RTC library

What could be included in further releases, or for the forum.
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Nutsy
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Re: RTC library

Post by Nutsy » Sun Mar 26, 2017 12:43 pm

ok iim intrigued... I would like a RTC on my speedo project... i was going to use one of those external RTC modules... But I remembered some one saying there is one built in.

I guess you supply power to vbat, to keep the rtc powered when the rest of the MCU is unpowered?
How much voltage? 1.5? 3v?

And im assuming there isnt already a functioning library?

Hence this thread? :D

I guess a little guide would be useful... or if you know of any documentation I can read even better :D

Sorry for the dumb post, im fairly tired and backs in pain............ (crippled)
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martinayotte
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Re: RTC library

Post by martinayotte » Sun Mar 26, 2017 1:02 pm

The specs mentioned Vbat should be between 1.8V and 3.6V.
I'm personally using a SuperCapacitor instead of a battery.
The library on github is working fine.
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Nutsy
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Re: RTC library

Post by Nutsy » Sun Mar 26, 2017 2:12 pm

Oh which github? Rogers STM32?
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martinayotte
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Re: RTC library

Post by martinayotte » Sun Mar 26, 2017 2:25 pm

Yes !
https://github.com/rogerclarkmelbourne/ ... es/RTClock
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Nutsy
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Re: RTC library

Post by Nutsy » Sun Mar 26, 2017 2:53 pm

thankies
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Nutsy
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Re: RTC library

Post by Nutsy » Mon Mar 27, 2017 11:29 am

Only asking as I cant play with it for a few days......

Does the built in rtc work off unix time? So you can derive a date from the number? Or is it simple 24 hour clock and nothing else?

i see the gettime function seems to be call to check the time. But I dont see any get date or anything else...
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ahull
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Re: RTC library

Post by ahull » Mon Mar 27, 2017 11:47 am

Nutsy wrote:Only asking as I cant play with it for a few days......

Does the built in rtc work off unix time? So you can derive a date from the number? Or is it simple 24 hour clock and nothing else?

i see the gettime function seems to be call to check the time. But I dont see any get date or anything else...
The RTC can be set using a Unix Time Stamp. If you look in the my github code for the o-scope one of the serial commands I implemented sets the clock using a unix time stamp, and so far as I recall, somewhere I gave an example of how to do this directly from the command line on a Linux box, so you could probably use that example for your purposes.
- Andy Hull -
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HutTheNut
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Re: RTC library

Post by HutTheNut » Tue Apr 03, 2018 3:54 pm

Hi,

Having search for "RTC STM32L4" and reading the thread.

I'm wondering why the link is for F1
https://github.com/rogerclarkmelbourne/ ... es/RTClock

And I is see no L4 section at all at the basic link, only F1/F3/F4.
https://github.com/rogerclarkmelbourne/Arduino_STM32

Does anyone know where I can find the L4 libraries..

Best regards,
Frank
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victor_pv
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Re: RTC library

Post by victor_pv » Tue Apr 03, 2018 4:08 pm

viewtopic.php?f=42&t=1092
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HutTheNut
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Re: RTC library

Post by HutTheNut » Tue Apr 03, 2018 4:31 pm

thanks
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