[Octave-bug-tracker] [bug #59581] [octave forge] (instrument-control) serialport error after second call

[Jens Bongartz]

Follow-up Comment #7, bug #59581 (project octave):

The following code is the core of my serial communication. The Arduino sends
strings like "REF:123,ADC:456" with 200Hz. The script extracts the numbers and
adds them to the ref_array and adc_array. I use read() and fread() as shown in
the online reference. Are there better ways? 
Using fread() in Octave 6.1.0 leads to the mentioned error message.

Thanks for your help!

pkg load instrument-control;
clear all;

serial_01 = serialport("COM9",115200);

flush(serial_01);
adc_array = [];
ref_array = [];
x_index = 0;

do
   bytesavailable = serial_01.numbytesavailable;
   
   if (bytesavailable > 0)
     inSerial = read(serial_01,bytesavailable);
     ##inSerial = fread(serial_01);
     inChar = char(inSerial);
     inNumbers = strsplit(inChar,{',','ADC:','REF:'});
     count = length(inNumbers);
     for i = 2:2:count
        ref = str2num(inNumbers{i});
        adc = str2num(inNumbers{i+1});
        adc_array(end+1)=adc;
        ref_array(end+1)=ref;
        x_index++
     endfor
   endif
until(kbhit(1) == 'x');

clear serial_01;



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