ------------
+
+  I should be possible to build NuttX as a "normal" IDE project.  I do not
+  know of anyone who has been successful doing that and I would not recommend
+  trying.  But here are a few tips before you start such an effort:
+
+  1) Select the toolchain that you will be using in your .config file
+  2) Start the NuttX build at least one time from the Cygwin command line
+     before trying to create your project.  This is necessary to create
+     certain auto-generated files and directories that will be needed.
+  3) Set up include pathes:  You will need include/, arch/arm/src/lpc17xx,
+     arch/arm/src/common, arch/arm/src/cortexm3, and sched/.
+  4) All assembly files need to have the definition option -D __ASSEMBLY__
+     on the command line.
+
+  Startup files will probably cause you some headaches.  The NuttX startup file
+  is arch/arm/src/lpc17x/lpc17_vectors.S.
+
+NuttX buildroot Toolchain
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+  A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
+  be modified to point to the correct path to the Cortex-M3 GCC toolchain (if
+  different from the default in your PATH variable).
+
+  If you have no Cortex-M3 toolchain, one can be downloaded from the NuttX
+  SourceForge download site (https://sourceforge.net/project/showfiles.php?group_id=189573).
+  This GNU toolchain builds and executes in the Linux or Cygwin environment.
+
+  1. You must have already configured Nuttx in <some-dir>/nuttx.
+
+     cd tools
+     ./configure.sh lpcxpresso-lpc1768/<sub-dir>
+
+  2. Download the latest buildroot package into <some-dir>
+
+  3. unpack the buildroot tarball.  The resulting directory may
+     have versioning information on it like buildroot-x.y.z.  If so,
+     rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.
+
+  4. cd <some-dir>/buildroot
+
+  5. cp configs/cortexm3-defconfig-4.3.3 .config
+
+  6. make oldconfig
+
+  7. make
+
+  8. Edit setenv.h, if necessary, so that the PATH variable includes
+     the path to the newly built binaries.
+
+  See the file configs/README.txt in the buildroot source tree.  That has more
+  detailed PLUS some special instructions that you will need to follow if you
+  are building a Cortex-M3 toolchain for Cygwin under Windows.
+
+  NOTE: This is an OABI toolchain.
+
+LEDs
+^^^^
+
+  If CONFIG_ARCH_LEDS is defined, then support for the LPCXpresso LEDs will be
+  included in the build.  See:
+
+  - configs/lpcxpresso-lpc1768/include/board.h - Defines LED constants, types and
+    prototypes the LED interface functions.
+
+  - configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h - GPIO settings for the LEDs.
+
+  - configs/lpcxpresso-lpc1768/src/up_leds.c - LED control logic.
+
+  The LPCXpresso has 3 LEDs... two on the Babel CAN board and a "heartbeat" LED."
+  The LEDs on the Babel CAN board are capabl of OFF/GREEN/RED/AMBER status.
+  In normal usage, the two LEDs on the Babel CAN board would show CAN status, but if
+  CONFIG_ARCH_LEDS is defined, these LEDs will be controlled as follows for NuttX
+  debug functionality (where NC means "No Change").
+
+  During the boot phases.  LED1 and LED2 will show boot status.
+
+                                          /* LED1   LED2   HEARTBEAT */
+    #define LED_STARTED                0  /* OFF    OFF    OFF */
+    #define LED_HEAPALLOCATE           1  /* GREEN  OFF    OFF */
+    #define LED_IRQSENABLED            2  /* OFF    GREEN  OFF */
+    #define LED_STACKCREATED           3  /* OFF    OFF    OFF */
+
+    #define LED_INIRQ                  4  /*  NC     NC    ON  (momentary) */
+    #define LED_SIGNAL                 5  /*  NC     NC    ON  (momentary) */
+    #define LED_ASSERTION              6  /*  NC     NC    ON  (momentary) */
+    #define LED_PANIC                  7  /*  NC     NC    ON  (0.5Hz flashing) */
+    #undef  LED_IDLE                      /* Sleep mode indication not supported */
+
+  After the system is booted, this logic will no longer use LEDs 1 and 2.  They
+  are then available for use the application software using lpc17_led1() and
+  lpc17_led2():
+
+    enum lpc17_ledstate_e
+    {
+      LPC17_LEDSTATE_OFF   = 0,
+      LPC17_LEDSTATE_GREEN = 1,
+      LPC17_LEDSTATE_RED   = 2,
+      LPC17_LEDSTATE_AMBER = (LPC17_LEDSTATE_GREEN|LPC17_LEDSTATE_RED),
+    };
+
+    EXTERN void lpc17_led1(enum lpc17_ledstate_e state);
+    EXTERN void lpc17_led2(enum lpc17_ledstate_e state);
+
+  The heartbeat LED is illuminated during all interrupt and signal procressing.
+  Normally, it will glow dimly to inicate that the LPC17xx is taking interrupts.
+  On an assertion PANIC, it will flash at 1Hz.
+
+LPCXpresso Configuration Options
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+	CONFIG_ARCH - Identifies the arch/ subdirectory.  This should
+	   be set to:
+
+	   CONFIG_ARCH=arm
+
+	CONFIG_ARCH_family - For use in C code:
+
+	   CONFIG_ARCH_ARM=y
+
+	CONFIG_ARCH_architecture - For use in C code:
+
+	   CONFIG_ARCH_CORTEXM3=y
+
+	CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+
+	   CONFIG_ARCH_CHIP=lpc17xx
+
+	CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
+	   chip:
+
+	   CONFIG_ARCH_CHIP_LPC1768=y
+
+	CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
+	   hence, the board that supports the particular chip or SoC.
