Add Teensy NSH config; remove unusable AVR ostest configs

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3718 42af7a65-404d-4744-a932-0658087f49c3

18 files changed, 323 insertions, 1427 deletions

diff --git a/nuttx/TODO b/nuttx/TODO
index 48bf49e89..8c160adc9 100644
--- a/nuttx/TODO
+++ b/nuttx/TODO
@@ -1,4 +1,4 @@
-NuttX TODO List (Last updated June 16, 2011)
+NuttX TODO List (Last updated June 17, 2011)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 nuttx/
@@ -888,6 +888,8 @@ o AVR (arch/avr)
                 have a compatible AVR emulator to check things out in detail.  I am
                 thinking that there is some fuse setting that divides the input clock
                 by 8??? but that is just a fantasy.
+                Update: No, something else is wrong; the Teensy AT90USB behaves in
+                exactly the same way.
   Status:       Open
   Priority:     Low.  Setting the terminal BAUD to 4800 solves the issues.  However,
                 I suspect that this means that there are other lurking timing issues
@@ -900,13 +902,16 @@ o AVR (arch/avr)
   Priority:     The priority might as well be low since there is nothing I can do about
                 it anyway.
 
-  Description:   There is a OS test configuratin for the Micropendous AT90USB at
-                configs/micropendous3.  However, as currently configured it will not
-                fit into the AT90USB memory.  Some tuning and scaling is required and
-                obviously this configuration is untested.
+  Description:  Many printf-intensive examples (such as the OS test) cannot be executed
+                on most AVR platforms.  The reason is because these tests/examples
+                generate a lot of string data.  The build system currently places all
+                string data in RAM and the string data can easily overflow the tiny
+                SRAMs on these parts.  A solution would be to put the string data
+                into the more abundant FLASH memory, but this would require modification
+                to the printf logic to access the strings from program memory.
   Status:       Open
-  Priority:     Low for me because the AT90USB647 is not a very interesting target to
-                me because of its limited memory capability./
+  Priority:     Low.  The AVR is probably not the architecuture that you want to use
+                for extensive string operations.
 
 o Intel x86 (arch/x86)
   ^^^^^^^^^^^^^^^^^^^^
diff --git a/nuttx/configs/amber/README.txt b/nuttx/configs/amber/README.txt
index 39be7fc0e..238ba5076 100644
--- a/nuttx/configs/amber/README.txt
+++ b/nuttx/configs/amber/README.txt
@@ -502,8 +502,5 @@ NOTE: You must also copy avr-libc header files, perhaps like:
 
 Where <subdir> is one of the following:
 
