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
        count<=4'd0;
        pwm_out<=1'b0;
    end
    else
    begin
    count<=count+4'd1;
   pwm_out<=(count<duty);
end
end
endmodule