如题
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板子上通过0欧姆电阻连在一起了。还有PD1和PB7也是。
参考开发板原理图的R9、R10
这样做就可以用一个GPIO来设置高低电平,另外一个GPIO设置为输入来采样或者是设置为中断。然后可以验证相关的代码
LaunchPad的硬件说明和原理图在这里:
http://www.ti.com/lit/pdf/spmu296
20页就是原理图了。