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Chamathka's avatar
Chamathka
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4 years ago

FPGA

I am a beginner in FPGA programming. I wanted to blink LED on my FPGA board. Code compilation was done successfully. So, I programmed it on my DE0- Nano Altera FPGA board. But I could not see the LED...
Chamathka's avatar
Chamathka
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4 years ago

module LED_blink(clk,outp);
input clk;
output reg outp=0;

reg [25:0] count=0;

always@(posedge clk)
begin
if(count<25000000) // blink 1 sec as clk freq is 50MHz
begin
count<=count+1;
end
else
begin
count<=0;
outp<=outp;
end
end
endmodule

sstrell's avatar
sstrell
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4 years ago

You're never changing the value of outp. It's always 0.

  • Chamathka's avatar
    Chamathka
    Icon for New Contributor rankNew Contributor
    4 years ago

    I didn't change the output value. That is 0.. Can you help me with this to generate a pulse

    • sstrell's avatar
      sstrell
      Icon for Super Contributor rankSuper Contributor
      4 years ago

      You have to say outp <= ~outp.

      • Chamathka's avatar
        Chamathka
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        4 years ago

        Thank you very much.