I am trying to use i2c bus on NanoPi-NEO-Plus2 using your default distro Ubuntu core 16.04 LTS 4.14.0 but “i2cdetect” runs slow even after enabling all i2c interfaces in npi-config and also doesn’t communicate with any chip, can you help me what I am doing wrong? Do you have any tutorial for i2c on NanoPi boards?

Thank you very much.