MSPM0L2228: RTC Lock function

Koichiro Tashiro

Part Number: MSPM0L2228
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi,

My customer wants to enable RTC_A counter lock function.
When he writes 0x22000001 to RTCLOCK register from CCS, it works as expected.

But when he enabled "Enable Write Protect" checkbox in sysconfig, it does not seem working.
(PROTECT bit is not set)

He also tried to add below API in the code, but the result was the same (PROTECT bit is not set). Why?

DL_RTC_Common_enableWriteProtect(RTC_A);

Thanks and regards,
Koichiro Tashiro

over 1 year ago

0 Cash Hao11 over 1 year ago

TI__Mastermind 46765 points

Hi Koichiro,

I do see this issue on my side.

The DL_RTC_Common_enableWriteProtect() seems not working somehow. Let me check with software team to see if they have some thoughts on it.

Best regards,

Cash Hao

0 Koichiro Tashiro over 1 year ago in reply to Cash Hao11

TI__Mastermind 22945 points

Hi Cash,

Do you have any updates for this item?

Thanks and regards,
Koichiro Tashiro

0 Pengfei Xie over 1 year ago in reply to Koichiro Tashiro

TI__Genius 10705 points

Hi Koichiro,

It seems the register you checked in debug mode is LFSS RTCLOCK register, and there is not standalone RTC register showing in debug register windows.

And for enable LFSS RTCLOCK function, you could use:

LFSS->IPSPECIFIC_RTC.RTCLOCK = 0x22000001;

Best Regards,

Pengfei

0 Koichiro Tashiro over 1 year ago in reply to Pengfei Xie

TI__Mastermind 22945 points

Hi Pengfei,

Do you mean below API does not work for RTC_A in LFSS?
DL_RTC_Common_enableWriteProtect(RTC_A);

And below instruction should be used instead?
LFSS->IPSPECIFIC_RTC.RTCLOCK = 0x22000001;

If so, is this expected or it is a bug in software?

Thanks and regards,
Koichiro Tashiro

+1 Pengfei Xie over 1 year ago in reply to Koichiro Tashiro

TI__Genius 10705 points

Hi Koichiro,

According to my test result, DL_RTC_Common_enableWriteProtect(RTC_A) has no function of write protection of RTC registers.

I think it is kind of software bug. The achieve of this API should be setting the RTC LOCK register in LFSS module.

Best Regards,

Pengfei

0 Koichiro Tashiro over 1 year ago in reply to Pengfei Xie

TI__Mastermind 22945 points

Hi Pengfei,

I see. Could you report the bug to SW team?

Thanks and regards,
Koichiro Tashiro

+1 Pengfei Xie over 1 year ago in reply to Koichiro Tashiro

TI__Genius 10705 points

Hi Koichiro,

Sure. We need to update the achievement of DL_RTC_Common_enableWriteProtect, to operate at LSFF register group.

Regards,

Pengfei

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MSPM0L2228: RTC Lock function