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class `Pin`

Example

# Import Pin class
from robot_hat import Pin

# Create Pin object with numeric pin numbering and default input pullup enabled
d0 = Pin(0, Pin.IN, Pin.PULL_UP)
# Create Pin object with named pin numbering
d1 = Pin('D1')

# read value
value0 = d0.value()
value1 = d1.value()
print(value0, value1)

# write value
d0.value(1) # force input to output
d1.value(0)

# set pin high/low
d0.high()
d1.off()

# set interrupt
led = Pin('LED', Pin.OUT)
switch = Pin('SW', Pin.IN, Pin.PULL_DOWN)
def onPressed(chn):
    led.value(not switch.value())
switch.irq(handler=onPressed, trigger=Pin.IRQ_RISING_FALLING)

API

class robot_hat.Pin(pin, mode=None, pull=None, *args, **kwargs)

Bases: _Basic_class

Pin manipulation class

OUT = 1: Pin mode output

IN = 2: Pin mode input

PULL_UP = 17: Pin internal pull up

PULL_DOWN = 18: Pin internal pull down

PULL_NONE = None: Pin internal pull none

IRQ_FALLING = 33: Pin interrupt falling

IRQ_RISING = 34: Pin interrupt falling

IRQ_RISING_FALLING = 35: Pin interrupt both rising and falling

__init__(pin, mode=None, pull=None, *args, **kwargs)

Initialize a pin

Parameters:

pin (int/str) – pin number of Raspberry Pi
mode (int) – pin mode(IN/OUT)
pull (int) – pin pull up/down(PUD_UP/PUD_DOWN/PUD_NONE)

setup(mode, pull=None)

Setup the pin

Parameters:

mode (int) – pin mode(IN/OUT)
pull (int) – pin pull up/down(PUD_UP/PUD_DOWN/PUD_NONE)

dict(_dict=None)

Set/get the pin dictionary

Parameters:: _dict (dict) – pin dictionary, leave it empty to get the dictionary
Returns:: pin dictionary
Return type:: dict

__call__(value)

Set/get the pin value

Parameters:: value (int) – pin value, leave it empty to get the value(0/1)
Returns:: pin value(0/1)
Return type:: int

value(value: bool = None)

Set/get the pin value

Parameters:: value (int) – pin value, leave it empty to get the value(0/1)
Returns:: pin value(0/1)
Return type:: int

on()

Set pin on(high)

Returns:: pin value(1)
Return type:: int

off()

Set pin off(low)

Returns:: pin value(0)
Return type:: int

high()

Set pin high(1)

Returns:: pin value(1)
Return type:: int

low()

Set pin low(0)

Returns:: pin value(0)
Return type:: int

irq(handler, trigger, bouncetime=200, pull=None)

Set the pin interrupt

Parameters:

handler (function) – interrupt handler callback function
trigger (int) – interrupt trigger(RISING, FALLING, RISING_FALLING)
bouncetime (int) – interrupt bouncetime in miliseconds

name()

Get the pin name

Returns:: pin name
Return type:: str

class Pin

class `Pin`