+
+	   CONFIG_ARCH_BOARD=lpcxpresso-lpc1768
+
+	CONFIG_ARCH_BOARD_name - For use in C code
+
+	   CONFIG_ARCH_BOARD_LPCEXPRESSO=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 LPC17xx supports interrupt prioritization
+
+	   CONFIG_ARCH_IRQPRIO=y
+
+	CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
+	   have LEDs
+
+	CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
+	   stack. If defined, this symbol is the size of the interrupt
+	    stack in bytes.  If not defined, the user task stacks will be
+	  used during interrupt handling.
+
+	CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
+
+	CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.
+
+	CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
+	   cause a 100 second delay during boot-up.  This 100 second delay
+	   serves no purpose other than it allows you to calibratre
+	   CONFIG_ARCH_LOOPSPERMSEC.  You simply use a stop watch to measure
+	   the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until
+	   the delay actually is 100 seconds.
+
+	Individual subsystems can be enabled:
+	  CONFIG_LPC17_MAINOSC=y
+	  CONFIG_LPC17_PLL0=y
+	  CONFIG_LPC17_PLL1=n
+	  CONFIG_LPC17_ETHERNET=n
+	  CONFIG_LPC17_USBHOST=n
+	  CONFIG_LPC17_USBOTG=n
+	  CONFIG_LPC17_USBDEV=n
+	  CONFIG_LPC17_UART0=y
+	  CONFIG_LPC17_UART1=n
+	  CONFIG_LPC17_UART2=n
+	  CONFIG_LPC17_UART3=n
+	  CONFIG_LPC17_CAN1=n
+	  CONFIG_LPC17_CAN2=n
+	  CONFIG_LPC17_SPI=n
+	  CONFIG_LPC17_SSP0=n
+	  CONFIG_LPC17_SSP1=n
+	  CONFIG_LPC17_I2C0=n
+	  CONFIG_LPC17_I2C1=n
+	  CONFIG_LPC17_I2S=n
+	  CONFIG_LPC17_TMR0=n
+	  CONFIG_LPC17_TMR1=n
+	  CONFIG_LPC17_TMR2=n
+	  CONFIG_LPC17_TMR3=n
+	  CONFIG_LPC17_RIT=n
+	  CONFIG_LPC17_PWM=n
+	  CONFIG_LPC17_MCPWM=n
+	  CONFIG_LPC17_QEI=n
+	  CONFIG_LPC17_RTC=n
+	  CONFIG_LPC17_WDT=n
+	  CONFIG_LPC17_ADC=n
+	  CONFIG_LPC17_DAC=n
+	  CONFIG_LPC17_GPDMA=n
+	  CONFIG_LPC17_FLASH=n
+
+  LPC17xx 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
+
+  LPC17xx specific PHY/Ethernet device driver settings.  These setting
+  also require CONFIG_NET and CONFIG_LPC17_ETHERNET.
+
+	CONFIG_PHY_KS8721 - Selects Micrel KS8721 PHY
+	CONFIG_PHY_AUTONEG - Enable auto-negotion
+	CONFIG_PHY_SPEED100 - Select 100Mbit vs. 10Mbit speed.
+	CONFIG_PHY_FDUPLEX - Select full (vs. half) duplex
+
+    CONFIG_NET_EMACRAM_SIZE - Size of EMAC RAM.  Default: 16Kb
+	CONFIG_NET_NTXDESC - Configured number of Tx descriptors. Default: 18
+	CONFIG_NET_NRXDESC - Configured number of Rx descriptors. Default: 18
+	CONFIG_NET_PRIORITY - Ethernet interrupt priority.  The is default is
+	  the higest priority.
+	CONFIG_NET_WOL - Enable Wake-up on Lan (not fully implemented).
+	CONFIG_NET_REGDEBUG - Enabled low level register debug.  Also needs
+	  CONFIG_DEBUG.
+	CONFIG_NET_DUMPPACKET - Dump all received and transmitted packets.
+	  Also needs CONFIG_DEBUG.
+	CONFIG_NET_HASH - Enable receipt of near-perfect match frames.
+	CONFIG_NET_MULTICAST - Enable receipt of multicast (and unicast) frames.
+      Automatically set if CONFIG_NET_IGMP is selected.
+
+  LPC17xx USB Device Configuration
+
+	CONFIG_LPC17_USBDEV_FRAME_INTERRUPT
+	  Handle USB Start-Of-Frame events. 
+	  Enable reading SOF from interrupt handler vs. simply reading on demand.
+	  Probably a bad idea... Unless there is some issue with sampling the SOF
+	  from hardware asynchronously.
+	CONFIG_LPC17_USBDEV_EPFAST_INTERRUPT
+	  Enable high priority interrupts.  I have no idea why you might want to
+	  do that
+	CONFIG_LPC17_USBDEV_NDMADESCRIPTORS
+	  Number of DMA descriptors to allocate in SRAM.
+	CONFIG_LPC17_USBDEV_DMA
+	  Enable lpc17xx-specific DMA support
+
+  LPC17xx USB Host Configuration (the LPCXpresso does not support USB Host)
+
+    CONFIG_USBHOST_OHCIRAM_SIZE
+      Total size of OHCI RAM (in AHB SRAM Bank 1)
+    CONFIG_USBHOST_NEDS
+      Number of endpoint descriptors
+    CONFIG_USBHOST_NTDS
+      Number of transfer descriptors
+    CONFIG_USBHOST_TDBUFFERS
+      Number of transfer descriptor buffers
+    CONFIG_USBHOST_TDBUFSIZE
+      Size of one transfer descriptor buffer
+    CONFIG_USBHOST_IOBUFSIZE
+      Size of one end-user I/O buffer.  This can be zero if the
+      application can guarantee that all end-user I/O buffers
+      reside in AHB SRAM.
+
+Configurations
+^^^^^^^^^^^^^^
+
+Each LPCXpresso configuration is maintained in a sudirectory and can be
+selected as follow:
+
+	cd tools
+	./configure.sh lpcxpresso-lpc1768/<subdir>
+	cd -
+	. ./setenv.sh
+
+Where <subdir> is one of the following:
+
+  ostest:
+    This configuration directory, performs a simple OS test using
+    examples/ostest.
diff --git a/nuttx/configs/lpcxpresso-lpc1768/ostest/Make.defs b/nuttx/configs/lpcxpresso-lpc1768/ostest/Make.defs
index d056780b1..3dca85be0 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/ostest/Make.defs
+++ b/nuttx/configs/lpcxpresso-lpc1768/ostest/Make.defs
@@ -61,6 +61,18 @@ ifeq ($(CONFIG_LPC17_BUILDROOT),y)
   ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
   MAXOPTIMIZATION = -Os
 endif
+ifeq ($(CONFIG_LPC17_CODEREDW),y)
+  # CodeSourcery under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_LPC17_CODEREDL),y)
+  # CodeSourcery under Linux
+  CROSSDEV = arm-none-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+  MAXOPTIMIZATION = -O2
+endif
 
