19 changed files with 658 additions and 330 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -25,18 +25,41 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/572
 - HAL Devicehandlers: Periodic printout is run-time configurable now
 - `oneShotAction` flag in the `TestTask` class is not static anymore
- HAL Linux Uart: Baudrate and bits per word are enums now, avoiding misconfigurations
-  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/585
 - IPC Message Queue Handling: Allow passing an optional `MqArgs` argument into the MessageQueue
  creation call. It allows passing context information and an arbitrary user argument into
  the message queue. Also streamlined and simplified `MessageQueue` implementation for all OSALs
  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/583
- Clock: 
-  - `timeval` to `TimeOfDay_t`
-  - Added Mutex for gmtime calls: (compare http://www.opengate.at/blog/2020/01/timeless/)
-  - Moved the statics used by Clock in ClockCommon.cpp to this file
-  - Better check for leap seconds
-  - Added Unittests for Clock (only getter)
+
+### HAL
+
+- HAL Linux SPI: Set the Clock Default State when setting new SPI speed
+  and mode
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/573
+- GPIO HAL: `Direction`, `GpioOperation` and `Levels` are enum classes now, which prevents
+  name clashes with Windows defines.
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/572
+- HAL Linux Uart: Baudrate and bits per word are enums now, avoiding misconfigurations
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/585
+
+### Time
+
+PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/584 and
+https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/593
+
+- `timeval` to `TimeOfDay_t`
+- Added Mutex for gmtime calls: (compare http://www.opengate.at/blog/2020/01/timeless/)
+- Moved the statics used by Clock in ClockCommon.cpp to this file
+- Better check for leap seconds
+- Added Unittests for Clock (only getter)
+
+### Power 
+
+- `PowerSwitchIF`: Remove `const` specifier from `sendSwitchCommand` and `sendFuseOnCommand` and
+  also specify a `ReturnValue_t` return type
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/590
+- Extend `PowerSwitcher` module to optionally check current state when calling `turnOn` or
+  `turnOff`. Tis can be helpful to avoid commanding switches which do not need commanding
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/590

 ## Removed

@ -69,6 +92,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/594
 - Added ETL dependency and improved library dependency management
  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/592
+- Add a `DummyPowerSwitcher` module which can be useful for test setups when no PCDU is available
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/590
+- New typedef for switcher type
+  PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/590
 - `Subsystem`: New API to add table and sequence entries

 ## Fixed
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -4,10 +4,10 @@ set(LIB_FSFW_NAME fsfw)
 project(${LIB_FSFW_NAME})

 if(NOT CMAKE_CXX_STANDARD)
-    set(CMAKE_CXX_STANDARD 17)
-    set(CMAKE_CXX_STANDARD_REQUIRED True)
+  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED True)
 elseif(${CMAKE_CXX_STANDARD} LESS 17)
-    message(FATAL_ERROR "Compiling the FSFW requires a minimum of C++17 support")
+  message(FATAL_ERROR "Compiling the FSFW requires a minimum of C++17 support")
 endif()

 set(FSFW_VERSION 4)
@ -18,24 +18,28 @@ set(FSFW_REVISION 0)
 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})

 set(FSFW_ETL_LIB_NAME etl)
-set(FSFW_ETL_LIB_MAJOR_VERSION 20 CACHE STRING
-  "ETL library major version requirement"
-)
-set(FSFW_ETL_LIB_VERSION ${FSFW_ETL_LIB_MAJOR_VERSION}.27.3 CACHE STRING
-  "ETL library exact version requirement"
-)
+set(FSFW_ETL_LIB_MAJOR_VERSION
+    20
+    CACHE STRING "ETL library major version requirement")
+set(FSFW_ETL_LIB_VERSION
+    ${FSFW_ETL_LIB_MAJOR_VERSION}.27.3
+    CACHE STRING "ETL library exact version requirement")
 set(FSFW_ETL_LINK_TARGET etl::etl)

-set(FSFW_CATCH2_LIB_MAJOR_VERSION 3 CACHE STRING
-    "Catch2 library major version requirement"
-)
-set(FSFW_CATCH2_LIB_VERSION v${FSFW_CATCH2_LIB_MAJOR_VERSION}.0.0-preview5 CACHE STRING
-    "Catch2 library exact version requirement"
-)
+set(FSFW_CATCH2_LIB_MAJOR_VERSION
+    3
+    CACHE STRING "Catch2 library major version requirement")
+set(FSFW_CATCH2_LIB_VERSION
+    v${FSFW_CATCH2_LIB_MAJOR_VERSION}.0.0-preview5
+    CACHE STRING "Catch2 library exact version requirement")

-# Keep this off by default for now. See PR: https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/616
-# for information which keeping this on by default is problematic
-option(FSFW_ENABLE_IPO "Enable interprocedural optimization or link-time optimization if available" OFF)
+# Keep this off by default for now. See PR:
+# https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/616 for information which
+# keeping this on by default is problematic
+option(
+  FSFW_ENABLE_IPO
+  "Enable interprocedural optimization or link-time optimization if available"
+  OFF)
 if(FSFW_ENABLE_IPO)
  include(CheckIPOSupported)
  check_ipo_supported(RESULT IPO_SUPPORTED OUTPUT IPO_ERROR)
@ -45,13 +49,13 @@ if(FSFW_ENABLE_IPO)
 endif()

 option(FSFW_GENERATE_SECTIONS
-  "Generate function and data sections. Required to remove unused code" ON
-)
+       "Generate function and data sections. Required to remove unused code" ON)
 if(FSFW_GENERATE_SECTIONS)
  option(FSFW_REMOVE_UNUSED_CODE "Remove unused code" ON)
 endif()

-option(FSFW_BUILD_UNITTESTS "Build unittest binary in addition to static library" OFF)
+option(FSFW_BUILD_UNITTESTS
+       "Build unittest binary in addition to static library" OFF)
 option(FSFW_BUILD_DOCS "Build documentation with Sphinx and Doxygen" OFF)
 if(FSFW_BUILD_UNITTESTS)
  option(FSFW_TESTS_GEN_COV "Generate coverage data for unittests" ON)
@ -75,59 +79,61 @@ option(FSFW_ADD_TMSTORAGE "Compile with tm storage components" OFF)
 # Contrib sources
 option(FSFW_ADD_SGP4_PROPAGATOR "Add SGP4 propagator code" OFF)

-
 set(FSFW_TEST_TGT fsfw-tests)
 set(FSFW_DUMMY_TGT fsfw-dummy)

 add_library(${LIB_FSFW_NAME})

 if(IPO_SUPPORTED AND FSFW_ENABLE_IPO)
-  set_property(TARGET ${LIB_FSFW_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+  set_property(TARGET ${LIB_FSFW_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION
+                                                TRUE)
 endif()

 if(FSFW_BUILD_UNITTESTS)
-    message(STATUS "Building the FSFW unittests in addition to the static library")
-    # Check whether the user has already installed Catch2 first
-    find_package(Catch2 ${FSFW_CATCH2_LIB_MAJOR_VERSION})
-    # Not installed, so use FetchContent to download and provide Catch2
-    if(NOT Catch2_FOUND)
-        message(STATUS "Catch2 installation not found. Downloading Catch2 library with FetchContent")
-        include(FetchContent)
+  message(
+    STATUS "Building the FSFW unittests in addition to the static library")
+  # Check whether the user has already installed Catch2 first
+  find_package(Catch2 ${FSFW_CATCH2_LIB_MAJOR_VERSION})
+  # Not installed, so use FetchContent to download and provide Catch2
+  if(NOT Catch2_FOUND)
+    message(
+      STATUS
+        "Catch2 installation not found. Downloading Catch2 library with FetchContent"
+    )
+    include(FetchContent)