-  ostest:
-    This configuration directory, performs a simple OS test using
-    apps/examples/ostest.  NOTE:  The OS test is quite large.  In order
-    to get it to fit within AVR memory constraints, it will probably be
-    necessary to disable some OS features.
+  hello:
+    The simple apps/examples/hello "Hello, World!" example.
diff --git a/nuttx/configs/amber/ostest/defconfig b/nuttx/configs/amber/ostest/defconfig
deleted file mode 100644
index e009c6b17..000000000
--- a/nuttx/configs/amber/ostest/defconfig
+++ /dev/null
@@ -1,820 +0,0 @@
-############################################################################
-# configs/amber/ostest/defconfig
-#
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
-#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in
-#    the documentation and/or other materials provided with the
-#    distribution.
-# 3. Neither the name NuttX nor the names of its contributors may be
-#    used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-#
-############################################################################
-#
-# architecture selection
-#
-# CONFIG_ARCH - identifies the arch subdirectory and, hence, the
-#   processor architecture.
-# CONFIG_ARCH_family - for use in C code.  This identifies the
-#   particular chip family that the architecture is implemented
-#   in.
-# CONFIG_ARCH_architecture - for use in C code.  This identifies the
-#   specific architecture within the chip 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)
-# 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_IRQPRIO - The ATMega128 does not support 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=avr
-CONFIG_ARCH_AVR=y
-CONFIG_ARCH_ATMEGA=y
-CONFIG_ARCH_CHIP=atmega
-CONFIG_ARCH_CHIP_ATMEGA128=y
-CONFIG_ARCH_BOARD=amber
-CONFIG_ARCH_BOARD_AMBER=y
-CONFIG_BOARD_LOOPSPERMSEC=(8*100)
-CONFIG_DRAM_SIZE=(4*1024)
-CONFIG_DRAM_START=0x800100
-CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
-CONFIG_ARCH_NOINTC=y
-CONFIG_ARCH_IRQPRIO=n
-CONFIG_ARCH_INTERRUPTSTACK=n
-CONFIG_ARCH_STACKDUMP=y
-CONFIG_ARCH_BOOTLOADER=n
-CONFIG_ARCH_LEDS=n
-CONFIG_ARCH_BUTTONS=n
-CONFIG_ARCH_CALIBRATION=n
-CONFIG_ARCH_DMA=n
-
-#
-# Identify toolchain and linker options
-#
-CONFIG_AVR_WINAVR=n
-CONFIG_AVR_LINUXGCC=n
-CONFIG_AVR_BUILDROOT=y
-
-#
-#  Individual subsystems can be enabled:
-#
-CONFIG_AVR_INT0=n
-CONFIG_AVR_INT1=n
-CONFIG_AVR_INT2=n
-CONFIG_AVR_INT3=n
-CONFIG_AVR_INT4=n
-CONFIG_AVR_INT5=n
-CONFIG_AVR_INT6=n
-CONFIG_AVR_INT7=n
-CONFIG_AVR_TIMER0=n
-CONFIG_AVR_TIMER1=n
-CONFIG_AVR_TIMER2=n
-CONFIG_AVR_TIMER3=n
-CONFIG_AVR_SPI=n
-CONFIG_AVR_USART0=y
-CONFIG_AVR_USART1=n
-CONFIG_AVR_ADC=n
-CONFIG_AVR_ANACOMP=n
-CONFIG_AVR_TWI=n
-
-#
-# ATMega128 specific serial device driver settings
-#
-# CONFIG_USARTn_SERIAL_CONSOLE - selects the USARTn for the
-#   console and ttys0 (default is the USART1).
-# CONFIG_USARTn_RXBUFSIZE - Characters are buffered as received.
-#   This specific the size of the receive buffer
-# CONFIG_USARTn_TXBUFSIZE - Characters are buffered before
-#   being sent.  This specific the size of the transmit buffer
-# CONFIG_USARTn_BAUD - The configure BAUD of the USART.  Must be
-# CONFIG_USARTn_BITS - The number of bits.  Must be either 7 or 8.
-# CONFIG_USARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
-# CONFIG_USARTn_2STOP - Two stop bits
-#
-CONFIG_USART0_SERIAL_CONSOLE=y
-CONFIG_USART0_TXBUFSIZE=256
-CONFIG_USART0_RXBUFSIZE=256
-CONFIG_USART0_BAUD=38400
-CONFIG_USART0_BITS=8
-CONFIG_USART0_PARITY=0
-CONFIG_USART0_2STOP=0
-
-CONFIG_USART1_SERIAL_CONSOLE=n
-CONFIG_USART1_TXBUFSIZE=256
-CONFIG_USART1_RXBUFSIZE=256
-CONFIG_USART1_BAUD=38400
-CONFIG_USART1_BITS=8
-CONFIG_USART1_PARITY=0
-CONFIG_USART1_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=200
-CONFIG_SCHED_INSTRUMENTATION=n
-CONFIG_TASK_NAME_SIZE=0
-CONFIG_START_YEAR=2011
-CONFIG_START_MONTH=4
-CONFIG_START_DAY=8
-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_USBSER
-#   Enable compilation of the USB serial driver
-# CONFIG_USBSER_EPINTIN
-#   The logical 7-bit address of a hardware endpoint that supports
-#   interrupt IN operation
-# CONFIG_USBSER_EPBULKOUT
-#   The logical 7-bit address of a hardware endpoint that supports
-#   bulk OUT operation
-# CONFIG_USBSER_EPBULKIN
-#   The logical 7-bit address of a hardware endpoint that supports
-#   bulk IN operation
-# # CONFIG_USBSER_NWRREQS and CONFIG_USBSER_NRDREQS
-#   The number of write/read requests that can be in flight
-# CONFIG_USBSER_VENDORID and CONFIG_USBSER_VENDORSTR
-#   The vendor ID code/string
-# CONFIG_USBSER_PRODUCTID and CONFIG_USBSER_PRODUCTSTR
-#   The product ID code/string
-# CONFIG_USBSER_RXBUFSIZE and CONFIG_USBSER_TXBUFSIZE
-#   Size of the serial receive/transmit buffers
-#
-CONFIG_USBSER=n
-CONFIG_USBSER_EPINTIN=1
-CONFIG_USBSER_EPBULKOUT=2
-CONFIG_USBSER_EPBULKIN=5
-CONFIG_USBSER_NWRREQS=4
-CONFIG_USBSER_NRDREQS=4
-CONFIG_USBSER_VENDORID=0x067b
-CONFIG_USBSER_PRODUCTID=0x2303
-CONFIG_USBSER_VENDORSTR="Nuttx"
-CONFIG_USBSER_PRODUCTSTR="USBdev Serial"
-CONFIG_USBSER_RXBUFSIZE=512
-CONFIG_USBSER_TXBUFSIZE=512
-
-#
-# USB Storage Device Configuration
-#
-# CONFIG_USBSTRG
-#   Enable compilation of the USB storage driver
-# CONFIG_USBSTRG_EP0MAXPACKET
-#   Max packet size for endpoint 0
-# CONFIG_USBSTRG_EPBULKOUT and CONFIG_USBSTRG_EPBULKIN
-#   The logical 7-bit address of a hardware endpoints that support
-#   bulk OUT and IN operations
-# CONFIG_USBSTRG_NWRREQS and CONFIG_USBSTRG_NRDREQS
-#   The number of write/read requests that can be in flight
-# CONFIG_USBSTRG_BULKINREQLEN and CONFIG_USBSTRG_BULKOUTREQLEN
-#   The size of the buffer in each write/read request.  This
-#   value needs to be at least as large as the endpoint
-#   maxpacket and ideally as large as a block device sector.
-# CONFIG_USBSTRG_VENDORID and CONFIG_USBSTRG_VENDORSTR
-#   The vendor ID code/string
-# CONFIG_USBSTRG_PRODUCTID and CONFIG_USBSTRG_PRODUCTSTR
-#   The product ID code/string
-# CONFIG_USBSTRG_REMOVABLE
-#   Select if the media is removable
-#
-CONFIG_USBSTRG=n
-CONFIG_USBSTRG_EP0MAXPACKET=64
-CONFIG_USBSTRG_EPBULKOUT=2
-CONFIG_USBSTRG_EPBULKIN=5
-CONFIG_USBSTRG_NRDREQS=2
-CONFIG_USBSTRG_NWRREQS=2
-CONFIG_USBSTRG_BULKINREQLEN=256
-CONFIG_USBSTRG_BULKOUTREQLEN=256
-CONFIG_USBSTRG_VENDORID=0x584e
-CONFIG_USBSTRG_VENDORSTR="NuttX"
-CONFIG_USBSTRG_PRODUCTID=0x5342
-CONFIG_USBSTRG_PRODUCTSTR="USBdev Storage"
-CONFIG_USBSTRG_VERSIONNO=0x0399
-CONFIG_USBSTRG_REMOVABLE=y
-
-#
-# Settings for examples/uip
-#
-CONFIG_EXAMPLE_UIP_IPADDR=(10<<24|0<<16|0<<8|2)
-CONFIG_EXAMPLE_UIP_DRIPADDR=(10<<24|0<<16|0<<8|1)
-CONFIG_EXAMPLE_UIP_NETMASK=(255<<24|255<<16|255<<8|0)
-CONFIG_EXAMPLE_UIP_DHCPC=n
-
-#
-# Settings for examples/nettest
-#
-# CONFIG_EXAMPLE_NETTEST_SERVER - 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_STACKSIZE - Stack size to use for new threads.
-# CONFIG_NSH_NESTDEPTH - Max number of nested if-then[-else]-fi
-# CONFIG_NSH_DISABLESCRIPT - Disable scripting support
-# CONFIG_NSH_DISABLEBG - Disable background commands
-# CONFIG_NSH_ROMFSETC - Use startup script in /etc
-# CONFIG_NSH_CONSOLE - Use serial console front end
-# CONFIG_NSH_TELNET - Use telnetd console front end
-# CONFIG_NSH_ARCHINIT - Platform provides architecture
-#   specific initialization (nsh_archinitialize()).
-#
-# If CONFIG_NSH_TELNET is selected:
-# CONFIG_NSH_IOBUFFER_SIZE -- Telnetd I/O buffer size
-# CONFIG_NSH_DHCPC - Obtain address using DHCP
-# CONFIG_NSH_IPADDR - Provides static IP address
-# CONFIG_NSH_DRIPADDR - Provides static router IP address
-# CONFIG_NSH_NETMASK - Provides static network mask
-# CONFIG_NSH_NOMAC - Use a bogus MAC address
-#
-# If CONFIG_NSH_ROMFSETC is selected:
-# CONFIG_NSH_ROMFSMOUNTPT - ROMFS mountpoint
-# CONFIG_NSH_INITSCRIPT - Relative path to init script
-# CONFIG_NSH_ROMFSDEVNO - ROMFS RAM device minor
-# CONFIG_NSH_ROMFSSECTSIZE - ROMF sector size
