.mdd driver-wrapper: java.lang.​ClassCastE​xception: java.lang.Double cannot be cast to java.lang.String

Dear,

I'm currently working on creating a driver for the National instruments 5451 Arbitrary waveform generator.

For a start I created the IVI driver using makemid. (attachement NI_PXIE_5451_IVI.mdd).

Now I want to write a wrapper-driver to make the use of this driver a lot easier. (Attachement NI_PXIE_5451.mdd).

But when using this driver I get the weirdest error. And I can't trace back where this comes from either.

The device connects properly and if I just use the (difficult to use) IVI-driver, then this works and the device gets the correct settings. Now if I use the wrapper, the device works as well, it gets the correct settings etc but the error that occurs is the following:

      Error using instrument/subsasgn (line 102)
  Java exception occurred:
  java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.String

  at ICGroup269.getMode(ICGroup269.java)

Please find in attachement the testing script as well (test_IVI.m)

Is this a matlab-bug of some sort or am I missing something?

Thanks in advance!

Best regards,

Hans Narinx

ICsense N.V.

[Walter Roberson]

Your test_IVI.m is not attached at the moment.