24 lines
521 B
Verilog
24 lines
521 B
Verilog
module debounce_switch(
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input clk,
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input i_switch,
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output o_switch);
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parameter c_debounce_limit=250000;// 10ms at 25MHz
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reg r_state=1'b0;
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reg [17:0] r_count = 0;
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always@(posedge clk)begin
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if (i_switch != r_state && r_count < c_debounce_limit)
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r_count <= r_count +1; //counter
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else if (r_count == c_debounce_limit)begin
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r_count <=0;
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r_state <= i_switch;
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end
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else
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r_count<=0;
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end
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assign o_switch=r_state;
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endmodule |