C Pointers and Labview ?

[Joao_Araujo]

Hello,

I am using a GT658 TIA board and I would like to have some help running it with LabVIEW.

I can setup the board using the Call Library Function and the board's DLL. My problem is with these 2 functions:

GT65X_add_unpacked_chan(&MeasureObj, 0, TimeData, EventData, ARRAY_SIZE);

GT65X_mrs_obj_read(&MeasureObj, ARRAY_SIZE, 0);

MeasureObj: Structure

TimeData: Array of doubles

EventData: Array of UINT32

ARRAY_SIZE : UINT32 constant.

My problem is that when I do the obj_read, the measured values I want are in the TimeData/EventData array, but the function doesn't return the arrays. So I am guessing that the obj_read function is using a pointer to the TimeData/EventData array to return the data.

How can I access the TimeData/EventData array if the obj_read function doesn't return the array ? Is there a way I can access the wanted array from memory ?

Take care,

Joao Araujo

[Ankita]

Hi Joao,

I think this example will give you an idea of how to accomplish the task:

Retrieve Data from a C Array Pointer in LabVIEW [link removed; example no longer available]

Hope this helps,

Ankita

[fredcm1]

Hi Ankita, Do you know how to write values from labview to a pointer?