VB6 oldmGetValidSample error

[SLam5]

Error: valid samples = 0 <> adc bufferlength = 4800

I am somewhat new to VB6. I am having the error above when I restart my program (Start->Stop->Start->Error). There is no error on the first start. I understand that the oldmGetValidSample is an imported function, but, for some reason, on the second start, samples is set to 0 instead of being updated. What does oldmGetValidSample do to the samples variable exactly?

[Fausto]

Hello @SLam5.

Please reference Data Translation's Data Acquisition SDK Help file for that function.

C:\Program Files (x86)\Data Translation\Win32\SDK\Documentation\dasdk.chm

Also, Visual Basic 6 is no longer supported by Microsoft.  Please reference and test Data Translation's VB examples located in the following folder:

C:\Program Files (x86)\Data Translation\Win32\DTx-EZ\Examples\ExamplesVB

 

 

Regards,

Fausto

[SLam5]

Hi @Fausto,

Thank you for the help. I am still a confused on why I am getting a valid samples = 0 on the re-start if the hbuf is non-zero. Is the data width so large that the output is close to 0?

Thank you, 

Steven

[Fausto]

Hello @SLam5.

That function determines the number of valid samples in a buffer.  The data width is not "so large".  Most likely, there are no valid samples up till the error occuring. 

Additional reference is the DTxEZ Getting Started Manual in the 'C:\Program Files (x86)\Data Translation\Win32\DTx-EZ\Documentation' folder.

Regards,

Fausto