OrangePi Zero, default GPIO signal level

[ChrisO]

Hi

I'm trying to use OpiZero with a relais module. I noticed, during the boot the pins I tried (12 and 11, physical 3 resp 5) go high, which makes impossible

to manage the relais module.

Is it a HW/SW bug or limitation or something what can be configured somehow.

I would expect the level to be "nothing" ;-)

 

Thanks

Chris

[ChrisO]

Replying to my own question, just for reference.

I found the reason for the high level here: http://linux-sunxi.org/images/4/ ... _Datasheet_V1.2.pdf
There are four pins pulled-up at startup, I obviously must have choosen one of them. With GPIO6 pin it works as I expected it to.