Merge branch 'master' of git@ettus.sourcerepo.com:ettus/uhd into rfx

30 files changed, 1969 insertions, 394 deletions

diff --git a/host/CMakeLists.txt b/host/CMakeLists.txt
index 05d782abe..d2889fe58 100644
--- a/host/CMakeLists.txt
+++ b/host/CMakeLists.txt
@@ -36,6 +36,7 @@ SET(RUNTIME_DIR bin)
 SET(LIBRARY_DIR lib)
 SET(INCLUDE_DIR include)
 SET(PKG_DATA_DIR share/uhd)
+SET(PKG_DOC_DIR share/doc/uhd)
 MESSAGE(STATUS "Using install prefix: ${CMAKE_INSTALL_PREFIX}")
 
 ########################################################################
@@ -101,23 +102,21 @@ ENDIF(HAVE_BIG_ENDIAN)
 # Create Uninstall Target
 ########################################################################
 CONFIGURE_FILE(
-    "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
-    "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
-    @ONLY
-)
+    ${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
+@ONLY)
 
 ADD_CUSTOM_TARGET(uninstall
-  "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+  ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
 )
 
 ########################################################################
 # Create Pkg Config File
 ########################################################################
 CONFIGURE_FILE(
-    "${CMAKE_SOURCE_DIR}/uhd.pc.in"
-    "${CMAKE_CURRENT_BINARY_DIR}/uhd.pc"
-    @ONLY
-)
+    ${CMAKE_SOURCE_DIR}/uhd.pc.in
+    ${CMAKE_CURRENT_BINARY_DIR}/uhd.pc
+@ONLY)
 
 INSTALL(
     FILES ${CMAKE_CURRENT_BINARY_DIR}/uhd.pc
@@ -125,6 +124,31 @@ INSTALL(
 )
 
