如何设置一个gpio管脚既有输入功能又有输出功能,本人在做一个芯片ds1302想让一个管脚接i/o端口既可以输入数据又可以从i/o读取数据,最好有代码给我参考
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如何设置一个gpio管脚既有输入功能又有输出功能,本人在做一个芯片ds1302想让一个管脚接i/o端口既可以输入数据又可以从i/o读取数据,最好有代码给我参考