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Altera_Forum's avatar
Altera_Forum
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9 years ago

Qsys:Peripherals:Frequency_counter

There is a "Frequecy_Counter" IP in SOPC and Qsys, but there don't seem to be any instructions on how to use it. When I click on the "Datasheet" link for the IP, it brings me to the "ub_embedded_ip....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Follow up:

This appears to be just another half-baked marketing ploy by Altera. Even after you reverse-engineer their bloated device, you find that it is embarrassingly easy to lock-up. Just have one of the two input frequencies equal to zero and it enters a state where only a power-down will reset it (To understand why there needs to be 2 input frequencies, just consult the instructions. Ha!). Useless! But they get to put it in the list of "Features", just don't try to find the instructions on how to use it, or expect it to work with a very common input state without locking up.

So the reason that "...nobody on the planet has ever used this IP" is because it performs so poorly that it is better to just write your own. That's a couple of days of my time that I'll never get back. Maybe someday I'll learn better.