-        FetchContent_Declare(
-            Catch2
-            GIT_REPOSITORY https://github.com/catchorg/Catch2.git
-            GIT_TAG        ${FSFW_CATCH2_LIB_VERSION}
-        )
+    FetchContent_Declare(
+      Catch2
+      GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+      GIT_TAG ${FSFW_CATCH2_LIB_VERSION})

-        list(APPEND FSFW_FETCH_CONTENT_TARGETS Catch2)
-    endif()
+    list(APPEND FSFW_FETCH_CONTENT_TARGETS Catch2)
+  endif()

-    set(FSFW_CONFIG_PATH tests/src/fsfw_tests/unit/testcfg)
-    configure_file(tests/src/fsfw_tests/unit/testcfg/FSFWConfig.h.in FSFWConfig.h)
-    configure_file(tests/src/fsfw_tests/unit/testcfg/TestsConfig.h.in tests/TestsConfig.h)
+  set(FSFW_CONFIG_PATH tests/src/fsfw_tests/unit/testcfg)
+  configure_file(tests/src/fsfw_tests/unit/testcfg/FSFWConfig.h.in FSFWConfig.h)
+  configure_file(tests/src/fsfw_tests/unit/testcfg/TestsConfig.h.in
+                 tests/TestsConfig.h)

-    project(${FSFW_TEST_TGT} CXX C)
-    add_executable(${FSFW_TEST_TGT})
-    if(IPO_SUPPORTED AND FSFW_ENABLE_IPO)
-      set_property(TARGET ${FSFW_TEST_TGT} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
-    endif()
+  project(${FSFW_TEST_TGT} CXX C)
+  add_executable(${FSFW_TEST_TGT})
+  if(IPO_SUPPORTED AND FSFW_ENABLE_IPO)
+    set_property(TARGET ${FSFW_TEST_TGT} PROPERTY INTERPROCEDURAL_OPTIMIZATION
+                                                  TRUE)
+  endif()

-    if(FSFW_TESTS_GEN_COV)
-        message(STATUS "Generating coverage data for the library")
-        message(STATUS "Targets linking against ${LIB_FSFW_NAME} "
-            "will be compiled with coverage data as well"
-        )
-        include(FetchContent)
-        FetchContent_Declare(
-            cmake-modules
-            GIT_REPOSITORY https://github.com/bilke/cmake-modules.git
-        )
-        FetchContent_MakeAvailable(cmake-modules)
-        set(CMAKE_BUILD_TYPE "Debug")
-        list(APPEND CMAKE_MODULE_PATH ${cmake-modules_SOURCE_DIR})
-        include(CodeCoverage)
-    endif()
+  if(FSFW_TESTS_GEN_COV)
+    message(STATUS "Generating coverage data for the library")
+    message(STATUS "Targets linking against ${LIB_FSFW_NAME} "
+                   "will be compiled with coverage data as well")
+    include(FetchContent)
+    FetchContent_Declare(
+      cmake-modules GIT_REPOSITORY https://github.com/bilke/cmake-modules.git)
+    FetchContent_MakeAvailable(cmake-modules)
+    set(CMAKE_BUILD_TYPE "Debug")
+    list(APPEND CMAKE_MODULE_PATH ${cmake-modules_SOURCE_DIR})
+    include(CodeCoverage)
+  endif()
 endif()

 message(STATUS "Finding and/or providing ETL library")
@ -136,34 +142,33 @@ message(STATUS "Finding and/or providing ETL library")
 find_package(${FSFW_ETL_LIB_NAME} ${FSFW_ETL_LIB_MAJOR_VERSION} QUIET)
 # Not installed, so use FetchContent to download and provide etl
 if(NOT ${FSFW_ETL_LIB_NAME}_FOUND)
-    message(STATUS
-        "No ETL installation was found with find_package. Installing and providing "
-        "etl with FindPackage"
-    )
-    include(FetchContent)
+  message(
+    STATUS
+      "No ETL installation was found with find_package. Installing and providing "
+      "etl with FindPackage")
+  include(FetchContent)

-    FetchContent_Declare(
-        ${FSFW_ETL_LIB_NAME}
-        GIT_REPOSITORY https://github.com/ETLCPP/etl
-        GIT_TAG        ${FSFW_ETL_LIB_VERSION}
-    )
+  FetchContent_Declare(
+    ${FSFW_ETL_LIB_NAME}
+    GIT_REPOSITORY https://github.com/ETLCPP/etl
+    GIT_TAG ${FSFW_ETL_LIB_VERSION})

-    list(APPEND FSFW_FETCH_CONTENT_TARGETS ${FSFW_ETL_LIB_NAME})
+  list(APPEND FSFW_FETCH_CONTENT_TARGETS ${FSFW_ETL_LIB_NAME})
 endif()

 # The documentation for FetchContent recommends declaring all the dependencies
 # before making them available. We make all declared dependency available here
 # after their declaration
 if(FSFW_FETCH_CONTENT_TARGETS)
-    FetchContent_MakeAvailable(${FSFW_FETCH_CONTENT_TARGETS})
-    if(TARGET ${FSFW_ETL_LIB_NAME})
-        add_library(${FSFW_ETL_LINK_TARGET} ALIAS ${FSFW_ETL_LIB_NAME})
-    endif()
-    if(TARGET Catch2)
-        # Fixes regression -preview4, to be confirmed in later releases
-        # Related GitHub issue: https://github.com/catchorg/Catch2/issues/2417
-        set_target_properties(Catch2 PROPERTIES DEBUG_POSTFIX "")
-    endif()
+  FetchContent_MakeAvailable(${FSFW_FETCH_CONTENT_TARGETS})
+  if(TARGET ${FSFW_ETL_LIB_NAME})
+    add_library(${FSFW_ETL_LINK_TARGET} ALIAS ${FSFW_ETL_LIB_NAME})
+  endif()
+  if(TARGET Catch2)
+    # Fixes regression -preview4, to be confirmed in later releases Related
+    # GitHub issue: https://github.com/catchorg/Catch2/issues/2417
+    set_target_properties(Catch2 PROPERTIES DEBUG_POSTFIX "")
+  endif()
 endif()

 set(FSFW_CORE_INC_PATH "inc")
@ -171,59 +176,51 @@ set(FSFW_CORE_INC_PATH "inc")
 set_property(CACHE FSFW_OSAL PROPERTY STRINGS host linux rtems freertos)

 # For configure files
-target_include_directories(${LIB_FSFW_NAME} PRIVATE
-    ${CMAKE_CURRENT_BINARY_DIR}
-)
-target_include_directories(${LIB_FSFW_NAME} INTERFACE
-    ${CMAKE_CURRENT_BINARY_DIR}
-)
-
+target_include_directories(${LIB_FSFW_NAME} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+target_include_directories(${LIB_FSFW_NAME}
+                           INTERFACE ${CMAKE_CURRENT_BINARY_DIR})

