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]count;
 always@(posedge clk)begin
    if(rst)begin
        pwm_out <= 0;
        count <= 0;
    end
    else begin
        count <= count + 1;
        if(count < duty)begin
            pwm_out <= 1'b1;
        end
        else 
          pwm_out <= 1'b0;
    end
 end

endmodule