Hi Shahin,
I've found something that works for me using older commands in R2019a.
Let's assume device like multimeter where we know port (or we can detect it), baudrate and we're periodically sending there command like tell me value, output is string (char).
clc; clear; close all
s = serial('COM3','BaudRate',230400);
fopen(s)
for i = 1:11
fprintf(s,"VAL?")
pause(1)
fgets(s) % <- output
end
fclose(s)
Hope this helped you!