 # Backwards comptability
 if(OS_FSFW AND NOT FSFW_OSAL)
-    message(WARNING "Please pass the FSFW OSAL as FSFW_OSAL instead of OS_FSFW")
-    set(FSFW_OSAL OS_FSFW)
+  message(WARNING "Please pass the FSFW OSAL as FSFW_OSAL instead of OS_FSFW")
+  set(FSFW_OSAL OS_FSFW)
 endif()

 if(NOT FSFW_OSAL)
-	message(STATUS "No OS for FSFW via FSFW_OSAL set. Assuming host OS")
-	# Assume host OS and autodetermine from OS_FSFW
-	if(UNIX)
-		set(FSFW_OSAL  "linux" 
-			CACHE STRING 
-			"OS abstraction layer used in the FSFW"
-		)
-	elseif(WIN32)
-		set(FSFW_OSAL  "host" 
-			CACHE STRING "OS abstraction layer used in the FSFW"
-		)
-	endif()
+  message(STATUS "No OS for FSFW via FSFW_OSAL set. Assuming host OS")
+  # Assume host OS and autodetermine from OS_FSFW
+  if(UNIX)
+    set(FSFW_OSAL
+        "linux"
+        CACHE STRING "OS abstraction layer used in the FSFW")
+  elseif(WIN32)
+    set(FSFW_OSAL
+        "host"
+        CACHE STRING "OS abstraction layer used in the FSFW")
+  endif()

 endif()

 set(FSFW_OSAL_DEFINITION FSFW_OSAL_HOST)

 if(FSFW_OSAL MATCHES host)
-    set(FSFW_OS_NAME "Host")
-    set(FSFW_OSAL_HOST ON)
+  set(FSFW_OS_NAME "Host")
+  set(FSFW_OSAL_HOST ON)
 elseif(FSFW_OSAL MATCHES linux)
-    set(FSFW_OS_NAME "Linux")
-    set(FSFW_OSAL_LINUX ON)
+  set(FSFW_OS_NAME "Linux")
+  set(FSFW_OSAL_LINUX ON)
 elseif(FSFW_OSAL MATCHES freertos)
-    set(FSFW_OS_NAME "FreeRTOS")
-    set(FSFW_OSAL_FREERTOS ON)
-    target_link_libraries(${LIB_FSFW_NAME} PRIVATE
-        ${LIB_OS_NAME}
-    )
+  set(FSFW_OS_NAME "FreeRTOS")
+  set(FSFW_OSAL_FREERTOS ON)
+  target_link_libraries(${LIB_FSFW_NAME} PRIVATE ${LIB_OS_NAME})
 elseif(FSFW_OSAL STREQUAL rtems)
-    set(FSFW_OS_NAME "RTEMS")
-    set(FSFW_OSAL_RTEMS ON)
+  set(FSFW_OS_NAME "RTEMS")
+  set(FSFW_OSAL_RTEMS ON)
 else()
-    message(WARNING
-        "Invalid operating system for FSFW specified! Setting to host.."
-    )
-    set(FSFW_OS_NAME "Host")
-    set(OS_FSFW "host")
+  message(
+    WARNING "Invalid operating system for FSFW specified! Setting to host..")
+  set(FSFW_OS_NAME "Host")
+  set(OS_FSFW "host")
 endif()

 configure_file(src/fsfw/FSFW.h.in fsfw/FSFW.h)
@ -234,206 +231,178 @@ message(STATUS "Compiling FSFW for the ${FSFW_OS_NAME} operating system.")
 add_subdirectory(src)
 add_subdirectory(tests)
 if(FSFW_ADD_HAL)
-    add_subdirectory(hal)
+  add_subdirectory(hal)
 endif()
 add_subdirectory(contrib)
 if(FSFW_BUILD_DOCS)
-    add_subdirectory(docs)
+  add_subdirectory(docs)
 endif()

 if(FSFW_BUILD_UNITTESTS)
-    if(FSFW_TESTS_GEN_COV)
-        if(CMAKE_COMPILER_IS_GNUCXX)
-            include(CodeCoverage)
+  if(FSFW_TESTS_GEN_COV)
+    if(CMAKE_COMPILER_IS_GNUCXX)
+      include(CodeCoverage)

-            # Remove quotes.
-            separate_arguments(COVERAGE_COMPILER_FLAGS
-                NATIVE_COMMAND "${COVERAGE_COMPILER_FLAGS}"
-            )
+      # Remove quotes.
+      separate_arguments(COVERAGE_COMPILER_FLAGS NATIVE_COMMAND
+                         "${COVERAGE_COMPILER_FLAGS}")

-            # Add compile options manually, we don't want coverage for Catch2
-            target_compile_options(${FSFW_TEST_TGT} PRIVATE
-                "${COVERAGE_COMPILER_FLAGS}"
-            )
-            target_compile_options(${LIB_FSFW_NAME} PRIVATE
-                "${COVERAGE_COMPILER_FLAGS}"
-            )
+      # Add compile options manually, we don't want coverage for Catch2
+      target_compile_options(${FSFW_TEST_TGT}
+                             PRIVATE "${COVERAGE_COMPILER_FLAGS}")
+      target_compile_options(${LIB_FSFW_NAME}
+                             PRIVATE "${COVERAGE_COMPILER_FLAGS}")

-            # Exclude directories here
-            if(WIN32)
-                set(GCOVR_ADDITIONAL_ARGS
-                    "--exclude-throw-branches"
-                    "--exclude-unreachable-branches"
-                )
-                set(COVERAGE_EXCLUDES
-                    "/c/msys64/mingw64/*" "*/fsfw_hal/*"
-                )
-            elseif(UNIX)
-                set(COVERAGE_EXCLUDES
-                    "/usr/include/*" "/usr/bin/*" "Catch2/*"
-                    "/usr/local/include/*" "*/fsfw_tests/*"
-                    "*/catch2-src/*" "*/fsfw_hal/*"
-                )
-            endif()
+      # Exclude directories here
+      if(WIN32)
+        set(GCOVR_ADDITIONAL_ARGS "--exclude-throw-branches"
+                                  "--exclude-unreachable-branches")
+        set(COVERAGE_EXCLUDES "/c/msys64/mingw64/*" "*/fsfw_hal/*")
+      elseif(UNIX)
+        set(COVERAGE_EXCLUDES
+            "/usr/include/*"
+            "/usr/bin/*"
+            "Catch2/*"
+            "/usr/local/include/*"
+            "*/fsfw_tests/*"
+            "*/catch2-src/*"
+            "*/fsfw_hal/*")
+      endif()

-            target_link_options(${FSFW_TEST_TGT} PRIVATE
-                -fprofile-arcs
-                -ftest-coverage
-            )
-            target_link_options(${LIB_FSFW_NAME} PRIVATE
-                -fprofile-arcs
-                -ftest-coverage
-            )
-            # Need to specify this as an interface, otherwise there will the compile issues
-            target_link_options(${LIB_FSFW_NAME} INTERFACE
-                -fprofile-arcs
-                -ftest-coverage
-            )
+      target_link_options(${FSFW_TEST_TGT} PRIVATE -fprofile-arcs
+                          -ftest-coverage)
+      target_link_options(${LIB_FSFW_NAME} PRIVATE -fprofile-arcs
+                          -ftest-coverage)
+      # Need to specify this as an interface, otherwise there will the compile
+      # issues
+      target_link_options(${LIB_FSFW_NAME} INTERFACE -fprofile-arcs
+                          -ftest-coverage)

-            if(WIN32)
-                setup_target_for_coverage_gcovr_html(
-                    NAME ${FSFW_TEST_TGT}_coverage
-                    EXECUTABLE ${FSFW_TEST_TGT}
-                    DEPENDENCIES ${FSFW_TEST_TGT}
-                )
-            else()
-                setup_target_for_coverage_lcov(
-                    NAME ${FSFW_TEST_TGT}_coverage
-                    EXECUTABLE ${FSFW_TEST_TGT}
-                    DEPENDENCIES ${FSFW_TEST_TGT}
-                )
-            endif()
-        endif()
+      if(WIN32)
+        setup_target_for_coverage_gcovr_html(
+          NAME ${FSFW_TEST_TGT}_coverage EXECUTABLE ${FSFW_TEST_TGT}
+          DEPENDENCIES ${FSFW_TEST_TGT})
+      else()
+        setup_target_for_coverage_lcov(
+          NAME ${FSFW_TEST_TGT}_coverage EXECUTABLE ${FSFW_TEST_TGT}
+          DEPENDENCIES ${FSFW_TEST_TGT})
+      endif()
    endif()
-    target_link_libraries(${FSFW_TEST_TGT} PRIVATE Catch2::Catch2 ${LIB_FSFW_NAME})
+  endif()
+  target_link_libraries(${FSFW_TEST_TGT} PRIVATE Catch2::Catch2
+                                                 ${LIB_FSFW_NAME})
 endif()

