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INT RTCC & INT TIMER0

 
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mayur.k.vadukul



Joined: 07 Jul 2022
Posts: 8

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INT RTCC & INT TIMER0
PostPosted: Fri Aug 05, 2022 8:35 am     Reply with quote

Hi,

I am new to CCS and I have project that requires both TIMER0 & RTCC. In the CCS, both end up on same place when the interrupt occurs. How do I know whether the interrupt is due to TIMER0 or RTCC?

TIMER0 gives me my counters for various jobs, and RTCC is used for Alarm for real time.

Any Idea?
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MVadukul
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Fri Aug 05, 2022 10:38 am     Reply with quote

Timer0 and RTCC are two names for the same timer. RTCC is the older
name and Timer0 is the preferred name.

If you have more questions, post your PIC.
Ttelmah



Joined: 11 Mar 2010
Posts: 18226

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PostPosted: Sat Aug 06, 2022 3:43 am     Reply with quote

Normally the best way to get a genuine RTC, would be to add an external
RTC chip like a DS1307. It's pulse output can then be connected to the
external interrupt and gives you a genuine RTC.

The RTCC (real time clock counter), does not give you a real time clock
without a lot of extra software, and it is timer0. You cannot use both
at the same time.
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