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JMccu10's avatar
JMccu10
Icon for New Contributor rankNew Contributor
6 years ago
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Hello, Why are unused LEDs dimly lit but the rest of the FPGA is working as expected? What is the best way to ensure all unused LEDs are off? Thank you, Jeremy

The code is working fine except that LEDs [9:1] are dimly lit.

I am using the free software - Quartus Prime Lite 18.1 and the ModelSim.

module Mux_4_to_1 (Mux_Out, Sel, Mux_In);

input [1:0] Sel;

input [3:0] Mux_In;

output Mux_Out;

reg Mux_Out = 1'b0;

always @(*)

case (Sel)

2'b00: Mux_Out = Mux_In[0];

2'b01: Mux_Out = Mux_In[1];

2'b10: Mux_Out = Mux_In[2];

2'b11: Mux_Out = Mux_In[3];

default: Mux_Out = Mux_In[0];

endcase

endmodule

  • KhaiChein_Y_Intel's avatar
    KhaiChein_Y_Intel
    6 years ago

    Hi,

    You have to solder the JP5 2-pin header only if you are using the dual image boot function on the DE10-Lite board

    Thanks.

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  • JMccu10's avatar
    JMccu10
    Icon for New Contributor rankNew Contributor
    6 years ago

    Hello YY,

    No, I haven't made any headway with the LED issue yet. My work-around is to have all 10 LEDs defined as output and then tie the to the state of one the toggle switches. That way they are either full on or full off. This covers up my issue with unused LEDs dimly lit because they are all used now.

    Thank you for checking back in. I've haven't been able to spend the time to troubleshoot this due to college and work schedules but I will hopefully have more time soon.

    Also, is it true that I need to solder a jumper wire on JP5 to load a BIT file into the flash RAM? I'm surprised a jumper (or posts) isn't already installed.

    DE10-Lite

    Thank you,

    Jeremy

  • KhaiChein_Y_Intel's avatar
    KhaiChein_Y_Intel
    Icon for Regular Contributor rankRegular Contributor
    6 years ago

    Hi,

    You have to solder the JP5 2-pin header only if you are using the dual image boot function on the DE10-Lite board

    Thanks.

    • JMccu10's avatar
      JMccu10
      Icon for New Contributor rankNew Contributor
      6 years ago

      Thank you. I am able to load the flash now.

      Jeremy