Problem connecting NeuroSky Mindwave Mobile to Matlab

I am trying to connect the headset to Matlab but this error came up. I'm using Matlab R2015b on Windows 10 64bit OS. Can anyone help?

Error using loadlibrary
There was an error loading the library "C:\Users\user\Documents\MATLAB\Thinkgear.dll"
C:\Users\user\Documents\MATLAB\Thinkgear.dll is not a valid Win32 application.

Error in readRAWnew (line 26)
loadlibrary('Thinkgear.dll');

Caused by:
    Error using loaddefinedlibrary
    C:\Users\user\Documents\MATLAB\Thinkgear.dll is not a valid Win32 application.

The code that I used:

function readRAW
%run this function to connect and plot raw EEG data
%make sure to change portnum1 to the appropriate COM port

clear all
close all

data = zeros(1,256);    %preallocate buffer

portnum1 = 6;   %COM Port #
comPortName1 = sprintf('\\\\.\\COM%d', portnum1);

% Baud rate for use with TG_Connect() and TG_SetBaudrate().
TG_BAUD_57600 =      57600;

% Data format for use with TG_Connect() and TG_SetDataFormat().
TG_STREAM_PACKETS =     0;

% Data type that can be requested from TG_GetValue().
TG_DATA_RAW =         4;

%load thinkgear dll
loadlibrary('Thinkgear.dll');
fprintf('Thinkgear.dll loaded\n');

%get dll version
dllVersion = calllib('Thinkgear', 'TG_GetDriverVersion');
fprintf('ThinkGear DLL version: %d\n', dllVersion );

Get a connection ID handle to ThinkGear

connectionId1 = calllib('Thinkgear', 'TG_GetNewConnectionId');
if ( connectionId1 < 0 )
    error( sprintf( 'ERROR: TG_GetNewConnectionId() returned %d.\n', connectionId1 ) );
end;

% Set/open stream (raw bytes) log file for connection
errCode = calllib('Thinkgear', 'TG_SetStreamLog', connectionId1, 'streamLog.txt' );
if( errCode < 0 )
    error( sprintf( 'ERROR: TG_SetStreamLog() returned %d.\n', errCode ) );
end;

% Set/open data (ThinkGear values) log file for connection
errCode = calllib('Thinkgear', 'TG_SetDataLog', connectionId1, 'dataLog.txt' );
if( errCode < 0 )
    error( sprintf( 'ERROR: TG_SetDataLog() returned %d.\n', errCode ) );
end;

% Attempt to connect the connection ID handle to serial port "COM3"
errCode = calllib('Thinkgear', 'TG_Connect',  connectionId1,comPortName1,TG_BAUD_57600,TG_STREAM_PACKETS );
if ( errCode < 0 )
    error( sprintf( 'ERROR: TG_Connect() returned %d.\n', errCode ) );
end

fprintf( 'Connected.  Reading Packets...\n' );
%record data

j = 0;
i = 0;
while (i < 10240)   %loop for 20 seconds
    if (calllib('Thinkgear','TG_ReadPackets',connectionId1,1) == 1)   %if a packet was read...

          if (calllib('Thinkgear','TG_GetValueStatus',connectionId1,TG_DATA_RAW) ~= 0)   %if RAW has been updated 
              j = j + 1;
              i = i + 1;
              data(j) = calllib('Thinkgear','TG_GetValue',connectionId1,TG_DATA_RAW);
          end
      end

      if (j == 256)
          plotRAW(data);            %plot the data, update every .5 seconds (256 points)
          j = 0;
      end

end

%disconnect             
calllib('Thinkgear', 'TG_FreeConnection', connectionId1 );

Answer 1

[Walter Roberson]

You are trying to call a 32 bit driver from a 64 bit version of MATLAB. You will need to run the 32 bit version of MATLAB. (Even then, you might have additional problems due to compatibility problems that are present in Windows 10)

Note: R2015b will be the last 32 bit version of MATLAB.

[Syafiqah]

Thank you. I tested the code again with 32-bit MATLAB and the error doesn't come up but I get another error:

ERROR: TG_SetStreamLog() returned -2.

Your help is very much appreciated.

[Walter Roberson]

The file dataLog.txt could not be opened for writing.

[Looi Kelly]

hi, may i ask can i run the thinkgear driver using matlab 2009a 32bits? that is the only 32bits matlab i can find.

[Walter Roberson]

Looi Kelly: if you have a license for a newer version of MATLAB, then you can install the 32 bit version of that, up to and including R2015b. If you have an R2016a or R2016b license, you can still download R2015b.

Also it appears that http://store.neurosky.com/products/pc-developer-tools-4-0 probably supports 64 bit now.

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/277429-i-am-using-mindwave-mobile-have-problem-to-data-acquition-in-matlab?s_tid=srchtitle