Undefined function 'calibrate' for input arguments of type 'serial'.

I receive an error stating:

   "Undefined function 'calibrate' for input arguments of type 'serial'.

Error in iMeasureFIG>CalibratePush_Callback (line 55)
    handles.calCo = calibrate(handles.accelerometer.s);"

I'm trying to read in data from an accelerometer. I'm able to read the serial port, but when trying to calibrate I read out that error. Here is the entire code to further analyze..

function varargout = iMeasureFIG(varargin)

gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @iMeasureFIG_OpeningFcn, ...
                   'gui_OutputFcn',  @iMeasureFIG_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end

% ~~~~~~~~~ OPENING / OUTPUT FUNCTIONS ~~~~~~~~~ %
% --- Executes just before BW2 is made visible.
function iMeasureFIG_OpeningFcn(hObject, eventdata, handles, varargin)
setappdata(handles.text4, 'count', 0);
handles.flag = 0;

handles.output = hObject;
guidata(hObject, handles);

% --- Outputs from this function are returned to the command line.
function varargout = iMeasureFIG_OutputFcn(hObject, eventdata, handles) 

varargout{1} = handles.output;

% ~~~~~~~~~ SERIALPUSH READPUSH ~~~~~~~~~ %
function SerialPush_Callback(hObject, eventdata, handles)

handles.comPort = 'COM3'; % connect MATLAB to the accelerometer

if (~exist('serialFlag','var'))
    [handles.accelerometer.s,handles.serialFlag] = ...
        setupSerial(handles.comPort);
end

guidata(hObject, handles);

% ~~~~~~~~~ CALIBRATION ~~~~~~~~~ %
function CalibratePush_Callback(hObject, eventdata, handles)

if(~exist('handles.calCo', 'var'))
    handles.calCo = calibrate(handles.accelerometer.s);
end

guidata(hObject, handles);

% ~~~~~~~~~ Clears Serial ~~~~~~~~~ %
function ClosePush_Callback(hObject, eventdata, handles)
% hObject    handle to ClosePush (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
closeSerial

% ~~~~~~~~~ READS DATA ~~~~~~~~~ %
function ReadPush_Callback(hObject, eventdata, handles)
% hObject    handle to ReadPush (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%COMPORT

buf_len = 60;
% create the variables for all three original unfiltered axis and the resultant

handles.gxdata = zeros(buf_len,1);
handles.gydata = zeros(buf_len,1);
handles.gzdata = zeros(buf_len,1);
handles.rdata = zeros(buf_len,1);
% define the initial values of filt data by using alpha 
handles.gxFilt=0;
handles.gyFilt=0;
handles.gzFilt=0;
handles.rFilt=0;
% create the variables for all three filtered  axis and the resultant by
% using alpha filter

handles.gxFiltdata = zeros(buf_len,1);
handles.gyFiltdata = zeros(buf_len,1);
handles.gzFiltdata = zeros(buf_len,1);
handles.rFiltdata = zeros(buf_len,1);

handles.gxMovingFilt = 0;
handles.gyMovingFilt = 0;
handles.gzMovingFilt = 0;
handles.rMovingFilt = 0;

handles.gxMovingFiltdata = zeros(buf_len,1);
handles.gyMovingFiltdata = zeros(buf_len,1);
handles.gzMovingFiltdata = zeros(buf_len,1);
handles.rMovingFiltdata = zeros(buf_len,1);

handles.index = 1:buf_len;

handles.str = get(handles.ReadPush,'String'); % change the string of the button after a single click.
if strcmp(handles.str,'Read Data')
    set(handles.ReadPush,'String','Stop');
 else
    set(handles.ReadPush,'String','Read Data'); 
end

while strcmp(get(handles.ReadPush,'String'),'Stop')

      alpha=get(handles.alpha,'Value');% update the alpha value
      handles.windowSize=str2num(get(handles.movingAverage,'String'));% update the SMA value
      [handles.gx handles.gy handles.gz] = readAcc(handles.accelerometer, handles.calCo);% read and store the current original data of axes from the accelerometer
      handles.r = sqrt(handles.gx^2 +  handles.gy^2 + handles.gz^2);% calculate the magnitude of current original vetor

       handles.gxdata = [handles.gxdata(2:end) ; handles.gx]; 
       handles.gydata = [handles.gydata(2:end) ; handles.gy];
       handles.gzdata = [handles.gzdata(2:end) ; handles.gz];    
       handles.rdata= [handles.rdata(2:end);handles.r];
       set(handles.edit2,'String',alpha); % show the value of alpha in the edit 2 text which the alpha slider indicates

% If filtering is selected, this data will be graphed into plot 2
if get(handles.popupmenu3,'Value') == 1
    handles.gxFilt=(1-alpha)*handles.gxFilt+alpha*handles.gx;% calculate the fixed data by using alpha filter into matrix
    handles.gyFilt=(1-alpha)*handles.gyFilt+alpha*handles.gy;
    handles.gzFilt=(1-alpha)*handles.gzFilt+alpha*handles.gz;
    handles.rFilt=(1-alpha)*handles.rFilt+alpha*handles.r;

      handles.gxFiltdata=[handles.gxFiltdata(2:end);handles.gxFilt];%store the current fixed data by using alpha into the matrix
      handles.gyFiltdata=[handles.gyFiltdata(2:end);handles.gyFilt];
      handles.gzFiltdata=[handles.gzFiltdata(2:end);handles.gzFilt];
      handles.rFiltdata=[handles.rFiltdata(2:end);handles.rFilt];

      axes(handles.axes2)% plot the graph of using alpha filter
      plot(handles.index,handles.rFiltdata,'r'); 
      axis([1 buf_len -5 5]);
      xlabel('time');
      ylabel('Resultant');
      drawnow;