 ########################################################################
+# Setup Docs
+########################################################################
+INCLUDE(FindDoxygen)
+
+IF(DOXYGEN_FOUND)
+    SET(CMAKE_CURRENT_BINARY_DIR_DOXYGEN ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
+    CONFIGURE_FILE(
+        ${CMAKE_SOURCE_DIR}/Doxyfile.in
+        ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+    @ONLY)
+    ADD_CUSTOM_COMMAND(OUTPUT ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN}
+        COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+        COMMENT "Generating documentation with doxygen"
+    )
+    ADD_CUSTOM_TARGET(docs ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN})
+    INSTALL(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN} DESTINATION ${PKG_DOC_DIR})
+ENDIF(DOXYGEN_FOUND)
+
+INSTALL(FILES
+    ${CMAKE_SOURCE_DIR}/README
+    ${CMAKE_SOURCE_DIR}/LICENSE
+    DESTINATION ${PKG_DOC_DIR}
+)
+
+########################################################################
 # Add the subdirectories
 ########################################################################
 ADD_SUBDIRECTORY(examples)
diff --git a/host/Doxyfile.in b/host/Doxyfile.in
new file mode 100644
index 000000000..7395516b5
--- /dev/null
+++ b/host/Doxyfile.in
@@ -0,0 +1,1514 @@
+# Doxyfile 1.6.1
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project
+#
+# All text after a hash (#) is considered a comment and will be ignored
+# The format is:
+#       TAG = value [value, ...]
+# For lists items can also be appended using:
+#       TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (" ")
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# This tag specifies the encoding used for all characters in the config file
+# that follow. The default is UTF-8 which is also the encoding used for all
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the
+# iconv built into libc) for the transcoding. See
+# http://www.gnu.org/software/libiconv for the list of possible encodings.
+
+DOXYFILE_ENCODING      = UTF-8
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded
+# by quotes) that should identify the project.
+
+PROJECT_NAME           = @CPACK_PACKAGE_NAME@
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number.
+# This could be handy for archiving the generated documentation or
+# if some version control system is used.
+
+PROJECT_NUMBER         = @CPACK_PACKAGE_VERSION@
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
+# base path where the generated documentation will be put.
+# If a relative path is entered, it will be relative to the location
+# where doxygen was started. If left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = @CMAKE_CURRENT_BINARY_DIR_DOXYGEN@
+
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
+# 4096 sub-directories (in 2 levels) under the output directory of each output
+# format and will distribute the generated files over these directories.
+# Enabling this option can be useful when feeding doxygen a huge amount of
+# source files, where putting all generated files in the same directory would
+# otherwise cause performance problems for the file system.
+
+CREATE_SUBDIRS         = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# The default language is English, other supported languages are:
+# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional,
+# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German,
+# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English
+# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian,
+# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrilic, Slovak,
+# Slovene, Spanish, Swedish, Ukrainian, and Vietnamese.
+
+OUTPUT_LANGUAGE        = English
+
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
+# include brief member descriptions after the members that are listed in
+# the file and class documentation (similar to JavaDoc).
+# Set to NO to disable this.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend
+# the brief description of a member or function before the detailed description.
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
+# brief descriptions will be completely suppressed.
+
+REPEAT_BRIEF           = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator
+# that is used to form the text in various listings. Each string
+# in this list, if found as the leading text of the brief description, will be
+# stripped from the text and the result after processing the whole list, is
+# used as the annotated text. Otherwise, the brief description is used as-is.
+# If left blank, the following values are used ("$name" is automatically
+# replaced with the name of the entity): "The $name class" "The $name widget"
+# "The $name file" "is" "provides" "specifies" "contains"
+# "represents" "a" "an" "the"
+
+ABBREVIATE_BRIEF       =
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# Doxygen will generate a detailed section even if there is only a brief
+# description.
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
+# operators of the base classes will not be shown.
+
+INLINE_INHERITED_MEMB  = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full
+# path before files name in the file list and in the header files. If set
+# to NO the shortest path that makes the file name unique will be used.
+
+FULL_PATH_NAMES        = YES
+
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag
+# can be used to strip a user-defined part of the path. Stripping is
+# only done if one of the specified strings matches the left-hand part of
+# the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the
+# path to strip.
+
+STRIP_FROM_PATH        = @CMAKE_SOURCE_DIR@
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
+# the path mentioned in the documentation of a class, which tells
+# the reader which header file to include in order to use a class.
+# If left blank only the name of the header file containing the class
+# definition is used. Otherwise one should specify the include paths that
+# are normally passed to the compiler using the -I flag.
+
+STRIP_FROM_INC_PATH    =
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter
+# (but less readable) file names. This can be useful is your file systems
+# doesn't support long names like on DOS, Mac, or CD-ROM.
+
+SHORT_NAMES            = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen
+# will interpret the first line (until the first dot) of a JavaDoc-style
+# comment as the brief description. If set to NO, the JavaDoc
+# comments will behave just like regular Qt-style comments
+# (thus requiring an explicit @brief command for a brief description.)
+
+JAVADOC_AUTOBRIEF      = NO
+
+# If the QT_AUTOBRIEF tag is set to YES then Doxygen will
+# interpret the first line (until the first dot) of a Qt-style
+# comment as the brief description. If set to NO, the comments
+# will behave just like regular Qt-style comments (thus requiring
+# an explicit \brief command for a brief description.)
+
+QT_AUTOBRIEF           = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
+# treat a multi-line C++ special comment block (i.e. a block of //! or ///
+# comments) as a brief description. This used to be the default behaviour.
+# The new default is to treat a multi-line C++ comment block as a detailed
+# description. Set this tag to YES if you prefer the old behaviour instead.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented
+# member inherits the documentation from any documented member that it
+# re-implements.
+
+INHERIT_DOCS           = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce
+# a new page for each member. If set to NO, the documentation of a member will
+# be part of the file/class/namespace that contains it.
+
+SEPARATE_MEMBER_PAGES  = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab.
+# Doxygen uses this value to replace tabs by spaces in code fragments.
+
+TAB_SIZE               = 8
+
+# This tag can be used to specify a number of aliases that acts
+# as commands in the documentation. An alias has the form "name=value".
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to
+# put the command \sideeffect (or @sideeffect) in the documentation, which
+# will result in a user-defined paragraph with heading "Side Effects:".
+# You can put \n's in the value part of an alias to insert newlines.
+
+ALIASES                =
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
+# sources only. Doxygen will then generate output that is more tailored for C.
+# For instance, some of the names that are used will be different. The list
+# of all members will be omitted, etc.
+
+OPTIMIZE_OUTPUT_FOR_C  = NO
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java
+# sources only. Doxygen will then generate output that is more tailored for
+# Java. For instance, namespaces will be presented as packages, qualified
+# scopes will look different, etc.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
+# sources only. Doxygen will then generate output that is more tailored for
+# Fortran.
+
+OPTIMIZE_FOR_FORTRAN   = NO
+
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
+# sources. Doxygen will then generate output that is tailored for
+# VHDL.
+
+OPTIMIZE_OUTPUT_VHDL   = NO
+
+# Doxygen selects the parser to use depending on the extension of the files it parses.
+# With this tag you can assign which parser to use for a given extension.
+# Doxygen has a built-in mapping, but you can override or extend it using this tag.
+# The format is ext=language, where ext is a file extension, and language is one of
+# the parsers supported by doxygen: IDL, Java, Javascript, C#, C, C++, D, PHP,
+# Objective-C, Python, Fortran, VHDL, C, C++. For instance to make doxygen treat
+# .inc files as Fortran files (default is PHP), and .f files as C (default is Fortran),
+# use: inc=Fortran f=C. Note that for custom extensions you also need to set FILE_PATTERNS otherwise the files are not read by doxygen.
+
+EXTENSION_MAPPING      =
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
+# to include (a tag file for) the STL sources as input, then you should
+# set this tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string); v.s.
+# func(std::string) {}). This also make the inheritance and collaboration
+# diagrams that involve STL classes more complete and accurate.
+
+BUILTIN_STL_SUPPORT    = YES
+
+# If you use Microsoft's C++/CLI language, you should set this option to YES to
+# enable parsing support.
+
+CPP_CLI_SUPPORT        = NO
+
+# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only.
+# Doxygen will parse them like normal C++ but will assume all classes use public
+# instead of private inheritance when no explicit protection keyword is present.
+
+SIP_SUPPORT            = NO
+
+# For Microsoft's IDL there are propget and propput attributes to indicate getter
+# and setter methods for a property. Setting this option to YES (the default)
+# will make doxygen to replace the get and set methods by a property in the
+# documentation. This will only work if the methods are indeed getting or
+# setting a simple type. If this is not the case, or you want to show the
+# methods anyway, you should set this option to NO.
+
+IDL_PROPERTY_SUPPORT   = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES, then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# Set the SUBGROUPING tag to YES (the default) to allow class member groups of
+# the same type (for instance a group of public functions) to be put as a
+# subgroup of that type (e.g. under the Public Functions section). Set it to
+# NO to prevent subgrouping. Alternatively, this can be done per class using
+# the \nosubgrouping command.
+
+SUBGROUPING            = YES
+
+# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum
+# is documented as struct, union, or enum with the name of the typedef. So
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
+# with name TypeT. When disabled the typedef will appear as a member of a file,
+# namespace, or class. And the struct will be named TypeS. This can typically
+# be useful for C code in case the coding convention dictates that all compound
+# types are typedef'ed and only the typedef is referenced, never the tag name.
+
+TYPEDEF_HIDES_STRUCT   = NO
+
+# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to
+# determine which symbols to keep in memory and which to flush to disk.
+# When the cache is full, less often used symbols will be written to disk.
+# For small to medium size projects (<1000 input files) the default value is
+# probably good enough. For larger projects a too small cache size can cause
+# doxygen to be busy swapping symbols to and from disk most of the time
+# causing a significant performance penality.
+# If the system has enough physical memory increasing the cache will improve the
+# performance by keeping more symbols in memory. Note that the value works on
+# a logarithmic scale so increasing the size by one will rougly double the
+# memory usage. The cache size is given by this formula:
+# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0,
+# corresponding to a cache size of 2^16 = 65536 symbols
+
+SYMBOL_CACHE_SIZE      = 0
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
+# documentation are documented, even if no documentation was available.
+# Private class members and static file members will be hidden unless
+# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
+
+EXTRACT_ALL            = YES
+
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class
+# will be included in the documentation.
+
+EXTRACT_PRIVATE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES all static members of a file
+# will be included in the documentation.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs)
+# defined locally in source files will be included in the documentation.
+# If set to NO only classes defined in header files are included.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# This flag is only useful for Objective-C code. When set to YES local
+# methods, which are defined in the implementation section but not in
+# the interface are included in the documentation.
+# If set to NO (the default) only methods in the interface are included.
+
+EXTRACT_LOCAL_METHODS  = NO
+
+# If this flag is set to YES, the members of anonymous namespaces will be
+# extracted and appear in the documentation as a namespace called
+# 'anonymous_namespace{file}', where file will be replaced with the base
+# name of the file that contains the anonymous namespace. By default
+# anonymous namespace are hidden.
+
+EXTRACT_ANON_NSPACES   = NO
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all
+# undocumented members of documented classes, files or namespaces.
+# If set to NO (the default) these members will be included in the
+# various overviews, but no documentation section is generated.
+# This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_MEMBERS     = NO
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy.
+# If set to NO (the default) these classes will be included in the various
+# overviews. This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_CLASSES     = NO
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all
+# friend (class|struct|union) declarations.
+# If set to NO (the default) these declarations will be included in the
+# documentation.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any
+# documentation blocks found inside the body of a function.
+# If set to NO (the default) these blocks will be appended to the
+# function's detailed documentation block.
+
+HIDE_IN_BODY_DOCS      = NO
+
+# The INTERNAL_DOCS tag determines if documentation
+# that is typed after a \internal command is included. If the tag is set
+# to NO (the default) then the documentation will be excluded.
+# Set it to YES to include the internal documentation.
+
+INTERNAL_DOCS          = NO
+
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate
+# file names in lower-case letters. If set to YES upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
+# and Mac users are advised to set this option to NO.
+
+CASE_SENSE_NAMES       = YES
+
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen
+# will show members with their full class and namespace scopes in the
+# documentation. If set to YES the scope will be hidden.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen
+# will put a list of the files that are included by a file in the documentation
+# of that file.
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline]
+# is inserted in the documentation for inline members.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen
+# will sort the (detailed) documentation of file and class members
+# alphabetically by member name. If set to NO the members will appear in
+# declaration order.
+
+SORT_MEMBER_DOCS       = YES
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
+# brief documentation of file, namespace and class members alphabetically
+# by member name. If set to NO (the default) the members will appear in
+# declaration order.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the (brief and detailed) documentation of class members so that constructors and destructors are listed first. If set to NO (the default) the constructors will appear in the respective orders defined by SORT_MEMBER_DOCS and SORT_BRIEF_DOCS. This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO and ignored for detailed docs if SORT_MEMBER_DOCS is set to NO.
+
+SORT_MEMBERS_CTORS_1ST = NO
+
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the
+# hierarchy of group names into alphabetical order. If set to NO (the default)
+# the group names will appear in their defined order.
+
+SORT_GROUP_NAMES       = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
+# sorted by fully-qualified names, including namespaces. If set to
+# NO (the default), the class list will be sorted only by class name,
+# not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the
+# alphabetical list.
+
+SORT_BY_SCOPE_NAME     = NO
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or
+# disable (NO) the todo list. This list is created by putting \todo
+# commands in the documentation.
+
+GENERATE_TODOLIST      = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or
+# disable (NO) the test list. This list is created by putting \test
+# commands in the documentation.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or
+# disable (NO) the bug list. This list is created by putting \bug
+# commands in the documentation.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or
+# disable (NO) the deprecated list. This list is created by putting
+# \deprecated commands in the documentation.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional
+# documentation sections, marked by \if sectionname ... \endif.
+
+ENABLED_SECTIONS       =
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines
+# the initial value of a variable or define consists of for it to appear in
+# the documentation. If the initializer consists of more lines than specified
+# here it will be hidden. Use a value of 0 to hide initializers completely.
+# The appearance of the initializer of individual variables and defines in the
+# documentation can be controlled using \showinitializer or \hideinitializer
+# command in the documentation regardless of this setting.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated
+# at the bottom of the documentation of classes and structs. If set to YES the
+# list will mention the files that were used to generate the documentation.
+
+SHOW_USED_FILES        = YES
+
+# If the sources in your project are distributed over multiple directories
+# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy
+# in the documentation. The default is NO.
+
+SHOW_DIRECTORIES       = NO
+
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page.
+# This will remove the Files entry from the Quick Index and from the
+# Folder Tree View (if specified). The default is YES.
+
+SHOW_FILES             = YES
+
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the
+# Namespaces page.
+# This will remove the Namespaces entry from the Quick Index
+# and from the Folder Tree View (if specified). The default is YES.
+
+SHOW_NAMESPACES        = YES
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from
+# the version control system). Doxygen will invoke the program by executing (via
+# popen()) the command <command> <input-file>, where <command> is the value of
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file
+# provided by doxygen. Whatever the program writes to standard output
+# is used as the file version. See the manual for examples.
+
+FILE_VERSION_FILTER    =
+
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed by
+# doxygen. The layout file controls the global structure of the generated output files
+# in an output format independent way. The create the layout file that represents
+# doxygen's defaults, run doxygen with the -l option. You can optionally specify a
+# file name after the option, if omitted DoxygenLayout.xml will be used as the name
+# of the layout file.
+
+LAYOUT_FILE            =
+
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated
+# by doxygen. Possible values are YES and NO. If left blank NO is used.
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated by doxygen. Possible values are YES and NO. If left blank
+# NO is used.
+
+WARNINGS               = YES
+
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will
+# automatically be disabled.
+
+WARN_IF_UNDOCUMENTED   = YES
+
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some
+# parameters in a documented function, or documenting parameters that
+# don't exist or using markup commands wrongly.
+
+WARN_IF_DOC_ERROR      = YES
+
+# This WARN_NO_PARAMDOC option can be abled to get warnings for
+# functions that are documented, but have no documentation for their parameters
+# or return value. If set to NO (the default) doxygen will only warn about
+# wrong or incomplete parameter documentation, but not about the absence of
+# documentation.
+
+WARN_NO_PARAMDOC       = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that
+# doxygen can produce. The string should contain the $file, $line, and $text
+# tags, which will be replaced by the file and line number from which the
+# warning originated and the warning text. Optionally the format may contain
+# $version, which will be replaced by the version of the file (if it could
+# be obtained via FILE_VERSION_FILTER)
+
+WARN_FORMAT            = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning
+# and error messages should be written. If left blank the output is written
+# to stderr.
+
+WARN_LOGFILE           =
+
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag can be used to specify the files and/or directories that contain
+# documented source files. You may enter file names like "myfile.cpp" or
+# directories like "/usr/src/myproject". Separate the files or directories
+# with spaces.
+
+INPUT                  = @CMAKE_SOURCE_DIR@/include
+
+# This tag can be used to specify the character encoding of the source files
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
+# also the default input encoding. Doxygen uses libiconv (or the iconv built
+# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for
+# the list of possible encodings.
+
+INPUT_ENCODING         = UTF-8
+
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank the following patterns are tested:
+# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx
+# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py *.f90
+
+FILE_PATTERNS          = *.hpp
+
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories
+# should be searched for input files as well. Possible values are YES and NO.
+# If left blank NO is used.
+
+RECURSIVE              = YES
+
+# The EXCLUDE tag can be used to specify files and/or directories that should
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+
+EXCLUDE                =
+
+# The EXCLUDE_SYMLINKS tag can be used select whether or not files or
+# directories that are symbolic links (a Unix filesystem feature) are excluded
+# from the input.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories. Note that the wildcards are matched
+# against the file with absolute path, so to exclude all test directories
+# for example use the pattern */test/*
+
+EXCLUDE_PATTERNS       =
+
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
+# (namespaces, classes, functions, etc.) that should be excluded from the
+# output. The symbol name can be a fully qualified name, a word, or if the
+# wildcard * is used, a substring. Examples: ANamespace, AClass,
+# AClass::ANamespace, ANamespace::*Test
+
+EXCLUDE_SYMBOLS        =
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or
+# directories that contain example code fragments that are included (see
+# the \include command).
+
+EXAMPLE_PATH           =
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank all files are included.
+
+EXAMPLE_PATTERNS       =
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude
+# commands irrespective of the value of the RECURSIVE tag.
+# Possible values are YES and NO. If left blank NO is used.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or
+# directories that contain image that are included in the documentation (see
+# the \image command).
+
+IMAGE_PATH             =
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command <filter> <input-file>, where <filter>
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an
+# input file. Doxygen will then use the output that the filter program writes
+# to standard output.
+# If FILTER_PATTERNS is specified, this tag will be
+# ignored.
+
+INPUT_FILTER           =
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis.
+# Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match.
+# The filters are a list of the form:
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further
+# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER
+# is applied to all files.
+
+FILTER_PATTERNS        =
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will be used to filter the input files when producing source
+# files to browse (i.e. when SOURCE_BROWSER is set to YES).
+
+FILTER_SOURCE_FILES    = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will
+# be generated. Documented entities will be cross-referenced with these sources.
+# Note: To get rid of all source code in the generated output, make sure also
+# VERBATIM_HEADERS is set to NO.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body
+# of functions and classes directly in the documentation.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct
+# doxygen to hide any special comment blocks from generated source code
+# fragments. Normal C and C++ comments will always remain visible.
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES
+# then for each documented function all documented
+# functions referencing it will be listed.
+
+REFERENCED_BY_RELATION = NO
+
+# If the REFERENCES_RELATION tag is set to YES
+# then for each documented function all documented entities
+# called/used by that function will be listed.
+
+REFERENCES_RELATION    = NO
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES (the default)
+# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from
+# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will
+# link to the source code.
+# Otherwise they will link to the documentation.
+
+REFERENCES_LINK_SOURCE = YES
+
+# If the USE_HTAGS tag is set to YES then the references to source code
+# will point to the HTML generated by the htags(1) tool instead of doxygen
+# built-in source browser. The htags tool is part of GNU's global source
+# tagging system (see http://www.gnu.org/software/global/global.html). You
+# will need version 4.8.6 or higher.
+
+USE_HTAGS              = NO
+
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen
+# will generate a verbatim copy of the header file for each class for
+# which an include is specified. Set to NO to disable this.
+
+VERBATIM_HEADERS       = YES
+
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index
+# of all compounds will be generated. Enable this if the project
+# contains a lot of classes, structs, unions or interfaces.
+
+ALPHABETICAL_INDEX     = NO
+
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
+# in which this list will be split (can be a number in the range [1..20])
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all
+# classes will be put under the same header in the alphabetical index.
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that
+# should be ignored while generating the index headers.
+
+IGNORE_PREFIX          =
+
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will
+# generate HTML output.
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `html' will be used as the default path.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank
+# doxygen will generate files with .html extension.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a personal HTML header for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard header.
+
+HTML_HEADER            =
+
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard footer.
+
+HTML_FOOTER            =
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading
+# style sheet that is used by each HTML page. It can be used to
+# fine-tune the look of the HTML output. If the tag is left blank doxygen
+# will generate a default style sheet. Note that doxygen will try to copy
+# the style sheet file to the HTML output directory, so don't put your own
+# stylesheet in the HTML output directory as well, or it will be erased!
+
+HTML_STYLESHEET        =
+
+# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes,
+# files or namespaces will be aligned in HTML using tables. If set to
+# NO a bullet list will be used.
+
+HTML_ALIGN_MEMBERS     = YES
+
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+# documentation will contain sections that can be hidden and shown after the
+# page has loaded. For this to work a browser that supports
+# JavaScript and DHTML is required (for instance Mozilla 1.0+, Firefox
+# Netscape 6.0+, Internet explorer 5.0+, Konqueror, or Safari).
+
+HTML_DYNAMIC_SECTIONS  = NO
+
+# If the GENERATE_DOCSET tag is set to YES, additional index files
+# will be generated that can be used as input for Apple's Xcode 3
+# integrated development environment, introduced with OSX 10.5 (Leopard).
+# To create a documentation set, doxygen will generate a Makefile in the
+# HTML output directory. Running make will produce the docset in that
+# directory and running "make install" will install the docset in
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find
+# it at startup.
+# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html for more information.
+
+GENERATE_DOCSET        = NO
+
+# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the
+# feed. A documentation feed provides an umbrella under which multiple
+# documentation sets from a single provider (such as a company or product suite)
+# can be grouped.
+
+DOCSET_FEEDNAME        = "Doxygen generated docs"
+
+# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that
+# should uniquely identify the documentation set bundle. This should be a
+# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen
+# will append .docset to the name.
+
+DOCSET_BUNDLE_ID       = org.doxygen.Project
+
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files
+# will be generated that can be used as input for tools like the
+# Microsoft HTML help workshop to generate a compiled HTML help file (.chm)
+# of the generated HTML documentation.
+
+GENERATE_HTMLHELP      = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can
+# be used to specify the file name of the resulting .chm file. You
+# can add a path in front of the file if the result should not be
+# written to the html output directory.
+
+CHM_FILE               =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can
+# be used to specify the location (absolute path including file name) of
+# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run
+# the HTML help compiler on the generated index.hhp.
+
+HHC_LOCATION           =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag
+# controls if a separate .chi index file is generated (YES) or that
+# it should be included in the master .chm file (NO).
+
+GENERATE_CHI           = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING
+# is used to encode HtmlHelp index (hhk), content (hhc) and project file
+# content.
+
+CHM_INDEX_ENCODING     =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag
+# controls whether a binary table of contents is generated (YES) or a
+# normal table of contents (NO) in the .chm file.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members
+# to the contents of the HTML help documentation and to the tree view.
+
+TOC_EXPAND             = NO
+
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and QHP_VIRTUAL_FOLDER
+# are set, an additional index file will be generated that can be used as input for
+# Qt's qhelpgenerator to generate a Qt Compressed Help (.qch) of the generated
+# HTML documentation.
+
+GENERATE_QHP           = NO
+
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can
+# be used to specify the file name of the resulting .qch file.
+# The path specified is relative to the HTML output folder.
+
+QCH_FILE               =
+
+# The QHP_NAMESPACE tag specifies the namespace to use when generating
+# Qt Help Project output. For more information please see
+# http://doc.trolltech.com/qthelpproject.html#namespace
+
+QHP_NAMESPACE          =
+
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating
+# Qt Help Project output. For more information please see
+# http://doc.trolltech.com/qthelpproject.html#virtual-folders
+
+QHP_VIRTUAL_FOLDER     = doc
+
+# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to add.
+# For more information please see
+# http://doc.trolltech.com/qthelpproject.html#custom-filters
+
+QHP_CUST_FILTER_NAME   =
+
+# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the custom filter to add.For more information please see
+# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">Qt Help Project / Custom Filters</a>.
+
+QHP_CUST_FILTER_ATTRS  =
+
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this project's
+# filter section matches.
+# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">Qt Help Project / Filter Attributes</a>.
+
+QHP_SECT_FILTER_ATTRS  =
+
+# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can
+# be used to specify the location of Qt's qhelpgenerator.
+# If non-empty doxygen will try to run qhelpgenerator on the generated
+# .qhp file.
+
+QHG_LOCATION           =
+
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index at
+# top of each HTML page. The value NO (the default) enables the index and
+# the value YES disables it.
+
+DISABLE_INDEX          = NO
+
+# This tag can be used to set the number of enum values (range [1..20])
+# that doxygen will group on one line in the generated HTML documentation.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information.
+# If the tag value is set to YES, a side panel will be generated
+# containing a tree-like index structure (just like the one that
+# is generated for HTML Help). For this to work a browser that supports
+# JavaScript, DHTML, CSS and frames is required (i.e. any modern browser).
+# Windows users are probably better off using the HTML help feature.
+
+GENERATE_TREEVIEW      = NO
+
+# By enabling USE_INLINE_TREES, doxygen will generate the Groups, Directories,
+# and Class Hierarchy pages using a tree view instead of an ordered list.
+
+USE_INLINE_TREES       = NO
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be
+# used to set the initial width (in pixels) of the frame in which the tree
+# is shown.
+
+TREEVIEW_WIDTH         = 250
+
+# Use this tag to change the font size of Latex formulas included
+# as images in the HTML documentation. The default is 10. Note that
+# when you change the font size after a successful doxygen run you need
+# to manually remove any form_*.png images from the HTML output directory
+# to force them to be regenerated.
+
+FORMULA_FONTSIZE       = 10
+
+# When the SEARCHENGINE tag is enable doxygen will generate a search box for the HTML output. The underlying search engine uses javascript
+# and DHTML and should work on any modern browser. Note that when using HTML help (GENERATE_HTMLHELP) or Qt help (GENERATE_QHP)
+# there is already a search function so this one should typically
+# be disabled.
+
+SEARCHENGINE           = YES
+
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will
+# generate Latex output.
+
+GENERATE_LATEX         = NO
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `latex' will be used as the default path.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked. If left blank `latex' will be used as the default command name.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to
+# generate index for LaTeX. If left blank `makeindex' will be used as the
+# default command name.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact
+# LaTeX documents. This may be useful for small projects and may help to
+# save some trees in general.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used
+# by the printer. Possible values are: a4, a4wide, letter, legal and
+# executive. If left blank a4wide will be used.
+
+PAPER_TYPE             = a4wide
+
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
+# packages that should be included in the LaTeX output.
+
+EXTRA_PACKAGES         =
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
+# the generated latex document. The header should contain everything until
+# the first chapter. If it is left blank doxygen will generate a
+# standard header. Notice: only use this tag if you know what you are doing!
+
+LATEX_HEADER           =
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will
+# contain links (just like the HTML output) instead of page references
+# This makes the output suitable for online browsing using a pdf viewer.
+
+PDF_HYPERLINKS         = YES
+
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of
+# plain latex in the generated Makefile. Set this option to YES to get a
+# higher quality PDF documentation.
+
+USE_PDFLATEX           = YES
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode.
+# command to the generated LaTeX files. This will instruct LaTeX to keep
+# running if errors occur, instead of asking the user for help.
+# This option is also used when generating formulas in HTML.
+
+LATEX_BATCHMODE        = NO
+
+# If LATEX_HIDE_INDICES is set to YES then doxygen will not
+# include the index chapters (such as File Index, Compound Index, etc.)
+# in the output.
+
+LATEX_HIDE_INDICES     = NO
+
+# If LATEX_SOURCE_CODE is set to YES then doxygen will include source code with syntax highlighting in the LaTeX output. Note that which sources are shown also depends on other settings such as SOURCE_BROWSER.
+
+LATEX_SOURCE_CODE      = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output
+# The RTF output is optimized for Word 97 and may not look very pretty with
+# other RTF readers or editors.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `rtf' will be used as the default path.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact
+# RTF documents. This may be useful for small projects and may help to
+# save some trees in general.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated
+# will contain hyperlink fields. The RTF file will
+# contain links (just like the HTML output) instead of page references.
+# This makes the output suitable for online browsing using WORD or other
+# programs which support those fields.
+# Note: wordpad (write) and others do not support links.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's
+# config file, i.e. a series of assignments. You only have to provide
+# replacements, missing definitions are set to their default value.
+
+RTF_STYLESHEET_FILE    =
+
+# Set optional variables used in the generation of an rtf document.
+# Syntax is similar to doxygen's config file.
+
+RTF_EXTENSIONS_FILE    =
+
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will
+# generate man pages
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `man' will be used as the default path.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to
+# the generated man pages (default is the subroutine's section .3)
+
+MAN_EXTENSION          = .3
+
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output,
+# then it will generate one additional man file for each entity
+# documented in the real man page(s). These additional files
+# only source the real man page, but without them the man command
+# would be unable to find the correct page. The default is NO.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES Doxygen will
+# generate an XML file that captures the structure of
+# the code including all documentation.
+
+GENERATE_XML           = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `xml' will be used as the default path.
+
+XML_OUTPUT             = xml
+
+# The XML_SCHEMA tag can be used to specify an XML schema,
+# which can be used by a validating XML parser to check the
+# syntax of the XML files.
+
+XML_SCHEMA             =
+
+# The XML_DTD tag can be used to specify an XML DTD,
+# which can be used by a validating XML parser to check the
+# syntax of the XML files.
+
+XML_DTD                =
+
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will
+# dump the program listings (including syntax highlighting
+# and cross-referencing information) to the XML output. Note that
+# enabling this will significantly increase the size of the XML output.
+
+XML_PROGRAMLISTING     = YES
+
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will
+# generate an AutoGen Definitions (see autogen.sf.net) file
+# that captures the structure of the code including all
+# documentation. Note that this feature is still experimental
+# and incomplete at the moment.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will
+# generate a Perl module file that captures the structure of
+# the code including all documentation. Note that this
+# feature is still experimental and incomplete at the
+# moment.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able
+# to generate PDF and DVI output from the Perl module output.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be
+# nicely formatted so it can be parsed by a human reader.
+# This is useful
+# if you want to understand what is going on.
+# On the other hand, if this
+# tag is set to NO the size of the Perl module output will be much smaller
+# and Perl will parse it just the same.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX.
+# This is useful so different doxyrules.make files included by the same
+# Makefile don't overwrite each other's variables.
+
+PERLMOD_MAKEVAR_PREFIX =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will
+# evaluate all C-preprocessor directives found in the sources and include
+# files.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro
+# names in the source code. If set to NO (the default) only conditional
+# compilation will be performed. Macro expansion can be done in a controlled
+# way by setting EXPAND_ONLY_PREDEF to YES.
+
+MACRO_EXPANSION        = YES
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES
+# then the macro expansion is limited to the macros specified with the
+# PREDEFINED and EXPAND_AS_DEFINED tags.
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files
+# in the INCLUDE_PATH (see below) will be search if a #include is found.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by
+# the preprocessor.
+
+INCLUDE_PATH           =
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will
+# be used.
+
+INCLUDE_FILE_PATTERNS  =
+
+# The PREDEFINED tag can be used to specify one or more macro names that
+# are defined before the preprocessor is started (similar to the -D option of
+# gcc). The argument of the tag is a list of macros of the form: name
+# or name=definition (no spaces). If the definition and the = are
+# omitted =1 is assumed. To prevent a macro definition from being
+# undefined via #undef or recursively expanded use the := operator
+# instead of the = operator.
+
+PREDEFINED             =
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then
+# this tag can be used to specify a list of macro names that should be expanded.
+# The macro definition that is found in the sources will be used.
+# Use the PREDEFINED tag if you want to use a different macro definition.
+
+EXPAND_AS_DEFINED      =
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then
+# doxygen's preprocessor will remove all function-like macros that are alone
+# on a line, have an all uppercase name, and do not end with a semicolon. Such
+# function macros are typically used for boiler-plate code, and will confuse
+# the parser if not removed.
+
+SKIP_FUNCTION_MACROS   = YES
+
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references
+#---------------------------------------------------------------------------
+
+# The TAGFILES option can be used to specify one or more tagfiles.
+# Optionally an initial location of the external documentation
+# can be added for each tagfile. The format of a tag file without
+# this location is as follows:
+#
+# TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+#
+# TAGFILES = file1=loc1 "file2 = loc2" ...
+# where "loc1" and "loc2" can be relative or absolute paths or
+# URLs. If a location is present for each tag, the installdox tool
+# does not have to be run to correct the links.
+# Note that each tag file must have a unique name
+# (where the name does NOT include the path)
+# If a tag file is not located in the directory in which doxygen
+# is run, you must also specify the path to the tagfile here.
+
+TAGFILES               =
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create
+# a tag file that is based on the input files it reads.
+
+GENERATE_TAGFILE       =
+
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed
+# in the class index. If set to NO only the inherited external classes
+# will be listed.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will
+# be listed.
+
+EXTERNAL_GROUPS        = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script
+# interpreter (i.e. the result of `which perl').
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
+# or super classes. Setting the tag to NO turns the diagrams off. Note that
+# this option is superseded by the HAVE_DOT option below. This is only a
+# fallback. It is recommended to install and use dot, since it yields more
+# powerful graphs.
+
+CLASS_DIAGRAMS         = YES
+
+# You can define message sequence charts within doxygen comments using the \msc
+# command. Doxygen will then run the mscgen tool (see
+# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where
+# the mscgen tool resides. If left empty the tool is assumed to be found in the
+# default search path.
+
+MSCGEN_PATH            =
+
+# If set to YES, the inheritance and collaboration graphs will hide
+# inheritance and usage relations if the target is undocumented
+# or is not a class.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz, a graph visualization
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section
+# have no effect if this option is set to NO (the default)
+
+HAVE_DOT               = NO
+
+# By default doxygen will write a font called FreeSans.ttf to the output
+# directory and reference it in all dot files that doxygen generates. This
+# font does not include all possible unicode characters however, so when you need
+# these (or just want a differently looking font) you can specify the font name
+# using DOT_FONTNAME. You need need to make sure dot is able to find the font,
+# which can be done by putting it in a standard location or by setting the
+# DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory
+# containing the font.
+
+DOT_FONTNAME           = FreeSans
+
+# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs.
+# The default size is 10pt.
+
+DOT_FONTSIZE           = 10
+
+# By default doxygen will tell dot to use the output directory to look for the
+# FreeSans.ttf font (which doxygen will put there itself). If you specify a
+# different font using DOT_FONTNAME you can set the path where dot
+# can find it using this tag.
+
+DOT_FONTPATH           =
+
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect inheritance relations. Setting this tag to YES will force the
+# the CLASS_DIAGRAMS tag to NO.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect implementation dependencies (inheritance, containment, and
+# class references variables) of the class with other documented classes.
+
+COLLABORATION_GRAPH    = YES
+
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for groups, showing the direct groups dependencies
+
+GROUP_GRAPHS           = YES
+
+# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
+# Language.
+
+UML_LOOK               = NO
+
+# If set to YES, the inheritance and collaboration graphs will show the
+# relations between templates and their instances.
+
+TEMPLATE_RELATIONS     = NO
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT
+# tags are set to YES then doxygen will generate a graph for each documented
+# file showing the direct and indirect include dependencies of the file with
+# other documented files.
+
+INCLUDE_GRAPH          = YES
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and
+# HAVE_DOT tags are set to YES then doxygen will generate a graph for each
+# documented header file showing the documented files that directly or
+# indirectly include this file.
+
+INCLUDED_BY_GRAPH      = YES
+
+# If the CALL_GRAPH and HAVE_DOT options are set to YES then
+# doxygen will generate a call dependency graph for every global function
+# or class method. Note that enabling this option will significantly increase
+# the time of a run. So in most cases it will be better to enable call graphs
+# for selected functions only using the \callgraph command.
+
+CALL_GRAPH             = NO
+
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then
+# doxygen will generate a caller dependency graph for every global function
+# or class method. Note that enabling this option will significantly increase
+# the time of a run. So in most cases it will be better to enable caller
+# graphs for selected functions only using the \callergraph command.
+
+CALLER_GRAPH           = NO
+
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen
+# will graphical hierarchy of all classes instead of a textual one.
+
+GRAPHICAL_HIERARCHY    = YES
+
+# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES
+# then doxygen will show the dependencies a directory has on other directories
+# in a graphical way. The dependency relations are determined by the #include
+# relations between the files in the directories.
+
+DIRECTORY_GRAPH        = YES
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. Possible values are png, jpg, or gif
+# If left blank png will be used.
+
+DOT_IMAGE_FORMAT       = png
+
+# The tag DOT_PATH can be used to specify the path where the dot tool can be
+# found. If left blank, it is assumed the dot tool can be found in the path.
+
+DOT_PATH               =
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the
+# \dotfile command).
+
+DOTFILE_DIRS           =
+
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of
+# nodes that will be shown in the graph. If the number of nodes in a graph
+# becomes larger than this value, doxygen will truncate the graph, which is
+# visualized by representing a node as a red box. Note that doxygen if the
+# number of direct children of the root node in a graph is already larger than
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note
+# that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
+
+DOT_GRAPH_MAX_NODES    = 50
+
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the
+# graphs generated by dot. A depth value of 3 means that only nodes reachable
+# from the root by following a path via at most 3 edges will be shown. Nodes
+# that lay further from the root node will be omitted. Note that setting this
+# option to 1 or 2 may greatly reduce the computation time needed for large
+# code bases. Also note that the size of a graph can be further restricted by
+# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
+
+MAX_DOT_GRAPH_DEPTH    = 0
+
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, because dot on Windows does not
+# seem to support this out of the box. Warning: Depending on the platform used,
+# enabling this option may lead to badly anti-aliased labels on the edges of
+# a graph (i.e. they become hard to read).
+
+DOT_TRANSPARENT        = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10)
+# support this, this feature is disabled by default.
+
+DOT_MULTI_TARGETS      = YES
+
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will
+# generate a legend page explaining the meaning of the various boxes and
+# arrows in the dot generated graphs.
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
+# remove the intermediate dot files that are used to generate
+# the various graphs.
+
+DOT_CLEANUP            = YES
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
index 58b5af9da..e971e9f6a 100644
--- a/host/examples/rx_timed_samples.cpp
+++ b/host/examples/rx_timed_samples.cpp
@@ -29,6 +29,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::string transport_args;
     int seconds_in_future;
     size_t total_num_samps;
+    double rx_rate;
 