 ifeq ($(WINTOOL),y)
   # Windows-native toolchains
diff --git a/nuttx/configs/lpcxpresso-lpc1768/ostest/defconfig b/nuttx/configs/lpcxpresso-lpc1768/ostest/defconfig
index c01a22e75..c73e6f856 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/ostest/defconfig
+++ b/nuttx/configs/lpcxpresso-lpc1768/ostest/defconfig
@@ -95,7 +95,9 @@ CONFIG_ARCH_DMA=n
 CONFIG_LPC17_CODESOURCERYW=n
 CONFIG_LPC17_CODESOURCERYL=n
 CONFIG_LPC17_DEVKITARM=n
-CONFIG_LPC17_BUILDROOT=y
+CONFIG_LPC17_BUILDROOT=n
+CONFIG_LPC17_CODEREDW=n

+CONFIG_LPC17_CODEREDL=y

 
 #
 #  Individual subsystems can be enabled:
diff --git a/nuttx/configs/lpcxpresso-lpc1768/ostest/setenv.sh b/nuttx/configs/lpcxpresso-lpc1768/ostest/setenv.sh
index 82fd353ee..c31fa87d3 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/ostest/setenv.sh
+++ b/nuttx/configs/lpcxpresso-lpc1768/ostest/setenv.sh
@@ -40,7 +40,17 @@ fi
 if [ -z "${PATH_ORIG}" ]; then export PATH_ORIG="${PATH}"; fi
 
 WD=`pwd`
-export BUILDROOT_BIN="${WD}/../buildroot/build_arm_nofpu/staging_dir/bin"
-export PATH="${BUILDROOT_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+# This is where the buildroot might reside on a Linux or Cygwin system
+# export TOOLCHAIN_BIN="${WD}/../buildroot/build_arm_nofpu/staging_dir/bin"
+
+# This is the default install location for Code Red on Linux
+export TOOLCHAIN_BIN="/usr/local/LPCXpresso/tools/bin"
+
+# This the Cygwin path to the LPCXpresso 3.6 install location under Windows
+#export TOOLCHAIN_BIN="/cygdrive/c/nxp/lpcxpresso_3.6/Tools/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
 
 echo "PATH : ${PATH}"
diff --git a/nuttx/configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h b/nuttx/configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h
index 74f098d87..2a3b8b61b 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h
+++ b/nuttx/configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h
@@ -1,164 +1,164 @@
-/************************************************************************************

- * configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h

- * arch/arm/src/board/lpcxpresso_internal.n

- *

- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.

- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- *

- * 1. Redistributions of source code must retain the above copyright

- *    notice, this list of conditions and the following disclaimer.

- * 2. Redistributions in binary form must reproduce the above copyright

- *    notice, this list of conditions and the following disclaimer in

- *    the documentation and/or other materials provided with the

- *    distribution.

- * 3. Neither the name NuttX nor the names of its contributors may be

- *    used to endorse or promote products derived from this software

- *    without specific prior written permission.

- *

- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

- * POSSIBILITY OF SUCH DAMAGE.

- *

- ************************************************************************************/

-

-#ifndef _CONFIGS_LPCXPRESSO_LPC1768_SRC_LPCXPRESSO_INTERNAL_H

-#define _CONFIGS_LPCXPRESSO_LPC1768_SRC_LPCXPRESSO_INTERNAL_H

-

-/************************************************************************************

- * Included Files

- ************************************************************************************/

-

-#include <nuttx/config.h>

-#include <nuttx/compiler.h>

-

-/************************************************************************************

- * Definitions

- ************************************************************************************/

-

-/* LPCXpresso LPC1768 board pin usage ***********************************************/

-/* Pin Description                  Connector On Board       Base Board

- * -------------------------------- --------- -------------- ---------------------

