Digital Clock Using RTC

RE: Digital Clock Using RTC

AZZY — Fri, 05 Aug 2022 12:28:26 GMT

ok sir Thanks

i will work on it...........

RE: Digital Clock Using RTC

shiva74638 — Fri, 05 Aug 2022 12:18:34 GMT

nrf RTC libraries doesn't provide any hour, minutes info. As I said it is a real time counter it can only give the number of clock ticks passed by from the point it started. you have to calculate hour minutes sec. etc. from that clock ticks value in your code.

RE: Digital Clock Using RTC

AZZY — Fri, 05 Aug 2022 12:14:13 GMT

yes you are right sir........

But i am unable to read HOUR SEC AND MINUTE in nrf........

RE: Digital Clock Using RTC

shiva74638 — Mon, 01 Aug 2022 11:39:20 GMT

Hi AZZY,
I think you are confusing Real time COUNTER with Real time CLOCK.
The nrf52840 has REAL TIME COUNTER. where as ds1307 is a real time clock module.
Any time keeping electronic device resets to zero when powered off.
If I remember correctly the ds1307 is also powered by a coin cell which keeps it ticking even though the main MCU is turned off. If you want implement the same you should run the device without powering off.
Hope it helps.

RE: Digital Clock Using RTC

Sigurd Hellesvik — Wed, 27 Jul 2022 07:16:07 GMT

Hi Azzy,

In that case, see Edvin's answer in RE: how to set target time for specific days

Regards,
Sigurd Hellesvik

RE: Digital Clock Using RTC

AZZY — Wed, 27 Jul 2022 07:01:23 GMT

YES SIR

There is no required examle there in sdk5 regarding where minute, hour and seconds can be easily read "

RE: Digital Clock Using RTC

AZZY — Wed, 27 Jul 2022 06:54:25 GMT

how to initialize rtc ?

How to read

HOUR,MIN,SEC,DAY,MONTH,YEAR,DATE CHARACTER FROM RTC

RE: Digital Clock Using RTC

Sigurd Hellesvik — Wed, 27 Jul 2022 06:49:42 GMT

Hi Azzy,

[quote user="AZZY"]there is no required example there in sdk5 regarding this[/quote]

do you mean:

"There is no required examle there in sdk5 regarding the external rtc ds1307"

"There is no required examle there in sdk5 regarding where minute, hour and seconds can be easily read "

Regards,
Sigurd Hellesvik

RE: Digital Clock Using RTC

AZZY — Wed, 27 Jul 2022 06:02:48 GMT

I am little confused how to start rtc in it.

as I worked on external rtc ds1307 where minute, hour and seconds can be easily read

there is no required example there in sdk5 regarding this

RE: Digital Clock Using RTC

Sigurd Hellesvik — Tue, 26 Jul 2022 14:14:27 GMT

Hi Azzy,

Can you give some details for the error?
See my previous answers for needed details:

[quote user="Sigurd Hellesvik"]Do you get any error messages?
Do you get anything on the screen?
Do you get any time?[/quote]

Regards,
Sigurd Hellesvik

RE: Digital Clock Using RTC

AZZY — Tue, 26 Jul 2022 05:36:00 GMT

Still i am unable to start rtc to display date time ...... on lcd

RE: Digital Clock Using RTC

AZZY — Thu, 21 Jul 2022 11:06:52 GMT

I have gone through the rtc example but I have not got anything related to it

RE: Digital Clock Using RTC

Sigurd Hellesvik — Thu, 21 Jul 2022 08:52:03 GMT

Hi,

In that case, I would have a look at our Real Time Counter Example.

Regards,
Sigurd Hellesvik

RE: Digital Clock Using RTC

AZZY — Thu, 21 Jul 2022 08:48:59 GMT

I have to print date and time on lcd 16x2

RE: Digital Clock Using RTC

AZZY — Thu, 21 Jul 2022 08:47:19 GMT

Dear sir

I am using nrf52840-DK board as hardware

and

nrf5_SDK_17.1.0

RE: Digital Clock Using RTC

Sigurd Hellesvik — Thu, 21 Jul 2022 08:41:09 GMT

Hi,

We have two SDKs, and they use different code for the RTC. So first:
Do you use the nRF5 SDK or the nRF Connect SDK?

Regards,
Sigurd Hellesvik

RE: Digital Clock Using RTC

AZZY — Thu, 21 Jul 2022 06:41:13 GMT

srry sir actually my lcd was not working properly

i am using 16X2 lcd

Now my lcd is working fine but i dont know how to enable internal rtc

i want to show date and time over there...

help me regarding this

RE: Digital Clock Using RTC

Sigurd Hellesvik — Tue, 19 Jul 2022 06:51:08 GMT

Hi Azzy,

But what do you men by "it not working properly"?

Do you get any error messages?
Do you get anything on the screen?
Do you get any time?

Regards,
Sigurd Hellesvik

RE: Digital Clock Using RTC

AZZY — Tue, 19 Jul 2022 04:32:53 GMT

Actually i want to display time on 16x2 lcd ....

RE: Digital Clock Using RTC

Sigurd Hellesvik — Mon, 18 Jul 2022 11:16:19 GMT

Hi Azzy,

[quote user=""]its not working properly..[/quote]

Can you give some more details on this?

Regards,
Sigurd Hellesvik