     //setup the program options
     po::options_description desc("Allowed options");
@@ -37,6 +38,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("args", po::value<std::string>(&transport_args)->default_value(""), "simple uhd transport args")
         ("secs", po::value<int>(&seconds_in_future)->default_value(3), "number of seconds in the future to receive")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
+        ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
     ;
     po::variables_map vm;
     po::store(po::parse_command_line(argc, argv, desc), vm);
@@ -57,9 +59,9 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::cout << boost::format("Using Device: %s") % sdev->get_name() << std::endl;
 
     //set properties on the device
-    double rx_rate = sdev->get_rx_rates()[4]; //pick some rate
     std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate/1e6) << std::endl;
     sdev->set_rx_rate(rx_rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl;
     std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
     sdev->set_time_now(uhd::time_spec_t(0));
 
@@ -67,11 +69,10 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::cout << std::endl;
     std::cout << boost::format("Begin streaming %u samples, %d seconds in the future...")
         % total_num_samps % seconds_in_future << std::endl;
-    uhd::stream_cmd_t stream_cmd;
+    uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+    stream_cmd.num_samps = total_num_samps;
     stream_cmd.stream_now = false;
     stream_cmd.time_spec = uhd::time_spec_t(seconds_in_future);
-    stream_cmd.continuous = false;
-    stream_cmd.num_samps = total_num_samps;
     sdev->issue_stream_cmd(stream_cmd);
 
