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PortAddress - Indicate base address of parallel port

Description

The PC supports up to three parallel ports that are assigned the labels LPT1, LPT2, and LPT3. You can use any of these standard ports as long as they use the usual base addresses, which are (in hex) 378, 278, and 3BC, respectively.

Additional ports, or standard ports not assigned the usual base addresses, are not accessible by the toolbox. Note that most PCs that support MATLAB will include a single parallel printer port with base address 378 (LPT1).

Note   The Parallel Port adaptor will be deprecated in a future version of the toolbox. If you create a Data Acquisition Toolbox™ object for 'parallel' beginning in R2008b, you will receive a warning stating that this adaptor will be removed in a future release. See the supported hardware page at www.mathworks.com/products/daq/supportedio.html for more information.

Characteristics

Vendor	Parallel port
Usage	DIO, Common
Access	Read only
Data type	String
Read-only when running	Yes

Values

The value is automatically defined when the object is created.

Examples

Create a digital I/O object for parallel port LPT1 and return the PortAddress value.

dio = digitalio('parallel','LPT1');
get(dio,'PortAddress')

ans =
0x378

The returned value indicates that LPT1 uses the usual base address.

OutOfDataMode

StandardSampleRates

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