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anybody know what is functions of timer2 interrupt?

 
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chemtastic23



Joined: 09 Dec 2010
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anybody know what is functions of timer2 interrupt?
PostPosted: Thu Dec 09, 2010 2:29 pm     Reply with quote
I'm new to this C. May I know what is functions of timer2 interrupt? What is the diff between timer1 and timer2 interrupt?
PCM programmer



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PostPosted: Thu Dec 09, 2010 2:33 pm     Reply with quote
This forum is not really about teaching basic PICs or basic C language.
You should use Google to search for Tutorial websites on these topics.
Here are a few tutorial pages that you can read to learn about PICs:

Timer2 tutorial:
http://www.microcontrollerboard.com/pic-timer2-tutorial.html

Newguy's timer tutorial:
http://www.ccsinfo.com/forum/viewtopic.php?t=22467

Microchip -- Timers Tutorial
http://ww1.microchip.com/downloads/en/DeviceDoc/51682A.pdf

Microchip -- Timers: Timer0 Tutorial (Part 2)
http://ww1.microchip.com/downloads/en/DeviceDoc/51702A.pdf
chemtastic23



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PostPosted: Thu Dec 09, 2010 2:41 pm     Reply with quote
is this correct?
Code:

#include <16f877a.h>
#use delay (clock = 2000000)
#fuses hs,nprotect,nowdt,nolvp

void main ()
{
enable_interrupts(int_timer2);
enable_interrupts(GLOBAL);
dbotkin



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PostPosted: Thu Dec 09, 2010 2:44 pm     Reply with quote
It's not completely correct... if you don't have case sensitivity disabled, it's INT_TIMER2 and not int_timer2. And fo course that code fragment is incomplete. But you have the general idea, yes.

Did a new semester just start somewhere?
chemtastic23



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PostPosted: Thu Dec 09, 2010 2:50 pm     Reply with quote
what I'm trying to do is I'm using this PIC16f877a
and I'm using the ccs c compiler

-PIC will continuously toggle LED at PORT RB1, RB2 and RB3 and toggle buzzer ON and OFF in seq every 1 sec. When interrupt occur all LED will automatically turn OFF and only turn ON LED RB4. (interrupt is timer2).
And after 2sec all sequence function back as normal .

My problem is I don't know how to use the timer2 interrupt. Sorry guys. I'm newbie
PCM programmer



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PostPosted: Thu Dec 09, 2010 2:55 pm     Reply with quote
Obviously you're the same person as fariq23 here, because you have
the same exact requirements, LED, Buzzer, 2 seconds:
http://www.ccsinfo.com/forum/viewtopic.php?t=44210
Please don't sign up under multiple names and post the same topic.
Keep one name, and ask for help with that name.
chemtastic23



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PostPosted: Thu Dec 09, 2010 2:56 pm     Reply with quote
no im not! he is my friends. we are in the same class. we got trouble of this interrupt things. im sorry
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