Hibernation module reset

Sravan Janamaddi

Hi,

I wrote a small program in which HIB module is configured in calender mode and then using switch I am re configuring it to normal mode, but HIB module is unable to work.

Even though I used HibernationDisable() and HibernationEnable()

and also this code snippet (before changing it's role)

SysCtlPeripheralDisbale(SYSCTL_PERIPH_HIBERNATE);

SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);

SysCtlPeripheralReset(SYSCTL_PERIPH_HIBERNATE);

So how can I reset HIB hardware module without POR using software.

over 10 years ago

0 Amit Ashara over 10 years ago

TI__Guru**** 244400 points

Hello Sravan,

The Hibernate module can only be reset by a full removal of VDD and VBAT supplies if RTC is enabled. If it is to be reset then RTC, external wake and tamper functions have to be disabled.

Regards
Amit

0 Sravan Janamaddi over 10 years ago in reply to Amit Ashara

Intellectual 525 points

Hi Amit,

Thanks for response

Ya I got it ,but is there a way that without reset of my device can I change the calender mode to RTC mode?
Wil it work?

My experiment shows, I enabled in calender mode and at some point of time , I am making it RTC normal mode (disabling calender mode).When I trying to get RTC load register value I am always getting 0 and also Calender mode remain still in continue.

So is there a way that I can turn off power supplies from hardware and again I turn it on.

Sysctlpoweroff () API won't work for this. I need to change it from calender to RTC mode without reboot, Is there any possible way ?

Thanks & Regards
Sravan

0 Amit Ashara over 10 years ago in reply to Sravan Janamaddi

TI__Guru**** 244400 points

Hello Sravan,

I am not quite sure why you would be moving between the two modes. Also it is not clear what the steps you are doing to switch the modes?

How does the H/W switch on the power when it is un-powered? Have you thought about that?

Regards
Amit

0 Sravan Janamaddi over 10 years ago in reply to Amit Ashara

Intellectual 525 points

Hi Amit,

My requirement is that. See the following steps:

HibernateRTCDisable() ;
HibernateDisable();
HibernateClockConfig(HIBERNATE_OSC_LOWDRIVE | HIBERNATE_OUT_SYSCLK);
HibernateEnableExpClk(SYSTEM_CLOCK_RATE_HZ);
HibernateRTCEnable() ;
HibernateRTCSet(0) ;

This is failing and it continuous i n calender mode itself

0 Sravan Janamaddi over 10 years ago in reply to Sravan Janamaddi

Intellectual 525 points

Hi Amit,

I got the issue.

It is because we are not resetting the counter register to rtc mode. It is still continuing in 24 hour format. That is the reason.

Thanks & Regards
Sravan

0 Amit Ashara over 10 years ago in reply to Sravan Janamaddi

TI__Guru**** 244400 points

Hello Sravan

Glad that you figured it out

Regards
Amit

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Hibernation module reset