-# The project CMakeLists file has to set the FSFW_CONFIG_PATH and add it.
-# If this is not given, we include the default configuration and emit a warning.
+# The project CMakeLists file has to set the FSFW_CONFIG_PATH and add it. If
+# this is not given, we include the default configuration and emit a warning.
 if(NOT FSFW_CONFIG_PATH)
-    set(DEF_CONF_PATH misc/defaultcfg/fsfwconfig)
-    if(NOT FSFW_BUILD_DOCS)
-        message(WARNING "Flight Software Framework configuration path not set!")
-        message(WARNING "Setting default configuration from ${DEF_CONF_PATH} ..")
-    endif()
-    add_subdirectory(${DEF_CONF_PATH})
-    set(FSFW_CONFIG_PATH ${DEF_CONF_PATH})
+  set(DEF_CONF_PATH misc/defaultcfg/fsfwconfig)
+  if(NOT FSFW_BUILD_DOCS)
+    message(WARNING "Flight Software Framework configuration path not set!")
+    message(WARNING "Setting default configuration from ${DEF_CONF_PATH} ..")
+  endif()
+  add_subdirectory(${DEF_CONF_PATH})
+  set(FSFW_CONFIG_PATH ${DEF_CONF_PATH})
 endif()

-# FSFW might be part of a possibly complicated folder structure, so we 
-# extract the absolute path of the fsfwconfig folder.
+# FSFW might be part of a possibly complicated folder structure, so we extract
+# the absolute path of the fsfwconfig folder.
 if(IS_ABSOLUTE ${FSFW_CONFIG_PATH})
-	set(FSFW_CONFIG_PATH_ABSOLUTE ${FSFW_CONFIG_PATH})
+  set(FSFW_CONFIG_PATH_ABSOLUTE ${FSFW_CONFIG_PATH})
 else()
-	get_filename_component(FSFW_CONFIG_PATH_ABSOLUTE
-		${FSFW_CONFIG_PATH} REALPATH BASE_DIR ${CMAKE_SOURCE_DIR}
-	)
+  get_filename_component(FSFW_CONFIG_PATH_ABSOLUTE ${FSFW_CONFIG_PATH} REALPATH
+                         BASE_DIR ${CMAKE_SOURCE_DIR})
 endif()

 foreach(INCLUDE_PATH ${FSFW_ADDITIONAL_INC_PATHS})
-    if(IS_ABSOLUTE ${INCLUDE_PATH})
-        set(CURR_ABS_INC_PATH "${INCLUDE_PATH}")
-    else()
-        get_filename_component(CURR_ABS_INC_PATH
-            ${INCLUDE_PATH} REALPATH BASE_DIR ${CMAKE_SOURCE_DIR})
-    endif()
+  if(IS_ABSOLUTE ${INCLUDE_PATH})
+    set(CURR_ABS_INC_PATH "${INCLUDE_PATH}")
+  else()
+    get_filename_component(CURR_ABS_INC_PATH ${INCLUDE_PATH} REALPATH BASE_DIR
+                           ${CMAKE_SOURCE_DIR})
+  endif()

-    if(CMAKE_VERBOSE)
-        message(STATUS "FSFW include path: ${CURR_ABS_INC_PATH}")
-    endif()
+  if(CMAKE_VERBOSE)
+    message(STATUS "FSFW include path: ${CURR_ABS_INC_PATH}")
+  endif()

-    list(APPEND FSFW_ADD_INC_PATHS_ABS ${CURR_ABS_INC_PATH})
+  list(APPEND FSFW_ADD_INC_PATHS_ABS ${CURR_ABS_INC_PATH})
 endforeach()

 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    if(NOT DEFINED FSFW_WARNING_FLAGS)
-	   set(FSFW_WARNING_FLAGS
-		  -Wall
-		  -Wextra
-		  -Wimplicit-fallthrough=1
-		  -Wno-unused-parameter
-		  -Wno-psabi
-          -Wduplicated-cond # check for duplicate conditions
-          -Wduplicated-branches # check for duplicate branches
-          -Wlogical-op # Search for bitwise operations instead of logical 
-          -Wnull-dereference # Search for NULL dereference
-          -Wundef # Warn if undefind marcos are used
-          -Wformat=2 # Format string problem detection
-          -Wformat-overflow=2 # Formatting issues in printf
-          -Wformat-truncation=2 # Formatting issues in printf
-          -Wformat-security # Search for dangerous printf operations
-          -Wstrict-overflow=3 # Warn if integer overflows might happen
-          -Warray-bounds=2 # Some array bounds violations will be found
-          -Wshift-overflow=2 # Search for bit left shift overflows (<c++14)
-          -Wcast-qual # Warn if the constness is cast away
-          -Wstringop-overflow=4
-          # -Wstack-protector # Emits a few false positives for low level access
-          # -Wconversion # Creates many false positives
-          # -Warith-conversion # Use with Wconversion to find more implicit conversions
-          # -fanalyzer # Should be used to look through problems
-        )
-    endif()
+  if(NOT DEFINED FSFW_WARNING_FLAGS)
+    set(FSFW_WARNING_FLAGS
+        -Wall
+        -Wextra
+        -Wimplicit-fallthrough=1
+        -Wno-unused-parameter
+        -Wno-psabi
+        -Wduplicated-cond # check for duplicate conditions
+        -Wduplicated-branches # check for duplicate branches
+        -Wlogical-op # Search for bitwise operations instead of logical
+        -Wnull-dereference # Search for NULL dereference
+        -Wundef # Warn if undefind marcos are used
+        -Wformat=2 # Format string problem detection
+        -Wformat-overflow=2 # Formatting issues in printf
+        -Wformat-truncation=2 # Formatting issues in printf
+        -Wformat-security # Search for dangerous printf operations
+        -Wstrict-overflow=3 # Warn if integer overflows might happen
+        -Warray-bounds=2 # Some array bounds violations will be found
+        -Wshift-overflow=2 # Search for bit left shift overflows (<c++14)
+        -Wcast-qual # Warn if the constness is cast away
+        -Wstringop-overflow=4
+        # -Wstack-protector # Emits a few false positives for low level access
+        # -Wconversion # Creates many false positives -Warith-conversion # Use
+        # with Wconversion to find more implicit conversions -fanalyzer # Should
+        # be used to look through problems
+    )
+  endif()

-    if(FSFW_GENERATE_SECTIONS)
-        target_compile_options(${LIB_FSFW_NAME} PRIVATE
-            "-ffunction-sections"
-            "-fdata-sections"
-        )
-    endif()
+  if(FSFW_GENERATE_SECTIONS)
+    target_compile_options(${LIB_FSFW_NAME} PRIVATE "-ffunction-sections"
+                                                    "-fdata-sections")
+  endif()
+
+  if(FSFW_REMOVE_UNUSED_CODE)
+    target_link_options(${LIB_FSFW_NAME} PRIVATE "Wl,--gc-sections")
+  endif()
+
+  if(FSFW_WARNING_SHADOW_LOCAL_GCC)
+    list(APPEND WARNING_FLAGS "-Wshadow=local")
+  endif()

-    if(FSFW_REMOVE_UNUSED_CODE)
-        target_link_options(${LIB_FSFW_NAME} PRIVATE
-            "Wl,--gc-sections"
-        )
-    endif()
-  
-    if(FSFW_WARNING_SHADOW_LOCAL_GCC)
-        list(APPEND WARNING_FLAGS "-Wshadow=local")
-    endif()
-	
 endif()

 if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-	set(COMPILER_FLAGS "/permissive-")
+  set(COMPILER_FLAGS "/permissive-")
 endif()

