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]count;
always @(posedge clk)begin

if(rst)begin
    count<=4'b0;
    pwm_out<=1'b0;
end
else begin
count<=count+4'b1;
if(count<duty)
pwm_out=1'b1;
else
pwm_out<=1'b0;
end
end
endmodule