fijate que el matlab te permite manejar el puerto serie con funciones internas:
help serial
SERIAL Construct serial port object.
S = SERIAL('PORT') constructs a serial port object associated with
port, PORT. If PORT does not exist or is in use you will not be able
to connect the serial port object to the device.
In order to communicate with the device, the object must be connected
to the serial port with the FOPEN function.
When the serial port object is constructed, the object's Status property
is closed. Once the object is connected to the serial port with the
FOPEN function, the Status property is configured to open. Only one serial
port object may be connected to a serial port at a time.
S = SERIAL('PORT','P1',V1,'P2',V2,...) constructs a serial port object
associated with port, PORT, and with the specified property values. If
an invalid property name or property value is specified the object will
not be created.
Note that the property value pairs can be in any format supported by
the SET function, i.e., param-value string pairs, structures, and
param-value cell array pairs.
Example:
% To construct a serial port object:
s1 = serial('COM1');
s2 = serial('COM2', 'BaudRate', 1200);
% To connect the serial port object to the serial port:
fopen(s1)
fopen(s2)
% To query the device.
fprintf(s1, '*IDN?');
idn = fscanf(s1);
% To disconnect the serial port object from the serial port.
fclose(s1);
fclose(s2);
See also serial/fopen.
Reference page in Help browser
doc serial
