Script fuction in Waveform: directly get the ADC reading

[AaronQ]

I'm using the Diligent Analog discovery 2, and I'd like to program it such that it will take the ADC channel 1 reading and drive my motor with PWM signal generated from the function generator. However, using Scope1.single(); is extreamly time consuming. I just need 1 output reading from the ADC, instead, it gives me 8000 points. Is there any way that I can directly get a single ADC reading?

[attila]

Hi @AaronQ

With WF SDK the FDwfAnalogInStatus(hdwf, 0, 0) FDwfAnalogInStatusSample(hdwf, N, &V) return only one sample per channel.

This is not available with WF app but for low latency make sure to:
- set Trigger None
- high sample Rate (low time base)
- use only the Scope.wait() in the loop, this will perform a capture
- have the Scope interface in background to avoid CPU time on drawing
+ you could use average measurement to reduce noise in reading