cc3200 time(NULL) function in LPDS

Srdjan Stankovic1

Other Parts Discussed in Thread: CC3200

Hi,

I used function time(NULL) from time.h in my earlier application and it is gave me a rtc time.

Now I use LPDS(low power deep sleep) mode of cc3200. When I use time() function my program stops in that line where I call time(NULL). Problem occurs when it first time wakes up from LPDS, before it first time goes to LPDS time(NULL) return correct value.

What is happens or what to do to get a rtc time in LPDS mode???

Thanks, Srdjan

over 11 years ago

0 Rahul Goyal over 11 years ago

TI__Intellectual 1500 points

Hi Srdjan,

One question i have:

1. Are you sure the value you are getting in return is the correct RTC value(and not just a junk value)? the reason i am asking this is because "time.h" is not to be used for getting real time value as its implementation in not provided.

if you wish to use RTC in LPDS mode, first you have to set the current time using cc_rtc_set() API. subsequently you can get the RTC time using cc_rtc_get().

For more information, please refer to Working with time of day (real time) section @ http://processors.wiki.ti.com/index.php/CC32xx_Power_Management_Framework

Regards,

Rahul

0 Naveen Narayanan over 11 years ago in reply to Rahul Goyal

TI__Expert 5025 points

Hi Srdjan,

Hope this answered your query. I am closing the thread, if issue still exist please open a new thread and add a link to this one for reference.

Best regards,

Naveen

0 Srdjan Stankovic1 over 11 years ago in reply to Naveen Narayanan

Intellectual 375 points

Hi Naveen,

your answer has solved problem.

Thanks, Srki

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cc3200 time(NULL) function in LPDS