How to implement function of "gettimeofday()" in SYSBIOS?

Bin Hu

Other Parts Discussed in Thread: SYSBIOS

Hi all,

Now I am move one of function block from linux platform to SYSBIOS? Target processor is Sitara AM335x.

In Linux , the "gettimeofday" returns the second and microsecond since the system powerup.But the min return of the RTC on the chip is second only. How can we get the more presice time like micro second in SYSBIOS?

If we dont have this kind of function in SYSBIOS, Could you give some suggestion of how to implement a user funciton to achieve this target?

Thank you!

over 12 years ago

0 Alan DeMars over 12 years ago

TI__Mastermind 30830 points

You might consider using Timestamp_get64().

It will return a 64 bit count of the number of CPU cycles since the system started up.

If you know the CPU clock frequency, you can convert this number into microseconds pretty easily.

Alan

0 HT Cheng over 9 years ago in reply to Alan DeMars

Intellectual 350 points

Could you kindly provide a sample example of the data conversion? Thanks!

0 Kenia Guinto over 9 years ago in reply to HT Cheng

TI__Expert 7250 points

Hi HT,
We generally discourage posting a new question to an old closed thread because the person who answered before may no longer be available, and also it will allow whomever is currently assigned to monitor the forum to respond to you more quickly. For these reasons, I suggest you start a new thread with your question and reference this thread.

Thank you

0 HT Cheng over 9 years ago in reply to Kenia Guinto

Intellectual 350 points

Thanks for the suggestion.

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How to implement function of "gettimeofday()" in SYSBIOS?