Linux/AM4378: Setting the internal RTC

WooSeok Nam

Intellectual 460 points

Part Number: AM4378

Tool/software: Linux

Hi all.

We made board based on AM4378 SK board.

At this time, how can we set the internal RTC?

And I want to synchronize Linux time and date with RTC.

Finally, it will take Linux time and date from QT.

QT wants to get the time and date of the GPS module and write it to the RTC.

How can i do?

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Hi,

Use the standard Linux commands:

1. At kernel prompt set the system date and time:
date MMDDhhmmYYYY
2. Update the RTC:
hwclock -w
3. For verification you can read the RTC with:
hwclock -r

0 WooSeok Nam over 8 years ago in reply to Biser Gatchev-XID

Intellectual 460 points

Oh! Thanks bro.

hwclock -w is RTC setup command?

And does the RTC continue to flow if only the RTC power of the AM4378 is maintained?

0 Biser Gatchev-XID over 8 years ago in reply to WooSeok Nam

TI__Guru**** 393215 points

Yes, hwclock -w is the command to update the RTC with the current time and date.
Yes, the RTC will continue to work while VDDS_RTC is present.

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Linux/AM4378: Setting the internal RTC