- * P0[0]/RD1/TXD3/SDA1               J6-9     I2C E2PROM SDA TXD3/SDA1

- * P0[1]/TD1/RXD3/SCL                J6-10                   RXD2/SCL1

- * P0[2]/TXD0/AD0[7]                 J6-21    

- * P0[3]/RXD0/AD0[6]                 J6-22    

- * P0[4]/I2SRX-CLK/RD2/CAP2.0        J6-38                   CAN_RX2

- * P0[5]/I2SRX-WS/TD2/CAP2.1         J6-39                   CAN_TX2

- * P0[6]/I2SRX_SDA/SSEL1/MAT2[0]     J6-8                    SSEL1

- * P0[7]/I2STX_CLK/SCK1/MAT2[1]      J6-7                    SCK1

- * P0[8]/I2STX_WS/MISO1/MAT2[2]      J6-6                    MISO1

- * P0[9]/I2STX_SDA/MOSI1/MAT2[3]     J6-5                    MOSI1

- * P0[10]                            J6-40                   TXD2/SDA2

- * P0[11]                            J6-41                   RXD2/SCL2

- * P0[15]/TXD1/SCK0/SCK              J6-13                   TXD1/SCK0

- * P0[16]/RXD1/SSEL0/SSEL            J6-14                   RXD1/SSEL0

- * P0[17]/CTS1/MISO0/MISO            J6-12                   MISO0

- * P0[18]/DCD1/MOSI0/MOSI            J6-11                   MOSI0

- * P0[19]/DSR1/SDA1                  PAD17                   N/A

- * P0[20]/DTR1/SCL1                  PAD18    I2C E2PROM SCL N/A

- * P0[21]/RI1/MCIPWR/RD1             J6-23                  

- * P0[22]/RTS1/TD1                   J6-24    LED            

- * P0[23]/AD0[0]/I2SRX_CLK/CAP3[0]   J6-15                   AD0.0

- * P0[24]/AD0[1]/I2SRX_WS/CAP3[1]    J6-16                   AD0.1

- * P0[25]/AD0[2]/I2SRX_SDA/TXD3      J6-17                   AD0.2

- * P0[26]/AD0[3]/AOUT/RXD3           J6-18                   AD0.3/AOUT

- * P0[27]/SDA0/USB_SDA               J6-25                   

- * P0[28]/SCL0                       J6-26                   

- * P0[29]/USB_D+                     J6-37                   USB_D+

- * P0[30]/USB_D-                     J6-36                   USB_D-

- */

-

-#define GPIO_I2C1_EPROM_SDA   GPIO_I2C1_SDA_1

-#define GPIO_I2C1_EPROM_SDL   GPIO_I2C1_SCL_2

-#define GPIO_LED              (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT0 | GPIO_PIN22)

-

-/* P1[0]/ENET-TXD0                   J6-34?  TXD0            TX-(Ethernet PHY)

- * P1[1]/ENET_TXD1                   J6-35?  TXD1            TX+(Ethernet PHY)

- * P1[4]/ENET_TX_EN                          TXEN            N/A

- * P1[8]/ENET_CRS                            CRS_DV/MODE2    N/A

- * P1[9]/ENET_RXD0                   J6-32?  RXD0/MODE0      RD-(Ethernet PHY)

- * P1[10]/ENET_RXD1                  J6-33?  RXD1/MODE1      RD+(Ethernet PHY)

- * P1[14]/ENET_RX_ER                         RXER/PHYAD0     N/A

- * P1[15]/ENET_REF_CLK                       REFCLK          N/A

- * P1[16]/ENET_MDC                           MDC             N/A

- * P1[17]/ENET_MDIO                          MDIO            N/A

- * P1[18]/USB_UP_LED/PWM1[1]/CAP1[0] PAD1                    N/A

- * P1[19]/MC0A/USB_PPWR/N_CAP1.1     PAD2                    N/A

- * P1[20]/MCFB0/PWM1.2/SCK0          PAD3                    N/A

- * P1[21]/MCABORT/PWM1.3/SSEL0       PAD4                    N/A

- * P1[22]/MC0B/USB-PWRD/MAT1.0       PAD5                    N/A

- * P1[23]/MCFB1/PWM1.4/MISO0         PAD6                    N/A

- * P1[24]/MCFB2/PWM1.5/MOSI0         PAD7                    N/A

- * P1[25]/MC1A/MAT1.1                PAD8                    N/A

- * P1[26]/MC1B/PWM1.6/CAP0.0         PAD9                    N/A

- * P1[27]/CLKOUT/USB-OVRCR-N/CAP0.1  PAD10                   N/A

- * P1[28]/MC2A/PCAP1.0/MAT0.0        PAD11                   N/A

- * P1[29]/MC2B/PCAP1.1/MAT0.1        PAD12                   N/A

- * P1[30]/VBUS/AD0[4]                J6-19                   AD0.4

- * P1[31]/SCK1/AD0[5]                J6-20                   AD0.5

- *

- * P2[0]/PWM1.1/TXD1                 J6-42                   PWM1.1

- * P2[1]/PWM1.2/RXD1                 J6-43                   PWM1.2

- * P2[2]/PWM1.3/CTS1/TRACEDATA[3]    J6-44                   PWM1.3

- * P2[3]/PWM1.4/DCD1/TRACEDATA[2]    J6-45                   PWM1.4

- * P2[4]/PWM1.5/DSR1/TRACEDATA[1]    J6-46                   PWM1.5

- * P2[5]/PWM1[6]/DTR1/TRACEDATA[0]   J6-47                   PWM1.6

- * P2[6]/PCAP1[0]/RI1/TRACECLK       J6-48    

- * P2[7]/RD2/RTS1                    J6-49    

- * P2[8]/TD2/TXD2                    J6-50    

- * P2[9]/USB_CONNECT/RXD2            PAD19   USB Pullup      N/A

- * P2[10]/EINT0/NMI                  J6-51    

- * P2[11]/EINT1/I2STX_CLK            J6-52    

- * P2[12]/EINT2/I2STX_WS             J6-53    

- * P2[13]/EINT3/I2STX_SDA            J6-27                 

- */

-

-#define GPIO_USB_PULLUP      (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT2 | GPIO_PIN9)

