Teensy + Matlab Serial Communication Problem (12Mbit/S)

MATLABserialteensy

Im trying to send some data from my teensy to matlab but matlab didnt even call the callback function:
This is my matlab Funcion:

delete(instrfind);
s = serial('COM15','BaudRate',9600,'ReadAsyncMode','continuous');
s.BytesAvailableFcn = {@graf};
fopen(s);

This is the callback function I comment it so I can see only the display on console

function graf(obj,event)
disp('a');
%{
texto=fscanf(obj);
texto2=strsplit(texto,',');
x=cellfun(@str2num,texto2);
plot(x);
%}
end

My teensy baudrate is 9600 and im printing like this 

Serial.println(se);

so it has the terminator all right..
I can see the serial on the arduino serial monitor and in the Realterm

Edited

I just find that my teensy work ad 12Mbit/s
Link is there a way to configure matlab serial port at that speed?

Best Answer

Just a note to say I use gnu-octave so I went to Mathworks and the help page said the following:

Create the serial port object s for a Tektronix® TDS 210 two-channel oscilloscope connected to the serial port COM1.

s = serial('COM1');

Configure s to execute the callback function instrcallback when 40 bytes are available in the input buffer.

s.BytesAvailableFcnCount = 40;
s.BytesAvailableFcnMode = 'byte';
s.BytesAvailableFcn = @instrcallback;
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