I have a NR flow set to monitor (and email) a couple GPIO pins (power outage, etc) which are displayed on a Dashboard as red/green 'LEDs'. The problem is that when I restart the Pi, the value of those pins is re-read (to populate the dashboard LEDs, which are otherwise black for NULL input) which results in a notification being sent. i.e. "Outage: Mains power has been restored".
I just switched to the PiGPIOd library+node hoping that might have some options to deal with this, but it doesn't.
Hey @Colin, yep we're on the same page. The problem is that if I block the first signal from the GPIO node, then the dashboard 'LED' is never given a state, so it shows a black circle for null.
What I guess I need is a way to block the first message only if it is a 1. That way I could detect a situation where, say, the mains power supply went out during a reboot of the pi. That's the only edge case I can think of.