-# CONFIG_NSH_FATDEVNO - FAT FS RAM device minor
-# CONFIG_NSH_FATSECTSIZE - FAT FS sector size
-# CONFIG_NSH_FATNSECTORS - FAT FS number of sectors
-# CONFIG_NSH_FATMOUNTPT - FAT FS mountpoint
-#
-CONFIG_NSH_FILEIOSIZE=512
-CONFIG_NSH_STRERROR=n
-CONFIG_NSH_LINELEN=64
-CONFIG_NSH_STACKSIZE=2048
-CONFIG_NSH_NESTDEPTH=3
-CONFIG_NSH_DISABLESCRIPT=n
-CONFIG_NSH_DISABLEBG=n
-CONFIG_NSH_ROMFSETC=n
-CONFIG_NSH_CONSOLE=y
-CONFIG_NSH_TELNET=n
-CONFIG_NSH_ARCHINIT=n
-CONFIG_NSH_IOBUFFER_SIZE=512
-CONFIG_NSH_DHCPC=n
-CONFIG_NSH_NOMAC=n
-CONFIG_NSH_IPADDR=(10<<24|0<<16|0<<8|2)
-CONFIG_NSH_DRIPADDR=(10<<24|0<<16|0<<8|1)
-CONFIG_NSH_NETMASK=(255<<24|255<<16|255<<8|0)
-CONFIG_NSH_ROMFSMOUNTPT="/etc"
-CONFIG_NSH_INITSCRIPT="init.d/rcS"
-CONFIG_NSH_ROMFSDEVNO=0
-CONFIG_NSH_ROMFSSECTSIZE=64
-CONFIG_NSH_FATDEVNO=1
-CONFIG_NSH_FATSECTSIZE=512
-CONFIG_NSH_FATNSECTORS=1024
-CONFIG_NSH_FATMOUNTPT=/tmp
-
-#
-# Architecture-specific NSH options
-#
-CONFIG_NSH_MMCSDSPIPORTNO=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_USBSTRG_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_USBSTRG_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_USBSTRG_DEVPATH1
-#    The full path to the registered block driver.  Default is "/dev/mmcsd0"
-#  CONFIG_EXAMPLES_USBSTRG_DEVMINOR2 and CONFIG_EXAMPLES_USBSTRG_DEVPATH2
-#    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBSTRG_NLUNS
-#    is 2 or 3.  No defaults.
-#  CONFIG_EXAMPLES_USBSTRG_DEVMINOR3 and CONFIG_EXAMPLES_USBSTRG_DEVPATH3
-#    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBSTRG_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_USBSTRG_TRACEINIT
-#    Show initialization events
-#  CONFIG_EXAMPLES_USBSTRG_TRACECLASS
-#    Show class driver events
-#  CONFIG_EXAMPLES_USBSTRG_TRACETRANSFERS
-#    Show data transfer events
-#  CONFIG_EXAMPLES_USBSTRG_TRACECONTROLLER
-#    Show controller events
-#  CONFIG_EXAMPLES_USBSTRG_TRACEINTERRUPTS
-#    Show interrupt-related events.
-#
-CONFIG_EXAMPLES_USBSTRG_NLUNS=1
-CONFIG_EXAMPLES_USBSTRG_DEVMINOR1=0
-CONFIG_EXAMPLES_USBSTRG_DEVPATH1="/dev/mmcsd0"
-CONFIG_EXAMPLES_USBSTRG_TRACEINIT=n
-CONFIG_EXAMPLES_USBSTRG_TRACECLASS=n
-CONFIG_EXAMPLES_USBSTRG_TRACETRANSFERS=n
-CONFIG_EXAMPLES_USBSTRG_TRACECONTROLLER=n
-CONFIG_EXAMPLES_USBSTRG_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 ATMega128 which always runs from flash)
-# CONFIG_BOOT_COPYTORAM -  Some configurations boot in FLASH
-#   but copy themselves entirely into RAM for better performance.
-# CONFIG_CUSTOM_STACK - The up_ implementation will handle
-#   all stack operations outside of the nuttx model.
-# CONFIG_STACK_POINTER - The initial stack pointer (arm7tdmi only)
-# CONFIG_IDLETHREAD_STACKSIZE - The size of the initial stack.
-#  This is the thread that (1) performs the inital boot of the system up
-#  to the point where user_start() is spawned, and (2) there after is the
-#  IDLE thread that executes only when there is no other thread ready to
-#  run.
-# CONFIG_USERMAIN_STACKSIZE - The size of the stack to allocate
-#  for the main user thread that begins at the user_start() entry point.
-# CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
-# CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
-# CONFIG_HEAP_BASE - The beginning of the heap
-# CONFIG_HEAP_SIZE - The size of the heap
-#
-CONFIG_BOOT_RUNFROMFLASH=n
-CONFIG_BOOT_COPYTORAM=n
-CONFIG_CUSTOM_STACK=n
-CONFIG_STACK_POINTER=
-CONFIG_IDLETHREAD_STACKSIZE=1024
-CONFIG_USERMAIN_STACKSIZE=2048
-CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=2048
-CONFIG_HEAP_BASE=
-CONFIG_HEAP_SIZE=
diff --git a/nuttx/configs/amber/ostest/ld.script b/nuttx/configs/amber/ostest/ld.script
deleted file mode 100644
index 86a312ffa..000000000
--- a/nuttx/configs/amber/ostest/ld.script
+++ /dev/null
@@ -1,210 +0,0 @@
-/**************************************************************************************
- * configs/amber/ostest/ld.script
- *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *	notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *	notice, this list of conditions and the following disclaimer in
- *	the documentation and/or other materials provided with the
- *	distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *	used to endorse or promote products derived from this software
- *	without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- **************************************************************************************/
-/* Memory Regions *********************************************************************/
-/* -------------- ------ ------+------- -- ------ -- ------ --- ------ ----+------- ---
- *                FLASH        | REGISTERS I/O       EXT I/O    ISRAM      | EEPROM
- *                             |           REGISTERS REGISTERS             |
- * -------------- ------ ------+------- -- ------ -- ------ --- ------ ----+------- ---
- * ATMEGA128*     0x0000 128Kb | 0x0000 32 0x0020 64 0x0060 160 0x0100 4Kb | 0x0000 4Kb
- * -------------- ------ ------+------- -- ------ -- ------ --- ------ ----+------- ---
- * *Memory configuration A
- */
-
-MEMORY
-{
-	flash    (rx) : ORIGIN = 0, LENGTH = 128K
-	sram   (rw!x) : ORIGIN = 0x800100, LENGTH = 4K
-	eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 4K
-}
-
-OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
-OUTPUT_ARCH(avr:5)
-ENTRY(__start)
-
-SECTIONS
-{
-	/* Read-only sections, merged into text segment: */
-
-	.hash			: { *(.hash) }
-	.dynsym			: { *(.dynsym) }
-	.dynstr			: { *(.dynstr) }
-	.gnu.version	: { *(.gnu.version) }
-	.gnu.version_d	: { *(.gnu.version_d) }
-	.gnu.version_r	: { *(.gnu.version_r) }
-	.rel.init		: { *(.rel.init) }
-	.rela.init		: { *(.rela.init) }
-
-	.rel.text		:
-		{
-			*(.rel.text)
-			*(.rel.text.*)
-			*(.rel.gnu.linkonce.t*)
-		}
-
-	.rela.text		:
-		{
-			*(.rela.text)
-			*(.rela.text.*)
-			*(.rela.gnu.linkonce.t*)
-		}
-
-	.rel.fini		: { *(.rel.fini) }
-	.rela.fini		: { *(.rela.fini) }
-
-	.rel.rodata		:
-		{
-			*(.rel.rodata)
-			*(.rel.rodata.*)
-			*(.rel.gnu.linkonce.r*)
-		}
-
-	.rela.rodata	:
-		{
-			*(.rela.rodata)
-			*(.rela.rodata.*)
-			*(.rela.gnu.linkonce.r*)
-		}
-
-	.rel.data		:
-		{
-			*(.rel.data)
-			*(.rel.data.*)
-			*(.rel.gnu.linkonce.d*)
-		}
-
-	.rela.data		:
-		{
-			*(.rela.data)
-			*(.rela.data.*)
-			*(.rela.gnu.linkonce.d*)
-		}
-
-	.rel.ctors		: { *(.rel.ctors) }
-	.rela.ctors		: { *(.rela.ctors) }
-	.rel.dtors		: { *(.rel.dtors) }
-	.rela.dtors		: { *(.rela.dtors) }
-	.rel.got		: { *(.rel.got) }
-	.rela.got		: { *(.rela.got) }
-	.rel.bss		: { *(.rel.bss) }
-	.rela.bss		: { *(.rela.bss) }
-	.rel.plt		: { *(.rel.plt) }
-	.rela.plt		: { *(.rela.plt) }
-
-	.text			:
-	{
-		_stext = . ;
-		*(.vectors)
-		*(.init)
-		*(.handlers)
-		*(.text)
-		*(.text.*)
-		_etext = . ;
-	} > flash
-
-	_eronly = ABSOLUTE(.);
-
-	.data			:
-	{
-		_sdata = ABSOLUTE(.);
-		*(.data .data.*)
-		*(.gnu.linkonce.d.*)
-		CONSTRUCTORS
-		_edata = ABSOLUTE(.);
-	} > sram AT > flash
-
-	.bss			:
-	{
-		_sbss = ABSOLUTE(.);
-		*(.bss .bss.*)
-		*(.gnu.linkonce.b.*)
-		*(COMMON)
-		_ebss = ABSOLUTE(.);
-	} > sram
-
-	/* Global data not cleared after reset.	*/
-
-	.noinit			:
-	{
-		_snoinit = ABSOLUTE(.);
-		*(.noinit*)
-		_enoinit = ABSOLUTE(.);
-	}	> sram
-
-	.eeprom			:
-	{
-		_seeprom = ABSOLUTE(.);
-		*(.eeprom*)
-		_eeeprom = ABSOLUTE(.);
-	}	> eeprom
-
-	/* 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.
-		 Symbols in the DWARF debugging sections are relative to the beginning
-		 of the section so we begin them at 0.	*/
-
-	/* 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) }
-}
diff --git a/nuttx/configs/micropendous3/README.txt b/nuttx/configs/micropendous3/README.txt
index c80cf6be2..1787f7288 100644
--- a/nuttx/configs/micropendous3/README.txt
+++ b/nuttx/configs/micropendous3/README.txt
@@ -528,21 +528,3 @@ Where <subdir> is one of the following:
       24816     978     308   26102    65f6 nuttx
 
