Long Interrupt

gtx15 · Joined: 19 May 2018 Posts: 27

Trying to find a easy way to create a @ 1 minute interrupt. Must I use multiple shorter interrupts and count them?
Thank You.

jeremiah · Joined: 20 Jul 2010 Posts: 1346

You could use combination of a slow (like 32kHz) secondary oscillator for one of your timers and also use a clock divider in the setup.

or you can use an real time clock and set an alarm interrupt.

I'm sure there are other options. A lot depends on your PIC and you haven't really given much information.

temtronic · Posted: Sun Feb 16, 2020 6:57 am

Have a look at the code here...

http://www.ccsinfo.com/forum/viewtopic.php?t=26177

It's a timer based RTC. You can easily modify to have the ISR set a 'one_minute_flag' that main() would read.

There are dozens of ways to accomplish what you want, but you should post which PIC you're using. Not all PICs have all internal peripherals !

Jay