 # Required include paths to compile the FSFW
-target_include_directories(${LIB_FSFW_NAME} INTERFACE 
-	${CMAKE_SOURCE_DIR}
-	${FSFW_CONFIG_PATH_ABSOLUTE}
-	${FSFW_CORE_INC_PATH}
-	${FSFW_ADD_INC_PATHS_ABS}
-)
+target_include_directories(
+  ${LIB_FSFW_NAME} INTERFACE ${CMAKE_SOURCE_DIR} ${FSFW_CONFIG_PATH_ABSOLUTE}
+                             ${FSFW_CORE_INC_PATH} ${FSFW_ADD_INC_PATHS_ABS})

-# Includes path required to compile FSFW itself as well
-# We assume that the fsfwconfig folder uses include relative to the project
-# root here!
-target_include_directories(${LIB_FSFW_NAME} PRIVATE 
-	${CMAKE_SOURCE_DIR}
-	${FSFW_CONFIG_PATH_ABSOLUTE}
-	${FSFW_CORE_INC_PATH}
-	${FSFW_ADD_INC_PATHS_ABS}
-)
+# Includes path required to compile FSFW itself as well We assume that the
+# fsfwconfig folder uses include relative to the project root here!
+target_include_directories(
+  ${LIB_FSFW_NAME} PRIVATE ${CMAKE_SOURCE_DIR} ${FSFW_CONFIG_PATH_ABSOLUTE}
+                           ${FSFW_CORE_INC_PATH} ${FSFW_ADD_INC_PATHS_ABS})

-target_compile_options(${LIB_FSFW_NAME} PRIVATE 
-	${FSFW_WARNING_FLAGS}
-	${COMPILER_FLAGS}
-)
+target_compile_options(${LIB_FSFW_NAME} PRIVATE ${FSFW_WARNING_FLAGS}
+                                                ${COMPILER_FLAGS})

-target_link_libraries(${LIB_FSFW_NAME} PRIVATE
-    ${FSFW_ETL_LINK_TARGET}
-    ${FSFW_ADDITIONAL_LINK_LIBS}
-)
+target_link_libraries(${LIB_FSFW_NAME} PRIVATE ${FSFW_ETL_LINK_TARGET}
+                                               ${FSFW_ADDITIONAL_LINK_LIBS})

-string(CONCAT POST_BUILD_COMMENT
+string(
+  CONCAT
+    POST_BUILD_COMMENT
    "######################################################################\n"
    "Built FSFW v${FSFW_VERSION}.${FSFW_SUBVERSION}.${FSFW_REVISION}, "
    "Target OSAL: ${FSFW_OS_NAME}\n"
-    "######################################################################\n"
-)
+    "######################################################################\n")

 add_custom_command(
-   TARGET ${LIB_FSFW_NAME}
-   POST_BUILD
-   COMMENT ${POST_BUILD_COMMENT}
-)
+  TARGET ${LIB_FSFW_NAME}
+  POST_BUILD
+  COMMENT ${POST_BUILD_COMMENT})
--- a/scripts/apply-clang-format.sh
+++ b/scripts/apply-clang-format.sh
@ -3,6 +3,13 @@ if [[ ! -f README.md ]]; then
 	cd ..
 fi

-find ./src -iname *.h -o -iname *.cpp -o -iname *.c -o -iname *.tpp | xargs clang-format --style=file -i
-find ./hal -iname *.h -o -iname *.cpp -o -iname *.c -o -iname *.tpp | xargs clang-format --style=file -i
-find ./tests -iname *.h -o -iname *.cpp -o -iname *.c -o -iname *.tpp | xargs clang-format --style=file -i
+cmake_fmt="cmake-format"
+if command -v ${cmake_fmt} &> /dev/null; then
+	cmake_fmt_cmd="${cmake_fmt} -i CMakeLists.txt"
+	eval ${cmake_fmt_cmd}
+fi
+
+file_selectors="-iname *.h -o -iname *.cpp -o -iname *.c -o -iname *.tpp"
+find ./src ${file_selectors} | xargs clang-format --style=file -i
+find ./hal ${file_selectors} | xargs clang-format --style=file -i
+find ./tests ${file_selectors} | xargs clang-format --style=file -i
--- a/src/fsfw/power/CMakeLists.txt
+++ b/src/fsfw/power/CMakeLists.txt
@ -1,7 +1,7 @@
-target_sources(${LIB_FSFW_NAME} 
-	PRIVATE 
-		Fuse.cpp
-		PowerComponent.cpp
-		PowerSensor.cpp
-		PowerSwitcher.cpp
+target_sources(${LIB_FSFW_NAME} PRIVATE
+    Fuse.cpp
+    PowerComponent.cpp
+    PowerSensor.cpp
+    PowerSwitcher.cpp
+    DummyPowerSwitcher.cpp
 )
--- a/src/fsfw/power/DummyPowerSwitcher.cpp
+++ b/src/fsfw/power/DummyPowerSwitcher.cpp
@ -0,0 +1,47 @@
+#include "DummyPowerSwitcher.h"
+
+DummyPowerSwitcher::DummyPowerSwitcher(object_id_t objectId, size_t numberOfSwitches,
+                                       size_t numberOfFuses, bool registerGlobally,
+                                       uint32_t switchDelayMs)
+    : SystemObject(objectId, registerGlobally),
+      switcherList(numberOfSwitches),
+      fuseList(numberOfFuses),
+      switchDelayMs(switchDelayMs) {}
+
+void DummyPowerSwitcher::setInitialSwitcherList(std::vector<ReturnValue_t> switcherList) {
+  this->switcherList = switcherList;
+}
+
+void DummyPowerSwitcher::setInitialFusesList(std::vector<ReturnValue_t> fuseList) {
+  this->fuseList = fuseList;
+}
+
+ReturnValue_t DummyPowerSwitcher::sendSwitchCommand(power::Switch_t switchNr, ReturnValue_t onOff) {
+  if (switchNr < switcherList.capacity()) {
+    switcherList[switchNr] = onOff;
+  }
+  return RETURN_FAILED;
+}
+
+ReturnValue_t DummyPowerSwitcher::sendFuseOnCommand(uint8_t fuseNr) {
+  if (fuseNr < fuseList.capacity()) {
+    fuseList[fuseNr] = FUSE_ON;
+  }
+  return RETURN_FAILED;
+}
+
+ReturnValue_t DummyPowerSwitcher::getSwitchState(power::Switch_t switchNr) const {
+  if (switchNr < switcherList.capacity()) {
+    return switcherList[switchNr];
+  }
+  return HasReturnvaluesIF::RETURN_FAILED;
+}
+
+ReturnValue_t DummyPowerSwitcher::getFuseState(uint8_t fuseNr) const {
+  if (fuseNr < fuseList.capacity()) {
+    return fuseList[fuseNr];
+  }
+  return HasReturnvaluesIF::RETURN_FAILED;
+}
+
+uint32_t DummyPowerSwitcher::getSwitchDelayMs(void) const { return switchDelayMs; }
--- a/src/fsfw/power/DummyPowerSwitcher.h
+++ b/src/fsfw/power/DummyPowerSwitcher.h
@ -0,0 +1,38 @@
+#ifndef FSFW_SRC_FSFW_POWER_DUMMYPOWERSWITCHER_H_
+#define FSFW_SRC_FSFW_POWER_DUMMYPOWERSWITCHER_H_
+
+#include <cstddef>
+#include <vector>
+
+#include "PowerSwitchIF.h"
+#include "definitions.h"
+#include "fsfw/objectmanager/SystemObject.h"
+
+/**
+ * @brief   This component can be used to simulate a power switcher like a
+ *          Power Control Distribution Unit (PCDU)
+ * @details
+ * The dummy switcher will simply cache the commanded fuse and switch states and return them
+ * in the according switch getter functions. In that sense, it simulates an ideal PCDU.
+ */
+class DummyPowerSwitcher : public SystemObject, public PowerSwitchIF {
+ public:
+  DummyPowerSwitcher(object_id_t objectId, size_t numberOfSwitches, size_t numberOfFuses,
+                     bool registerGlobally = true, uint32_t switchDelayMs = 5000);
+
+  void setInitialSwitcherList(std::vector<ReturnValue_t> switcherList);
+  void setInitialFusesList(std::vector<ReturnValue_t> switcherList);
+
+  virtual ReturnValue_t sendSwitchCommand(power::Switch_t switchNr, ReturnValue_t onOff) override;
+  virtual ReturnValue_t sendFuseOnCommand(uint8_t fuseNr) override;
+  virtual ReturnValue_t getSwitchState(power::Switch_t switchNr) const override;
+  virtual ReturnValue_t getFuseState(uint8_t fuseNr) const override;
+  virtual uint32_t getSwitchDelayMs(void) const override;
+
+ private:
+  std::vector<ReturnValue_t> switcherList;
+  std::vector<ReturnValue_t> fuseList;
+  uint32_t switchDelayMs = 5000;
+};
+
+#endif /* FSFW_SRC_FSFW_POWER_DUMMYPOWERSWITCHER_H_ */
--- a/src/fsfw/power/Fuse.h
+++ b/src/fsfw/power/Fuse.h
@ -34,14 +34,14 @@ class Fuse : public SystemObject,
  };