     //loop until total number of samples reached
diff --git a/host/include/uhd/device.hpp b/host/include/uhd/device.hpp
index 4d4196d98..ae75e6dc8 100644
--- a/host/include/uhd/device.hpp
+++ b/host/include/uhd/device.hpp
@@ -83,6 +83,7 @@ public:
      * If the buffer has more samples than the maximum supported,
      * the send method will send the maximum number of samples
      * as supported by the transport and return the number sent.
+     * In this case, the end of burst flag will be forced to false.
      * It is up to the caller to call send again on the un-sent
      * portions of the buffer, until the buffer is exhausted.
      *
@@ -112,6 +113,7 @@ public:
      * and will flag the metadata to show that this is a fragment.
      * The next call to receive, after the remainder becomes exahausted,
      * will perform an over-the-wire receive as usual.
+     * See the rx metadata fragment flags and offset fields for details.
      *
      * This is a blocking call and will not return until the number
      * of samples returned have been written into the buffer.
diff --git a/host/include/uhd/types/device_addr.hpp b/host/include/uhd/types/device_addr.hpp
index 1162884fb..f5dd9371c 100644
--- a/host/include/uhd/types/device_addr.hpp
+++ b/host/include/uhd/types/device_addr.hpp
@@ -32,7 +32,7 @@ namespace uhd{
      *
      * To narrow down the discovery process to a particular device,
      * specify a transport key/value pair specific to your device.
-     * Ex, to find a usrp2: my_dev_addr["addr"] = <resolvable_hostname_or_ip>
+     * Ex, to find a usrp2: my_dev_addr["addr"] = [resolvable_hostname_or_ip]
      *
      * The device address can also be used to pass arguments into
      * the transport layer control to set (for example) buffer sizes.
diff --git a/host/include/uhd/types/dict.hpp b/host/include/uhd/types/dict.hpp
index 7fb712e76..c8fbc5a9f 100644
--- a/host/include/uhd/types/dict.hpp
+++ b/host/include/uhd/types/dict.hpp
@@ -62,7 +62,7 @@ namespace uhd{
 
         /*!
          * Get the number of elements in this dict.
-         * \param the number of elements
+         * \return the number of elements
          */
         std::size_t size(void) const{
             return _map.size();
@@ -73,7 +73,7 @@ namespace uhd{
          * Key order depends on insertion precedence.
          * \return vector of keys
          */
-        std::vector<Key> get_keys(void) const{
+        const std::vector<Key> keys(void) const{
             std::vector<Key> keys;
             BOOST_FOREACH(const pair_t &p, _map){
                 keys.push_back(p.first);
@@ -86,7 +86,7 @@ namespace uhd{
          * Value order depends on insertion precedence.
          * \return vector of values
          */
-        std::vector<Val> get_vals(void) const{
+        const std::vector<Val> vals(void) const{
             std::vector<Val> vals;
             BOOST_FOREACH(const pair_t &p, _map){
                 vals.push_back(p.second);
diff --git a/host/include/uhd/types/metadata.hpp b/host/include/uhd/types/metadata.hpp
index 6e93040d9..20f483bed 100644
--- a/host/include/uhd/types/metadata.hpp
+++ b/host/include/uhd/types/metadata.hpp
@@ -29,11 +29,45 @@ namespace uhd{
      * The receive routines will convert IF data headers into metadata.
      */
     struct UHD_API rx_metadata_t{
-        boost::uint32_t stream_id;
-        time_spec_t time_spec;
+        /*!
+         * Stream IDs may be used to identify source DSP units.
+         * --Not currently used in any known device implementation.--
+         */
         bool has_stream_id;
+        boost::uint32_t stream_id;
+
+        /*!
+         * Time specification:
+         * Set from timestamps on incoming data when provided.
+         */
         bool has_time_spec;
-        bool is_fragment;
+        time_spec_t time_spec;
+
+        /*!
+         * Fragmentation flag and offset:
+         * Similar to IPv4 fragmentation: http://en.wikipedia.org/wiki/IPv4#Fragmentation_and_reassembly
+         * More fragments is true when the input buffer has insufficient size to fit
+         * an entire received packet. More fragments will be false for the last fragment.
+         * The fragment offset is the sample number at the start of the receive buffer.
+         * For non-fragmented receives, the fragment offset should always be zero.
+         */
+        bool more_fragments;
+        size_t fragment_offset;
+
+        /*!
+         * Burst flags:
+         * Start of burst will be true for the first packet in the chain.
+         * End of burst will be true for the last packet in the chain.
+         * --Not currently used in any known device implementation.--
+         */
+        //bool start_of_burst;
+        //bool end_of_burst;
+
+        /*!
+         * Error conditions (TODO):
+         * Previous packets dropped?
+         * Timed-out on receive?
+         */
 
         //default constructor
         rx_metadata_t(void);
@@ -45,10 +79,26 @@ namespace uhd{
      * The send routines will convert the metadata to IF data headers.
      */
     struct UHD_API tx_metadata_t{
-        boost::uint32_t stream_id;
-        time_spec_t time_spec;
+        /*!
+         * Stream IDs may be used to identify destination DSP units.
+         * --Not currently used in any known device implementation.--
+         */
         bool has_stream_id;
+        boost::uint32_t stream_id;
+
+        /*!
+         * Time specification:
+         * Set has time spec to false to perform a send "now".
+         * Or, set to true, and fill in time spec for a send "at".
+         */
         bool has_time_spec;
+        time_spec_t time_spec;
+
+        /*!
+         * Burst flags:
+         * Set start of burst to true for the first packet in the chain.
+         * Set end of burst to true for the last packet in the chain.
+         */
         bool start_of_burst;
         bool end_of_burst;
 
diff --git a/host/include/uhd/types/stream_cmd.hpp b/host/include/uhd/types/stream_cmd.hpp
index 97a6b73ce..41708e2e2 100644
--- a/host/include/uhd/types/stream_cmd.hpp
+++ b/host/include/uhd/types/stream_cmd.hpp
@@ -31,24 +31,32 @@ namespace uhd{
      * Granular control over what the device streams to the host can be
      * achieved through submission of multiple (carefully-crafted) commands.
      *
-     * The stream_now parameter controls when the stream begins.
+     * The mode parameter controls how streaming is issued to the device:
+     *   - "Start continuous" tells the device to stream samples indefinitely.
+     *   - "Stop continuous" tells the device to end continuous streaming.
+     *   - "Num samps and done" tells the device to stream num samps and
+     *      to not expect a future stream command for contiguous samples.
+     *   - "Num samps and more" tells the device to stream num samps and
+     *      to expect a future stream command for contiguous samples.
+     *
+     * The stream now parameter controls when the stream begins.
      * When true, the device will begin streaming ASAP. When false,
      * the device will begin streaming at a time specified by time_spec.
-     *
-     * The continuous parameter controls the number of samples received.
-     * When true, the device continues streaming indefinitely. When false,
-     * the device will stream the number of samples specified by num_samps.
-     *
-     * Standard usage case:
-     * To start continuous streaming, set stream_now to true and continuous to true.
-     * To end continuous streaming, set stream_now to true and continuous to false.
      */
     struct UHD_API stream_cmd_t{
+
+        enum stream_mode_t {
+            STREAM_MODE_START_CONTINUOUS   = 'a',
+            STREAM_MODE_STOP_CONTINUOUS    = 'o',
+            STREAM_MODE_NUM_SAMPS_AND_DONE = 'd',
+            STREAM_MODE_NUM_SAMPS_AND_MORE = 'm'
+        } stream_mode;
+        size_t num_samps;
+
         bool stream_now;
         time_spec_t time_spec;
-        bool continuous;
-        size_t num_samps;
-        stream_cmd_t(void);
+
+        stream_cmd_t(const stream_mode_t &stream_mode);
     };
 
 } //namespace uhd
diff --git a/host/include/uhd/usrp/dsp_props.hpp b/host/include/uhd/usrp/dsp_props.hpp
index 60c0df942..75d8c0a60 100644
--- a/host/include/uhd/usrp/dsp_props.hpp
+++ b/host/include/uhd/usrp/dsp_props.hpp
@@ -24,15 +24,24 @@ namespace uhd{ namespace usrp{
 
     /*!
      * Possible device dsp properties:
-     *   A dsp can have a wide range of possible properties.
-     *   A ddc would have a properties "decim", "freq", "taps"...
-     *   Other properties could be gains, complex scalars, enables...
-     *   For this reason the only required properties of a dsp is a name
-     *   and a property to get list of other possible properties.
+     *   A dsp is a black box fpga component found between
+     *   the over-the-wire data and the codec pins.
+     *
+     *   The host rate can be modified to control resampling.
+     *   Resampling can take the form of decimation, interpolation,
+     *   or more complex fractional resampling techniques.
+     *   As usual, read back the host rate after setting it
+     *   to get the actual rate that was set (implementation dependent).
+     *
+     *   A dsp can also shift the digital stream in frequency.
+     *   Set the shift property and read it back to get actual shift.
      */
     enum dsp_prop_t{
-        DSP_PROP_NAME   = 'n', //ro, std::string
-        DSP_PROP_OTHERS = 'o'  //ro, prop_names_t
+        DSP_PROP_NAME         = 'n', //ro, std::string
+        DSP_PROP_OTHERS       = 'o', //ro, prop_names_t
+        DSP_PROP_FREQ_SHIFT   = 'f', //rw, double Hz
+        DSP_PROP_CODEC_RATE   = 'c', //ro, double Sps
+        DSP_PROP_HOST_RATE    = 'h'  //rw, double Sps
     };
 
 }} //namespace
diff --git a/host/include/uhd/usrp/mboard_props.hpp b/host/include/uhd/usrp/mboard_props.hpp
index cfc1f412e..55c11b822 100644
--- a/host/include/uhd/usrp/mboard_props.hpp
+++ b/host/include/uhd/usrp/mboard_props.hpp
@@ -42,7 +42,8 @@ namespace uhd{ namespace usrp{
         MBOARD_PROP_TX_DBOARD_NAMES = 'V', //ro, prop_names_t
         MBOARD_PROP_CLOCK_CONFIG    = 'C', //rw, clock_config_t
         MBOARD_PROP_TIME_NOW        = 't', //wo, time_spec_t
-        MBOARD_PROP_TIME_NEXT_PPS   = 'T'  //wo, time_spec_t
+        MBOARD_PROP_TIME_NEXT_PPS   = 'T', //wo, time_spec_t
+        MBOARD_PROP_STREAM_CMD      = 's'  //wo, stream_cmd_t
     };
 
 }} //namespace
diff --git a/host/include/uhd/usrp/simple_usrp.hpp b/host/include/uhd/usrp/simple_usrp.hpp
index 2d6ad2a0f..6f74a406b 100644
--- a/host/include/uhd/usrp/simple_usrp.hpp
+++ b/host/include/uhd/usrp/simple_usrp.hpp
@@ -59,7 +59,6 @@ public:
      ******************************************************************/
     virtual void set_rx_rate(double rate) = 0;
     virtual double get_rx_rate(void) = 0;
-    virtual std::vector<double> get_rx_rates(void) = 0;
 
     virtual tune_result_t set_rx_freq(double freq) = 0;
     virtual freq_range_t get_rx_freq_range(void) = 0;
@@ -77,7 +76,6 @@ public:
      ******************************************************************/
     virtual void set_tx_rate(double rate) = 0;
     virtual double get_tx_rate(void) = 0;
-    virtual std::vector<double> get_tx_rates(void) = 0;
 
     virtual tune_result_t set_tx_freq(double freq) = 0;
     virtual freq_range_t get_tx_freq_range(void) = 0;
diff --git a/host/include/uhd/usrp/subdev_props.hpp b/host/include/uhd/usrp/subdev_props.hpp
index b7d22b777..cd6b14ef5 100644
--- a/host/include/uhd/usrp/subdev_props.hpp
+++ b/host/include/uhd/usrp/subdev_props.hpp
@@ -39,7 +39,7 @@ namespace uhd{ namespace usrp{
         SUBDEV_PROP_QUADRATURE        = 'q', //ro, bool
         SUBDEV_PROP_IQ_SWAPPED        = 'i', //ro, bool
         SUBDEV_PROP_SPECTRUM_INVERTED = 's', //ro, bool
-        SUBDEV_PROP_LO_INTERFERES     = 'l'  //ro, bool
+        SUBDEV_PROP_USE_LO_OFFSET     = 'l'  //ro, bool
         //SUBDEV_PROP_RSSI,              //ro, float //----> not on all boards, use named prop
         //SUBDEV_PROP_BANDWIDTH          //rw, double //----> not on all boards, use named prop
     };
diff --git a/host/lib/device.cpp b/host/lib/device.cpp
index 27a365d34..0197a6232 100644
--- a/host/lib/device.cpp
+++ b/host/lib/device.cpp
@@ -42,7 +42,7 @@ static size_t hash_device_addr(
     const device_addr_t &dev_addr
 ){
     //sort the keys of the device address
-    std::vector<std::string> keys = dev_addr.get_keys();
+    std::vector<std::string> keys = dev_addr.keys();
     std::sort(keys.begin(), keys.end());
 
     //combine the hashes of sorted keys/value pairs
@@ -99,7 +99,7 @@ device::sptr device::make(const device_addr_t &hint, size_t which){
         BOOST_FOREACH(device_addr_t dev_addr, fcn.get<0>()(hint)){
             //copy keys that were in hint but not in dev_addr
             //this way, we can pass additional transport arguments
-            BOOST_FOREACH(const std::string &key, hint.get_keys()){
+            BOOST_FOREACH(const std::string &key, hint.keys()){
                 if (not dev_addr.has_key(key)) dev_addr[key] = hint[key];
             }
             //append the discovered address and its factory function
diff --git a/host/lib/load_modules.cpp b/host/lib/load_modules.cpp
index babff1ca5..ef633325d 100644
--- a/host/lib/load_modules.cpp
+++ b/host/lib/load_modules.cpp
@@ -31,6 +31,7 @@ namespace fs = boost::filesystem;
  **********************************************************************/
 #ifdef HAVE_DLFCN_H
 #include <dlfcn.h>
+static const std::string env_path_sep = ":";
 
 static void load_module(const std::string &file_name){
     if (dlopen(file_name.c_str(), RTLD_LAZY) == NULL){
@@ -42,6 +43,7 @@ static void load_module(const std::string &file_name){
 
 #elif HAVE_WINDOWS_H
 #include <windows.h>
+static const std::string env_path_sep = ";";
 
 static void load_module(const std::string &file_name){
     if (LoadLibrary(file_name.c_str()) == NULL){
@@ -52,6 +54,7 @@ static void load_module(const std::string &file_name){
 }
 