-

-/* P3[25]/MAT0.0/PWM1.2              PAD13                   N/A

- * P3[26]/STCLK/MAT0.1/PWM1.3        PAD14                   N/A

- *

- * P4[28]/RX-MCLK/MAT2.0/TXD3        PAD15                   N/A

- * P4[29]/TX-MCLK/MAT2.1/RXD3        PAD16                   N/A

- */

-

-/************************************************************************************

- * Public Types

- ************************************************************************************/

-

-/************************************************************************************

- * Public data

- ************************************************************************************/

-

-#ifndef __ASSEMBLY__

-

-/************************************************************************************

- * Public Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Name: lpc17_sspinitialize

- *

- * Description:

- *   Called to configure SPI chip select GPIO pins for the LPCXpresso board.

- *

- ************************************************************************************/

-

-extern void weak_function lpc17_sspinitialize(void);

-

-#endif /* __ASSEMBLY__ */

-#endif /* _CONFIGS_LPCXPRESSO_LPC1768_SRC_LPCXPRESSO_INTERNAL_H */

-

+/************************************************************************************
+ * configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h
+ * arch/arm/src/board/lpcxpresso_internal.n
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef _CONFIGS_LPCXPRESSO_LPC1768_SRC_LPCXPRESSO_INTERNAL_H
+#define _CONFIGS_LPCXPRESSO_LPC1768_SRC_LPCXPRESSO_INTERNAL_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* LPCXpresso LPC1768 board pin usage ***********************************************/
+/* Pin Description                  Connector On Board       Base Board
+ * -------------------------------- --------- -------------- ---------------------
+ * P0[0]/RD1/TXD3/SDA1               J6-9     I2C E2PROM SDA TXD3/SDA1
+ * P0[1]/TD1/RXD3/SCL                J6-10                   RXD2/SCL1
+ * P0[2]/TXD0/AD0[7]                 J6-21    
+ * P0[3]/RXD0/AD0[6]                 J6-22    
+ * P0[4]/I2SRX-CLK/RD2/CAP2.0        J6-38                   CAN_RX2
+ * P0[5]/I2SRX-WS/TD2/CAP2.1         J6-39                   CAN_TX2
+ * P0[6]/I2SRX_SDA/SSEL1/MAT2[0]     J6-8                    SSEL1
+ * P0[7]/I2STX_CLK/SCK1/MAT2[1]      J6-7                    SCK1
+ * P0[8]/I2STX_WS/MISO1/MAT2[2]      J6-6                    MISO1
+ * P0[9]/I2STX_SDA/MOSI1/MAT2[3]     J6-5                    MOSI1
+ * P0[10]                            J6-40                   TXD2/SDA2
+ * P0[11]                            J6-41                   RXD2/SCL2
+ * P0[15]/TXD1/SCK0/SCK              J6-13                   TXD1/SCK0
+ * P0[16]/RXD1/SSEL0/SSEL            J6-14                   RXD1/SSEL0
+ * P0[17]/CTS1/MISO0/MISO            J6-12                   MISO0
+ * P0[18]/DCD1/MOSI0/MOSI            J6-11                   MOSI0
+ * P0[19]/DSR1/SDA1                  PAD17                   N/A
+ * P0[20]/DTR1/SCL1                  PAD18    I2C E2PROM SCL N/A
+ * P0[21]/RI1/MCIPWR/RD1             J6-23                  
+ * P0[22]/RTS1/TD1                   J6-24    LED            
+ * P0[23]/AD0[0]/I2SRX_CLK/CAP3[0]   J6-15                   AD0.0
+ * P0[24]/AD0[1]/I2SRX_WS/CAP3[1]    J6-16                   AD0.1
+ * P0[25]/AD0[2]/I2SRX_SDA/TXD3      J6-17                   AD0.2
+ * P0[26]/AD0[3]/AOUT/RXD3           J6-18                   AD0.3/AOUT
+ * P0[27]/SDA0/USB_SDA               J6-25                   
+ * P0[28]/SCL0                       J6-26                   
+ * P0[29]/USB_D+                     J6-37                   USB_D+
+ * P0[30]/USB_D-                     J6-36                   USB_D-
+ */
+
+#define GPIO_I2C1_EPROM_SDA   GPIO_I2C1_SDA_1
+#define GPIO_I2C1_EPROM_SDL   GPIO_I2C1_SCL_2
+#define GPIO_LED              (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT0 | GPIO_PIN22)
+
+/* P1[0]/ENET-TXD0                   J6-34?  TXD0            TX-(Ethernet PHY)
+ * P1[1]/ENET_TXD1                   J6-35?  TXD1            TX+(Ethernet PHY)
+ * P1[4]/ENET_TX_EN                          TXEN            N/A
+ * P1[8]/ENET_CRS                            CRS_DV/MODE2    N/A
+ * P1[9]/ENET_RXD0                   J6-32?  RXD0/MODE0      RD-(Ethernet PHY)
+ * P1[10]/ENET_RXD1                  J6-33?  RXD1/MODE1      RD+(Ethernet PHY)
+ * P1[14]/ENET_RX_ER                         RXER/PHYAD0     N/A
+ * P1[15]/ENET_REF_CLK                       REFCLK          N/A
+ * P1[16]/ENET_MDC                           MDC             N/A
+ * P1[17]/ENET_MDIO                          MDIO            N/A
+ * P1[18]/USB_UP_LED/PWM1[1]/CAP1[0] PAD1                    N/A
+ * P1[19]/MC0A/USB_PPWR/N_CAP1.1     PAD2                    N/A
+ * P1[20]/MCFB0/PWM1.2/SCK0          PAD3                    N/A
+ * P1[21]/MCABORT/PWM1.3/SSEL0       PAD4                    N/A
+ * P1[22]/MC0B/USB-PWRD/MAT1.0       PAD5                    N/A
+ * P1[23]/MCFB1/PWM1.4/MISO0         PAD6                    N/A
+ * P1[24]/MCFB2/PWM1.5/MOSI0         PAD7                    N/A
+ * P1[25]/MC1A/MAT1.1                PAD8                    N/A
+ * P1[26]/MC1B/PWM1.6/CAP0.0         PAD9                    N/A
+ * P1[27]/CLKOUT/USB-OVRCR-N/CAP0.1  PAD10                   N/A
+ * P1[28]/MC2A/PCAP1.0/MAT0.0        PAD11                   N/A
+ * P1[29]/MC2B/PCAP1.1/MAT0.1        PAD12                   N/A
+ * P1[30]/VBUS/AD0[4]                J6-19                   AD0.4
+ * P1[31]/SCK1/AD0[5]                J6-20                   AD0.5
+ *
+ * P2[0]/PWM1.1/TXD1                 J6-42                   PWM1.1
+ * P2[1]/PWM1.2/RXD1                 J6-43                   PWM1.2
+ * P2[2]/PWM1.3/CTS1/TRACEDATA[3]    J6-44                   PWM1.3
+ * P2[3]/PWM1.4/DCD1/TRACEDATA[2]    J6-45                   PWM1.4
+ * P2[4]/PWM1.5/DSR1/TRACEDATA[1]    J6-46                   PWM1.5
+ * P2[5]/PWM1[6]/DTR1/TRACEDATA[0]   J6-47                   PWM1.6
+ * P2[6]/PCAP1[0]/RI1/TRACECLK       J6-48    
+ * P2[7]/RD2/RTS1                    J6-49    
+ * P2[8]/TD2/TXD2                    J6-50    
+ * P2[9]/USB_CONNECT/RXD2            PAD19   USB Pullup      N/A
+ * P2[10]/EINT0/NMI                  J6-51    
+ * P2[11]/EINT1/I2STX_CLK            J6-52    
+ * P2[12]/EINT2/I2STX_WS             J6-53    
+ * P2[13]/EINT3/I2STX_SDA            J6-27                 
+ */
+
+#define GPIO_USB_PULLUP      (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT2 | GPIO_PIN9)
+
+/* P3[25]/MAT0.0/PWM1.2              PAD13                   N/A
+ * P3[26]/STCLK/MAT0.1/PWM1.3        PAD14                   N/A
+ *
+ * P4[28]/RX-MCLK/MAT2.0/TXD3        PAD15                   N/A
+ * P4[29]/TX-MCLK/MAT2.1/RXD3        PAD16                   N/A
+ */
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc17_sspinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the LPCXpresso board.
+ *
+ ************************************************************************************/
+
+extern void weak_function lpc17_sspinitialize(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* _CONFIGS_LPCXPRESSO_LPC1768_SRC_LPCXPRESSO_INTERNAL_H */
+
diff --git a/nuttx/configs/lpcxpresso-lpc1768/src/up_boot.c b/nuttx/configs/lpcxpresso-lpc1768/src/up_boot.c
index 46535b74a..137df2f18 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/src/up_boot.c
+++ b/nuttx/configs/lpcxpresso-lpc1768/src/up_boot.c
@@ -1,93 +1,93 @@
-/************************************************************************************

