I have set up i2c bit banging (bashing) on my Orange Pi one - not without difficulty, There are three issues I would like to explore:
- existing drivers, gpioiic - nanosleep - input/output on same gpio pin Input and Output on same pin On reading the Allwinner H3 documentation I do not see any settings to allow a bidirectional i/o pin, something that is required for i2c. Yet the H3 has built in i2c support, so the hardware must be able to do it. Openbsd only allows setting the direction of the pin at secure level 0. Why? To make my bit-bashing work I tied two pins together and set one up as input and one as output.
