How to make Nested while loops faster
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
I am running a while loop that is scanning the serial port for data. This while loop is inside a bigger while loop that is continuously acquiring data from an instrument (a spectrometer).
The smaller while loop that scans the port continuously writes to a file until the while condition becomes False. I have noticed that this while loop takes so much time that it interferes with the data acquisition from the spectrometer. I use the commands fread(s) to read from serial port object s and fwrite to write to file. Both these processes seem extremely slow and compromise data acquisition.
Is there a way to speed this up? Is there something I can use that is faster than fread? Should I be writing an array instead of to a file? If so, how do I write to an array during a while loop where I'm unsure of how big the array will be beforehand...
0 Kommentare
Antworten (1)
Walter Roberson
am 4 Apr. 2016
It sounds as if you should be using a BytesAvailableFcn to trigger a callback when there is data available, and when there is, read BytesAvailableFcnCount worth of data.
Siehe auch
Kategorien
Mehr zu Loops and Conditional Statements finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!