Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

CMakeLists.txt@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 #
<> 144:ef7eb2e8f9f7 2 # mbed-2 yotta-compatible build system
<> 144:ef7eb2e8f9f7 3 #
<> 144:ef7eb2e8f9f7 4
<> 144:ef7eb2e8f9f7 5 # make sure necessary features are enabled:
<> 144:ef7eb2e8f9f7 6 project(mbed-classic)
<> 144:ef7eb2e8f9f7 7 enable_language(ASM)
<> 144:ef7eb2e8f9f7 8
<> 144:ef7eb2e8f9f7 9 # override compilation flags:
<> 144:ef7eb2e8f9f7 10 if(CMAKE_C_COMPILER_ID MATCHES GNU)
<> 144:ef7eb2e8f9f7 11 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
<> 144:ef7eb2e8f9f7 12 endif()
<> 144:ef7eb2e8f9f7 13
<> 144:ef7eb2e8f9f7 14 # the mbed.a library is built from two sets of source files + include
<> 144:ef7eb2e8f9f7 15 # directories:
<> 144:ef7eb2e8f9f7 16 #
<> 144:ef7eb2e8f9f7 17 # MBED_COMMON_SOURCES: the source files that are the same for all targets,
<> 144:ef7eb2e8f9f7 18 # these are easily found by globbing:
<> 144:ef7eb2e8f9f7 19 #
<> 144:ef7eb2e8f9f7 20 file(GLOB MBED_COMMON_SOURCES "common/*.cpp" "common/*.c")
<> 144:ef7eb2e8f9f7 21 #
<> 144:ef7eb2e8f9f7 22 # (always include the hal header directory, too)
<> 144:ef7eb2e8f9f7 23 set(MBED_COMMON_INCLUDE_DIRS "hal")
<> 144:ef7eb2e8f9f7 24
<> 144:ef7eb2e8f9f7 25 # and MBED_TARGET_SOURCES: these depend on which target we are building for. To
<> 144:ef7eb2e8f9f7 26 # find these we need to walk the directories in targets/, and wherever we see a
<> 144:ef7eb2e8f9f7 27 # TARGET_<something> name, recurse only if <something> matches what we're
<> 144:ef7eb2e8f9f7 28 # currently building for
<> 144:ef7eb2e8f9f7 29 macro(mbed_find_target_dirs PARENT_DIRECTORY SOURCES_LIST INCLUDES_LIST)
<> 144:ef7eb2e8f9f7 30 # append this directory to the search path:
<> 144:ef7eb2e8f9f7 31 list(APPEND ${INCLUDES_LIST} "${PARENT_DIRECTORY}")
<> 144:ef7eb2e8f9f7 32 # add all source files in this directory to the sources list:
<> 144:ef7eb2e8f9f7 33 file(GLOB sources "${PARENT_DIRECTORY}/*.cpp" "${PARENT_DIRECTORY}/*.c" "${PARENT_DIRECTORY}/*.s" "${PARENT_DIRECTORY}/*.S" )
<> 144:ef7eb2e8f9f7 34 list(APPEND ${SOURCES_LIST} ${sources})
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 # get a list of all subdirectories that we want to recurse into:
<> 144:ef7eb2e8f9f7 37 file(GLOB dir_children RELATIVE "${PARENT_DIRECTORY}" "${PARENT_DIRECTORY}/*")
<> 144:ef7eb2e8f9f7 38 set(matching_subdirs "")
<> 144:ef7eb2e8f9f7 39 foreach(child ${dir_children})
<> 144:ef7eb2e8f9f7 40 if(IS_DIRECTORY "${PARENT_DIRECTORY}/${child}")
<> 144:ef7eb2e8f9f7 41 # is this directory name a magic one?