  static const uint8_t SUBSYSTEM_ID = SUBSYSTEM_ID::PCDU_1;
-  static const Event FUSE_CURRENT_HIGH = MAKE_EVENT(
-      1, severity::LOW);  //!< PSS detected that current on a fuse is totally out of bounds.
-  static const Event FUSE_WENT_OFF =
-      MAKE_EVENT(2, severity::LOW);  //!< PSS detected a fuse that went off.
-  static const Event POWER_ABOVE_HIGH_LIMIT =
-      MAKE_EVENT(4, severity::LOW);  //!< PSS detected a fuse that violates its limits.
-  static const Event POWER_BELOW_LOW_LIMIT =
-      MAKE_EVENT(5, severity::LOW);  //!< PSS detected a fuse that violates its limits.
+  //! PSS detected that current on a fuse is totally out of bounds.
+  static const Event FUSE_CURRENT_HIGH = MAKE_EVENT(1, severity::LOW);
+  //! PSS detected a fuse that went off.
+  static const Event FUSE_WENT_OFF = MAKE_EVENT(2, severity::LOW);
+  //! PSS detected a fuse that violates its limits.
+  static const Event POWER_ABOVE_HIGH_LIMIT = MAKE_EVENT(4, severity::LOW);
+  //! PSS detected a fuse that violates its limits.
+  static const Event POWER_BELOW_LOW_LIMIT = MAKE_EVENT(5, severity::LOW);

  typedef std::list<PowerComponentIF *> DeviceList;
  Fuse(object_id_t fuseObjectId, uint8_t fuseId, sid_t variableSet, VariableIds ids,
--- a/src/fsfw/power/PowerSensor.cpp
+++ b/src/fsfw/power/PowerSensor.cpp
@ -15,7 +15,8 @@ PowerSensor::PowerSensor(object_id_t objectId, sid_t setId, VariableIds ids, Def
                   limits.currentMin, limits.currentMax, events.currentLow, events.currentHigh),
      voltageLimit(objectId, MODULE_ID_VOLTAGE, ids.pidVoltage, confirmationCount,
                   limits.voltageMin, limits.voltageMax, events.voltageLow, events.voltageHigh) {
-  commandQueue = QueueFactory::instance()->createMessageQueue();
+  commandQueue =
+      QueueFactory::instance()->createMessageQueue(3, MessageQueueMessage::MAX_MESSAGE_SIZE);
 }

 PowerSensor::~PowerSensor() { QueueFactory::instance()->deleteMessageQueue(commandQueue); }
--- a/src/fsfw/power/PowerSwitchIF.h
+++ b/src/fsfw/power/PowerSwitchIF.h
@ -3,6 +3,7 @@

 #include "../events/Event.h"
 #include "../returnvalues/HasReturnvaluesIF.h"
+#include "definitions.h"
 /**
 *
 * @brief   This interface defines a connection to a device that is capable of
@ -37,11 +38,11 @@ class PowerSwitchIF : public HasReturnvaluesIF {
   * @param switchNr
   * @param onOff on == @c SWITCH_ON; off != @c SWITCH_ON
   */
-  virtual void sendSwitchCommand(uint8_t switchNr, ReturnValue_t onOff) const = 0;
+  virtual ReturnValue_t sendSwitchCommand(power::Switch_t switchNr, ReturnValue_t onOff) = 0;
  /**
   * Sends a command to the Power Unit to enable a certain fuse.
   */
-  virtual void sendFuseOnCommand(uint8_t fuseNr) const = 0;
+  virtual ReturnValue_t sendFuseOnCommand(uint8_t fuseNr) = 0;

  /**
   * get the state of the Switches.
@ -51,7 +52,7 @@ class PowerSwitchIF : public HasReturnvaluesIF {
   *     - @c SWITCH_OFF if the specified switch is off.
   *     - @c RETURN_FAILED if an error occured
   */
-  virtual ReturnValue_t getSwitchState(uint8_t switchNr) const = 0;
+  virtual ReturnValue_t getSwitchState(power::Switch_t switchNr) const = 0;
  /**
   * get state of a fuse.
   * @param fuseNr
--- a/src/fsfw/power/PowerSwitcher.cpp
+++ b/src/fsfw/power/PowerSwitcher.cpp
@ -1,19 +1,12 @@
 #include "fsfw/power/PowerSwitcher.h"

+#include "definitions.h"
 #include "fsfw/objectmanager/ObjectManager.h"
 #include "fsfw/serviceinterface/ServiceInterface.h"

-PowerSwitcher::PowerSwitcher(uint8_t setSwitch1, uint8_t setSwitch2,
-                             PowerSwitcher::State_t setStartState)
-    : state(setStartState), firstSwitch(setSwitch1), secondSwitch(setSwitch2) {}
-
-ReturnValue_t PowerSwitcher::initialize(object_id_t powerSwitchId) {
-  power = ObjectManager::instance()->get<PowerSwitchIF>(powerSwitchId);
-  if (power == nullptr) {
-    return HasReturnvaluesIF::RETURN_FAILED;
-  }
-  return HasReturnvaluesIF::RETURN_OK;
-}
+PowerSwitcher::PowerSwitcher(PowerSwitchIF* switcher, power::Switch_t setSwitch1,
+                             power::Switch_t setSwitch2, PowerSwitcher::State_t setStartState)
+    : power(switcher), state(setStartState), firstSwitch(setSwitch1), secondSwitch(setSwitch2) {}

 ReturnValue_t PowerSwitcher::getStateOfSwitches() {
  SwitchReturn_t result = howManySwitches();
@ -52,18 +45,37 @@ void PowerSwitcher::commandSwitches(ReturnValue_t onOff) {
  return;
 }

-void PowerSwitcher::turnOn() {
+void PowerSwitcher::turnOn(bool checkCurrentState) {
+  if (checkCurrentState) {
+    if (getStateOfSwitches() == PowerSwitchIF::SWITCH_ON) {
+      state = SWITCH_IS_ON;
+      return;
+    }
+  }
  commandSwitches(PowerSwitchIF::SWITCH_ON);
  state = WAIT_ON;
 }

