Prevent pin from being pulled low at boot
In Ubuntu 16.04, how can I make sure a pin is held high throughout the boot process? I have tried setting pin levels on boot in an init script (on ubuntu, run level 0), while this works there is a 5-10 second delay during boot during which the pin I need to keep high (and which is already held high with a pull-up resistor) is pulled low. I either need the UpBoard to leave the pin floating during boot so it's pulled high by the pullup resister, or pull it high, anything but pulling it actively low. How can I accomplish this?