Question

As stated in title.
I want to have a certain interval time for each loop, say 60 seconds.

My problem is I have a code inside a loop to perform measurement with a external device.
This measurement takes 5-10 seconds.
So I cannot simply use pause(60) inside the loop because the interval time depends on how long each measurement takes.

Is there any way to fix the time interval of loop?

Answer 1

Sounds like you’d be able to use parallel threading to achieve what you want. One thread kicks off the measurement every sixty seconds, using a worker thread so that the measurement doesn’t block up the time interval.

Perhaps try the batch function with something like this:

while(True)
    hBatch = batch(@doMeasurement);
    pause(60);
    measurement = fetchOutputs(hBatch){1}
end

---

Better would be to use the timer function:

t = timer('TimerFcn', @doMeasurement, 'Period', 60.0);
start(t)