Torre de señales#

Los comandos de la torre de señales solo se pueden utilizar con la torre de señales CTE.

Inicializando la clase SignalTower #

Una torre de señales se crea utilizando el siguiente constructor:

SignalTower(port)

Este constructor utiliza un parámetro:

Parámetro	Descripción
`port`	A valid `Smart Port` that the SignalTower is connected to.

# Construct a Signal Tower "signaltower_1" with the
# SignalTower class.
signaltower_1 = SignalTower(Ports.Port1)

This signaltower_1 object will be used in all subsequent examples throughout this API documentation when referring to SignalTower class methods.

Métodos de clase #

set_color()#

The set_color(color, state) method is used to set the Signal Tower’s color and state indefinitely, or until the method is used again.

Parámetro	Descripción
`color`	A valid `SignalTowerColorType`.
`state`	A valid `SignalTowerColorType`.

Devoluciones: Ninguna

# Set the Signal Tower to start blinking the blue LED.
signaltower_1.set_color(signal_tower.BLUE, signal_tower.BLINK)

set_colors()#

The set_colors(r, y, g, b, w) method turns all LEDs on the Signal Tower on or off.

Parámetro	Descripción
`r`	A valid `SignalTowerColorType` to set the red LED to.
`y`	A valid `SignalTowerColorType` to set the yellow LED to.
`g`	A valid `SignalTowerColorType` to set the green LED to.
`b`	A valid `SignalTowerColorType` to set the blue LED to.
`w`	A valid `SignalTowerColorType` to set the white LED to.

Devoluciones: Ninguna

# Turn on all LEDs.
signaltower_1.set_color(signal_tower.ON, signal_tower.ON, signal_tower.ON, signal_tower.ON, signal_tower.ON)

# Turn on just the red LED.
signaltower_1.set_color(signal_tower.ON, signal_tower.OFF, signal_tower.OFF, signal_tower.OFF, signal_tower.OFF)

pressing()#

The pressing() method returns whether the Signal Tower’s button is currently being pressed.

Returns: True if the Signal Tower’s button is currently being pressed. False if it is not.

pressed()#

The pressed(callback, arg) method registers a function to be called when the Signal Tower’s button is pressed.

Parámetro	Descripción
`callback`	Una función que se llamará cuando se presione el botón
`arg`	Opcional. Una tupla que se utiliza para pasar argumentos a la función de devolución de llamada

Devuelve: Una instancia de la clase Event.

# Define a function tower_button_pressed().
def tower_button_pressed():
    # Print that the Signal Tower's button was pressed to
    # the Brain's screen.
    brain.screen.print("button pressed")

# Run tower_button_pressed when the Signal Tower's button 
# is pressed.
signaltower_1.pressed(tower_button_pressed)

released()#

The released(callback, arg) method registers a function to be called when the Signal Tower’s button is released.

Parámetro	Descripción
`callback`	Una función que se llamará cuando se suelte el botón
`arg`	Opcional. Una tupla que se utiliza para pasar argumentos a la función de devolución de llamada

Devuelve: Una instancia de la clase Event

# Define a function tower_button_released().
def tower_button_released():
    # Print that the Signal Tower's button was released
    # to the Brain's screen.
    brain.screen.print("button released")

# Run tower_button_released when the Signal Tower's button
# is released.
signaltower_1.released(tower_button_released)

installed()#

The installed() method checks for device connection.

Returns: True if the device is connected. False if it is not.

timestamp()#

The timestamp() method returns the timestamp of the last received status packet from the Signal Tower.

Devuelve: La marca de tiempo del último paquete de estado recibido en milisegundos.