Reading two different formated data types from serial port

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