expyriment.io.extras.SimpleParallelPort

class expyriment.io.extras.SimpleParallelPort(port=None)

A class implementing a parallel port input and output.

Notes

CAUTION: Under Windows (starting from 2000) direct I/O is blocked. Install http://sourceforge.net/projects/pyserial/files/pyparallel/giveio/

Methods

__init__(port=None)

Create a parallel port input and output.

clear()

Clear the parallel port.

Dummy method required for port interfaces (see e.g. ButtonBox)

static get_available_ports()

Return an array of strings representing the available parallel ports.

If pyparallel is not installed, ‘None’ will be returned.

Returns:

ports : list

array of strings representing the available parallel ports

has_input_history

Returns always False, because ParallelPort has no input history.

logging

Getter for logging.

parallel

Getter for parallel

poll()

Poll the parallel port.

The parallel port will be polled and the result will be returned. The parallel module for Python can only read three of the status lines. The result is thus coded in three bits:

Acknowledge Paper-Out Selected

Example: ‘4’ means only Selected is receiving data (“001”).

To send out data the actual data lines are used.

port

Getter for port.

send(data)

Send data.

Parameters:

data : int

data to be sent

set_logging(onoff)

Set logging of this object on or off

Parameters:

onoff : bool

set logging on (True) or off (False)

Notes

See also design.experiment.set_log_level fur further information about event logging.