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Hi teams:
I would like to ask about clock settings when using an external RTC.
Using DriverLib, we call the Function in the following order to configure LFXT.
1. CS_turnOnLFXT(CS_LFXT_DRIVE_2)
2. CS_bypassLFXT()
An external RTC is connected to the J.4 pin.
When operating with this setting, clearing of OSC flut Flag inside CS_turnOnLFXT,
An infinite loop occurs and processing cannot proceed further.
If you comment out While in CS_turnOnLFXT, you can proceed to the next step.
CS_bypassLFXT also has the same OSC flut Flag clearing process, so
Is it okay to delete the OSC flout Flag clearing process inside CS_turnOnLFXT?
Since I want to configure LFXTDRIVE, I want to call CS_turnOnLFXT before CS_bypassLFXT.
(If CS_turnOnLFXT was deleted, the value of the PMMIFG register was not updated when returning from LPM3.5)
I look forward to your reply, thank you.
What do you mean by "external RTC"?
Typically an external RTC chip has its own oscillator and measures time independently of the host processor, using chip-to-chip communication to transfer time data back and forth.
Are you talking about a crystal or an oscillator?
It means an oscillator.
The external RTC chip used has no crystal, only an oscillator.
Hi Hiroki,
Sorry for reply later, does this issue have been resolved? Do you still need support from my side?
Thanks!
Best Regards
Johnson
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