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Forum Index : Microcontroller and PC projects : OPTION RTC AUTO ENABLE

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VK2AHB
Regular Member

Joined: 28/07/2022
Location: Australia
Posts: 51

Posted: 12:51am 20 Oct 2022

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I find that by powering off that I sometimes lose this option. Other options remain, but this one will disappear. Is there a reason for this?

Paul VK2AHB

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10628

Posted: 07:06am 20 Oct 2022

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Quote Is there a reason for this?

This happens if the firmware doesn't see the RTC during any reset and is intended functionality in this case.

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2832

Posted: 07:24am 20 Oct 2022

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Perhaps adding this to your program might work.

Sub MM.Startup
If Right$(Date$) = "2000" Then RTC GetTime
End Sub
.

VK2AHB
Regular Member

Joined: 28/07/2022
Location: Australia
Posts: 51

Posted: 11:29am 20 Oct 2022

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That's exactly what I've done. I then prompt for date and time input to set it.

Still doesn't explain why the option disappears though.

Paul

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 8304

Posted: 02:16pm 20 Oct 2022

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Is your RTC module (or whatever) making good contact and have a good battery?
Edited 2022-10-21 00:16 by Mixtel90

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

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