 #else
+static const std::string env_path_sep = ":";
 
 static void load_module(const std::string &file_name){
     throw std::runtime_error(str(
@@ -108,7 +111,7 @@ UHD_STATIC_BLOCK(load_modules){
 
     //split the path at the path separators
     std::vector<std::string> module_paths;
-    boost::split(module_paths, env_module_path, boost::is_any_of(":;"));
+    boost::split(module_paths, env_module_path, boost::is_any_of(env_path_sep));
 
     //load modules in each path
     BOOST_FOREACH(const std::string &module_path, module_paths){
diff --git a/host/lib/types.cpp b/host/lib/types.cpp
index bf9f8b895..61a63b710 100644
--- a/host/lib/types.cpp
+++ b/host/lib/types.cpp
@@ -71,9 +71,9 @@ clock_config_t::clock_config_t(void){
 /***********************************************************************
  * stream command
  **********************************************************************/
-stream_cmd_t::stream_cmd_t(void){
+stream_cmd_t::stream_cmd_t(const stream_mode_t &stream_mode_){
+    stream_mode = stream_mode_;
     stream_now = true;
-    continuous = false;
     num_samps = 0;
 }
 
@@ -85,7 +85,8 @@ rx_metadata_t::rx_metadata_t(void){
     has_stream_id = false;
     time_spec = time_spec_t();
     has_time_spec = false;
-    is_fragment = false;
+    more_fragments = false;
+    fragment_offset = 0;
 }
 
 tx_metadata_t::tx_metadata_t(void){
@@ -121,7 +122,7 @@ time_spec_t::time_spec_t(boost::posix_time::ptime time, double tick_rate){
 std::string device_addr_t::to_string(void) const{
     const device_addr_t &device_addr = *this;
     std::stringstream ss;
-    BOOST_FOREACH(std::string key, device_addr.get_keys()){
+    BOOST_FOREACH(std::string key, device_addr.keys()){
         ss << boost::format("%s: %s") % key % device_addr[key] << std::endl;
     }
     return ss.str();
@@ -137,7 +138,7 @@ static std::string trim(const std::string &in){
 std::string device_addr_t::to_args_str(void) const{
     std::string args_str;
     const device_addr_t &device_addr = *this;
-    BOOST_FOREACH(const std::string &key, device_addr.get_keys()){
+    BOOST_FOREACH(const std::string &key, device_addr.keys()){
         args_str += key + pair_delim + device_addr[key] + arg_delim;
     }
     return args_str;
diff --git a/host/lib/usrp/dboard/db_basic_and_lf.cpp b/host/lib/usrp/dboard/db_basic_and_lf.cpp
index 2f6890b25..5a992339b 100644
--- a/host/lib/usrp/dboard/db_basic_and_lf.cpp
+++ b/host/lib/usrp/dboard/db_basic_and_lf.cpp
@@ -87,8 +87,6 @@ UHD_STATIC_BLOCK(reg_basic_and_lf_dboards){
  **********************************************************************/
 basic_rx::basic_rx(ctor_args_t const& args, double max_freq) : rx_dboard_base(args){
     _max_freq = max_freq;
-    // set the gpios to safe values (all inputs)
-    get_interface()->set_gpio_ddr(dboard_interface::GPIO_BANK_RX, 0x0000);
 }
 
 basic_rx::~basic_rx(void){
@@ -145,8 +143,14 @@ void basic_rx::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_IQ_SWAPPED:
+        val = false;
+        return;
+
     case SUBDEV_PROP_SPECTRUM_INVERTED:
-    case SUBDEV_PROP_LO_INTERFERES:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
         val = false;
         return;
     }
@@ -170,17 +174,7 @@ void basic_rx::rx_set(const wax::obj &key_, const wax::obj &val){
     case SUBDEV_PROP_FREQ:
         return; // it wont do you much good, but you can set it
 
-    case SUBDEV_PROP_NAME:
-    case SUBDEV_PROP_OTHERS:
-    case SUBDEV_PROP_GAIN_RANGE:
-    case SUBDEV_PROP_GAIN_NAMES:
-    case SUBDEV_PROP_FREQ_RANGE:
-    case SUBDEV_PROP_ANTENNA_NAMES:
-    case SUBDEV_PROP_QUADRATURE:
-    case SUBDEV_PROP_IQ_SWAPPED:
-    case SUBDEV_PROP_SPECTRUM_INVERTED:
-    case SUBDEV_PROP_LO_INTERFERES:
-        throw std::runtime_error(str(boost::format(
+    default: throw std::runtime_error(str(boost::format(
             "Error: trying to set read-only property on %s subdev"
         ) % dboard_id::to_string(get_rx_id())));
     }
@@ -191,8 +185,6 @@ void basic_rx::rx_set(const wax::obj &key_, const wax::obj &val){
  **********************************************************************/
 basic_tx::basic_tx(ctor_args_t const& args, double max_freq) : tx_dboard_base(args){
     _max_freq = max_freq;
-    // set the gpios to safe values (all inputs)
-    get_interface()->set_gpio_ddr(dboard_interface::GPIO_BANK_TX, 0x0000);
 }
 
 basic_tx::~basic_tx(void){
@@ -246,8 +238,14 @@ void basic_tx::tx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_IQ_SWAPPED:
+        val = false;
+        return;
+
     case SUBDEV_PROP_SPECTRUM_INVERTED:
-    case SUBDEV_PROP_LO_INTERFERES:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
         val = false;
         return;
     }
@@ -271,17 +269,7 @@ void basic_tx::tx_set(const wax::obj &key_, const wax::obj &val){
     case SUBDEV_PROP_FREQ:
         return; // it wont do you much good, but you can set it
 
-    case SUBDEV_PROP_NAME:
-    case SUBDEV_PROP_OTHERS:
-    case SUBDEV_PROP_GAIN_RANGE:
-    case SUBDEV_PROP_GAIN_NAMES:
-    case SUBDEV_PROP_FREQ_RANGE:
-    case SUBDEV_PROP_ANTENNA_NAMES:
-    case SUBDEV_PROP_QUADRATURE:
-    case SUBDEV_PROP_IQ_SWAPPED:
-    case SUBDEV_PROP_SPECTRUM_INVERTED:
-    case SUBDEV_PROP_LO_INTERFERES:
-        throw std::runtime_error(str(boost::format(
+    default: throw std::runtime_error(str(boost::format(
             "Error: trying to set read-only property on %s subdev"
         ) % dboard_id::to_string(get_tx_id())));
     }
diff --git a/host/lib/usrp/dboard_manager.cpp b/host/lib/usrp/dboard_manager.cpp
index 3a5cf3a35..4cf2e5820 100644
--- a/host/lib/usrp/dboard_manager.cpp
+++ b/host/lib/usrp/dboard_manager.cpp
@@ -250,11 +250,11 @@ dboard_manager_impl::~dboard_manager_impl(void){
 }
 
 prop_names_t dboard_manager_impl::get_rx_subdev_names(void){
-    return _rx_dboards.get_keys();
+    return _rx_dboards.keys();
 }
 
 prop_names_t dboard_manager_impl::get_tx_subdev_names(void){
-    return _tx_dboards.get_keys();
+    return _tx_dboards.keys();
 }
 
 wax::obj dboard_manager_impl::get_rx_subdev(const std::string &subdev_name){
diff --git a/host/lib/usrp/simple_usrp.cpp b/host/lib/usrp/simple_usrp.cpp
index a0551a630..fb3cc8eec 100644
--- a/host/lib/usrp/simple_usrp.cpp
+++ b/host/lib/usrp/simple_usrp.cpp
@@ -22,6 +22,7 @@
 #include <uhd/usrp/mboard_props.hpp>
 #include <uhd/usrp/device_props.hpp>
 #include <uhd/usrp/dboard_props.hpp>
+#include <uhd/usrp/dsp_props.hpp>
 #include <boost/foreach.hpp>
 #include <boost/format.hpp>
 #include <stdexcept>
@@ -30,17 +31,6 @@ using namespace uhd;
 using namespace uhd::usrp;
 
 /***********************************************************************
- * Helper Functions
- **********************************************************************/
-static std::vector<double> get_xx_rates(wax::obj decerps, wax::obj rate){
-    std::vector<double> rates;
-    BOOST_FOREACH(size_t decerp, decerps.as<std::vector<size_t> >()){
-        rates.push_back(rate.as<double>()/decerp);
-    }
-    return rates;
-}
-
-/***********************************************************************
  * Simple Device Implementation
  **********************************************************************/
 class simple_usrp_impl : public simple_usrp{
@@ -48,8 +38,8 @@ public:
     simple_usrp_impl(const device_addr_t &addr){
         _dev = device::make(addr);
         _mboard = (*_dev)[DEVICE_PROP_MBOARD];
-        _rx_ddc = _mboard[named_prop_t(MBOARD_PROP_RX_DSP, "ddc0")];
-        _tx_duc = _mboard[named_prop_t(MBOARD_PROP_TX_DSP, "duc0")];
+        _rx_dsp = _mboard[MBOARD_PROP_RX_DSP];
+        _tx_dsp = _mboard[MBOARD_PROP_TX_DSP];
 
         //extract rx subdevice
         wax::obj rx_dboard = _mboard[MBOARD_PROP_RX_DBOARD];
@@ -86,7 +76,7 @@ public:
     }
 
     void issue_stream_cmd(const stream_cmd_t &stream_cmd){
-        _rx_ddc[std::string("stream_cmd")] = stream_cmd;
+        _mboard[MBOARD_PROP_STREAM_CMD] = stream_cmd;
     }
 
     void set_clock_config(const clock_config_t &clock_config){
@@ -101,21 +91,15 @@ public:
      * RX methods
      ******************************************************************/
     void set_rx_rate(double rate){
-        double samp_rate = _rx_ddc[std::string("if_rate")].as<double>();
-        assert_has(get_rx_rates(), rate, "simple device rx rate");
-        _rx_ddc[std::string("decim")] = size_t(samp_rate/rate);
+        _rx_dsp[DSP_PROP_HOST_RATE] = rate;
     }
 
     double get_rx_rate(void){
-        return _rx_ddc[std::string("bb_rate")].as<double>();
-    }
-
-    std::vector<double> get_rx_rates(void){
-        return get_xx_rates(_rx_ddc[std::string("decims")], _rx_ddc[std::string("if_rate")]);
+        return _rx_dsp[DSP_PROP_HOST_RATE].as<double>();
     }
 
     tune_result_t set_rx_freq(double target_freq){
-        return tune_rx_subdev_and_ddc(_rx_subdev, _rx_ddc, target_freq);
+        return tune_rx_subdev_and_ddc(_rx_subdev, _rx_dsp, target_freq);
     }
 
     freq_range_t get_rx_freq_range(void){
@@ -150,21 +134,15 @@ public:
      * TX methods
      ******************************************************************/
     void set_tx_rate(double rate){
-        double samp_rate = _tx_duc[std::string("if_rate")].as<double>();
-        assert_has(get_tx_rates(), rate, "simple device tx rate");
-        _tx_duc[std::string("interp")] = size_t(samp_rate/rate);
+        _tx_dsp[DSP_PROP_HOST_RATE] = rate;
     }
 
     double get_tx_rate(void){
-        return _tx_duc[std::string("bb_rate")].as<double>();
-    }
-
-    std::vector<double> get_tx_rates(void){
-        return get_xx_rates(_tx_duc[std::string("interps")], _tx_duc[std::string("if_rate")]);
+        return _tx_dsp[DSP_PROP_HOST_RATE].as<double>();
     }
 
     tune_result_t set_tx_freq(double target_freq){
-        return tune_tx_subdev_and_duc(_tx_subdev, _tx_duc, target_freq);
+        return tune_tx_subdev_and_duc(_tx_subdev, _tx_dsp, target_freq);
     }
 
     freq_range_t get_tx_freq_range(void){
@@ -198,8 +176,8 @@ public:
 private:
     device::sptr _dev;
     wax::obj _mboard;
-    wax::obj _rx_ddc;
-    wax::obj _tx_duc;
+    wax::obj _rx_dsp;
+    wax::obj _tx_dsp;
     wax::obj _rx_subdev;
     wax::obj _tx_subdev;
 };
diff --git a/host/lib/usrp/tune_helper.cpp b/host/lib/usrp/tune_helper.cpp
index 79a6aff7b..2fb15064c 100644
--- a/host/lib/usrp/tune_helper.cpp
+++ b/host/lib/usrp/tune_helper.cpp
@@ -18,6 +18,7 @@
 #include <uhd/usrp/tune_helper.hpp>
 #include <uhd/utils/algorithm.hpp>
 #include <uhd/usrp/subdev_props.hpp>
+#include <uhd/usrp/dsp_props.hpp>
 #include <cmath>
 
 using namespace uhd;
@@ -34,8 +35,8 @@ static tune_result_t tune_xx_subdev_and_dxc(
     wax::obj subdev_freq_proxy = subdev[SUBDEV_PROP_FREQ];
     bool subdev_quadrature = subdev[SUBDEV_PROP_QUADRATURE].as<bool>();
     bool subdev_spectrum_inverted = subdev[SUBDEV_PROP_SPECTRUM_INVERTED].as<bool>();
-    wax::obj dxc_freq_proxy = dxc[std::string("freq")];
-    double dxc_sample_rate = dxc[std::string("if_rate")].as<double>();
+    wax::obj dxc_freq_proxy = dxc[DSP_PROP_FREQ_SHIFT];
+    double dxc_sample_rate = dxc[DSP_PROP_CODEC_RATE].as<double>();
 
