30. PWM with 4-bit Resolution

How do you plan to solve it?

/*Write your code here*/
module pwm4_basic(input clk,rst, input [3:0]duty, output reg pwm_out);
  reg [3:0]cnt;
  always @(posedge clk)
    begin
      /*
       cnt <= rst ? 4'b0 : ((cnt==4'b1111)?4'b0:(cnt+1'b1));
       pwm_out <= rst ? 1'b0 : ((cnt<duty)?1'b1:1'b0);
      */

      cnt     <= rst ? 4'b0 : (cnt+4'b1);
      pwm_out <= rst ? 1'b0 : (cnt < duty);
    end
endmodule