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32 lines
533 B
32 lines
533 B
module demo_top(
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input clk_12,
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input [3:0] btn,
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input [7:0] dip_sw,
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output [11:0] led
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);
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reg [11:0] ctr_scroll = 1'b1;
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reg clk_div = 0;
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localparam DIV = 20;
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reg [DIV-1:0] div_ctr = 0;
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always @(posedge clk) begin
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{clk_div, div_ctr} <= div_ctr + 1'b1;
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if (clk_div) begin
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if (!(|ctr_scroll))
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ctr_scroll <= 1'b1;
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else
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ctr_scroll <= {ctr_scroll[10:0], ctr_scroll[11]};
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end
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end
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led_ctrl led_ctrl_i (
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.clk(clk_12),
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.led_in_yr({dip_sw, btn}),
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.led_in_bg(ctr_scroll),
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.led_pin(led)
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);
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endmodule |