Push Button with uicontrol to run figure again

Hi,

I'm trying to add push buttons to my figure. The first is to clear my figure and the second is to run it again. I already git the clear button but struggeling the program the start button.

My program got a rectime of 10 sec. and is live plotting my acceleration with im getting from a sensor. Can someone help me and sorry for my english I'm a native speaker

This is my Code

if true
clear all;
close all;

samplerate = 10; %Hz samples = 100; rectime = samples/samplerate;

% Find a serial port object. obj1 = instrfind('Type', 'serial', 'Port', 'COM3', 'Tag', '');

% Create the serial port object if it does not exist % otherwise use the object that was found. if isempty(obj1) obj1 = serial('COM3'); else fclose(obj1); obj1 = obj1(1); end

% Connect to instrument object, obj1. fopen(obj1);

% Configure instrument object, obj1. set(obj1, 'BaudRate', 115200); set(obj1, 'Terminator', {'LF','LF/CR'});

% Communicating with instrument object, obj1. i=0;

data={};

 %uicontrol('Style','pushbutton','String','Start','Callback','uiresume(gcbf)');  
btn = uicontrol('Style', 'pushbutton', 'String', 'Clear',...
        'Position', [20 20 50 20],...
        'Callback', 'cla');
btn = uicontrol('Style', 'pushbutton', 'String', 'Start',...
        'Position', [20 0 50 20],...
        'Callback', '');
 subplot(1,1,1)
 title('Acc X')

while (i <7)

    fscanf(obj1,'%c');

    i = i+1;
end

x_co = 1; t = x_co-1;

while (i < 108)

    gyr_box = fscanf(obj1,'%c');
    gyr_box_array = strsplit(gyr_box,',');
    acc_box = fscanf(obj1,'%c');
    acc_box_array = strsplit(acc_box,',');

% ax_c = acc_box_array(2); % ax(x_co) = str2double(ax_c); % ay_c = acc_box_array(3); % ay(x_co) = str2double(ay_c); % az_c = acc_box_array(4); % az(x_co) = str2double(az_c); % gx_c = gyr_box_array(2); % gx(x_co) = str2double(gx_c); % gy_c = gyr_box_array(3); % gy(x_co) = str2double(gy_c); % gz_c = gyr_box_array(4); % gz(x_co) = str2double(gz_c);

    ax(x_co) = (str2double(acc_box_array(2))/8192)*9.81;

    %figure
    drawnow;
    subplot(1,1,1)
    plot(ax,'r')
    title('Acc X')
    xlabel('Zeit')
    ylabel('Beschleuigung')

    data = [data;{acc_box}];
    data = [data;{gyr_box}];
%data=[data;{fscanf(obj1,'%c')}];

i=i+1; x_co = x_co+1; t = [t (x_co-1)/10]; end

while (i < samples)

    gyr_box = fscanf(obj1,'%c');
    gyr_box_array = strsplit(gyr_box,',');
    acc_box = fscanf(obj1,'%c');
    acc_box_array = strsplit(acc_box,',');

% ax_c = acc_box_array(2); % ax(x_co) = str2double(ax_c); % ay_c = acc_box_array(3); % ay(x_co) = str2double(ay_c); % az_c = acc_box_array(4); % az(x_co) = str2double(az_c); % gx_c = gyr_box_array(2); % gx(x_co) = str2double(gx_c); % gy_c = gyr_box_array(3); % gy(x_co) = str2double(gy_c); % gz_c = gyr_box_array(4); % gz(x_co) = str2double(gz_c); %

    ax(x_co) = (str2double(acc_box_array(2))/8192)*9.81;

    %figure
    drawnow;
    subplot(1,1,1)
    plot(ax(length(ax)-100:1:length(ax)),'r')
    title('Acc X')
    xlabel('Zeit')
    ylabel('Beschleuigung')

    data = [data;{acc_box}];
    data = [data;{gyr_box}];
%data=[data;{fscanf(obj1,'%c')}];

i=i+1; x_co = x_co+1; t=[t (x_co-1)/10]; end

save data;

fclose(obj1); % code end