- * configs/lpcxpresso-lpc1768/src/up_boot.c

- * arch/arm/src/board/up_boot.c

- *

- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.

- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- *

- * 1. Redistributions of source code must retain the above copyright

- *    notice, this list of conditions and the following disclaimer.

- * 2. Redistributions in binary form must reproduce the above copyright

- *    notice, this list of conditions and the following disclaimer in

- *    the documentation and/or other materials provided with the

- *    distribution.

- * 3. Neither the name NuttX nor the names of its contributors may be

- *    used to endorse or promote products derived from this software

- *    without specific prior written permission.

- *

- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

- * POSSIBILITY OF SUCH DAMAGE.

- *

- ************************************************************************************/

-

-/************************************************************************************

- * Included Files

- ************************************************************************************/

-

-#include <nuttx/config.h>

-

-#include <debug.h>

-

-#include <arch/board/board.h>

-

-#include "up_arch.h"

-#include "up_internal.h"

-

-#include "lpc17_internal.h"

-#include "lpcxpresso_internal.h"

-

-/************************************************************************************

- * Definitions

- ************************************************************************************/

-

-/************************************************************************************

- * Private Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Public Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Name: lpc17_boardinitialize

- *

- * Description:

- *   All LPC17xx 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 lpc17_boardinitialize(void)

-{

-  /* Configure SSP chip selects if 1) at least one SSP is enabled, and 2) the weak

-   * function lpc17_sspinitialize() has been brought into the link.

