Forum Discussion

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

using clock

Hi! I'm a beginner with my DE2-115 and vhdl programations. I'm trying to do a simple logic: make a led blink. To do this, I'm working with clock. But, I'm with some problems, because the led doe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

That code makes clkout go low for a single clk period out of 50000000, so you can't see the 20ns-long blink (assuming a 50MHz clk)

You should change the inner if in this way:

if(cnt=25000000)then

cnt:=0;

clkout<= NOT clkout;

else

cnt := cnt+1;

end if;