zephyr/cmake/hex.cmake
Anas Nashif 3ae52624ff license: cleanup: add SPDX Apache-2.0 license identifier
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier.  Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.

By default all files without license information are under the default
license of Zephyr, which is Apache version 2.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-04-07 08:45:22 -04:00

57 lines
1.6 KiB
CMake

# SPDX-License-Identifier: Apache-2.0
# from https://gist.github.com/korzo89/71a6de0f388f7cf8b349101b0134060c
function(from_hex HEX DEC)
string(SUBSTRING "${HEX}" 2 -1 HEX)
string(TOUPPER "${HEX}" HEX)
set(_res 0)
string(LENGTH "${HEX}" _strlen)
while(_strlen GREATER 0)
math(EXPR _res "${_res} * 16")
string(SUBSTRING "${HEX}" 0 1 NIBBLE)
string(SUBSTRING "${HEX}" 1 -1 HEX)
if(NIBBLE STREQUAL "A")
math(EXPR _res "${_res} + 10")
elseif(NIBBLE STREQUAL "B")
math(EXPR _res "${_res} + 11")
elseif(NIBBLE STREQUAL "C")
math(EXPR _res "${_res} + 12")
elseif(NIBBLE STREQUAL "D")
math(EXPR _res "${_res} + 13")
elseif(NIBBLE STREQUAL "E")
math(EXPR _res "${_res} + 14")
elseif(NIBBLE STREQUAL "F")
math(EXPR _res "${_res} + 15")
else()
math(EXPR _res "${_res} + ${NIBBLE}")
endif()
string(LENGTH "${HEX}" _strlen)
endwhile()
set(${DEC} ${_res} PARENT_SCOPE)
endfunction()
function(to_hex DEC HEX)
while(DEC GREATER 0)
math(EXPR _val "${DEC} % 16")
math(EXPR DEC "${DEC} / 16")
if(_val EQUAL 10)
set(_val "A")
elseif(_val EQUAL 11)
set(_val "B")
elseif(_val EQUAL 12)
set(_val "C")
elseif(_val EQUAL 13)
set(_val "D")
elseif(_val EQUAL 14)
set(_val "E")
elseif(_val EQUAL 15)
set(_val "F")
endif()
set(_res "${_val}${_res}")
endwhile()
set(${HEX} "0x${_res}" PARENT_SCOPE)
endfunction()