.NET library problem

Hello all.

I am trying to add the Cypress USB library CyUSB.dll to Matlab and use a script to:

1. connect to the usb device 2. get data 3. live plot and save to text file.

Here is what I have so far:

%%Load .NET Assembly
try 
   CyUSBdll = NET.addAssembly('C:\Users\Aobo-Locata\Desktop\adfa stuff\CyUSB.dll');
catch error
   error.message
   if(isa(error,'NET.NetException'))
       e.ExceptionObject
   else
       disp('CyUSB.dll already loaded');
       return;
   end
end

%%USB Device Select
% Create a list of USB devices
usbDevices = CyUSB.USBDeviceList(CyUSB.CyConst.DEVICES_CYUSB);
% Number of devices
num_Devices = usbDevices.Count

%myUSBDevice = usbDevices.Item(VID,PID)
%myUSBDevice = usbDevices.Item(0)

So num_Devices returned 1, showing that it indeed found 1 device.

However, using any of the Item methods above crashes Matlab instantly. Interesting if I feed in bogus parameters (like Item(2)), myUSBDevice returns as []

This is the programmer guide... http://www.cypress.com/?docID=45233

I thought it might be because usbDevices is a list of CyUSB.USBDevice which is an abstract class, however I tried to cast it and it didn't work either:

%myUSBDevice = CyUSB.CyUSBDevice(usbDevices.Item(0))

It complained about how it can't find CyUSBDevice type.. grrr.

Could someone please have a look at the CyUSB.NET library and help me out? I have spent days on this already, totally out of ideas. Thanks so much!

Answer 1

[zi]

Hi,

I am trying to use Matlab to access CY7C68013, but haven't got any idea yet...I think you have done similar task...could you share something with me...?

Thanks

Answer 2

[Junbin Zhang]

I have met the same problem. The Cypress community has no solutions.

Answer 3

[vishwas dalal]

Hello,

Just wondering if you have this code working now? I am able to get the device into matlb, but do not know what to do to stream data into matlab.

regards