-   */

-

-#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)

-  if (lpc17_sspinitialize)

-    {

-      lpc17_sspinitialize();

-    }

-#endif

-

-  /* Configure on-board LEDs if LED support has been selected. */

-

-#ifdef CONFIG_ARCH_LEDS

-  up_ledinit();

-#endif

-}

+/************************************************************************************
+ * configs/lpcxpresso-lpc1768/src/up_boot.c
+ * arch/arm/src/board/up_boot.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "up_internal.h"
+
+#include "lpc17_internal.h"
+#include "lpcxpresso_internal.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc17_boardinitialize
+ *
+ * Description:
+ *   All LPC17xx 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 lpc17_boardinitialize(void)
+{
+  /* Configure SSP chip selects if 1) at least one SSP is enabled, and 2) the weak
+   * function lpc17_sspinitialize() has been brought into the link.
+   */
+
+#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)
+  if (lpc17_sspinitialize)
+    {
+      lpc17_sspinitialize();
+    }
+#endif
+
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  up_ledinit();
+#endif
+}
diff --git a/nuttx/configs/lpcxpresso-lpc1768/src/up_ssp.c b/nuttx/configs/lpcxpresso-lpc1768/src/up_ssp.c
index 89da4cfdf..01e6020d8 100755
--- a/nuttx/configs/lpcxpresso-lpc1768/src/up_ssp.c
+++ b/nuttx/configs/lpcxpresso-lpc1768/src/up_ssp.c
@@ -1,161 +1,161 @@
-/************************************************************************************

- * configs/lpcxpresso-lpc1768/src/up_ssp.c

- * arch/arm/src/board/up_ssp.c

- *

- *   Copyright (C) 2010 Gregory Nutt. All rights reserved.

- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- *

- * 1. Redistributions of source code must retain the above copyright

- *    notice, this list of conditions and the following disclaimer.

- * 2. Redistributions in binary form must reproduce the above copyright

- *    notice, this list of conditions and the following disclaimer in

- *    the documentation and/or other materials provided with the

- *    distribution.

- * 3. Neither the name NuttX nor the names of its contributors may be

- *    used to endorse or promote products derived from this software

- *    without specific prior written permission.

- *

- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

- * POSSIBILITY OF SUCH DAMAGE.

- *

- ************************************************************************************/

-

-/************************************************************************************

- * Included Files

- ************************************************************************************/

-

-#include <nuttx/config.h>

-

-#include <stdint.h>

-#include <stdbool.h>

-#include <debug.h>

-

-#include <nuttx/spi.h>

-#include <arch/board/board.h>

-

-#include "up_arch.h"

-#include "chip.h"

-#include "lpc17_internal.h"

-#include "lpcxpresso_internal.h"

-

-/* The LM3S6965 Eval Kit microSD CS is on SSI0 */

-

-#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)

-

-/************************************************************************************

- * Definitions

- ************************************************************************************/

-

-/* Enables debug output from this file (needs CONFIG_DEBUG too) */

-

-#undef SSP_DEBUG   /* Define to enable debug */

-#undef SSP_VERBOSE /* Define to enable verbose debug */

-

-#ifdef SSP_DEBUG

-#  define sspdbg  lldbg

-#  ifdef SSP_VERBOSE

-#    define sspvdbg lldbg

-#  else

-#    define sspvdbg(x...)

-#  endif

-#else

-#  undef SSP_VERBOSE

-#  define sspdbg(x...)

-#  define sspvdbg(x...)

-#endif

-

-/* Dump GPIO registers */

-

-#ifdef SSP_VERBOSE

-#  define ssp_dumpgpio(m) lpc17_dumpgpio(SDCCS_GPIO, m)

-#else

-#  define ssp_dumpgpio(m)

-#endif

-

-/************************************************************************************

- * Private Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Public Functions

- ************************************************************************************/

-

-/************************************************************************************

- * Name: lpc17_sspinitialize

- *

- * Description:

- *   Called to configure SPI chip select GPIO pins for the LM3S6965 Eval Kit.

- *

- ************************************************************************************/

-

-void weak_function lpc17_sspinitialize(void)

-{

-  /* Configure the SPI-based microSD CS GPIO */

-

-  ssp_dumpgpio("lpc17_sspinitialize() Entry)");

-#warning "Configure chip selects here"  

-  ssp_dumpgpio("lpc17_sspinitialize() Exit");

-}

-

-/************************************************************************************

- * Name:  lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status

- *

- * Description:

- *   The external functions, lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status 

- *   must be provided by board-specific logic.  They are implementations of the select

- *   and status methods of the SPI interface defined by struct spi_ops_s (see

- *   include/nuttx/spi.h). All other methods (including up_spiinitialize())

- *   are provided by common LPC17xx logic.  To use this common SPI logic on your

- *   board:

- *

- *   1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select

- *      pins.

- *   2. Provide lpc17_ssp0/ssp1select() and lpc17_ssp0/ssp1status() functions

- *      in your board-specific logic.  These functions will perform chip selection

- *      and status operations using GPIOs in the way your board is configured.

- *   3. Add a calls to up_spiinitialize() in your low level application

- *      initialization logic

- *   4. The handle returned by up_spiinitialize() may then be used to bind the

- *      SPI driver to higher level logic (e.g., calling 

- *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to

- *      the SPI MMC/SD driver).

