OSPi & the RTC | OpenSprinkler

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This topic has 1 reply, 2 voices, and was last updated 9 years, 9 months ago by Ray.

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April 15, 2015 at 8:35 pm #36733

ajm1
Participant

I am laying out a customized version of OSPi and have a few questions regarding the RTC.

I understand that the Pi does not have a time source, but if using NTP, is the RTC necessary? Are there interlocks in place that prevent the software from activating zones if there is no valid timesource (for example, before NTP syncs the local clock)?

April 16, 2015 at 12:12 am #36750

Ray
Keymaster

The RTC is optional. It’s really meant for situations where the controller is back from power loss, but there is no Internet yet (so the controller cannot perform NTP sync and will start with a wrong time).
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