Problem in Interfacing MindWave- NeuroSky

After interfacing the mindwave mobile the following error is generated:

Error using loadlibrary
No supported compiler or SDK was found. You can install the freely available MinGW-w64 C/C++ compiler; see Install
MinGW-w64 Compiler. For more options, visit http://www.mathworks.com/support/compilers/win64/R2016a.html.

Error in loadlibrary

Error in readRAW (line 26)
loadlibrary('thinkgear.dll','thinkgear.h');

Inspite of downloading the MinGW-w64 Compiler. The same error appears. Kindly provide your assistance.

[Walter Roberson]

What steps did you use to install MinGW ?

If you use

mex -setup C++

then are you able to see MinGW there?

[Prajna Upadhyaya]

Inspite of having 64 bit Operating system and MATLAB of version 64. The following error is generated, Error in readRAW (line 26) loadlibrary('thinkgear.dll','thinkgear.h');

Caused by: Error using loaddefinedlibrary E:\new neurology\eye blink 3\Debug\thinkgear.dll is not a valid Win32 application.

[Walter Roberson]

thinkgear.dll appears to be 32 bit only.

[Ajna Ram]

I have the same issue. Did you find the solution?

[Walter Roberson]

There is a potential 64 bit version of the DLL at https://github.com/webdesigniran/MindWaveReader/tree/master/MindWaveReaderWPF

Answer 1

[Aylin]

As Walter mentioned, it is not possible to load a 32-bit shared library (DLL) into a 64-bit version of MATLAB using the loadlibrary command.

MATLAB R2015b was the last MATLAB release which had a 32-bit version. Therefore, you should install a 32-bit MATLAB which is R2015b or older.

After doing this, you might not need to install a new 32-bit compatible compiler since 32-bit MATLAB versions usually have the 'lcc-win32' compiler installed by default. See the 'supported compilers' page corresponding to your MATLAB release for more information about this:

https://www.mathworks.com/support/sysreq/previous_releases.html

Please note that loadlibrary has a few different limitations for importing C DLLs into MATLAB:

https://www.mathworks.com/help/matlab/matlab_external/limitations-to-shared-library-support.html

The above link can help verify if your header file and DLL is compatible with MATLAB's loadlibrary function.

[Prajna Upadhyaya]

After running it with respect to 32 bit matlab the following error was found:

thinkgear.dll loaded ThinkGear DLL version: 21 Error using calllib Library was not found

Error in readRAW (line 36) connectionId1 = calllib('thinkgear64', 'TG_GetNewConnectionId');

[Walter Roberson]

Odd that the same source code would call upon thinkgear.dll and thinkgear64.dll

Answer 2

[Suha Ali]

can I ask you a question :( is NeuroSky MindWave codes of reading measured signals (like Alpha waves) are different from that of the NeuroSky MindWave Mobile??? it would be a geat help if someone answers! thank you in advance!

[Walter Roberson]

I think so, except for the difference between USB (original MindWave) or BlueTooth (Mobile).

I am going here based upon https://store.neurosky.com/pages/faq

Both our MindWave and MindWave Mobile headsets utilize the same hardware and read the same EEG signals. The MindWave headset will require a computer with a USB port to plug in the included RF receiver. On the other hand, our MindWave Mobile headset utilizes Bluetooth for connectivity. This feature will allow the headset to connect directly to your Bluetooth enabled computer, phone or tablet running Windows, Android or iOS.

[Suha Ali]

Thank you so much for replying!! ;( So since there is the Bluetooth and cable difference, this mean the code required to read the signals is different?

[Walter Roberson]

I do not know? Possibly. I have not seen their code.

[Suha Ali]

@Walter Roberson, Thank You So Much For Replying!