      set(handles.movingAverage,'String',handles.rFilt); % set the movingAverage edit text the same value as rFilt

      current_value = handles.rFilt;
      threshold = get( );

      if ( current_value > threshold && handles.flag == 0) %check the current data move from bottom to top -> we need to change the flag status.
          count = getappdata(handles.text4, 'count');
          count = count + 1;
          setappdata(handles.text4, 'count', count)
          set(handles.text4,'String',count);
          handles.flag=1;

      elseif( current_value < threshold && handles.flag == 1 )  % check the current data move from top to bottom -> we need to change the flag back to 0
          handles.flag=0;

      end;

      guidata(hObject, handles);
  end

% If moving average is selected, this data will be graphed into plot 2
if get(handles.popupmenu3,'Value') == 2
    handles.gxMovingFilt=mean(handles.gxdata(length(handles.gxdata):-1:length(handles.gxdata)-handles.windowSize+1));
    handles.gyMovingFilt=mean(handles.gydata(length(handles.gydata):-1:length(handles.gydata)-handles.windowSize+1));
    handles.gzMovingFilt=mean(handles.gzdata(length(handles.gzdata):-1:length(handles.gzdata)-handles.windowSize+1));
    handles.rMovingFilt=mean(handles.rdata(length(handles.rdata):-1:length(handles.rdata)-handles.windowSize+1));
    %calculate the  fixed data by using SMA filter into the matrix

      handles.gxMovingFiltdata=[handles.gxMovingFiltdata(2:end);handles.gxMovingFilt];%store the current fixed data by using SMA into the matrix
      handles.gyMovingFiltdata=[handles.gyMovingFiltdata(2:end);handles.gyMovingFilt];
      handles.gzMovingFiltdata=[handles.gzMovingFiltdata(2:end);handles.gzMovingFilt];
      handles.rMovingFiltdata=[handles.rMovingFiltdata(2:end);handles.rMovingFilt];

     %calculate the rMovingdata by taking the square root of the three axis of MovingFiltdata 
      rMovingFiltdata = sqrt((handles.gxMovingFiltdata).^2+(handles.gyMovingFiltdata).^2+(handles.gzMovingFiltdata).^2);
      % plot the rMovingFiltdata in axes2    
      axes(handles.axes2)
      plot(handles.index,handles.rMovingFiltdata,'r'); 
      axis([1 buf_len -5 5]); 
      xlabel('time');
      ylabel('Resultant');
      drawnow;

      guidata(hObject, handles);
  end

% If no filtering or moving average is selected, this data will be graphed into plot 2
if get(handles.popupmenu3,'Value') == 3

      handles.gxdata = [handles.gxdata(2:end) ; handles.gx];
      handles.gydata = [handles.gydata(2:end) ; handles.gy];
      handles.gzdata = [handles.gzdata(2:end) ; handles.gz];
      handles.rdata = [handles.rdata(2:end) ; handles.r];

      handles.rdata = sqrt((handles.gxdata).^2+(handles.gydata).^2+(handles.gzdata).^2);

       % plot the original rdata    
      axes(handles.axes2)
      plot(handles.index,handles.rdata,'r'); 
      axis([1 buf_len -5 5]); 
      xlabel('time');
      ylabel('Resultant');
      drawnow;

      guidata(hObject, handles);
  end 

      handles.gxdata = [handles.gxdata(2:end) ; handles.gx];
      handles.gydata = [handles.gydata(2:end) ; handles.gy];
      handles.gzdata = [handles.gzdata(2:end) ; handles.gz];
      handles.rdata = [handles.rdata(2:end) ; handles.r];

      axes(handles.axes1)
      plot(handles.index,handles.gxdata,'r', handles.index,handles.gydata,'g', handles.index,handles.gzdata,'b');
      axis([1 buf_len -5 5]);  
      xlabel('time');
      ylabel('X, Y, Z');
      drawnow;

      guidata(hObject, handles);
  end

% --- Executes on slider movement.
function alpha_Callback(hObject, eventdata, handles)
% hObject    handle to alpha (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% set(handles.slidevalue,'String',num2str(get(handles.alpha,'Value')));

% Hints: get(hObject,'Value') returns position of slider
%        get(hObject,'Min') and get(hObject,'Max') to determine range of slider

% --- Executes during object creation, after setting all properties.
function alpha_CreateFcn(hObject, eventdata, handles)
% hObject    handle to alpha (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor',[.9 .9 .9]);
end

function movingAverage_Callback(hObject, eventdata, handles)
% hObject    handle to movingAverage (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of movingAverage as text
%        str2double(get(hObject,'String')) returns contents of movingAverage as a double

% --- Executes during object creation, after setting all properties.
function movingAverage_CreateFcn(hObject, eventdata, handles)
% hObject    handle to movingAverage (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function edit2_Callback(hObject, eventdata, handles)
% hObject    handle to edit2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit2 as text
%        str2double(get(hObject,'String')) returns contents of edit2 as a double

% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

% --- Executes on selection change in popupmenu3.
function popupmenu3_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = cellstr(get(hObject,'String')) returns popupmenu3 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu3

% --- Executes during object creation, after setting all properties.
function popupmenu3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

[Amed]

Any ideas? The problem is towards the top, though i'd just copy the entire code here. It goes thru the SERIAL but won't CALIBRATE without getting that error. Thanks

[Amed]

Now i'm receiving the error...

Attempt to execute SCRIPT setupSerial as a function:
C:\Users\Owner\Desktop\MATLABCODE\setupSerial.m

Error in iMeasureFIG>SerialPush_Callback (line 45)
    [handles.accelerometer.s,handles.serialFlag] = ...

while trying to run the Serial.. I can't even run the serial now. I didn't change a thing to the code..?

[Amed]

Anybody have a clue?