     Strings are in SRAM.
-
-  ostest:
-    This configuration directory, performs a simple OS test using
-    apps/examples/ostest. NOTE:  The OS test is quite large.  In order
-    to get it to fit within AVR memory constraints, it will probably be
-    necessary to disable some OS features.
-
-    As currently configured, This example will not fit into FLASH
-    or smaller AT90USB devices (or into the RAM of *any* AT90USB
-    devices).
-
-    FLASH/SRAM Requirements (as of 6/12/2011):
-
-      $ avr-elf-size nuttx
-       text    data   bss       dec    hex  filename
-      67386   15583   10414   93383   16cc7 nuttx
-
-    Strings are in SRAM.
diff --git a/nuttx/configs/micropendous3/ostest/Make.defs b/nuttx/configs/micropendous3/ostest/Make.defs
deleted file mode 100644
index 8a5a1b0e3..000000000
--- a/nuttx/configs/micropendous3/ostest/Make.defs
+++ /dev/null
@@ -1,149 +0,0 @@
-############################################################################
-# configs/micropendous3/ostest/Make.defs
-#
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
-#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in
-#    the documentation and/or other materials provided with the
-#    distribution.
-# 3. Neither the name NuttX nor the names of its contributors may be
-#    used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-#
-############################################################################
-
-include ${TOPDIR}/.config
-
-# Setup for the selected toolchain
-
-ifeq ($(CONFIG_AVR_WINAVR),y)
-  # WinAVR toolchain under Windows/Cygwin
-  CROSSDEV = avr-
-  WINTOOL = y
-  MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=at90usb647
-  LDFLAGS += -nostartfiles -nodefaultlibs
-endif
-
-ifeq ($(CONFIG_AVR_LINUXGCC),y)
-  # GCC toolchain under Linux
-  CROSSDEV = avr-
-  MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=at90usb647
-  LDFLAGS += -nostartfiles -nodefaultlibs
-endif
-
-ifeq ($(CONFIG_AVR_BUILDROOT),y)
-  # NuttX buildroot GCC toolchain under Linux or Cygwin
-  CROSSDEV = avr-elf-
-  MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=at90usb647
-  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 = $(ARCHINCLUDES) -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 =  $(ARCHINCLUDES) -isystem "$(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
-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/micropendous3/ostest/appconfig b/nuttx/configs/micropendous3/ostest/appconfig
deleted file mode 100644
index 7e716e223..000000000
--- a/nuttx/configs/micropendous3/ostest/appconfig
+++ /dev/null
@@ -1,39 +0,0 @@
-############################################################################
-# configs/micropendous3/ostest/appconfig
-#
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
-#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in
-#    the documentation and/or other materials provided with the
-#    distribution.
-# 3. Neither the name NuttX nor the names of its contributors may be
-#    used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-#
-############################################################################
-
-# Path to example in apps/examples containing the user_start entry point
-
-CONFIGURED_APPS += examples/ostest
-
diff --git a/nuttx/configs/micropendous3/ostest/setenv.sh b/nuttx/configs/micropendous3/ostest/setenv.sh
deleted file mode 100755
index fc11ea4c0..000000000
--- a/nuttx/configs/micropendous3/ostest/setenv.sh
+++ /dev/null
@@ -1,63 +0,0 @@
-#!/bin/bash
-# configs/micropendous3/ostest/setenv.sh
-#
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
-#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in
-#    the documentation and/or other materials provided with the
-#    distribution.
-# 3. Neither the name NuttX nor the names of its contributors may be
-#    used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-#
-
-if [ "$_" = "$0" ] ; then
-  echo "You must source this script, not run it!" 1>&2
-  exit 1
-fi
-
-WD=`pwd`
-if [ ! -x "setenv.sh" ]; then
-  echo "This script must be executed from the top-level NuttX build directory"
-  exit 1
-fi
-
-if [ -z "${PATH_ORIG}" ]; then
-  export PATH_ORIG="${PATH}"
-fi
-
-# This the Cygwin path to the location where I installed the WinAVR
-# toolchain under windows.  This is *not* the default install
-# location so you will probably have to edit this.  You will also have
-# to edit this if you install the Linux AVR toolchain as well
-#export TOOLCHAIN_BIN="/cygdrive/c/WinAVR/bin"
-
-# This the Cygwin path to the location where I build the buildroot
-# toolchain.
-export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_avr/staging_dir/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/teensy/README.txt b/nuttx/configs/teensy/README.txt
index 8d828f59f..ad0cd3695 100644
--- a/nuttx/configs/teensy/README.txt
+++ b/nuttx/configs/teensy/README.txt
@@ -142,7 +142,8 @@ Serial Console
   27 (RXD1/INT2) PD2           Pad D2
   28 (TXD1/INT3) PD3           Pad D3
 