- *

- ************************************************************************************/

-

-#ifdef CONFIG_LPC17_SSP0

-void  lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)

-{

-  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");

-  ssp_dumpgpio("lpc17_spiselect() Entry");

-

-#warning "Assert CS here (false)"

-

-  ssp_dumpgpio("lpc17_spiselect() Exit");

-}

-

-uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)

-{

-  sspdbg("Returning SPI_STATUS_PRESENT\n");

-  return SPI_STATUS_PRESENT;

-}

-#endif

-

-#ifdef CONFIG_LPC17_SSP1

-# warning "SSP1 chip selects not known"

-#endif

-

-#endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */

+/************************************************************************************
+ * configs/lpcxpresso-lpc1768/src/up_ssp.c
+ * arch/arm/src/board/up_ssp.c
+ *
+ *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "lpc17_internal.h"
+#include "lpcxpresso_internal.h"
+
+/* The LM3S6965 Eval Kit microSD CS is on SSI0 */
+
+#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#undef SSP_DEBUG   /* Define to enable debug */
+#undef SSP_VERBOSE /* Define to enable verbose debug */
+
+#ifdef SSP_DEBUG
+#  define sspdbg  lldbg
+#  ifdef SSP_VERBOSE
+#    define sspvdbg lldbg
+#  else
+#    define sspvdbg(x...)
+#  endif
+#else
+#  undef SSP_VERBOSE
+#  define sspdbg(x...)
+#  define sspvdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#ifdef SSP_VERBOSE
+#  define ssp_dumpgpio(m) lpc17_dumpgpio(SDCCS_GPIO, m)
+#else
+#  define ssp_dumpgpio(m)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc17_sspinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the LM3S6965 Eval Kit.
+ *
+ ************************************************************************************/
+
+void weak_function lpc17_sspinitialize(void)
+{
+  /* Configure the SPI-based microSD CS GPIO */
+
+  ssp_dumpgpio("lpc17_sspinitialize() Entry)");
+#warning "Configure chip selects here"  
+  ssp_dumpgpio("lpc17_sspinitialize() Exit");
+}
+
+/************************************************************************************
+ * Name:  lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status
+ *
+ * Description:
+ *   The external functions, lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status 
+ *   must be provided by board-specific logic.  They are implementations of the select
+ *   and status methods of the SPI interface defined by struct spi_ops_s (see
+ *   include/nuttx/spi.h). All other methods (including up_spiinitialize())
+ *   are provided by common LPC17xx logic.  To use this common SPI logic on your
+ *   board:
+ *
+ *   1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select
+ *      pins.
+ *   2. Provide lpc17_ssp0/ssp1select() and lpc17_ssp0/ssp1status() functions
+ *      in your board-specific logic.  These functions will perform chip selection
+ *      and status operations using GPIOs in the way your board is configured.
+ *   3. Add a calls to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   4. The handle returned by up_spiinitialize() may then be used to bind the
+ *      SPI driver to higher level logic (e.g., calling 
+ *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ *      the SPI MMC/SD driver).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_LPC17_SSP0
+void  lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  ssp_dumpgpio("lpc17_spiselect() Entry");
+
+#warning "Assert CS here (false)"
+
+  ssp_dumpgpio("lpc17_spiselect() Exit");
+}
+
+uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning SPI_STATUS_PRESENT\n");
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_LPC17_SSP1
+# warning "SSP1 chip selects not known"
+#endif
+
+#endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */
diff --git a/nuttx/configs/lpcxpresso-lpc1768/tools/dfu_util.sh b/nuttx/configs/lpcxpresso-lpc1768/tools/dfu_util.sh
new file mode 100755
index 000000000..06e6912d6
--- /dev/null
+++ b/nuttx/configs/lpcxpresso-lpc1768/tools/dfu_util.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+####################################################################################
+# dfu-util - (C) 2007-2008 by OpenMoko Inc.
+# This program is Free Software and has ABSOLUTELY NO WARRANTY
+# 
+# You need to specify one of -D or -U
+# Usage: dfu-util [options] ...
+#   -h --help                     Print this help message
+#   -V --version                  Print the version number
+#   -l --list                     List the currently attached DFU capable USB devices
+#   -d --device vendor:product    Specify Vendor/Product ID of DFU device
+#   -p --path bus-port. ... .port Specify path to DFU device
+#   -c --cfg config_nr            Specify the Configuration of DFU device
+#   -i --intf intf_nr             Specify the DFU Interface number
+#   -a --alt alt                  Specify the Altsetting of the DFU Interface
+#                                 by name or by number
+#   -t --transfer-size            Specify the number of bytes per USB Transfer
+#   -U --upload file              Read firmware from device into <file>
+#   -D --download file            Write firmware from <file> into device
+#   -R --reset                    Issue USB Reset signalling once we're finished
+####################################################################################
+# Example:
+#
+# /usr/local/LPCXpresso/bin/Flash$ dfu-util -l
+# dfu-util - (C) 2007-2008 by OpenMoko Inc.
+# This program is Free Software and has ABSOLUTELY NO WARRANTY
+#
+# Found Runtime: [0x0471:0xdf55] devnum=3, cfg=0, intf=0, alt=0, name="UNDEFINED"
+#
+# dmesg:
+# [    1.472016] usb 1-3: new high speed USB device using ehci_hcd and address 3
+# [    1.604784] usb 1-3: configuration #1 chosen from 1 choice
+#
+####################################################################################
+
+DFU_UTIL=/usr/local/LPCXpresso/bin/dfu-util
+NUTTX=/home/patacongo/projects/nuttx/nuttx/trunk/nuttx/nuttx
+#${DFU_UTIL} -d nxp:lpc1768 -p 1-3 -c 0 -i 0 -a 0 -D ${NUTTX} -R
+${DFU_UTIL} -d nxp:lpc1768 -D ${NUTTX} -R
+
+