Edge counting buffer/array size problem (VC++)

[HT156]

Hello,

I accidentally posted this in the multifunction DAQ forum so forgive me for posting this again here.

I am attempting to do a buffered edge counting with PCI-6115 for the application I am trying to develop.

Ideally, I would initialize a buffer array, then use a sample clock to time and acquire counter values which would then be stored in a buffer.  After a certain number of samples, I would then use the DAQmxReadCounterU32 function to extract the said data and perform some calculations.

However, windows gives me an error when I try to initalize the size of the buffer array to be larger than 255001, I need 264000+.

Essentially, only this part of the code seems to execute:

int         error=0;

TaskHandle  taskHandle=0;

TaskHandle  taskHandleCtr=0;

uInt32      data[260000];

After trying to initialize the uInt32 array my program crashes saying there was an error with my exe with a popup asking me if i want to send an error report to Microsoft.

Would this be a problem of windows not allowing me to allocated more than 255000 32 bit samples for that array?  If so how do i put the array onto the onboard memory?

[HT156 · Accepted solution]

Sorry guys, it actually didn`t have anything to do with the DAQ board.

Apparently it was C++ that limits the size of the array I was calling, which was the traditional "int a[size]".

I used this instead to solve my problem:

    int* a = NULL;
    a = new int[10000000];

Problem solved.

Sorry for posting in the wrong forum, and thank you to everyone who's read this.

Howard