Stop asynchronous read and write operations
stopasync(obj)
| An interface object or an array of interface objects. |
stopasync(obj) stops any asynchronous
read or write operation that is in progress for obj.
You can write data asynchronously using the fprintf or fwrite functions. You can read
data asynchronously using the readasync function, or by
configuring the ReadAsyncMode property to
continuous (serial port, TCPIP, UDP, and VISA-serial
objects). In-progress asynchronous operations are indicated by the
TransferStatus property.
If obj is an array of interface objects and one of the objects
cannot be stopped, the remaining objects in the array are stopped and a warning is
returned. After an object stops,
Its TransferStatus property is configured to
idle.
Its ReadAsyncMode property is configured to
manual (serial port, TCPIP, UDP, and VISA-serial
objects).
The data in its output buffer is flushed.
Data in the input buffer is not flushed. You can return this data to the
MATLAB® workspace using any of the synchronous read functions. If you execute
the readasync function, or
configure the ReadAsyncMode property to
continuous, then the new data is appended to the existing
data in the input buffer.