用CCS5.5新建一个28335的工程时，最后编译，总是出现这样的错误：
Description Resource Path Location Type
#10010 errors encountered during linking; "LED1.out" not built LED1 C/C++ Problem
<a href="file:/C:/ti/ccsv5/tools/compiler/dmed/HTML/10234.html">#10234-D</a> unresolved symbols remain LED1 C/C++ Problem
unresolved symbol _ADC_cal, first referenced in ./DSP2833x_SysCtrl.obj LED1 C/C++ Problem
怎么解？
