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Altera_Forum's avatar
Altera_Forum
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14 years ago

Using internal Clock of DE2 in Quartus-Verilog

Hi there, I'm very new to verilog and quartus, but I'm trying to build a digital clock. I've set up the counters (I think) for seconds minutes and hours. But what I am unsure about is how ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I'm by no mean an expert, but I think I can help with some things...

1. To access the clock, just declare a input pin named CLOCK_50.

i.e.: CLOCK_50: IN STD_LOGIC;

2. If you want to increment a variable every second, you need a 1hz clock, not 1KHz. A simple but not efficient way to do that is to count every clock until 50.000.000. At this you will have one second. Don't forget to zero your counter.

3. You must set the FPGA pins attached to the oscilator. You can just import the DE2_pin_assignments.csv, available on the DE2 disc. To do so, go on "Assignments - Import Assignments" .

If I said something wrong, please someone correct me.

Hope I can help.