-void PowerSwitcher::turnOff() {
+void PowerSwitcher::turnOff(bool checkCurrentState) {
+  if (checkCurrentState) {
+    if (getStateOfSwitches() == PowerSwitchIF::SWITCH_OFF) {
+      state = SWITCH_IS_OFF;
+      return;
+    }
+  }
  commandSwitches(PowerSwitchIF::SWITCH_OFF);
  state = WAIT_OFF;
 }

+bool PowerSwitcher::active() {
+  if (state == WAIT_OFF or state == WAIT_ON) {
+    return true;
+  }
+  return false;
+}
+
 PowerSwitcher::SwitchReturn_t PowerSwitcher::howManySwitches() {
-  if (secondSwitch == NO_SWITCH) {
+  if (secondSwitch == power::NO_SWITCH) {
    return ONE_SWITCH;
  } else {
    return TWO_SWITCHES;
--- a/src/fsfw/power/PowerSwitcher.h
+++ b/src/fsfw/power/PowerSwitcher.h
@ -14,28 +14,29 @@ class PowerSwitcher : public HasReturnvaluesIF {
    SWITCH_IS_OFF,
    SWITCH_IS_ON,
  };
-  State_t state;
+
  static const uint8_t INTERFACE_ID = CLASS_ID::POWER_SWITCHER;
  static const ReturnValue_t IN_POWER_TRANSITION = MAKE_RETURN_CODE(1);
  static const ReturnValue_t SWITCH_STATE_MISMATCH = MAKE_RETURN_CODE(2);
-  PowerSwitcher(uint8_t setSwitch1, uint8_t setSwitch2 = NO_SWITCH,
+  PowerSwitcher(PowerSwitchIF* switcher, power::Switch_t setSwitch1,
+                power::Switch_t setSwitch2 = power::NO_SWITCH,
                State_t setStartState = SWITCH_IS_OFF);
-  ReturnValue_t initialize(object_id_t powerSwitchId);
-  void turnOn();
-  void turnOff();
+  void turnOn(bool checkCurrentState = true);
+  void turnOff(bool checkCurrentState = true);
+  bool active();
  void doStateMachine();
  State_t getState();
  ReturnValue_t checkSwitchState();
  uint32_t getSwitchDelay();
-  uint8_t getFirstSwitch() const;
-  uint8_t getSecondSwitch() const;
+  power::Switch_t getFirstSwitch() const;
+  power::Switch_t getSecondSwitch() const;

 private:
-  uint8_t firstSwitch;
-  uint8_t secondSwitch;
  PowerSwitchIF* power = nullptr;
+  State_t state;
+  power::Switch_t firstSwitch = power::NO_SWITCH;
+  power::Switch_t secondSwitch = power::NO_SWITCH;

-  static const uint8_t NO_SWITCH = 0xFF;
  enum SwitchReturn_t { ONE_SWITCH = 1, TWO_SWITCHES = 2 };
  ReturnValue_t getStateOfSwitches();
  void commandSwitches(ReturnValue_t onOff);
--- a/src/fsfw/power/definitions.h
+++ b/src/fsfw/power/definitions.h
@ -0,0 +1,13 @@
+#ifndef FSFW_SRC_FSFW_POWER_DEFINITIONS_H_
+#define FSFW_SRC_FSFW_POWER_DEFINITIONS_H_
+
+#include <cstdint>
+
+namespace power {
+
+using Switch_t = uint8_t;
+static constexpr Switch_t NO_SWITCH = 0xFF;
+
+}  // namespace power
+
+#endif /* FSFW_SRC_FSFW_POWER_DEFINITIONS_H_ */
--- a/tests/src/fsfw_tests/unit/CMakeLists.txt
+++ b/tests/src/fsfw_tests/unit/CMakeLists.txt
@ -11,7 +11,10 @@ target_sources(${FSFW_TEST_TGT} PRIVATE
 )

