How to read/set RTC

[Grandpa-G]

In Python Library, I don't see any way to read or set the Real Time Clock.

Am I missing something?

[alexburcea2877]

You have right, we will fix that.

[Grandpa-G]

Also, using the command line I did

megabas 0 rtcwr 12 21 21 09 31 00
it responded done
then
megabas 0 rtcrd
and it returned
00/00/00 00:00:00

Am I doing this incorrectly?

[alexburcea2877]

Looks like you do the right thing, let me know what is the firmware version of the card by issuing "megabas 0 board"

[Grandpa-G]

Firmware ver 01.01, CPU temperature 37 C, Power source 21.50 V, Raspberry 4.98 V

[alexburcea2877]

Please update your card firmware, instructions here: https://github.com/SequentMicrosystems/megabas-rpi/blob/master/update/README.md
Make sure no-one try to access the card during the update process.

[Grandpa-G]

Yeepee. That fixed it.

FYI

1. the spring clip was very loose for the battery
2. the megabas command help says megaind instead of megabas.
   Thanks.

[alexburcea2877]

Thank you for the info will fix it except for the battery holder..

[Grandpa-G]

Thanks.

Is there an overlay to interface with the RTC? Or what is the best way to use the RTC?

[alexburcea2877]

Can I ask what you mean by overlay?
The only options are command line, python (soon), and NodeRed (i have to check but is duable).

[Grandpa-G]

the overlay is given in the config.txt file for the pi.

Here is a reference, mainly the first part. The reference talks about a specific RTC, but gives you the idea.
https://learn.adafruit.com/adding-a-real-time-clock-to-raspberry-pi/set-rtc-time

[alexburcea2877]

Thanks, I will take a look.

[Grandpa-G]

Did you come up with a way to have your RTC interact directly with Raspberry clock? By any chance is your RTC a DS 1307 look-alike?

[alexburcea2877]

Will be nice, but frankly I do not know when I start doing it..
Bottom line is that I can not give you a timeframe for it.