Reading two different formated data types from serial port

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Elduderino
Elduderino 2015-2-12
Hey, I have been trying to read some data sent from an Arduino into Matlab. It works fine for my first type of data, but when i try to read the second set of data with fscanf, Matlab just shows me 2 empty chars. Below I included a hex dump of my data types and the corresponding Ascii Values (the dots representing new line chars or carriage returns):
21 21 21 0D 0A !!!..
2nd set of data
0D 0A 30 33 36 0D 0A ..036..
Thanks in advance
The relevant Matlab code
Initalizing serial Port:
function [] = s_init_run()
global s
s = serial('com6'); set(s, 'BaudRate', 38400,'Terminator', 'CR/LF',... 'InputBufferSize', 1024, 'OutputBufferSize', 1024,'timeout',1000);
s.BytesAvailableFcnCount = 5;
s.BytesAvailableFcnMode = 'byte';
s.BytesAvailableFcn =@(~,~)mycallback(s);
ready = 'on';
fopen(s);
pause(2);
fprintf(s,'199');
pause(2);
fprintf(s,'189');
end
callback function
function [] = mycallback(s)
global u
global erg
%callback from serial port
ardudata1 = fscanf(s);
zeichen = ''; r=1; for ll=1:length(ardudata1)
if isspace(ardudata1(ll))==0
zeichen(1,r) = ardudata1(ll);
r=r+1;
end
end
ardudata = zeichen
butsym{1,1} = '!';
butsym{1,2} = '?';
butsym{1,3} = 'q';
flushinput(s);
if u == size(erg.conds,3)
disp('done')
else
if strcmp(ardudata(1),butsym{1,1})
fprintf(s,'191')
gp_signal; %generates signal
pause(1)
elseif strcmp(ardudata(1),butsym{1,2})
u = u+1; %sets counter+1 and sends some data to the arduino
fprintf(s,'189')
pause(2);
fprintf(s,'199')
elseif strcmp(ardudata(1),butsym{1,3})
gp_signal; %generates signal
pause(1)
else
led_num = str2num(ardudata);
s_fnct(led_num) %saves values
pause(1)
end
end
end

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