Re: [ECOS] clock_settime() help

[Sam Pham <anhmn at yahoo dot com>]

Thanks for your response.  I've found the bug in my SW
that causes clock_settime() to fail at times.  I
didn't normalize the nanosecond field before calling
this function (e.g. if number of nanoseconds >
1000000000, then I need to increment number of seconds
by 1 and decrement number of nanoseconds by
1000000000).


--- sandeep <shimple0@yahoo.com> wrote:

> Sam Pham wrote:
> 
> >>clock to the current time.  At first, I called
> >>clock_settime() inside my ISR, and then outside of
> >>this ISR, I called clock_gettime() to verify if
> the
> >>current time was set.  I noticed that sometimes
> >>clock_settime() failed because clock_gettime()
> >>returned a non-current time value.  So I decided
> to
> >>call clock_settime() in a thread with all
> interrupts
> >>disabled by calling function
> >>cyg_interrupt_disable(). 
> >>However, I still observed the same failure as
> >>before.
> 
> some very dumb questions -
> 
> - what do you mean by that clock_settime failed??
> - when you say "clock_gettime()returned a
> non-current time value", you mean it 
> returned a value lesser or more than current time?
> - how do you find current time? is your order
>    clock_gettime
>    get current time
>    compare them
> OR
>    get current time
>    clock_gettime
>    compare them
> 
> - if above are your steps, have you tried doing
> these under disabled interrupts 
> and found same results? i am not talking of
> clock_settime with disabled 
> interrupts, here.
> 
> sandeep
> 
> 
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> 
> 


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