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Android 5.1 Gpio Access

Moderators: chensy, FATechsupport

Hi all,
Can anybody help me for accessing Gpio in Android 5.1?
My app works correctly but it doesn't work in Android 5.1.
It comes with this error: "D/FriendlyARM-HW-Lib: Unable to open file /sys/devices/virtual/gpio/gpio74/direction"
I using s5p4418-android-sd4g-20170613.img android.

Thanks .

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