aboutsummaryrefslogtreecommitdiffstats
path: root/machxo2/examples/rgbcount.v
blob: bf5c75185f9b0300c5d384ee164bf6508baf5562 (plain)
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
32
33
// Modified from:
// https://github.com/tinyfpga/TinyFPGA-A-Series/tree/master/template_a2
// https://tinyfpga.com/a-series-guide.html used as a basis.

module top (
  (* LOC="21" *)
  inout pin6,
  (* LOC="26" *)
  inout pin9_jtgnb,
  (* LOC="27" *)
  inout pin10_sda,
);
  wire clk;

  OSCH #(
    .NOM_FREQ("2.08")
  ) internal_oscillator_inst (
    .STDBY(1'b0),
    .OSC(clk)
  );

  reg [23:0] led_timer;

  always @(posedge clk) begin
    led_timer <= led_timer + 1;
  end

  // left side of board
  assign pin9_jtgnb = led_timer[23];
  assign pin10_sda = led_timer[22];
  assign pin6 = led_timer[21];

endmodule