30. PWM with 4-bit Resolution

How do you plan to solve it?

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

    else begin
        pwm_out<=(cnt < duty);
        cnt<=cnt +1;
    end 

end
endmodule