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Software => Software => Topic started by: mbateman on October 21, 2008, 05:32:54 PM

Title: Timer Overflow Interrupt not working
Post by: mbateman on October 21, 2008, 05:32:54 PM

I think I must be missing something obvious. I am trying to use timer5 on the Axon. The timer itself is acting as expected, but I can't seem to get the overflow interrupt to work.

To test, I just did a very simple case...

Code: [Select]

ISR(TIMER5_OVF_vect) {
rprintf("Overflow!!!\r\n");
}
I do have external overflows working just fine, so I know global interrupts are enabled. Is there somewhere that I need to enable the timer5 overflow interrupt?

Title: Re: Timer Overflow Interrupt not working
Post by: bens on October 21, 2008, 05:47:08 PM

I assume you'll need to use one of the timer 5 control registers (probably something like TIMSK5) to enable timer 5 overflow interrupts.  Take a look at the datasheet.

- Ben

Title: Re: Timer Overflow Interrupt not working
Post by: mbateman on October 21, 2008, 06:38:13 PM

Doh! I knew it was something simple. I poured over so many registers in the datasheet, but somehow missed that one.

Thanks!!!!

-- matt