-  Plus Vcc and ground.
+  Plus power and ground.  There are numerous ground points and both USB 5V
+  and Vcc are available.
 
 Toolchains
 ^^^^^^^^^^
diff --git a/nuttx/configs/teensy/hello/Make.defs b/nuttx/configs/teensy/hello/Make.defs
index c21703af6..f10525efa 100644
--- a/nuttx/configs/teensy/hello/Make.defs
+++ b/nuttx/configs/teensy/hello/Make.defs
@@ -42,7 +42,7 @@ ifeq ($(CONFIG_AVR_WINAVR),y)
   CROSSDEV = avr-
   WINTOOL = y
   MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=at90usb647
+  ARCHCPUFLAGS = -mmcu=at90usb1286
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -50,7 +50,7 @@ ifeq ($(CONFIG_AVR_LINUXGCC),y)
   # GCC toolchain under Linux
   CROSSDEV = avr-
   MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=at90usb647
+  ARCHCPUFLAGS = -mmcu=at90usb1286
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -58,7 +58,7 @@ ifeq ($(CONFIG_AVR_BUILDROOT),y)
   # NuttX buildroot GCC toolchain under Linux or Cygwin
   CROSSDEV = avr-elf-
   MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=at90usb647
+  ARCHCPUFLAGS = -mmcu=at90usb1286
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
diff --git a/nuttx/configs/teensy/hello/defconfig b/nuttx/configs/teensy/hello/defconfig
index d72630a5c..de820d7fb 100644
--- a/nuttx/configs/teensy/hello/defconfig
+++ b/nuttx/configs/teensy/hello/defconfig
@@ -88,7 +88,7 @@ CONFIG_ARCH_IRQPRIO=n
 CONFIG_ARCH_INTERRUPTSTACK=n
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
-CONFIG_ARCH_LEDS=n
+CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_BUTTONS=n
 CONFIG_ARCH_CALIBRATION=n
 CONFIG_ARCH_DMA=n
diff --git a/nuttx/configs/teensy/include/board.h b/nuttx/configs/teensy/include/board.h
index adc1a5fda..ecaaa91df 100755
--- a/nuttx/configs/teensy/include/board.h
+++ b/nuttx/configs/teensy/include/board.h
@@ -54,15 +54,15 @@
 
 /* LED definitions **********************************************************/
 /* The Teensy++ 2.0 has a single on-board LEDs connected to PortD, Pin 6 */
-
-#define LED_STARTED            0
-#define LED_HEAPALLOCATE       1
-#define LED_IRQSENABLED        2
-#define LED_STACKCREATED       3
-#define LED_INIRQ              4
-#define LED_SIGNAL             5
-#define LED_ASSERTION          6
-#define LED_PANIC              7
+                                     /* ON      OFF                 */
+#define LED_STARTED                0 /* OFF     ON  (never happens) */
+#define LED_HEAPALLOCATE           0 /* OFF     ON  (never happens) */
+#define LED_IRQSENABLED            0 /* OFF     ON  (never happens) */
+#define LED_STACKCREATED           1 /* ON      ON  (never happens) */
+#define LED_INIRQ                  2 /* OFF     NC  (momentary) */
+#define LED_SIGNAL                 2 /* OFF     NC  (momentary) */
+#define LED_ASSERTION              2 /* OFF     NC  (momentary) */
+#define LED_PANIC                  0 /* OFF     ON  (1Hz flashing) */
 
 /* Button definitions *******************************************************/
 /* SW1 = Connects to AT90USBxx RESET pin and is not available to software */
diff --git a/nuttx/configs/amber/ostest/Make.defs b/nuttx/configs/teensy/nsh/Make.defs
index 66902ca38..cab0de17d 100644..100755
--- a/nuttx/configs/amber/ostest/Make.defs
+++ b/nuttx/configs/teensy/nsh/Make.defs
@@ -1,5 +1,5 @@
 ############################################################################
-# configs/amber/ostest/Make.defs
+# configs/teensy/nsh/Make.defs
 #
 #   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -42,7 +42,7 @@ ifeq ($(CONFIG_AVR_WINAVR),y)
   CROSSDEV = avr-
   WINTOOL = y
   MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=atmega128
+  ARCHCPUFLAGS = -mmcu=at90usb1286
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -50,7 +50,7 @@ ifeq ($(CONFIG_AVR_LINUXGCC),y)
   # GCC toolchain under Linux
   CROSSDEV = avr-
   MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=atmega128
+  ARCHCPUFLAGS = -mmcu=at90usb1286
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -58,7 +58,7 @@ ifeq ($(CONFIG_AVR_BUILDROOT),y)
   # NuttX buildroot GCC toolchain under Linux or Cygwin
   CROSSDEV = avr-elf-
   MAXOPTIMIZATION = -O2
-  ARCHCPUFLAGS = -mmcu=atmega128
+  ARCHCPUFLAGS = -mmcu=at90usb1286
   LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 
@@ -69,13 +69,13 @@ ifeq ($(WINTOOL),y)
   MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) -w $(TOPDIR)/include/cxx}"
-  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/ld.script}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/ld.script}"
 else
   # Linux/Cygwin-native toolchain 
   MKDEP = $(TOPDIR)/tools/mkdeps.sh
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
-  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/ld.script
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/ld.script
 endif
 
