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默认的串口映射在P0_2，P0_3。现想将其映射到P1_4，P1_5。不加协议栈可以，加了协议栈，看得云里雾里，不知如何着手，，，
这个网上很多例程，请看这边：http://blog.csdn.net/shawyou/article/details/18148241
例程并没有使用协议栈，而我指的是协议栈里面，相关的寄存器都找不到，不知该改哪些，无从着手，，，
