|MATLAB Function Reference|
Connect a serial port object to the device
||A serial port object or an array of serial port objects.
obj to the device.
Before you can perform a read or write operation,
obj must be connected to the device with the
fopen function. When
obj is connected to the device:
Statusproperty is set to
BytesToOutputproperties are set to 0.
An error is returned if you attempt to perform a read or write operation while
obj is not connected to the device. You can connect only one serial port object to a given device.
Some properties are read-only while the serial port object is open (connected), and must be configured before using
fopen. Examples include
OutputBufferSize. Refer to the property reference pages to determine which properties have this constraint.
The values for some properties are verified only after
obj is connected to the device. If any of these properties are incorrectly configured, then an error is returned when
fopen is issued and
obj is not connected to the device. Properties of this type include
BaudRate, and are associated with device settings.
If you use the
help command to display help for
fopen, then you need to supply the pathname shown below.
This example creates the serial port object
s to the device using
fopen, writes and reads text data, and then disconnects
s from the device.