testFopen.m

clear
clc
filenamesToRead = ["_TEL_HVBMS_CURR.txt", "_TEL_HVBMS_MAXCVOLT.txt", "_TEL_HVBMS_MINCVOLT.txt"];
%sFolderPath='/home/jacek/Dokumenty/Matlab/Testy LEM MotoPark/lem_logi_motopark_30102020/20201030_092123662678_decoded';
sFolderPath='/home/jacek/Dokumenty/Matlab/Testy LEM MotoPark/lem_logi_motopark_30102020/20201030_100139001723_decoded';
firstFileName = erase(sFolderPath, '_decoded');
%get first part of folder name
firstFileName = reverse(extractBetween(reverse(firstFileName), 1, '/'));
strcat(sFolderPath, '/', firstFileName, filenamesToRead(1))
fid_1 = fopen(strcat(sFolderPath, '/', firstFileName, filenamesToRead(1)), 'r');
%c=textscan(fid_1, '%s %s');
c=fscanf(fid_1, '%c');
w=splitlines(c);
w=split(w(1:(length(w)-1)));
values = str2double((strrep(w(:, 2), ',','.')));
times=zeros(1, length(w));
for i=1:length(w)
    times(i) = cellfun(@(x)str2double(x),regexp(char(w(i,1)),':','split'))*[3600000;60000;1000;1;0.001];
end
fclose(fid_1);
plot(times, values)