How to use timers

yohis960 · Joined: 17 Sep 2011 Posts: 2

Well this is the first time I wanna use them. The thing is that I wanna do something every hour in the pic...so every hour it has to stop and do another thing for instance light on a led and then do that again one hour after. Is there a way to do it using timers or do I have to use a counter or something like that ?
Thank you so much for the help! (And btw my english is not that good so I hope I made my point ;)

Gabriel · Joined: 03 Aug 2009 Posts: 1067 Location: Panama

hi,

Look at the compiler help section, search for set up timer
or search here in the forum how to set up a timer.

No timer will *time* for an hour... thats too long. However
you can set up a time for 0.5 Seconds (for example).

And then count how many times it overflows. When it overflows 7200(3600 seconds) times... an hour has passed.

You can set the PIC to sleep in between timer overflows and save power!

Hope that helps.

G
_________________
CCS PCM 5.078 & CCS PCH 5.093

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

This post has links to several tutorials. At least 4 of them are about
PIC timers:
http://www.ccsinfo.com/forum/viewtopic.php?t=46384&start=3

This thread shows how to use a timer to make a delay of several seconds:
http://www.ccsinfo.com/forum/viewtopic.php?t=46125

This thread shows how to put the PIC to sleep for several seconds, with
Timer1 using an external 32.768 KHz Watch crystal (and capacitors).
http://www.ccsinfo.com/forum/viewtopic.php?t=45458