用户在APL 的Linux 上如何使用GPIO？

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用户在APL 的Linux 上如何使用GPIO？

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APL Linux 平台提供了标准的GPIO 驱动，因此可以使用Linux 标准的GPIO 操作方法来定制GPIO 接口，具体的驱动代码请参考kernelsource/drivers/pinctrl/intel/pinctrl-broxton.c，gpio 操作方式举例cd/sys/class/gpio; echo 424 > export ; cd gpio424 等等。

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