 CC = $(CROSSDEV)gcc
diff --git a/nuttx/configs/amber/ostest/appconfig b/nuttx/configs/teensy/nsh/appconfig
index cf4df4dc7..c35042b7b 100644
--- a/nuttx/configs/amber/ostest/appconfig
+++ b/nuttx/configs/teensy/nsh/appconfig
@@ -1,5 +1,5 @@
 ############################################################################
-# configs/amber/ostest/appconfig
+# configs/teensy/nsh/appconfig
 #
 #   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -35,5 +35,20 @@
 
 # Path to example in apps/examples containing the user_start entry point
 
-CONFIGURED_APPS += examples/ostest
+CONFIGURED_APPS += examples/nsh
+
+# NSH library
+
+CONFIGURED_APPS += nshlib
+
+# Networking support
+
+ifeq ($(CONFIG_NET),y)
+CONFIGURED_APPS += netutils/uiplib
+CONFIGURED_APPS += netutils/dhcpc
+CONFIGURED_APPS += netutils/resolv
+CONFIGURED_APPS += netutils/tftpc
+CONFIGURED_APPS += netutils/webclient
+endif
+
 
diff --git a/nuttx/configs/micropendous3/ostest/defconfig b/nuttx/configs/teensy/nsh/defconfig
index 52852d5ad..f9bb1927c 100644..100755
--- a/nuttx/configs/micropendous3/ostest/defconfig
+++ b/nuttx/configs/teensy/nsh/defconfig
@@ -1,7 +1,7 @@
 ############################################################################
-# configs/micropendous3/ostest/defconfig
+# configs/teensy/nsh/defconfig
 #
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   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
@@ -76,11 +76,11 @@ CONFIG_ARCH=avr
 CONFIG_ARCH_AVR=y
 CONFIG_ARCH_AT90USB=y
 CONFIG_ARCH_CHIP=at90usb
-CONFIG_ARCH_CHIP_AT90USB647=y
-CONFIG_ARCH_BOARD=micropendous3
-CONFIG_ARCH_BOARD_MICROPENDOUS3=y
+CONFIG_ARCH_CHIP_AT90USB1286=y
+CONFIG_ARCH_BOARD=teensy
+CONFIG_ARCH_BOARD_TEENSY=y
 CONFIG_BOARD_LOOPSPERMSEC=(8*108)
-CONFIG_DRAM_SIZE=(4*1024)
+CONFIG_DRAM_SIZE=(8*1024)
 CONFIG_DRAM_START=0x800100
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
 CONFIG_ARCH_NOINTC=y
@@ -88,7 +88,7 @@ CONFIG_ARCH_IRQPRIO=n
 CONFIG_ARCH_INTERRUPTSTACK=n
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_BOOTLOADER=n
-CONFIG_ARCH_LEDS=n
+CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_BUTTONS=n
 CONFIG_ARCH_CALIBRATION=n
 CONFIG_ARCH_DMA=n
@@ -239,6 +239,9 @@ CONFIG_HAVE_LIBM=n
 # CONFIG_SDCLONE_DISABLE. Disable cloning of all socket
 #   desciptors by task_create() when a new task is started. If
 #   set, all sockets will appear to be closed in the new task.
+# CONFIG_NXFLAT. Enable support for the NXFLAT binary format.
+#  This format will support execution of NuttX binaries located
+#  in a ROMFS filesystem (see examples/nxflat).
 # CONFIG_SCHED_WORKQUEUE.  Create a dedicated "worker" thread to
 #  handle delayed processing from interrupt handlers.  This feature
 #  is required for some drivers but, if there are not complaints,
@@ -262,19 +265,19 @@ CONFIG_HAVE_LIBM=n
 CONFIG_DEBUG=n
 CONFIG_DEBUG_VERBOSE=n
 CONFIG_DEBUG_SYMBOLS=n
-CONFIG_DEBUG_SCHED=n
+CONFIG_DEBUG_USB=n
 CONFIG_MM_REGIONS=1
 CONFIG_ARCH_LOWPUTC=y
 CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_INSTRUMENTATION=n
 CONFIG_TASK_NAME_SIZE=0
-CONFIG_START_YEAR=2011
-CONFIG_START_MONTH=4
-CONFIG_START_DAY=8
+CONFIG_START_YEAR=2010
+CONFIG_START_MONTH=6
+CONFIG_START_DAY=17
 CONFIG_GREGORIAN_TIME=n
 CONFIG_JULIAN_TIME=n
 CONFIG_DEV_CONSOLE=y
-CONFIG_DEV_LOWCONSOLE=y
+CONFIG_DEV_LOWCONSOLE=n
 CONFIG_MUTEX_TYPES=n
 CONFIG_PRIORITY_INHERITANCE=n
 CONFIG_SEM_PREALLOCHOLDERS=0
@@ -289,7 +292,8 @@ CONFIG_SCHED_WORKSTACKSIZE=1024
 CONFIG_SIG_SIGWORK=4
 
 #
-# Settings for nxflat
+# 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).
@@ -320,12 +324,12 @@ CONFIG_SYMTAB_ORDEREDBYNAME=y
 #   up waiting tasks.
 #
 CONFIG_DISABLE_CLOCK=n
-CONFIG_DISABLE_POSIX_TIMERS=n
-CONFIG_DISABLE_PTHREAD=n
+CONFIG_DISABLE_POSIX_TIMERS=y
+CONFIG_DISABLE_PTHREAD=y
 CONFIG_DISABLE_SIGNALS=n
-CONFIG_DISABLE_MQUEUE=n
+CONFIG_DISABLE_MQUEUE=y
 CONFIG_DISABLE_MOUNTPOINT=y
-CONFIG_DISABLE_ENVIRON=y
+CONFIG_DISABLE_ENVIRON=n
 CONFIG_DISABLE_POLL=y
 
 #
@@ -334,7 +338,7 @@ CONFIG_DISABLE_POLL=y
 # CONFIG_NOPRINTF_FIELDWIDTH - sprintf-related logic is a
 #   little smaller if we do not support fieldwidthes
 #
-CONFIG_NOPRINTF_FIELDWIDTH=n
+CONFIG_NOPRINTF_FIELDWIDTH=y
 
