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想请教关于CC2530 I/O input如何设定成短路(short)时触发?

Michael Chang
Intellectual 260 points


各位好,想请教一下:

我想将某一PIN角设定为Input并在其被短路(short)时发送讯号(如同按下某button)。但目前我仅能完成由短路(short)→开路(open)时发送触发讯号，请问究竟要如何设定，才能使得开路(open)→短路(short)成为触发input呢?