Hello All, I try to access GPIO of NanoPC T4 and use libfriendlyarm-things.so Library for android. -Down load source code https://gitlab.com/friendlyelec/rk3399-android-8.1/tree/master/vendor/friendlyelec/apps/GPIO_LED_Demo -Following instruction in http://wiki.friendlyarm.com/wiki/index.php/Friendl...
It works. I can open I2C port.
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nanopc-t4:/ # chmod 0666 /dev/i2c-0
nanopc-t4:/ # chown system system /dev/i2c-0
11-19 02:52:42.566 2452 2452 I: Open i2c device node files/address.txt
11-19 02:52:42.567 2452 2452 E: i2c_fd : 63
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Thanks