With all cables unhooked:
Originally Posted by dondino
Your situation is pretty rare I think? Is there something in your automation system that could be triggering the Onkyo to come on? My 905 does not come on after a power hit.
It will come on, but only if it was on before the power outage. If it was initially in standby, it will stay in standby following a power outage.
You are right, part of the issue was my code though
It turns out the Onkyo replies with it's status when it gets power back. Part of the status is a string giving the current selected source. When my driver receives this string, it changes the source with in the home automation program (Motorola Premise) to match. This results in the same source string being sent back to the Onkyo and it comes on even though I never really sent the !PWR01 string!Solution:
It turns out that when the 905 comes back from standby or loses power, it sends the following hex data: 00. Motorola Premise interprets this as a zero length string. Thus, the new version of code checks for a received line with a zero length string and when it gets one, a timer is set to turn all equipment off.