Package VisionEgg :: Module DaqLPT :: Class LPTTriggerOutController |
[frames] | no frames]

# Class LPTTriggerOutController

source code

                object --+
                         |
    FlowControl.Controller --+
                             |
                            LPTTriggerOutController

    Use 8 bits of digital output for triggering and frame timing verification.

    Bit 0 (pin 2) goes high when the go loop begins and low when the
    loop ends.  Bits 1-7 (pins 3-9) count the frame_number (modulo
    2^7) in binary.  Looking at any one of these pins therefore
    provides verification that your stimulus is not skipping
    frames.

Instance Methods
__init__(self, lpt_device=None) Create instance of Controller. | source code
during_go_eval(self) Called by Presentation. | source code
between_go_eval(self) Called by Presentation. | source code
Inherited from `FlowControl.Controller`: `evaluate_now`, `returns_type`, `set_eval_frequency` Inherited from `object`: `__delattr__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__str__`

Class Variables
Inherited from `FlowControl.Controller`: `EVERY_FRAME`, `FRAMES_ABSOLUTE`, `FRAMES_SINCE_GO`, `NEVER`, `NOT_BETWEEN_GO`, `NOT_DURING_GO`, `ONCE`, `TIME_INDEPENDENT`, `TIME_SEC_ABSOLUTE`, `TIME_SEC_SINCE_GO`, `TRANSITIONS`, `flag_dictionary`

Properties
Inherited from `object`: `__class__`

Method Details

### __init__(self, lpt_device=None) (Constructor) | source code
    Create instance of Controller.

    Arguments:

    eval_frequency -- Int, bitwise "or" of flags
    temporal_variables -- Int, bitwise "or" of flags
    return_type -- Set to type() of the parameter under control
Overrides: FlowControl.Controller.__init__ (inherited documentation)

### during_go_eval(self) | source code
    Called by Presentation. Evaluate during the main 'go' loop.

    Override this method in subclasses.
Overrides: FlowControl.Controller.during_go_eval (inherited documentation)

### between_go_eval(self) | source code
    Called by Presentation. Evaluate between runs of the main 'go' loop.

    Override this method in subclasses.
Overrides: FlowControl.Controller.between_go_eval (inherited documentation)