Edited by pmpp at 2017-5-10 04:29
hi @
flyingbaloon , you need root (uid=0) access to make WiringPI-OP works because it access /dev/mem
WiringOP's gpio command works fine on Orange PI PC , I have tested it on H3Droid 1.2.3+ ( which allows terminal root access and gcc 4.9.2 static builds ), while I2C works fine only so far on opipc Lite.