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看了您之前的帖子，您下载5509的CSL了吗？ http://www.ti.com/tool/sprc133
检查一下工程里面这两个选项里面有没有都添加。添加的路径一定要是电脑里安装的路径。
Assuming CSL is installed at <User_Install_Dir> , all the existing CCS project files need to add :
-i"<User_Install_Dir>\include" in compiler options and
-l"<User_Install_Dir>\lib" in linker options
