%Opening serial port
s = serial('COM9');
set(s,'BaudRate',9600,'Terminator','CR');  %Note that CR will be concatenated to all commands
fopen(s);
s       %print for debugging

t=1     %loop index

while true
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %Here is code to mess with a joystick that works fine, using VS command
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    if button(joy, 3) == 1          %Button3 of joystick should trigger position reading
        fprintf(s,'vs,0,0');        %Halt joystick movement
        pause(1)                    %Debouncing
        fprintf(s,'p');             %Axe-pos reading command
        fgets(s)                    %Reading the answer
end


%This way to increment follows the skipped parts and is required for timing
if mod(t, 100)==0
        fprintf(s,'%s',Command);
        t=1;
    else
        t=t+1;
end

>> s = openserial()
%properties as before, skipped to save space
>> fprintf(s,'ps');
>> fgets(s)

ans =

100000,100000

>> fprintf(s,'p');
>> fgets(s)

ans =

100000,100000,0

>> fprintf(s,'p');
>> fgets(s)

ans =

R