<> 144:ef7eb2e8f9f7 42 if("${child}" MATCHES "^TARGET_")
<> 144:ef7eb2e8f9f7 43 # target-magic: recurse if the MBED_LEGACY_TARGET_DEFINITIONS **list**
<> 144:ef7eb2e8f9f7 44 # contains a matching value:
<> 144:ef7eb2e8f9f7 45 foreach(legacy_magic_def ${MBED_LEGACY_TARGET_DEFINITIONS})
<> 144:ef7eb2e8f9f7 46 # we could probably unroll the list into a single regex if
<> 144:ef7eb2e8f9f7 47 # this is a performance problem:
<> 144:ef7eb2e8f9f7 48 if("${child}" MATCHES "^TARGET_${legacy_magic_def}$")
<> 144:ef7eb2e8f9f7 49 list(APPEND matching_subdirs ${child})
<> 144:ef7eb2e8f9f7 50 break()
<> 144:ef7eb2e8f9f7 51 endif()
<> 144:ef7eb2e8f9f7 52 endforeach()
<> 144:ef7eb2e8f9f7 53 elseif("${child}" MATCHES "^TOOLCHAIN_")
<> 144:ef7eb2e8f9f7 54 # toolchain-magic: (recurse if the MBED_LEGACY_TOOLCHAIN matches
<> 144:ef7eb2e8f9f7 55 # this name)
<> 144:ef7eb2e8f9f7 56 if("${child}" MATCHES "^TOOLCHAIN_${MBED_LEGACY_TOOLCHAIN}$")
<> 144:ef7eb2e8f9f7 57 list(APPEND matching_subdirs "${child}")
<> 144:ef7eb2e8f9f7 58 endif()
<> 144:ef7eb2e8f9f7 59 else()
<> 144:ef7eb2e8f9f7 60 # not special: always recurse into this directory
<> 144:ef7eb2e8f9f7 61 list(APPEND matching_subdirs "${child}")
<> 144:ef7eb2e8f9f7 62 endif()
<> 144:ef7eb2e8f9f7 63 endif()
<> 144:ef7eb2e8f9f7 64 endforeach()
<> 144:ef7eb2e8f9f7 65 #message("matching_subdirs: ${matching_subdirs}")
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 # recurse:
<> 144:ef7eb2e8f9f7 68 foreach(subdir ${matching_subdirs})
<> 144:ef7eb2e8f9f7 69 mbed_find_target_dirs("${PARENT_DIRECTORY}/${subdir}" ${SOURCES_LIST} ${INCLUDES_LIST})
<> 144:ef7eb2e8f9f7 70 endforeach()
<> 144:ef7eb2e8f9f7 71 endmacro()
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 set(MBED_TARGET_SOURCES "")
<> 144:ef7eb2e8f9f7 74 set(MBED_TARGET_INCLUDE_DIRS "")
<> 144:ef7eb2e8f9f7 75 mbed_find_target_dirs("${CMAKE_CURRENT_SOURCE_DIR}/targets" MBED_TARGET_SOURCES MBED_TARGET_INCLUDE_DIRS)
<> 144:ef7eb2e8f9f7 76 #message("found target sources: ${MBED_TARGET_SOURCES}")
<> 144:ef7eb2e8f9f7 77 #message("found target include dirs: ${MBED_TARGET_INCLUDE_DIRS}")
<> 144:ef7eb2e8f9f7 78
<> 144:ef7eb2e8f9f7 79 # unfortunately, for ARMCC, the startup code needs to be provided as an object
<> 144:ef7eb2e8f9f7 80 # on the command line (not as part of an archive). To do this we override the
<> 144:ef7eb2e8f9f7 81 # CMake add_executable command.
<> 144:ef7eb2e8f9f7 82 if(CMAKE_C_COMPILER_ID STREQUAL "ARMCC")
<> 144:ef7eb2e8f9f7 83 set(MBED_TARGET_STARTUP_CODE_SOURCES "")
<> 144:ef7eb2e8f9f7 84 foreach(src ${MBED_TARGET_SOURCES})
<> 144:ef7eb2e8f9f7 85 if("${src}" MATCHES .*startup_.*\\.[sS])
<> 144:ef7eb2e8f9f7 86 LIST(APPEND MBED_TARGET_STARTUP_CODE_SOURCES "${src}")
<> 144:ef7eb2e8f9f7 87 endif()
<> 144:ef7eb2e8f9f7 88 endforeach()
<> 144:ef7eb2e8f9f7 89 add_library(mbed_classic_startupcod OBJECT ${MBED_TARGET_STARTUP_CODE_SOURCES})
<> 144:ef7eb2e8f9f7 90 macro (add_executable _name)
<> 144:ef7eb2e8f9f7 91 _add_executable(${ARGV} $<TARGET_OBJECTS:mbed_classic_startupcod>)
<> 144:ef7eb2e8f9f7 92 endmacro()
<> 144:ef7eb2e8f9f7 93 endif()
<> 144:ef7eb2e8f9f7 94
<> 144:ef7eb2e8f9f7 95 # we have to append any target-specific include dirs to the global include dirs
<> 144:ef7eb2e8f9f7 96 # list, so that any indirect includes (e.g. via mbed.h) of files in those
<> 144:ef7eb2e8f9f7 97 # directories will work:
<> 144:ef7eb2e8f9f7 98 # (non-target-specific include dirs are listed in extraIncludes in module.json)
<> 144:ef7eb2e8f9f7 99 foreach(dir ${MBED_TARGET_INCLUDE_DIRS})
<> 144:ef7eb2e8f9f7 100 set_property(GLOBAL APPEND PROPERTY YOTTA_GLOBAL_INCLUDE_DIRS ${dir})
<> 144:ef7eb2e8f9f7 101 endforeach()
<> 144:ef7eb2e8f9f7 102
<> 144:ef7eb2e8f9f7 103 # finally, we can construct a library using the determined set of include paths
<> 144:ef7eb2e8f9f7 104 # + source files. Note that the library name must match the name of the yotta
<> 144:ef7eb2e8f9f7 105 # module (defined in module.json) for this module to link properly with other
<> 144:ef7eb2e8f9f7 106 # yotta modules.
<> 144:ef7eb2e8f9f7 107 include_directories(${MBED_COMMON_INCLUDE_DIRS})
<> 144:ef7eb2e8f9f7 108 include_directories(${MBED_TARGET_INCLUDE_DIRS})
<> 144:ef7eb2e8f9f7 109 add_library(mbed-classic
<> 144:ef7eb2e8f9f7 110 ${MBED_COMMON_SOURCES}
<> 144:ef7eb2e8f9f7 111 ${MBED_TARGET_SOURCES}
<> 144:ef7eb2e8f9f7 112 )