 #
 # Allow for architecture optimized implementations
@@ -388,19 +392,19 @@ CONFIG_ARCH_BZERO=n
 #   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_MAX_TASKS=8
+CONFIG_MAX_TASK_ARGS=2
+CONFIG_NPTHREAD_KEYS=0
+CONFIG_NFILE_DESCRIPTORS=6
+CONFIG_NFILE_STREAMS=6
 CONFIG_NAME_MAX=32
-CONFIG_STDIO_BUFFER_SIZE=256
-CONFIG_NUNGET_CHARS=2
-CONFIG_PREALLOC_MQ_MSGS=4
-CONFIG_MQ_MAXMSGSIZE=32
+CONFIG_STDIO_BUFFER_SIZE=0
+CONFIG_NUNGET_CHARS=0
+CONFIG_PREALLOC_MQ_MSGS=0
+CONFIG_MQ_MAXMSGSIZE=0
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_PREALLOC_WDOGS=4
-CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_TIMERS=0
 
 #
 # Filesystem configuration
@@ -479,17 +483,19 @@ CONFIG_MMCSD_HAVECARDDETECT=n
 #
 CONFIG_NET=n
 CONFIG_NET_IPv6=n
-CONFIG_NSOCKET_DESCRIPTORS=0
+CONFIG_NSOCKET_DESCRIPTORS=8
 CONFIG_NET_SOCKOPTS=y
-CONFIG_NET_BUFSIZE=420
+CONFIG_NET_BUFSIZE=562
 CONFIG_NET_TCP=n
-CONFIG_NET_TCP_CONNS=40
-CONFIG_NET_MAX_LISTENPORTS=40
+CONFIG_NET_TCP_CONNS=8
+CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
+CONFIG_NET_TCPBACKLOG=n
+CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_UDP=n
 CONFIG_NET_UDP_CHECKSUMS=y
-#CONFIG_NET_UDP_CONNS=10
+#CONFIG_NET_UDP_CONNS=8
 CONFIG_NET_ICMP=n
-CONFIG_NET_ICMP_PING=n
+CONFIG_NET_ICMP_PING=y
 #CONFIG_NET_PINGADDRCONF=0
 CONFIG_NET_STATISTICS=y
 #CONFIG_NET_RECEIVE_WINDOW=
@@ -534,6 +540,29 @@ CONFIG_USBDEV_TRACE=n
 CONFIG_USBDEV_TRACE_NRECORDS=128
 
 #
+# USB Host Configuration
+#
+# CONFIG_USBHOST
+#   Enables USB host support
+# CONFIG_USBHOST_NPREALLOC
+#   Number of pre-allocated class instances
+# CONFIG_USBHOST_BULK_DISABLE
+#   On some architectures, selecting this setting will reduce driver size
+#   by disabling bulk endpoint support
+# CONFIG_USBHOST_INT_DISABLE
+#   On some architectures, selecting this setting will reduce driver size
+#   by disabling interrupt endpoint support
+# CONFIG_USBHOST_ISOC_DISABLE
+#   On some architectures, selecting this setting will reduce driver size
+#   by disabling isochronous endpoint support
+#
+CONFIG_USBHOST=n
+CONFIG_USBHOST_NPREALLOC=0
+CONFIG_USBHOST_BULK_DISABLE=n
+CONFIG_USBHOST_INT_DISABLE=y
+CONFIG_USBHOST_ISOC_DISABLE=y
+
+#
 # USB Serial Device Configuration
 #
 # CONFIG_USBSER
@@ -617,7 +646,6 @@ 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
@@ -634,16 +662,16 @@ CONFIG_EXAMPLE_UIP_DHCPC=n
 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)
+CONFIG_EXAMPLE_NETTEST_IPADDR=(10L<<24|0L<<16|0L<<8|2L)
+CONFIG_EXAMPLE_NETTEST_DRIPADDR=(10L<<24|0L<<16|0L<<8|1L)
+CONFIG_EXAMPLE_NETTEST_NETMASK=(255L<<24|255L<<16|255L<<8|0L)
+CONFIG_EXAMPLE_NETTEST_CLIENTIP=(10L<<24|0L<<16|0L<<8|1L)
 
 #
 # Settings for examples/ostest
 #
 CONFIG_EXAMPLES_OSTEST_LOOPS=1
-CONFIG_EXAMPLES_OSTEST_STACKSIZE=2048
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=512
 CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
 
 #
@@ -683,9 +711,9 @@ CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
 CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_STRERROR=n
 CONFIG_NSH_LINELEN=64
-CONFIG_NSH_STACKSIZE=2048
+CONFIG_NSH_STACKSIZE=512
 CONFIG_NSH_NESTDEPTH=3
-CONFIG_NSH_DISABLESCRIPT=n
+CONFIG_NSH_DISABLESCRIPT=y
 CONFIG_NSH_DISABLEBG=n
 CONFIG_NSH_ROMFSETC=n
 CONFIG_NSH_CONSOLE=y
@@ -693,7 +721,7 @@ CONFIG_NSH_TELNET=n
 CONFIG_NSH_ARCHINIT=n
 CONFIG_NSH_IOBUFFER_SIZE=512
 CONFIG_NSH_DHCPC=n
-CONFIG_NSH_NOMAC=n
+CONFIG_NSH_NOMAC=y
 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)
@@ -737,50 +765,6 @@ CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER=n
 CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS=n
 