 add_subdirectory(testcfg)
+add_subdirectory(mocks)
+
 add_subdirectory(action)
+add_subdirectory(power)
 add_subdirectory(container)
 add_subdirectory(osal)
 add_subdirectory(serialize)
--- a/tests/src/fsfw_tests/unit/mocks/CMakeLists.txt
+++ b/tests/src/fsfw_tests/unit/mocks/CMakeLists.txt
@ -0,0 +1,3 @@
+target_sources(${FSFW_TEST_TGT} PRIVATE
+	PowerSwitcherMock.cpp
+)
--- a/tests/src/fsfw_tests/unit/mocks/PowerSwitcherMock.cpp
+++ b/tests/src/fsfw_tests/unit/mocks/PowerSwitcherMock.cpp
@ -0,0 +1,77 @@
+#include "PowerSwitcherMock.h"
+
+static uint32_t SWITCH_REQUEST_UPDATE_VALUE = 0;
+
+PowerSwitcherMock::PowerSwitcherMock() {}
+
+ReturnValue_t PowerSwitcherMock::sendSwitchCommand(power::Switch_t switchNr, ReturnValue_t onOff) {
+  if (switchMap.count(switchNr) == 0) {
+    switchMap.emplace(switchNr, SwitchInfo(switchNr, onOff));
+  } else {
+    SwitchInfo& info = switchMap.at(switchNr);
+    info.currentState = onOff;
+    if (onOff == PowerSwitchIF::SWITCH_ON) {
+      info.timesCalledOn++;
+    } else {
+      info.timesCalledOff++;
+    }
+  }
+  return RETURN_OK;
+}
+
+ReturnValue_t PowerSwitcherMock::sendFuseOnCommand(uint8_t fuseNr) {
+  if (fuseMap.count(fuseNr) == 0) {
+    fuseMap.emplace(fuseNr, FuseInfo(fuseNr));
+  } else {
+    FuseInfo& info = fuseMap.at(fuseNr);
+    info.timesCalled++;
+  }
+  return RETURN_OK;
+}
+
+ReturnValue_t PowerSwitcherMock::getSwitchState(power::Switch_t switchNr) const {
+  if (switchMap.count(switchNr) == 1) {
+    auto& info = switchMap.at(switchNr);
+    SWITCH_REQUEST_UPDATE_VALUE++;
+    return info.currentState;
+  }
+  return RETURN_FAILED;
+}
+
+ReturnValue_t PowerSwitcherMock::getFuseState(uint8_t fuseNr) const {
+  if (fuseMap.count(fuseNr) == 1) {
+    return FUSE_ON;
+  } else {
+    return FUSE_OFF;
+  }
+  return RETURN_FAILED;
+}
+
+uint32_t PowerSwitcherMock::getSwitchDelayMs(void) const { return 5000; }
+
+SwitchInfo::SwitchInfo() : switcher(0) {}
+
+SwitchInfo::SwitchInfo(power::Switch_t switcher, ReturnValue_t initState)
+    : switcher(switcher), currentState(initState) {}
+
+FuseInfo::FuseInfo(uint8_t fuse) : fuse(fuse) {}
+
+void PowerSwitcherMock::getSwitchInfo(power::Switch_t switcher, SwitchInfo& info) {
+  if (switchMap.count(switcher) == 1) {
+    info = switchMap.at(switcher);
+  }
+}
+
+void PowerSwitcherMock::getFuseInfo(uint8_t fuse, FuseInfo& info) {
+  if (fuseMap.count(fuse) == 1) {
+    info = fuseMap.at(fuse);
+  }
+}
+
+uint32_t PowerSwitcherMock::getAmountSwitchStatWasRequested() {
+  return SWITCH_REQUEST_UPDATE_VALUE;
+}
+
+void PowerSwitcherMock::initSwitch(power::Switch_t switchNr) {
+  switchMap.emplace(switchNr, SwitchInfo(switchNr, PowerSwitchIF::SWITCH_OFF));
+}
--- a/tests/src/fsfw_tests/unit/mocks/PowerSwitcherMock.h
+++ b/tests/src/fsfw_tests/unit/mocks/PowerSwitcherMock.h
@ -0,0 +1,52 @@
+#ifndef FSFW_TESTS_SRC_FSFW_TESTS_UNIT_MOCKS_POWERSWITCHERMOCK_H_
+#define FSFW_TESTS_SRC_FSFW_TESTS_UNIT_MOCKS_POWERSWITCHERMOCK_H_
+
+#include <fsfw/power/PowerSwitchIF.h>
+
+#include <map>
+#include <utility>
+
+struct SwitchInfo {
+ public:
+  SwitchInfo();
+  SwitchInfo(power::Switch_t switcher, ReturnValue_t initState);
+
+  power::Switch_t switcher;
+  ReturnValue_t currentState = PowerSwitchIF::SWITCH_OFF;
+  uint32_t timesCalledOn = 0;
+  uint32_t timesCalledOff = 0;
+  uint32_t timesStatusRequested = 0;
+};
+
+struct FuseInfo {
+ public:
+  FuseInfo(uint8_t fuse);
+  uint8_t fuse;
+  uint32_t timesCalled = 0;
+};
+
+class PowerSwitcherMock : public PowerSwitchIF {
+ public:
+  PowerSwitcherMock();
+
+  ReturnValue_t sendSwitchCommand(power::Switch_t switchNr, ReturnValue_t onOff) override;
+  ReturnValue_t sendFuseOnCommand(uint8_t fuseNr) override;
+  ReturnValue_t getSwitchState(power::Switch_t switchNr) const override;
+  ReturnValue_t getFuseState(uint8_t fuseNr) const override;
+  uint32_t getSwitchDelayMs(void) const override;
+
+  void getSwitchInfo(power::Switch_t switcher, SwitchInfo& info);
+  void getFuseInfo(uint8_t fuse, FuseInfo& info);
+
+  uint32_t getAmountSwitchStatWasRequested();
+
+  void initSwitch(power::Switch_t switchNr);
+
+ private:
+  using SwitchOnOffPair = std::pair<power::Switch_t, ReturnValue_t>;
+  using FuseOnOffPair = std::pair<uint8_t, ReturnValue_t>;
+  std::map<power::Switch_t, SwitchInfo> switchMap;
+  std::map<uint8_t, FuseInfo> fuseMap;
+};
+
+#endif /* FSFW_TESTS_SRC_FSFW_TESTS_UNIT_MOCKS_POWERSWITCHERMOCK_H_ */
--- a/tests/src/fsfw_tests/unit/power/CMakeLists.txt
+++ b/tests/src/fsfw_tests/unit/power/CMakeLists.txt
@ -0,0 +1,3 @@
+target_sources(${FSFW_TEST_TGT} PRIVATE
+    testPowerSwitcher.cpp
+)
--- a/tests/src/fsfw_tests/unit/power/testPowerSwitcher.cpp
+++ b/tests/src/fsfw_tests/unit/power/testPowerSwitcher.cpp
@ -0,0 +1,73 @@
+#include <fsfw/power/DummyPowerSwitcher.h>
+#include <fsfw/power/PowerSwitcher.h>
+#include <fsfw_tests/unit/mocks/PowerSwitcherMock.h>
+
+#include <catch2/catch_test_macros.hpp>
+
+#include "objects/systemObjectList.h"
+
+TEST_CASE("Power Switcher", "[power-switcher]") {
+  PowerSwitcherMock mock;
+  PowerSwitcher switcher(&mock, 1);
+  DummyPowerSwitcher dummySwitcher(objects::DUMMY_POWER_SWITCHER, 5, 5, false);
+  PowerSwitcher switcherUsingDummy(&dummySwitcher, 1);
+  SwitchInfo switchInfo;
+  mock.initSwitch(1);
+
+  SECTION("Basic Tests") {
+    REQUIRE(switcher.getFirstSwitch() == 1);
+    REQUIRE(switcher.getSecondSwitch() == power::NO_SWITCH);
+    // Default start state
+    REQUIRE(switcher.getState() == PowerSwitcher::SWITCH_IS_OFF);
+    switcher.turnOn(true);
+    REQUIRE(mock.getAmountSwitchStatWasRequested() == 1);
+    REQUIRE(switcher.getState() == PowerSwitcher::WAIT_ON);
+    REQUIRE(switcher.checkSwitchState() == PowerSwitcher::IN_POWER_TRANSITION);
+    REQUIRE(switcher.active());
+    switcher.doStateMachine();
+    REQUIRE(switcher.getState() == PowerSwitcher::SWITCH_IS_ON);
+    mock.getSwitchInfo(1, switchInfo);
+    REQUIRE(switchInfo.timesCalledOn == 1);
+    REQUIRE(not switcher.active());
+    REQUIRE(mock.getAmountSwitchStatWasRequested() == 2);
+    REQUIRE(switcher.checkSwitchState() == HasReturnvaluesIF::RETURN_OK);
+    REQUIRE(mock.getAmountSwitchStatWasRequested() == 3);
+    switcher.turnOff(false);
+    REQUIRE(mock.getAmountSwitchStatWasRequested() == 3);
+    REQUIRE(switcher.getState() == PowerSwitcher::WAIT_OFF);
+    REQUIRE(switcher.active());
+    REQUIRE(switcher.getState() == PowerSwitcher::WAIT_OFF);
+    switcher.doStateMachine();
+    mock.getSwitchInfo(1, switchInfo);
+    REQUIRE(switcher.getState() == PowerSwitcher::SWITCH_IS_OFF);
+    REQUIRE(switchInfo.timesCalledOn == 1);
+    REQUIRE(switchInfo.timesCalledOff == 1);
+    REQUIRE(not switcher.active());
+    REQUIRE(mock.getAmountSwitchStatWasRequested() == 4);
+  }
+
+  SECTION("Dummy Test") {
+    // Same tests, but we can't really check the dummy
+    REQUIRE(switcherUsingDummy.getFirstSwitch() == 1);
+    REQUIRE(switcherUsingDummy.getSecondSwitch() == power::NO_SWITCH);
+    REQUIRE(switcherUsingDummy.getState() == PowerSwitcher::SWITCH_IS_OFF);
+    switcherUsingDummy.turnOn(true);
+    REQUIRE(switcherUsingDummy.getState() == PowerSwitcher::WAIT_ON);
+    REQUIRE(switcherUsingDummy.active());
+    switcherUsingDummy.doStateMachine();
+    REQUIRE(switcherUsingDummy.getState() == PowerSwitcher::SWITCH_IS_ON);
+    REQUIRE(not switcherUsingDummy.active());
+
+    switcherUsingDummy.turnOff(false);
+    REQUIRE(switcherUsingDummy.getState() == PowerSwitcher::WAIT_OFF);
+    REQUIRE(switcherUsingDummy.active());
+    REQUIRE(switcherUsingDummy.getState() == PowerSwitcher::WAIT_OFF);
+    switcherUsingDummy.doStateMachine();
+    REQUIRE(switcherUsingDummy.getState() == PowerSwitcher::SWITCH_IS_OFF);
+    REQUIRE(not switcherUsingDummy.active());
+  }
+
+  SECTION("More Dummy Tests") {
+
+  }
+}
--- a/tests/src/fsfw_tests/unit/testcfg/objects/systemObjectList.h
+++ b/tests/src/fsfw_tests/unit/testcfg/objects/systemObjectList.h
@ -21,8 +21,9 @@ enum sourceObjects : uint32_t {
  HK_RECEIVER_MOCK = 22,
  TEST_LOCAL_POOL_OWNER_BASE = 25,

-  SHARED_SET_ID = 26
+  SHARED_SET_ID = 26,

+  DUMMY_POWER_SWITCHER = 27
 };
 }