     // Ask the d'board to tune as closely as it can to target_freq+lo_offset
     double target_inter_freq = target_freq + lo_offset;
@@ -96,8 +97,8 @@ tune_result_t uhd::usrp::tune_rx_subdev_and_ddc(
 ){
     double lo_offset = 0.0;
     //if the local oscillator will be in the passband, use an offset
-    if (subdev[SUBDEV_PROP_LO_INTERFERES].as<bool>()){
-        lo_offset = 2.0*ddc[std::string("bb_rate")].as<double>();
+    if (subdev[SUBDEV_PROP_USE_LO_OFFSET].as<bool>()){
+        lo_offset = 2.0*ddc[DSP_PROP_HOST_RATE].as<double>();
     }
     return tune_rx_subdev_and_ddc(subdev, ddc, target_freq, lo_offset);
 }
@@ -119,8 +120,8 @@ tune_result_t uhd::usrp::tune_tx_subdev_and_duc(
 ){
     double lo_offset = 0.0;
     //if the local oscillator will be in the passband, use an offset
-    if (subdev[SUBDEV_PROP_LO_INTERFERES].as<bool>()){
-        lo_offset = 2.0*duc[std::string("bb_rate")].as<double>();
+    if (subdev[SUBDEV_PROP_USE_LO_OFFSET].as<bool>()){
+        lo_offset = 2.0*duc[DSP_PROP_HOST_RATE].as<double>();
     }
     return tune_tx_subdev_and_duc(subdev, duc, target_freq, lo_offset);
 }
diff --git a/host/lib/usrp/usrp2/dboard_impl.cpp b/host/lib/usrp/usrp2/dboard_impl.cpp
index 30883cd50..d1515f2d5 100644
--- a/host/lib/usrp/usrp2/dboard_impl.cpp
+++ b/host/lib/usrp/usrp2/dboard_impl.cpp
@@ -49,11 +49,11 @@ void usrp2_impl::dboard_init(void){
     );
 
     //load dboards
-    _rx_dboards[""] = wax_obj_proxy::make(
+    _rx_dboard_proxy = wax_obj_proxy::make(
         boost::bind(&usrp2_impl::rx_dboard_get, this, _1, _2),
         boost::bind(&usrp2_impl::rx_dboard_set, this, _1, _2)
     );
-    _tx_dboards[""] = wax_obj_proxy::make(
+    _tx_dboard_proxy = wax_obj_proxy::make(
         boost::bind(&usrp2_impl::tx_dboard_get, this, _1, _2),
         boost::bind(&usrp2_impl::tx_dboard_set, this, _1, _2)
     );
@@ -81,7 +81,7 @@ void usrp2_impl::update_rx_mux_config(void){
         rx_mux = (((rx_mux >> 0) & 0x3) << 2) | (((rx_mux >> 2) & 0x3) << 0);
     }
 
-    this->poke(FR_DSP_RX_MUX, rx_mux);
+    this->poke32(FR_DSP_RX_MUX, rx_mux);
 }
 
 void usrp2_impl::update_tx_mux_config(void){
@@ -94,7 +94,7 @@ void usrp2_impl::update_tx_mux_config(void){
         tx_mux = (((tx_mux >> 0) & 0x1) << 1) | (((tx_mux >> 1) & 0x1) << 0);
     }
 
-    this->poke(FR_DSP_TX_MUX, tx_mux);
+    this->poke32(FR_DSP_TX_MUX, tx_mux);
 }
 
 /***********************************************************************
diff --git a/host/lib/usrp/usrp2/dboard_interface.cpp b/host/lib/usrp/usrp2/dboard_interface.cpp
index 2e79381c5..6dd756420 100644
--- a/host/lib/usrp/usrp2/dboard_interface.cpp
+++ b/host/lib/usrp/usrp2/dboard_interface.cpp
@@ -48,17 +48,7 @@ private:
     );
 
     usrp2_impl *_impl;
-
-    //shadows
     boost::uint32_t _ddr_shadow;
-    uhd::dict<atr_reg_t, boost::uint32_t> _atr_reg_shadows;
-
-    //utilities
-    static int bank_to_shift(gpio_bank_t bank){
-        static const uhd::dict<gpio_bank_t, int> _bank_to_shift = \
-        boost::assign::map_list_of(GPIO_BANK_RX, 0)(GPIO_BANK_TX, 16);
-        return _bank_to_shift[bank];
-    }
 };
 
 /***********************************************************************
@@ -74,6 +64,14 @@ dboard_interface::sptr make_usrp2_dboard_interface(usrp2_impl *impl){
 usrp2_dboard_interface::usrp2_dboard_interface(usrp2_impl *impl){
     _impl = impl;
     _ddr_shadow = 0;
+
+    //set the selection mux to use atr
+    boost::uint32_t new_sels = 0x0;
+    for(size_t i = 0; i < 16; i++){
+        new_sels |= FRF_GPIO_SEL_ATR << (i*2);
+    }
+    _impl->poke32(FR_GPIO_TX_SEL, new_sels);
+    _impl->poke32(FR_GPIO_RX_SEL, new_sels);
 }
 
 usrp2_dboard_interface::~usrp2_dboard_interface(void){
@@ -94,43 +92,44 @@ double usrp2_dboard_interface::get_tx_clock_rate(void){
 /***********************************************************************
  * GPIO
  **********************************************************************/
+static int bank_to_shift(dboard_interface::gpio_bank_t bank){
+    switch(bank){
+    case dboard_interface::GPIO_BANK_RX: return 0;
+    case dboard_interface::GPIO_BANK_TX: return 16;
+    }
+    throw std::runtime_error("unknown gpio bank type");
+}
+
 void usrp2_dboard_interface::set_gpio_ddr(gpio_bank_t bank, boost::uint16_t value){
-    //calculate the new 32 bit ddr value
-    int shift = bank_to_shift(bank);
-    boost::uint32_t new_ddr_val =
-        (_ddr_shadow & ~(boost::uint32_t(0xffff) << shift)) //zero out new bits
-        | (boost::uint32_t(value) << shift); //or'ed in the new bits
-
-    //poke in the value and shadow
-    _impl->poke(FR_GPIO_DDR, new_ddr_val);
-    _ddr_shadow = new_ddr_val;
+    _ddr_shadow = \
+        (_ddr_shadow & ~(0xffff << bank_to_shift(bank))) |
+        (boost::uint32_t(value) << bank_to_shift(bank));
+    _impl->poke32(FR_GPIO_DDR, _ddr_shadow);
 }
 
 boost::uint16_t usrp2_dboard_interface::read_gpio(gpio_bank_t bank){
-    boost::uint32_t data = _impl->peek(FR_GPIO_IO);
-    return boost::uint16_t(data >> bank_to_shift(bank));
+    return boost::uint16_t(_impl->peek32(FR_GPIO_IO) >> bank_to_shift(bank));
 }
 
-void usrp2_dboard_interface::set_atr_reg(gpio_bank_t bank, atr_reg_t reg, boost::uint16_t value){
-    //map the atr reg to an offset in register space
-    static const uhd::dict<atr_reg_t, int> reg_to_addr = boost::assign::map_list_of
-        (ATR_REG_IDLE, FR_ATR_IDLE) (ATR_REG_TX_ONLY, FR_ATR_TX)
-        (ATR_REG_RX_ONLY, FR_ATR_RX) (ATR_REG_FULL_DUPLEX, FR_ATR_FULL)
+void usrp2_dboard_interface::set_atr_reg(gpio_bank_t bank, atr_reg_t atr, boost::uint16_t value){
+    //define mapping of bank to atr regs to register address
+    static const uhd::dict<
+        gpio_bank_t, uhd::dict<atr_reg_t, boost::uint32_t>
+    > bank_to_atr_to_addr = boost::assign::map_list_of
+        (GPIO_BANK_RX, boost::assign::map_list_of
+            (ATR_REG_IDLE,        FR_ATR_IDLE_RXSIDE)
+            (ATR_REG_TX_ONLY,     FR_ATR_INTX_RXSIDE)
+            (ATR_REG_RX_ONLY,     FR_ATR_INRX_RXSIDE)
+            (ATR_REG_FULL_DUPLEX, FR_ATR_FULL_RXSIDE)
+        )
+        (GPIO_BANK_TX, boost::assign::map_list_of
+            (ATR_REG_IDLE,        FR_ATR_IDLE_TXSIDE)
+            (ATR_REG_TX_ONLY,     FR_ATR_INTX_TXSIDE)
+            (ATR_REG_RX_ONLY,     FR_ATR_INRX_TXSIDE)
+            (ATR_REG_FULL_DUPLEX, FR_ATR_FULL_TXSIDE)
+        )
     ;
-    ASSERT_THROW(reg_to_addr.has_key(reg));
-
-    //ensure a value exists in the shadow
-    if (not _atr_reg_shadows.has_key(reg)) _atr_reg_shadows[reg] = 0;
-
-    //calculate the new 32 bit atr value
-    int shift = bank_to_shift(bank);
-    boost::uint32_t new_atr_val =
-        (_atr_reg_shadows[reg] & ~(boost::uint32_t(0xffff) << shift)) //zero out new bits
-        | (boost::uint32_t(value) << shift); //or'ed in the new bits
-
-    //poke in the value and shadow
-    _impl->poke(reg_to_addr[reg], new_atr_val);
-    _atr_reg_shadows[reg] = new_atr_val;
+    _impl->poke16(bank_to_atr_to_addr[bank][atr], value);
 }
 
 /***********************************************************************
diff --git a/host/lib/usrp/usrp2/dsp_impl.cpp b/host/lib/usrp/usrp2/dsp_impl.cpp
index d70248682..92b55d029 100644
--- a/host/lib/usrp/usrp2/dsp_impl.cpp
+++ b/host/lib/usrp/usrp2/dsp_impl.cpp
@@ -54,9 +54,19 @@ static boost::uint32_t calculate_iq_scale_word(boost::int16_t i, boost::int16_t
     return (boost::uint16_t(i) << 16) | (boost::uint16_t(q) << 0);
 }
 
+template <class rate_t> static rate_t
+pick_closest_rate(double exact_rate, const std::vector<rate_t> &rates){
+    rate_t closest_match = rates.at(0);
+    BOOST_FOREACH(rate_t possible_rate, rates){
+        if(std::abs(exact_rate - possible_rate) < std::abs(exact_rate - closest_match))
+            closest_match = possible_rate;
+    }
+    return closest_match;
+}
+
 void usrp2_impl::init_ddc_config(void){
     //create the ddc in the rx dsp dict
-    _rx_dsps["ddc0"] = wax_obj_proxy::make(
+    _rx_dsp_proxy = wax_obj_proxy::make(
         boost::bind(&usrp2_impl::ddc_get, this, _1, _2),
         boost::bind(&usrp2_impl::ddc_set, this, _1, _2)
     );
@@ -67,124 +77,71 @@ void usrp2_impl::init_ddc_config(void){
     update_ddc_config();
 
     //initial command that kills streaming (in case if was left on)
-    stream_cmd_t stream_cmd_off;
-    stream_cmd_off.stream_now = true;
-    stream_cmd_off.continuous = false;
-    stream_cmd_off.num_samps = 0;
-    issue_ddc_stream_cmd(stream_cmd_off);
+    issue_ddc_stream_cmd(stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
 }
 
 void usrp2_impl::update_ddc_config(void){
     //set the decimation
-    this->poke(FR_DSP_RX_DECIM_RATE, _ddc_decim);
+    this->poke32(FR_DSP_RX_DECIM_RATE, _ddc_decim);
 
     //set the scaling
     static const boost::int16_t default_rx_scale_iq = 1024;
-    this->poke(FR_DSP_RX_SCALE_IQ,
+    this->poke32(FR_DSP_RX_SCALE_IQ,
         calculate_iq_scale_word(default_rx_scale_iq, default_rx_scale_iq)
     );
 }
 
-void usrp2_impl::issue_ddc_stream_cmd(const stream_cmd_t &stream_cmd){
-    //setup the out data
-    usrp2_ctrl_data_t out_data;
-    out_data.id = htonl(USRP2_CTRL_ID_SEND_STREAM_COMMAND_FOR_ME_BRO);
-    out_data.data.stream_cmd.now = (stream_cmd.stream_now)? 1 : 0;
-    out_data.data.stream_cmd.continuous = (stream_cmd.continuous)? 1 : 0;
-    out_data.data.stream_cmd.secs = htonl(stream_cmd.time_spec.secs);
-    out_data.data.stream_cmd.ticks = htonl(stream_cmd.time_spec.ticks);
-    out_data.data.stream_cmd.num_samps = htonl(stream_cmd.num_samps);
-
-    //send and recv
-    usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_GOT_THAT_STREAM_COMMAND_DUDE);
-}
-
 /***********************************************************************
  * DDC Properties
  **********************************************************************/
 void usrp2_impl::ddc_get(const wax::obj &key, wax::obj &val){
-    //handle the case where the key is an expected dsp property
-    if (key.type() == typeid(dsp_prop_t)){
-        switch(key.as<dsp_prop_t>()){
-        case DSP_PROP_NAME:
-            val = std::string("usrp2 ddc0");
-            return;
-
-        case DSP_PROP_OTHERS:{
-                prop_names_t others = boost::assign::list_of
-                    ("if_rate")
-                    ("bb_rate")
-                    ("decim")
-                    ("decims")
-                    ("freq")
-                    ("stream_cmd")
-                ;
-                val = others;
-            }
-            return;
-        }
-    }
-
-    //handle string-based properties specific to this dsp
-    std::string key_name = key.as<std::string>();
-    if (key_name == "if_rate"){
-        val = get_master_clock_freq();
+    switch(key.as<dsp_prop_t>()){
+    case DSP_PROP_NAME:
+        val = std::string("usrp2 ddc0");
         return;
-    }
-    else if (key_name == "bb_rate"){
-        val = get_master_clock_freq()/_ddc_decim;
+
+    case DSP_PROP_OTHERS:
+        val = prop_names_t(); //empty
         return;
-    }
-    else if (key_name == "decim"){
-        val = _ddc_decim;
+
+    case DSP_PROP_FREQ_SHIFT:
+        val = _ddc_freq;
         return;
-    }
-    else if (key_name == "decims"){
-        val = _allowed_decim_and_interp_rates;
+
+    case DSP_PROP_CODEC_RATE:
+        val = get_master_clock_freq();
         return;
-    }
-    else if (key_name == "freq"){
-        val = _ddc_freq;
+
+    case DSP_PROP_HOST_RATE:
+        val = get_master_clock_freq()/_ddc_decim;
         return;
     }
-
-    throw std::invalid_argument(str(
-        boost::format("error getting: unknown key with name %s") % key_name
-    ));
 }
 
 void usrp2_impl::ddc_set(const wax::obj &key, const wax::obj &val){
-    //handle string-based properties specific to this dsp
-    std::string key_name = key.as<std::string>();
-    if (key_name == "decim"){
-        size_t new_decim = val.as<size_t>();
-        assert_has(
-            _allowed_decim_and_interp_rates,
-            new_decim, "usrp2 decimation"
-        );
-        _ddc_decim = new_decim; //shadow
-        update_ddc_config();
-        return;
-    }
-    else if (key_name == "freq"){
-        double new_freq = val.as<double>();
-        ASSERT_THROW(new_freq <= get_master_clock_freq()/2.0);
-        ASSERT_THROW(new_freq >= -get_master_clock_freq()/2.0);
-        _ddc_freq = new_freq; //shadow
-        this->poke(FR_DSP_RX_FREQ,
-            calculate_freq_word_and_update_actual_freq(_ddc_freq, get_master_clock_freq())
-        );
+    switch(key.as<dsp_prop_t>()){
+
+    case DSP_PROP_FREQ_SHIFT:{
+            double new_freq = val.as<double>();
+            ASSERT_THROW(new_freq <= get_master_clock_freq()/2.0);
+            ASSERT_THROW(new_freq >= -get_master_clock_freq()/2.0);
+            _ddc_freq = new_freq; //shadow
+            this->poke32(FR_DSP_RX_FREQ,
+                calculate_freq_word_and_update_actual_freq(_ddc_freq, get_master_clock_freq())
+            );
+        }
         return;
-    }
-    else if (key_name == "stream_cmd"){
-        issue_ddc_stream_cmd(val.as<stream_cmd_t>());
+
+    case DSP_PROP_HOST_RATE:{
+            double extact_rate = get_master_clock_freq()/val.as<double>();
+            _ddc_decim = pick_closest_rate(extact_rate, _allowed_decim_and_interp_rates);
+            update_ddc_config();
+        }
         return;
-    }
 
