Shared Variable Communication on PDA

[volker_sbk]

Hi,

I stumbled across something when using LV8.5 networked shared variables to communicate between a cFP2120 running RT5.0.1 and a PDA running Windows Mobile 5.

The problem seems to occur when creating shared variables from custom controls that contain enums. As soon a custom control contains an enum, the shared variable based on teh control will not contain the proper info in any of its fields. This seems to disappear when I convert the enum into a 32bit signed integer, or remove the enum alltogether.

Has anybody seen this before? 

Btw, using networked shared variables from custom controls with enums works great in Windows eXP / XP.

Volker

[Hesloppy]

Hi Volker,

I am going to do some tests and look into this.  Thank you for reporting it.

Best Regards,

[Hesloppy]

Hi Volker,

I tested this with LabVIEW 8.6.1 with Windows CE and did not have any problems.  Windows Mobile is based on Windows CE.

Best Regards,

[volker_sbk]

Are there any major differences between the mobile module for LV 8.5 and 8.6.1 and how they handle shared variables?

Try dropping a cluster control into a vi front panel and add a numeric control and enum to the cluster. Then make the cluster a type def and use this as basis for the networked shared variable. 

In any case; my workaround is to change the shared variable type to a string and flatten all the info to a string using the type def. Unflattening the string on the PDA side seems to yield all the correct values.

Volker

[Hesloppy]

Hi Volker,

I did it with the enum in a cluster and had problems.  When I did it the first time I had a numeric contol and an enum control.  I wrote both to shared variables.  They both updated fine.  

This time I added another shared variable that had an enum and a numeric control.  I wrote the same values to the cluster variable as the other two variables.  The values in the cluster did not update, while the other ones did.

I am going to do some more testing on this tomorrow.  

Thanks again for reporting this.