30. PWM with 4-bit Resolution

How do you plan to solve it?

/*Write your code here*/
module pwm4_basic(input  clk , input  rst , input  [3:0] duty, output reg pwm_out);


reg [3:0] counter;

always @(posedge clk) begin 


    if(rst) begin

        counter    <= 4'b0;
        pwm_out <= 1'b0;

    end

    else begin

        if(counter < duty) begin 

            pwm_out <= 1'b1;


        end

        else begin

            pwm_out <= 1'b0;


        end

        counter <= counter + 4'b1;

    end




end


endmodule