another technique for tampering microcontrollers Real time Data plot from serial port

Real time Data plot from serial port

It plots real time data from serial port. It can use for any serial port device.

%%real time data plot from a serial port 
% This matlab script is for ploting a graph by accessing serial port data in
% real time. Change the com values and all variable values accroding to
% your requirements. Dont forget to add terminator in to your serial device program.
% This script can be modified to be used on any platform by changing the
% serialPort variable. 
% Author: Moidu thavot.

%%Clear all variables

clear all;
%%Variables (Edit yourself)

SerialPort='com6'; %serial port
MaxDeviation = 3;%Maximum Allowable Change from one value to next 
TimeInterval=0.2;%time interval between each input.
loop=120;%count values
%%Set up the serial port object

s = serial(SerialPort)
fopen(s);



time =now;
voltage = 0;
%% Set up the figure 
figureHandle = figure('NumberTitle','off',...
    'Name','Voltage Characteristics',...
    'Color',[0 0 0],'Visible','off');

% Set axes
axesHandle = axes('Parent',figureHandle,...
    'YGrid','on',...
    'YColor',[0.9725 0.9725 0.9725],...
    'XGrid','on',...
    'XColor',[0.9725 0.9725 0.9725],...
    'Color',[0 0 0]);

hold on;

plotHandle = plot(axesHandle,time,voltage,'Marker','.','LineWidth',1,'Color',[0 1 0]);

xlim(axesHandle,[min(time) max(time+0.001)]);

% Create xlabel
xlabel('Time','FontWeight','bold','FontSize',14,'Color',[1 1 0]);

% Create ylabel
ylabel('Voltage in V','FontWeight','bold','FontSize',14,'Color',[1 1 0]);

% Create title
title('Real Time Data','FontSize',15,'Color',[1 1 0]);




%% Initializing variables

voltage(1)=0;
time(1)=0;
count = 2;
k=1;
while ~isequal(count,loop)
   
    %%Re creating Serial port before timeout
    
    k=k+1;  
    if k==25
        fclose(s);
delete(s);
clear s;        
s = serial('com6');
fopen(s)
k=0;
    end
    
    %%Serial data accessing 
    
     voltage(count) = fscanf(s,'%f');
     
     %%For reducing Error Use your own costant
     
     voltage(1)=0;     
     if (voltage(count)-voltage(count-1)>MaxDeviation)
         voltage(count)=voltage(count-1);
     end
     
     time(count) = count;
    set(plotHandle,'YData',voltage,'XData',time);
    set(figureHandle,'Visible','on');
    datetick('x','mm/DD HH:MM');
    
    pause(TimeInterval);
    count = count +1;
end



%% Clean up the serial port
fclose(s);
delete(s);
clear s;

https://www.mathworks.com/matlabcentral/fileexchange/28941-real-time-data-plot-from-serial-port?focused=5166995&tab=function