examples/gowin/demo.v

   1 module demo (
   2         input clk,
   3         input [3:0] sw,
   4         output [15:0] leds,
   5         output [7:0] seg7dig,
   6         output [3:0] seg7sel
   7 );
   8         localparam PRESCALE = 20;
   9         reg [PRESCALE+3:0] counter = 0;
  10         always @(posedge clk) counter <= counter + 1;
  11         assign leds = 1 << counter[PRESCALE +: 4];
  12 endmodule