Serial port 8bit data read

Hi. I am trying to read the 8 bit data that I send from basys 3 from the usb port of my pc. Looking at the simulation results of vivado the signal that I give to usb port is correct. But when I try to read it from matlab the numbers become meaningless. I also use anouther program to read the data from usb port. The results of that program is nearly same with the results of matlab but there are some differences. Do anyone has any suggestions?This is the vivado simulation. The value that I am trying to send is buff_in. clk_boud is boud rate which is 115200. And txserialout is the output port.

THE MATLAB CODE

obj1 = instrfind('Type', 'serial', 'Port', 'COM13');

% Create the serial port object if it does not exist

% otherwise use the object that was found.

if isempty(obj1)

obj1 = serial('COM13','BaudRate',115200,'StopBits',1,'ByteOrder','littleEndian');

else

fclose(obj1);

obj1 = obj1(1)

end

set(obj1,'InputBufferSize', 21);

fopen(obj1);

obj1.Timeout = 5;

data1 = fread(obj1)

% Disconnect from instrument object, obj1.

fclose(obj1);

% Clean up all objects.

delete(obj1);

RESULT OF THE MATLAB CODE

>> serialtx

data1 = 180 6 49 167 182 6 51 14 176 102 53 215 176 70 180 6 49 167 182 6 51