rtc time in msec

Hello,

is it possible to get rtc time in msecond?

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There is a millisecond timer available (MS_TIMER), but the RTC does not provide time down to the millisecond.

--- In r..., "hongyang74" wrote:
>
> Hello,
>
> is it possible to get rtc time in msecond?
>

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I am not sure if this is still an issue (we are using 9.52). The MS_TIMER is a 32-bit timer and rolls over after 49 days. Make sure your use of MS_TIMER accounts for a possible rollover.

From: r... [mailto:r...] On Behalf Of seecwriter
Sent: Friday, June 28, 2013 9:22 AM
To: r...
Subject: [rabbit-semi] Re: rtc time in msec

There is a millisecond timer available (MS_TIMER), but the RTC does not provide time down to the millisecond.

--- In r..., "hongyang74" > wrote:
>
> Hello,
>
> is it possible to get rtc time in msecond?
> Start a New Thread

Thank you guys. However, MS_TIMER is not working as I expect. I want to record the error/warning/message happening time. That is reason why I need rtc time in msecond. It is much easy to transfer to remote PC as well.

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Do you really need it to ms accuracy?

If 1 second is good enough, you can encode the normal hours, minutes and
seconds to ms and send to your server. It's simple maths.

Dave.

From: r... [mailto:r...] On
Behalf Of hongyang74
Sent: 28 June 2013 23:09
To: r...
Subject: [rabbit-semi] Re: rtc time in msec

Thank you guys. However, MS_TIMER is not working as I expect. I want to
record the error/warning/message happening time. That is reason why I need
rtc time in msecond. It is much easy to transfer to remote PC as well.

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The RTC hardware counts ticks of the 32768Hz clocks, so the resolution is there. DynC may or may not pass all of that resolution on to the user. You can always read the RTC registers directly, but be careful to do it properly. Read the HW manual for details.
--- In r..., "hongyang74" wrote:
>
> Hello,
>
> is it possible to get rtc time in msecond?
>

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The Rabbit 2000 modules I used to use had a 48bit RTC chip. The RTC
routines simply ignore the lower order bits, but the information is there.
I needed to timestamp event information with ms accuracy, so I wrote my own
routines to read/write the RTC with ms accuracy. Sorry, I can't provide
the code, but it was pretty straightforward to write some assembler to do
this.

~Loren Start a New Thread