Altera_Forum
Honored Contributor
Honored Contributorsignaltap trigger delay
How do I add a simple delay after trigger in signaltap?
ie I want to wait for the trigger, wait 1000 more clocks, and then start the data capture.Forum Discussion
2 Replies
Altera_ForumWhenever I have had this sort of need, I've added a counter to the design. The simplest solution is to clear the counter on the initial trigger condition, and then use a simple trigger on the counter value.
Since the counter does not go anywhere, you need to add a synthesis constraint so that it does not get removed. For example, in VHDL ... --- Quote Start --- signal count : unsigned(15 downto 0); attribute noprune : boolean; attribute noprune of count : signal is true; --- Quote End --- Add the counter, synthesize your design, and then add count to your SignalTap II traces. Cheers, Dave- Altera_Forum
As with dave above, Ive always found it easier to put non-trivial triggering conditions into the code, rather than try and work out in signaltap.
