以上是F247管脚图，很显然P2,P3,P5每个都有三个功能
MSP430x2xx Family User's Guide 里也有
但是为什么之前的帖子说没有？
http://www.deyisupport.com/question_answer/microcontrollers/msp430/f/55/t/16331.aspx
而且IAR MSP430F247.h 里的确也没有
我都弄晕了，到底有没有PxSEL2寄存器？有的话我的头文件应该怎么修改？
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