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25 lines
604 B
25 lines
604 B
module zutils_debug_led #(
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parameter PERIOD_COUNT = 1000000
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) (
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input clk, //clock input
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input rst_n, //asynchronous reset input, low active
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output reg debug_led
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);
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reg [31:0] counter = 0;
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always @(posedge clk or negedge rst_n) begin
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if (!rst_n) begin
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counter <= 0;
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debug_led <= 1'b0;
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end else begin
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if (counter == PERIOD_COUNT - 1) begin
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counter <= 0;
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debug_led <= ~debug_led;
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end else begin
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counter <= counter + 1;
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end
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end
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end
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endmodule
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