-    throw std::invalid_argument(str(
-        boost::format("error setting: unknown key with name %s") % key_name
-    ));
+    default:
+        throw std::runtime_error("Error: trying to set read-only property on usrp2 ddc0");
+    }
 }
 
 /***********************************************************************
@@ -192,7 +149,7 @@ void usrp2_impl::ddc_set(const wax::obj &key, const wax::obj &val){
  **********************************************************************/
 void usrp2_impl::init_duc_config(void){
     //create the duc in the tx dsp dict
-    _tx_dsps["duc0"] = wax_obj_proxy::make(
+    _tx_dsp_proxy = wax_obj_proxy::make(
         boost::bind(&usrp2_impl::duc_get, this, _1, _2),
         boost::bind(&usrp2_impl::duc_set, this, _1, _2)
     );
@@ -213,90 +170,61 @@ void usrp2_impl::update_duc_config(void){
     boost::int16_t scale = rint((4096*std::pow(2, ceil(log2(interp_cubed))))/(1.65*interp_cubed));
 
     //set the interpolation
-    this->poke(FR_DSP_TX_INTERP_RATE, _ddc_decim);
+    this->poke32(FR_DSP_TX_INTERP_RATE, _ddc_decim);
 
     //set the scaling
-    this->poke(FR_DSP_TX_SCALE_IQ, calculate_iq_scale_word(scale, scale));
+    this->poke32(FR_DSP_TX_SCALE_IQ, calculate_iq_scale_word(scale, scale));
 }
 
 /***********************************************************************
  * DUC Properties
  **********************************************************************/
 void usrp2_impl::duc_get(const wax::obj &key, wax::obj &val){
-    //handle the case where the key is an expected dsp property
-    if (key.type() == typeid(dsp_prop_t)){
-        switch(key.as<dsp_prop_t>()){
-        case DSP_PROP_NAME:
-            val = std::string("usrp2 duc0");
-            return;
-
-        case DSP_PROP_OTHERS:{
-                prop_names_t others = boost::assign::list_of
-                    ("if_rate")
-                    ("bb_rate")
-                    ("interp")
-                    ("interps")
-                    ("freq")
-                ;
-                val = others;
-            }
-            return;
-        }
-    }
-
-    //handle string-based properties specific to this dsp
-    std::string key_name = key.as<std::string>();
-    if (key_name == "if_rate"){
-        val = get_master_clock_freq();
+    switch(key.as<dsp_prop_t>()){
+    case DSP_PROP_NAME:
+        val = std::string("usrp2 duc0");
         return;
-    }
-    else if (key_name == "bb_rate"){
-        val = get_master_clock_freq()/_duc_interp;
+
+    case DSP_PROP_OTHERS:
+        val = prop_names_t(); //empty
         return;
-    }
-    else if (key_name == "interp"){
-        val = _duc_interp;
+
+    case DSP_PROP_FREQ_SHIFT:
+        val = _duc_freq;
         return;
-    }
-    else if (key_name == "interps"){
-        val = _allowed_decim_and_interp_rates;
+
+    case DSP_PROP_CODEC_RATE:
+        val = get_master_clock_freq();
         return;
-    }
-    else if (key_name == "freq"){
-        val = _duc_freq;
+
+    case DSP_PROP_HOST_RATE:
+        val = get_master_clock_freq()/_duc_interp;
         return;
     }
-
-    throw std::invalid_argument(str(
-        boost::format("error getting: unknown key with name %s") % key_name
-    ));
 }
 
 void usrp2_impl::duc_set(const wax::obj &key, const wax::obj &val){
-    //handle string-based properties specific to this dsp
-    std::string key_name = key.as<std::string>();
-    if (key_name == "interp"){
-        size_t new_interp = val.as<size_t>();
-        assert_has(
-            _allowed_decim_and_interp_rates,
-            new_interp, "usrp2 interpolation"
-        );
-        _duc_interp = new_interp; //shadow
-        update_duc_config();
+    switch(key.as<dsp_prop_t>()){
+
+    case DSP_PROP_FREQ_SHIFT:{
+            double new_freq = val.as<double>();
+            ASSERT_THROW(new_freq <= get_master_clock_freq()/2.0);
+            ASSERT_THROW(new_freq >= -get_master_clock_freq()/2.0);
+            _duc_freq = new_freq; //shadow
+            this->poke32(FR_DSP_TX_FREQ,
+                calculate_freq_word_and_update_actual_freq(_duc_freq, get_master_clock_freq())
+            );
+        }
         return;
-    }
-    else if (key_name == "freq"){
-        double new_freq = val.as<double>();
-        ASSERT_THROW(new_freq <= get_master_clock_freq()/2.0);
-        ASSERT_THROW(new_freq >= -get_master_clock_freq()/2.0);
-        _duc_freq = new_freq; //shadow
-        this->poke(FR_DSP_TX_FREQ,
-            calculate_freq_word_and_update_actual_freq(_duc_freq, get_master_clock_freq())
-        );
+
+    case DSP_PROP_HOST_RATE:{
+            double extact_rate = get_master_clock_freq()/val.as<double>();
+            _duc_interp = pick_closest_rate(extact_rate, _allowed_decim_and_interp_rates);
+            update_duc_config();
+        }
         return;
-    }
 
-    throw std::invalid_argument(str(
-        boost::format("error setting: unknown key with name %s") % key_name
-    ));
+    default:
+        throw std::runtime_error("Error: trying to set read-only property on usrp2 duc0");
+    }
 }
diff --git a/host/lib/usrp/usrp2/fw_common.h b/host/lib/usrp/usrp2/fw_common.h
index c168614ee..019f3b931 100644
--- a/host/lib/usrp/usrp2/fw_common.h
+++ b/host/lib/usrp/usrp2/fw_common.h
@@ -129,7 +129,8 @@ typedef struct{
         struct {
             _SINS_ uint8_t now; //stream now?
             _SINS_ uint8_t continuous; //auto-reload commmands?
-            _SINS_ uint8_t _pad[2];
+            _SINS_ uint8_t chain;
+            _SINS_ uint8_t _pad[1];
             _SINS_ uint32_t secs;
             _SINS_ uint32_t ticks;
             _SINS_ uint32_t num_samps;
@@ -137,6 +138,7 @@ typedef struct{
         struct {
             _SINS_ uint32_t addr;
             _SINS_ uint32_t data;
+            _SINS_ uint8_t num_bytes; //1, 2, 4
         } poke_args;
     } data;
 } usrp2_ctrl_data_t;
diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp
index c87884ebb..a58e32619 100644
--- a/host/lib/usrp/usrp2/io_impl.cpp
+++ b/host/lib/usrp/usrp2/io_impl.cpp
@@ -171,15 +171,21 @@ void usrp2_impl::recv_raw(rx_metadata_t &metadata){
  **********************************************************************/
 size_t usrp2_impl::send(
     const asio::const_buffer &buff,
-    const tx_metadata_t &metadata,
+    const tx_metadata_t &metadata_,
     const io_type_t &io_type
 ){
+    tx_metadata_t metadata = metadata_; //rw copy to change later
+
     boost::uint32_t tx_mem[_mtu/sizeof(boost::uint32_t)];
     size_t num_samps = std::min(
         asio::buffer_size(buff)/io_type.size,
         size_t(_max_tx_samples_per_packet)
     );
 
+    //kill the end of burst flag if this is a fragment
+    if (asio::buffer_size(buff)/io_type.size < num_samps)
+        metadata.end_of_burst = false;
+
     size_t num_header_words32, num_packet_words32;
     size_t packet_count = _tx_stream_id_to_packet_seq[metadata.stream_id]++;
 
@@ -222,12 +228,12 @@ size_t usrp2_impl::recv(
 ){
     //perform a receive if no rx data is waiting to be copied
     if (asio::buffer_size(_rx_copy_buff) == 0){
+        _fragment_offset_in_samps = 0;
         recv_raw(metadata);
     }
     //otherwise flag the metadata to show that is is a fragment
     else{
         metadata = rx_metadata_t();
-        metadata.is_fragment = true;
     }
 
     //extract the number of samples available to copy
@@ -240,6 +246,11 @@ size_t usrp2_impl::recv(
     );
     const boost::uint32_t *items = asio::buffer_cast<const boost::uint32_t*>(_rx_copy_buff);
 
+    //setup the fragment flags and offset
+    metadata.more_fragments = asio::buffer_size(buff)/io_type.size < num_samps;
+    metadata.fragment_offset = _fragment_offset_in_samps;
+    _fragment_offset_in_samps += num_samps; //set for next time
+
     //copy the samples from the recv buffer
     switch(io_type.tid){
     case io_type_t::COMPLEX_FLOAT32:
diff --git a/host/lib/usrp/usrp2/mboard_impl.cpp b/host/lib/usrp/usrp2/mboard_impl.cpp
index 7594c85fa..94ab88a6b 100644
--- a/host/lib/usrp/usrp2/mboard_impl.cpp
+++ b/host/lib/usrp/usrp2/mboard_impl.cpp
@@ -29,7 +29,7 @@ using namespace uhd::usrp;
  * Helper Methods
  **********************************************************************/
 void usrp2_impl::mboard_init(void){
-    _mboards[""] = wax_obj_proxy::make(
+    _mboard_proxy = wax_obj_proxy::make(
         boost::bind(&usrp2_impl::mboard_get, this, _1, _2),
         boost::bind(&usrp2_impl::mboard_set, this, _1, _2)
     );
@@ -67,19 +67,56 @@ void usrp2_impl::update_clock_config(void){
     }
 
     //set the pps flags
-    this->poke(FR_TIME64_FLAGS, pps_flags);
+    this->poke32(FR_TIME64_FLAGS, pps_flags);
 
     //TODO clock source ref 10mhz (spi ad9510)
 }
 
 void usrp2_impl::set_time_spec(const time_spec_t &time_spec, bool now){
     //set ticks and seconds
-    this->poke(FR_TIME64_SECS, time_spec.secs);
-    this->poke(FR_TIME64_TICKS, time_spec.ticks);
+    this->poke32(FR_TIME64_SECS, time_spec.secs);
+    this->poke32(FR_TIME64_TICKS, time_spec.ticks);
 
     //set the register to latch it all in
     boost::uint32_t imm_flags = (now)? FRF_TIME64_LATCH_NOW : FRF_TIME64_LATCH_NEXT_PPS;
-    this->poke(FR_TIME64_IMM, imm_flags);
+    this->poke32(FR_TIME64_IMM, imm_flags);
+}
+
+void usrp2_impl::issue_ddc_stream_cmd(const stream_cmd_t &stream_cmd){
+    //setup the out data
+    usrp2_ctrl_data_t out_data;
+    out_data.id = htonl(USRP2_CTRL_ID_SEND_STREAM_COMMAND_FOR_ME_BRO);
+    out_data.data.stream_cmd.now = (stream_cmd.stream_now)? 1 : 0;
+    out_data.data.stream_cmd.secs = htonl(stream_cmd.time_spec.secs);
+    out_data.data.stream_cmd.ticks = htonl(stream_cmd.time_spec.ticks);
+
+    //set these to defaults, then change in the switch statement
+    out_data.data.stream_cmd.continuous = 0;
+    out_data.data.stream_cmd.chain = 0;
+    out_data.data.stream_cmd.num_samps = htonl(stream_cmd.num_samps);
+
+    //setup chain, num samps, and continuous below
+    switch(stream_cmd.stream_mode){
+    case stream_cmd_t::STREAM_MODE_START_CONTINUOUS:
+        out_data.data.stream_cmd.continuous = 1;
+        break;
+
+    case stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS:
+        out_data.data.stream_cmd.num_samps = htonl(0);
+        break;
+
+    case stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE:
+        //all set by defaults above
+        break;
+
+    case stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_MORE:
+        out_data.data.stream_cmd.chain = 1;
+        break;
+    }
+
+    //send and recv
+    usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
+    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_GOT_THAT_STREAM_COMMAND_DUDE);
 }
 
 /***********************************************************************
@@ -136,21 +173,21 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_RX_DBOARD:
-        ASSERT_THROW(_rx_dboards.has_key(name));
-        val = _rx_dboards[name]->get_link();
+        ASSERT_THROW(name == "");
+        val = _rx_dboard_proxy->get_link();
         return;
 
     case MBOARD_PROP_RX_DBOARD_NAMES:
-        val = prop_names_t(_rx_dboards.get_keys());
+        val = prop_names_t(1, "");
         return;
 
     case MBOARD_PROP_TX_DBOARD:
-        ASSERT_THROW(_tx_dboards.has_key(name));
-        val = _tx_dboards[name]->get_link();
+        ASSERT_THROW(name == "");
+        val = _tx_dboard_proxy->get_link();
         return;
 
     case MBOARD_PROP_TX_DBOARD_NAMES:
-        val = prop_names_t(_tx_dboards.get_keys());
+        val = prop_names_t(1, "");
         return;
 
     case MBOARD_PROP_CLOCK_RATE:
@@ -158,29 +195,28 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_RX_DSP:
-        ASSERT_THROW(_rx_dsps.has_key(name));
-        val = _rx_dsps[name]->get_link();
+        ASSERT_THROW(name == "");
+        val = _rx_dsp_proxy->get_link();
         return;
 
     case MBOARD_PROP_RX_DSP_NAMES:
-        val = prop_names_t(_rx_dsps.get_keys());
+        val = prop_names_t(1, "");
         return;
 
     case MBOARD_PROP_TX_DSP:
-        ASSERT_THROW(_tx_dsps.has_key(name));
-        val = _tx_dsps[name]->get_link();
+        ASSERT_THROW(name == "");
+        val = _tx_dsp_proxy->get_link();
         return;
 
     case MBOARD_PROP_TX_DSP_NAMES:
-        val = prop_names_t(_tx_dsps.get_keys());
+        val = prop_names_t(1, "");
         return;
 
     case MBOARD_PROP_CLOCK_CONFIG:
         val = _clock_config;
         return;
 
