clkdiv.v


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

module clkdiv (
    input rst_i,
    input clk,              // clk input
    output o_divclk
);

reg [23:0] counter;

always @(posedge clk or negedge rst_i) begin
    if (!rst_i)
        counter <= 24'd0;
//    else if (counter < 24'd1349_9999)       // 0.5s delay
    else if (counter < 24'd674_9999)       // 0.5s delay
        counter <= counter + 1'b1;
    else
        counter <= 24'd0;
end

always @(posedge clk or negedge rst_i) begin
    if (!rst_i)
        o_divclk <= 1'b0;
//    else if (counter == 24'd1349_9999)       // 0.5s delay
    else if (counter == 24'd674_9999)       // 0.5s delay
        o_divclk[0] <= o_divclk[0] + 1;
    else
        o_divclk <= o_divclk;
end


endmodule