Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Interval Timer Problem

Hi, I got a system with an interval timer. Now I want to use it to to count how long the time is between two positiv flanks. But the counter won't start. My code: int count_timeH=0...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Although I'm not sure I understand what your problem exactly is, I advance two hypothesis:

1.

You must debounce the button contact which is possibly generating fake signal commutations.

2.

The measured interval is longer than the timer period, then the timer overflows and you get a shorter estimated time.

What's your system frequency and what's the timer period?

If you want to use the timer only in this free running way, you should program the period to the highest value, namely 0xffff ffff