-    case MBOARD_PROP_TIME_NOW:
-    case MBOARD_PROP_TIME_NEXT_PPS:
+    default:
         throw std::runtime_error("Error: trying to get write-only property on usrp2 mboard");
 
     }
@@ -226,27 +262,19 @@ void usrp2_impl::mboard_set(const wax::obj &key, const wax::obj &val){
         update_clock_config();
         return;
 
-    case MBOARD_PROP_TIME_NOW:{
+    case MBOARD_PROP_TIME_NOW:
         set_time_spec(val.as<time_spec_t>(), true);
         return;
-    }
 
-    case MBOARD_PROP_TIME_NEXT_PPS:{
+    case MBOARD_PROP_TIME_NEXT_PPS:
         set_time_spec(val.as<time_spec_t>(), false);
         return;
-    }
 
-    case MBOARD_PROP_NAME:
-    case MBOARD_PROP_OTHERS:
-    case MBOARD_PROP_CLOCK_RATE:
-    case MBOARD_PROP_RX_DSP:
-    case MBOARD_PROP_RX_DSP_NAMES:
-    case MBOARD_PROP_TX_DSP:
-    case MBOARD_PROP_TX_DSP_NAMES:
-    case MBOARD_PROP_RX_DBOARD:
-    case MBOARD_PROP_RX_DBOARD_NAMES:
-    case MBOARD_PROP_TX_DBOARD:
-    case MBOARD_PROP_TX_DBOARD_NAMES:
+    case MBOARD_PROP_STREAM_CMD:
+        issue_ddc_stream_cmd(val.as<stream_cmd_t>());
+        return;
+
+    default:
         throw std::runtime_error("Error: trying to set read-only property on usrp2 mboard");
 
     }
diff --git a/host/lib/usrp/usrp2/usrp2_impl.cpp b/host/lib/usrp/usrp2/usrp2_impl.cpp
index b3a22e175..a7be2da8c 100644
--- a/host/lib/usrp/usrp2/usrp2_impl.cpp
+++ b/host/lib/usrp/usrp2/usrp2_impl.cpp
@@ -174,28 +174,47 @@ double usrp2_impl::get_master_clock_freq(void){
     return 100e6;
 }
 
-void usrp2_impl::poke(boost::uint32_t addr, boost::uint32_t data){
+template <class T> void impl_poke(usrp2_impl *impl, boost::uint32_t addr, T data){
     //setup the out data
     usrp2_ctrl_data_t out_data;
     out_data.id = htonl(USRP2_CTRL_ID_POKE_THIS_REGISTER_FOR_ME_BRO);
     out_data.data.poke_args.addr = htonl(addr);
-    out_data.data.poke_args.data = htonl(data);
+    out_data.data.poke_args.data = htonl(boost::uint32_t(data));
+    out_data.data.poke_args.num_bytes = sizeof(T);
 
     //send and recv
-    usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
+    usrp2_ctrl_data_t in_data = impl->ctrl_send_and_recv(out_data);
     ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_OMG_POKED_REGISTER_SO_BAD_DUDE);
 }
 
-boost::uint32_t usrp2_impl::peek(boost::uint32_t addr){
+template <class T> T impl_peek(usrp2_impl *impl, boost::uint32_t addr){
     //setup the out data
     usrp2_ctrl_data_t out_data;
     out_data.id = htonl(USRP2_CTRL_ID_PEEK_AT_THIS_REGISTER_FOR_ME_BRO);
     out_data.data.poke_args.addr = htonl(addr);
+    out_data.data.poke_args.num_bytes = sizeof(T);
 
     //send and recv
-    usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
+    usrp2_ctrl_data_t in_data = impl->ctrl_send_and_recv(out_data);
     ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_WOAH_I_DEFINITELY_PEEKED_IT_DUDE);
-    return ntohl(out_data.data.poke_args.data);
+    return T(ntohl(out_data.data.poke_args.data));
+}
+
+
+void usrp2_impl::poke32(boost::uint32_t addr, boost::uint32_t data){
+    return impl_poke<boost::uint32_t>(this, addr, data);
+}
+
+boost::uint32_t usrp2_impl::peek32(boost::uint32_t addr){
+    return impl_peek<boost::uint32_t>(this, addr);
+}
+
+void usrp2_impl::poke16(boost::uint32_t addr, boost::uint16_t data){
+    return impl_poke<boost::uint16_t>(this, addr, data);
+}
+
+boost::uint16_t usrp2_impl::peek16(boost::uint32_t addr){
+    return impl_peek<boost::uint16_t>(this, addr);
 }
 
 /***********************************************************************
@@ -236,12 +255,12 @@ void usrp2_impl::get(const wax::obj &key_, wax::obj &val){
         return;
 
     case DEVICE_PROP_MBOARD:
-        ASSERT_THROW(_mboards.has_key(name));
-        val = _mboards[name]->get_link();
+        ASSERT_THROW(name == "");
+        val = _mboard_proxy->get_link();
         return;
 
     case DEVICE_PROP_MBOARD_NAMES:
-        val = prop_names_t(_mboards.get_keys());
+        val = prop_names_t(1, "");
         return;
 
     case DEVICE_PROP_MAX_RX_SAMPLES:
diff --git a/host/lib/usrp/usrp2/usrp2_impl.hpp b/host/lib/usrp/usrp2/usrp2_impl.hpp
index 55be420cd..baa6530b8 100644
--- a/host/lib/usrp/usrp2/usrp2_impl.hpp
+++ b/host/lib/usrp/usrp2/usrp2_impl.hpp
@@ -103,8 +103,11 @@ public:
     usrp2_ctrl_data_t ctrl_send_and_recv(const usrp2_ctrl_data_t &);
 
     //peek and poke registers
-    void poke(boost::uint32_t addr, boost::uint32_t data);
-    boost::uint32_t peek(boost::uint32_t addr);
+    void poke32(boost::uint32_t addr, boost::uint32_t data);
+    boost::uint32_t peek32(boost::uint32_t addr);
+
+    void poke16(boost::uint32_t addr, boost::uint16_t data);
+    boost::uint16_t peek16(boost::uint32_t addr);
 
     //misc access methods
     double get_master_clock_freq(void);
@@ -135,6 +138,7 @@ private:
     ;
     uhd::transport::smart_buffer::sptr _rx_smart_buff;
     boost::asio::const_buffer _rx_copy_buff;
+    size_t _fragment_offset_in_samps;
     void io_init(void);
 
     //udp transports for control and data
@@ -159,18 +163,18 @@ private:
     void mboard_init(void);
     void mboard_get(const wax::obj &, wax::obj &);
     void mboard_set(const wax::obj &, const wax::obj &);
-    uhd::dict<std::string, wax_obj_proxy::sptr> _mboards;
+    wax_obj_proxy::sptr _mboard_proxy;
 
     //properties interface for rx dboard
     void rx_dboard_get(const wax::obj &, wax::obj &);
     void rx_dboard_set(const wax::obj &, const wax::obj &);
-    uhd::dict<std::string, wax_obj_proxy::sptr> _rx_dboards;
+    wax_obj_proxy::sptr _rx_dboard_proxy;
     uhd::prop_names_t _rx_subdevs_in_use;
 
     //properties interface for tx dboard
     void tx_dboard_get(const wax::obj &, wax::obj &);
     void tx_dboard_set(const wax::obj &, const wax::obj &);
-    uhd::dict<std::string, wax_obj_proxy::sptr> _tx_dboards;
+    wax_obj_proxy::sptr _tx_dboard_proxy;
     uhd::prop_names_t _tx_subdevs_in_use;
     void update_rx_mux_config(void);
     void update_tx_mux_config(void);
@@ -192,12 +196,12 @@ private:
     //properties interface for ddc
     void ddc_get(const wax::obj &, wax::obj &);
     void ddc_set(const wax::obj &, const wax::obj &);
-    uhd::dict<std::string, wax_obj_proxy::sptr> _rx_dsps;
+    wax_obj_proxy::sptr _rx_dsp_proxy;
 
     //properties interface for duc
     void duc_get(const wax::obj &, wax::obj &);
     void duc_set(const wax::obj &, const wax::obj &);
-    uhd::dict<std::string, wax_obj_proxy::sptr> _tx_dsps;
+    wax_obj_proxy::sptr _tx_dsp_proxy;
 
 };
 
diff --git a/host/lib/usrp/usrp2/usrp2_regs.hpp b/host/lib/usrp/usrp2/usrp2_regs.hpp
index 10545d712..77d9f4ad9 100644
--- a/host/lib/usrp/usrp2/usrp2_regs.hpp
+++ b/host/lib/usrp/usrp2/usrp2_regs.hpp
@@ -175,11 +175,12 @@
 //
 // These go to the daughterboard i/o pins
 //
-#define _FR_GPIO_ADDR(off) (0xC800 + (off) * sizeof(boost::uint32_t))
-#define FR_GPIO_IO     _FR_GPIO_ADDR(0)       // tx data in high 16, rx in low 16
-#define FR_GPIO_DDR    _FR_GPIO_ADDR(1)       // 32 bits, 1 means output. tx in high 16, rx in low 16
-#define FR_GPIO_TX_SEL _FR_GPIO_ADDR(2)       // 16 2-bit fields select which source goes to TX DB
-#define FR_GPIO_RX_SEL _FR_GPIO_ADDR(3)       // 16 2-bit fields select which source goes to RX DB
+#define FR_GPIO_BASE 0xC800
+
+#define FR_GPIO_IO         FR_GPIO_BASE + 0  // 32 bits, gpio io pins (tx high 16 bits, rx low 16 bits)
+#define FR_GPIO_DDR        FR_GPIO_BASE + 4  // 32 bits, gpio ddr, 1 means output (tx high 16 bits, rx low 16 bits)
+#define FR_GPIO_TX_SEL     FR_GPIO_BASE + 8  // 16 2-bit fields select which source goes to TX DB
+#define FR_GPIO_RX_SEL     FR_GPIO_BASE + 12 // 16 2-bit fields select which source goes to RX DB
 
 // each 2-bit sel field is layed out this way
 #define FRF_GPIO_SEL_SW        0 // if pin is an output, set by software in the io reg
@@ -190,10 +191,15 @@
 ///////////////////////////////////////////////////
 // ATR Controller, Slave 11
 ////////////////////////////////////////////////
-#define _FR_ATR_ADDR(off) (0xE400 + (off) * sizeof(boost::uint32_t))
-#define FR_ATR_IDLE    _FR_ATR_ADDR(0) // tx data in high 16, rx in low 16
-#define FR_ATR_TX      _FR_ATR_ADDR(1)
-#define FR_ATR_RX      _FR_ATR_ADDR(2)
-#define FR_ATR_FULL    _FR_ATR_ADDR(3)
+#define FR_ATR_BASE  0xE400
+
+#define FR_ATR_IDLE_TXSIDE  FR_ATR_BASE + 0
+#define FR_ATR_IDLE_RXSIDE  FR_ATR_BASE + 2
+#define FR_ATR_INTX_TXSIDE  FR_ATR_BASE + 4
+#define FR_ATR_INTX_RXSIDE  FR_ATR_BASE + 6
+#define FR_ATR_INRX_TXSIDE  FR_ATR_BASE + 8
+#define FR_ATR_INRX_RXSIDE  FR_ATR_BASE + 10
+#define FR_ATR_FULL_TXSIDE  FR_ATR_BASE + 12
+#define FR_ATR_FULL_RXSIDE  FR_ATR_BASE + 14
 
 #endif /* INCLUDED_USRP2_REGS_HPP */
diff --git a/host/test/addr_test.cpp b/host/test/addr_test.cpp
index a5d2d4c06..2ec6de14b 100644
--- a/host/test/addr_test.cpp
+++ b/host/test/addr_test.cpp
@@ -50,16 +50,16 @@ BOOST_AUTO_TEST_CASE(test_device_addr){
     BOOST_CHECK_EQUAL(dev_addr.size(), new_dev_addr.size());
 
     //the keys should match
-    std::vector<std::string> old_dev_addr_keys = dev_addr.get_keys();
-    std::vector<std::string> new_dev_addr_keys = new_dev_addr.get_keys();
+    std::vector<std::string> old_dev_addr_keys = dev_addr.keys();
+    std::vector<std::string> new_dev_addr_keys = new_dev_addr.keys();
     BOOST_CHECK_EQUAL_COLLECTIONS(
         old_dev_addr_keys.begin(), old_dev_addr_keys.end(),
         new_dev_addr_keys.begin(), new_dev_addr_keys.end()
     );
 
     //the vals should match
-    std::vector<std::string> old_dev_addr_vals = dev_addr.get_vals();
-    std::vector<std::string> new_dev_addr_vals = new_dev_addr.get_vals();
+    std::vector<std::string> old_dev_addr_vals = dev_addr.vals();
+    std::vector<std::string> new_dev_addr_vals = new_dev_addr.vals();
     BOOST_CHECK_EQUAL_COLLECTIONS(
         old_dev_addr_vals.begin(), old_dev_addr_vals.end(),
         new_dev_addr_vals.begin(), new_dev_addr_vals.end()
diff --git a/host/test/gain_handler_test.cpp b/host/test/gain_handler_test.cpp
index 72d26e1c2..bf2ec5db7 100644
--- a/host/test/gain_handler_test.cpp
+++ b/host/test/gain_handler_test.cpp
@@ -70,7 +70,7 @@ private:
             return;
 
         case PROP_GAIN_NAMES:
-            val = _gain_values.get_keys();
+            val = _gain_values.keys();
             return;
         }
     }