using AnalogIn for data acquisition

[ssm]

Dear Help,

I have AD2, using WaveGen and Scope, programmed using the SDK libraries under Ubuntu.

I am reading data using the following code:

for(int iTrigger = 0; iTrigger < EXP->NoAcquisitions; iTrigger++){

                printf("Iteration Number = %d \n",iTrigger);

                // begin acquisition

                FDwfAnalogInConfigure(hdwf, false, true);

                FDwfAnalogOutConfigure(hdwf, 0, true);

                while(true){

                    FDwfAnalogInStatus(hdwf, true, &sts);

                        if(sts == DwfStateDone) {

                            break;

                        }

                }

                FDwfAnalogInConfigure(hdwf, false, false);

                FDwfAnalogOutConfigure(hdwf, 0, false);

                // acquisition done, samples should be taken from the buffer

                // get the samples for two channels

                FDwfAnalogInStatusData(hdwf, 0, EXP->ScopeC0Samples, AD2ScopeBufferSize);

                FDwfAnalogInStatusData(hdwf, 1, EXP->ScopeC1Samples, AD2ScopeBufferSize);

                // doing some work on the collected data

            }

Now the size of the scope buffer is configured to be 8192, but I only need to read 605 samples, reading all 8192 samples is taking time, is there a way to stop at the specific number of samples and read them?

thank you,

ssm

            

 

[attila]

Hi @ssm

Use FDwfAnalogInBufferSizeSet(hdwf, 605)

[ssm]

thanks a million,

ssm