Class Pin - control I/O pins¶
Basic introduction / tutorial
Constructors¶
-
class
machine.
Pin
(id, ...)¶ Create a new Pin object associated with id. If additional arguments are given, they are used to initialise the pin ( see
Pin.init()
). If the pin has been instantiated before, the previously instantiated object will be returned.
Class methods¶
-
classmethod
Pin.
set_port_config
(port, port_config, input_disable, slewrate, drive_strength)¶ This function sets the port config for
port_config
. The arguments are:- ‘’port’’ is the port to set the config for. It can either be a character or a number denoting the port, where port A = 0.
port_config
whichport_config
to configure. Can be an integer between 0 and 1.input_disable
is a boolean value. IfTrue
then inputs are disabled for this port.slewrate
is the slewrate. It can be an integer between 0 and 7, where 7 gives the fastest slewrate.drive_strength
is the drive strength. The possible values are:Pin.DRIVE_STRENGTH_HIGH
which equates to 10mA.Pin.DRIVE_STRENGTH_LOW
which equates to 1mA.
Methods¶
-
Pin.
init
(mode, pull, *, filter=False, port_config = 0)¶ Initialize the pin. The arguments are:
mode
which selects the mode of the pin. The possible values are:Pin.DISABLED
- pin is disabledPin.IN
- input pinPin.OUT
- output pinPin.OPEN_DRAIN
- open-drain mode, also called wired-and mode.Pin.OPEN_SOURCE
- open-source mode, also called wired-or mode.
pull
which selects the pull direction. Possible values are:Pin.PULL_UP
- pull-up resistor. Only applicable when mode isPin.IN
orPin.OPEN_DRAIN
Pin.PULL_DOWN
- pull-down resistor. Only applicable when mode isPin.IN
orPin.OPEN_SOURCE
.Pin.PULL_NONE
- no pull resistor.
filter
Selects whether the pin has the glitch suppression filter enabled or not. This accepts a boolean value. Only applicable ifmode
isPin.IN
orPin.OPEN_DRAIN
.:port_config
- which port config is used by this pin. Can be an integer between 0 and 1.
-
Pin.
__call__
([value])¶ Get or set the digital logic level of the pin:
- With no argument, return 0 or 1 depending on the logic level of the pin.
- With
value
given, sets the output of the pin if the mode is Pin.OUT, Pin.OPEN_DRAIN or Pin.OPEN_SOURCE, otherwise does nothing. Ifvalue
converts to booleanTrue
the pin is set high, otherwise it is set low.
-
Pin.
value
([value])¶ Identical to
Pin.__call__()
.
-
Pin.
toggle
()¶ Toggles the pin output if it is set to an output mode, either
Pin.OUT
,Pin.OPEN_DRAIN
, orPin.OPEN_SOURCE
.
Example:
import machine
import tbsense
led = machine.Pin('PD11') #Create Pin object from Led Pin
led.init(machine.Pin.OUT, machine.Pin.PULL_NONE)
#Toggle led using machine library
while True:
led.toggle()
tbsense.delay(500)
-
Pin.
id
()¶ Get the pin id.

-
Pin.
mode
([mode])¶ Set or get the pin mode.
-
Pin.
pull
([pull])¶ Set or get the pin pull direction.
-
Pin.
filter
([filter])¶ Get or set whether the filter is enabled or not.
-
Pin.
port_config
([port_config])¶ Get or set the port config used for this pin.
-
Pin.
irq
(*, trigger, int_no = pin_no, priority=7, handler)¶ Initialize an interrupt that is triggered when the pin input level is changed.
trigger
configures which edge generates an interrupt. Possible values are:Pin.IRQ_FALLING
for interrupt on a falling edge.Pin.IRQ_RISING
for an interrupt on a rising edge.
The values can be ORed together, for instance trigger = Pin.IRQ_FALLING | Pin.IRQ_RISING.
int_no
specifies which interrupt number is used for this pin interrupt. Note that two pins cannot share the same interrupt number. The value defaults to the cpu pin number.priority
level of the interrupt. Can be in the range of 1-7, where a higher value represents a higher priority.handler
which is an optional callback when the interrupt occurs. The callback should be of the formdef cb( pin_obj )
.
This function returns an irq-object. If no arguments are given, the pin interrupt configuration is left as is. This function provides a useful method of getting the irq-object inside the interrupt handler.
-
Pin.
enable_em4wu
(level)¶ Initialize a pin for wakeup from EM4. The function will throw a ValueError exception if the pin does not support EM4 wakeup or if the pin is configured incorrectly. The parameter
level
decides whether the chip will wake up on low or high logic level.
-
Pin.
prepare_em4
(em4_type)¶ Prepare the peripheral for entry into EM4. This function is used by the
enter_em4h()
andenter_em4s()
functions. Valid values forem4_type
are:em.EM4_TYPE_HIBERNATE
- for entering EM4Hem.EM4_TYPE_SHUTDOWN
- for entering EM4S
Attributes¶
-
class
Pin.
board
¶ Contains all
Pin
objects supported by the board.
-
class
Pin.
mcu
¶ Contains all
Pin
objects supported by the microcontroller.


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# import 'macro/forms.html' as forms # import 'macro/utils.html' as utils # extends 'course/course_base.html' # block course_content


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As a general policy, breakfast is served between 9:30am and 12:00am. Otherwise, customers are allowed to prepare breakfast themselves at any time as a buffet service. The next good-quality products are offered with it:
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{% extends 'modules/course_explorer/views/base_explorer.html' %} {% block top_content %} {% endblock %} {% block main_content %}
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{% extends "layout.html" %} {% block body %}
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flixel.system.input.gamepad.FlxGamepad
- type
- class
Instance Methods
- returns
- Whether any buttons are currently pressed.
- returns
- Whether any buttons are currently pressed.
- parameters
ButtonID
The button id (from 0 to 7).
- returns
- Whether the button was just pressed
- parameters
buttonID
The button id (from 0 to 7).
- returns
- Whether the button is just released.
- parameters
ButtonID
The button id (from 0 to 7).
- returns
- Whether the button is pressed