 #
-# Settings for examples/usbstorage
-#
-# CONFIG_EXAMPLES_USBSTRG_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_USBSTRG_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_USBSTRG_DEVPATH1
-#    The full path to the registered block driver.  Default is "/dev/mmcsd0"
-#  CONFIG_EXAMPLES_USBSTRG_DEVMINOR2 and CONFIG_EXAMPLES_USBSTRG_DEVPATH2
-#    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBSTRG_NLUNS
-#    is 2 or 3.  No defaults.
-#  CONFIG_EXAMPLES_USBSTRG_DEVMINOR3 and CONFIG_EXAMPLES_USBSTRG_DEVPATH3
-#    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBSTRG_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_USBSTRG_TRACEINIT
-#    Show initialization events
-#  CONFIG_EXAMPLES_USBSTRG_TRACECLASS
-#    Show class driver events
-#  CONFIG_EXAMPLES_USBSTRG_TRACETRANSFERS
-#    Show data transfer events
-#  CONFIG_EXAMPLES_USBSTRG_TRACECONTROLLER
-#    Show controller events
-#  CONFIG_EXAMPLES_USBSTRG_TRACEINTERRUPTS
-#    Show interrupt-related events.
-#
-CONFIG_EXAMPLES_USBSTRG_NLUNS=1
-CONFIG_EXAMPLES_USBSTRG_DEVMINOR1=0
-CONFIG_EXAMPLES_USBSTRG_DEVPATH1="/dev/mmcsd0"
-CONFIG_EXAMPLES_USBSTRG_TRACEINIT=n
-CONFIG_EXAMPLES_USBSTRG_TRACECLASS=n
-CONFIG_EXAMPLES_USBSTRG_TRACETRANSFERS=n
-CONFIG_EXAMPLES_USBSTRG_TRACECONTROLLER=n
-CONFIG_EXAMPLES_USBSTRG_TRACEINTERRUPTS=n
-
-#
 # Stack and heap information
 #
 # CONFIG_BOOT_RUNFROMFLASH - Some configurations support XIP
@@ -807,9 +791,9 @@ CONFIG_BOOT_RUNFROMFLASH=n
 CONFIG_BOOT_COPYTORAM=n
 CONFIG_CUSTOM_STACK=n
 CONFIG_STACK_POINTER=
-CONFIG_IDLETHREAD_STACKSIZE=1024
-CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_IDLETHREAD_STACKSIZE=512
+CONFIG_USERMAIN_STACKSIZE=512
 CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=2048
+CONFIG_PTHREAD_STACK_DEFAULT=512
 CONFIG_HEAP_BASE=
 CONFIG_HEAP_SIZE=
diff --git a/nuttx/configs/micropendous3/ostest/ld.script b/nuttx/configs/teensy/nsh/ld.script
index fa9758092..dce4d499f 100644..100755
--- a/nuttx/configs/micropendous3/ostest/ld.script
+++ b/nuttx/configs/teensy/nsh/ld.script
@@ -1,5 +1,5 @@
 /**************************************************************************************
- * configs/micropendous3/ostest/ld.script
+ * configs/teensy/teensy/ld.script
  *
  *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -38,8 +38,7 @@
  *                FLASH        | REGISTERS I/O       EXT I/O    ISRAM      | EEPROM
  *                             |           REGISTERS REGISTERS             |
  * -------------- ------ ------+------- -- ------ -- ------ --- ------ ----+------- ---
- * AT90USB646/7   0x0000  64Kb | 0x0000 32 0x0020 64 0x0060 160 0x0100 4Kb | 0x0000 2Kb
- * AT90USB1286/7  0x0000 128Kb | 0x0000 32 0x0020 64 0x0060 160 0x0100 8Kb | 0x0000 4Kb
+ * AT90USB1286    0x0000 128Kb | 0x0000 32 0x0020 64 0x0060 160 0x0100 8Kb | 0x0000 4Kb
  * -------------- ------ ------+------- -- ------ -- ------ --- ------ ----+------- ---
  */
 
diff --git a/nuttx/configs/amber/ostest/setenv.sh b/nuttx/configs/teensy/nsh/setenv.sh
index 18d6b4ab5..fd0d1675c 100755
--- a/nuttx/configs/amber/ostest/setenv.sh
+++ b/nuttx/configs/teensy/nsh/setenv.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# configs/amber/ostest/setenv.sh
+# configs/teensy/teensy/setenv.sh
 #
 #   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
diff --git a/nuttx/configs/teensy/src/up_leds.c b/nuttx/configs/teensy/src/up_leds.c
new file mode 100755
index 000000000..9ca1499f0
--- /dev/null
+++ b/nuttx/configs/teensy/src/up_leds.c
@@ -0,0 +1,194 @@
+/****************************************************************************
+ * configs/teensy/src/up_leds.c
+ * arch/arm/src/board/up_leds.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <debug.h>
+#include <avr/io.h>
+
+#include "up_arch.h"
+#include "up_internal.h"
+
+#include "at90usb_internal.h"
+#include "teensy_internal.h"
+
+#ifdef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG with
+ * CONFIG_DEBUG_VERBOSE too)
+ */
+
+#undef LED_DEBUG   /* Define to enable debug */
+#undef LED_VERBOSE /* Define to enable verbose debug */
+
+#ifdef LED_DEBUG
+#  define leddbg  lldbg
+#  ifdef LED_VERBOSE
+#    define ledvdbg lldbg
+#  else
+#    define ledvdbg(x...)
+#  endif
+#else
+#  undef LED_VERBOSE
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static bool g_ncoff;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: at90usb_ledinit
+ ****************************************************************************/
+
+void at90usb_ledinit(void)
+{
+  /* The Teensy's single LED is on Port D, Pin 6.  Configur this pin as an
+   * output and turn it OFF.  The "other" side of the LED is onnected to
+   * ground through a resistor.  Therefore, a logic value of 0 should turn
+   * the LED off.
+   */
+
+  DDRD   |= (1 << 6);
+  PORTD  &= ~(1 << 6);
+  g_ncoff = true;
+}
+
+/****************************************************************************
+ * Name: up_ledon
+ ****************************************************************************/
+
+void up_ledon(int led)
+{
+ /*                         ON      OFF
+  * LED_STARTED        0    OFF     ON  (never happens)
+  * LED_HEAPALLOCATE   0    OFF     ON  (never happens)
+  * LED_IRQSENABLED    0    OFF     ON  (never happens)
+  * LED_STACKCREATED   1    ON      ON  (never happens)
+  * LED_INIRQ          2    OFF     NC  (momentary)
+  * LED_SIGNAL         2    OFF     NC  (momentary)
+  * LED_ASSERTION      2    OFF     NC  (momentary)
+  * LED_PANIC          0    OFF     ON  (1Hz flashing)
+  */
+
+  switch (led)
+    {
+	case 0:
+      /* The steady state is OFF */
+
+      g_ncoff = true;
+
+    case 2:
+      /* Turn the LED off */
+
+      PORTD &= ~(1 << 6);
+	  break;
+
+	case 1:
+      /* Turn the LED on */
+
+      PORTD |= (1 << 6);
+      g_ncoff = false;
+	  break;
+
+	default:
+	  return;
+	}
+}
+
+/****************************************************************************
+ * Name: up_ledoff
+ ****************************************************************************/
+
+void up_ledoff(int led)
+{
+ /*                         ON      OFF
+  * LED_STARTED        0    OFF     ON  (never happens)
+  * LED_HEAPALLOCATE   0    OFF     ON  (never happens)
+  * LED_IRQSENABLED    0    OFF     ON  (never happens)
+  * LED_STACKCREATED   1    ON      ON  (never happens)
+  * LED_INIRQ          2    OFF     NC  (momentary)
+  * LED_SIGNAL         2    OFF     NC  (momentary)
+  * LED_ASSERTION      2    OFF     NC  (momentary)
+  * LED_PANIC          0    OFF     ON  (1Hz flashing)
+  */
+
+  switch (led)
+    {
+	case 2:
+      /* If the "no-change" state is OFF, then turn the LED off */
+
+      if (g_ncoff)
+        {
+          PORTD &= ~(1 << 6);
+          break;
+        }
+
+	  /* Otherwise, fall through to turn the LED ON */
+
+	case 0:
+	case 1:
+      /* Turn the LED on */
+
+      PORTD |= (1 << 6);
+	  break;
+
+	default:
+	  return;
+	}
+}
+
+#endif /* CONFIG_ARCH_LEDS */