iar项目目录说明

$CUR_DIR$ Current directory
$CUR_LINE$ Current line
$EW_DIR$ Top directory of IAR Embedded Workbench, for example c:\program files\iar systems\embedded workbench4.n
$EXE_DIR$ Directory for executable output
$FILE_BNAME$ Filename without extension
$FILE_BPATH$ Full path without extension
$FILE_DIR$ Directory of active file, no filename
$FILE_FNAME$ Filename of active file without path
$FILE_PATH$ Full path of active file (in Editor, Project, or Message window)
$LIST_DIR$ Directory for list output
$OBJ_DIR$ Directory for object output
$PROJ_DIR$ Project directory
$PROJ_FNAME$ Project file name without path
$PROJ_PATH$ Full path of project file
$TARGET_DIR$ Directory of primary output file
$TARGET_BNAME$ Filename without path of primary output file and without extension
$TARGET_BPATH$ Full path of primary output file without extension
$TARGET_FNAME$ Filename without path of primary output file
$TARGET_PATH$ Full path of primary output file
$TOOLKIT_DIR$ Directory of the active product, for example c:\program files\iar systems\embedded workbench 4.n\cpuname

常用的目录说明：
$TARGET_DIR$\
表示生成的目标文件（.hex、.bin）所在的目录

$PROJ_DIR$\
表示当前项目所在路径，即*.ewp文件所在目录

$TOOLKIT_DIR$\
表示工具链下的目录