-
-class Pin:
- """Pins dont exist in CPython so...lets make our own!"""
-
- IN = 0
- OUT = 1
- LOW = 0
- HIGH = 1
- PULL_NONE = 0
- PULL_UP = 1
- PULL_DOWN = 2
-
- id = None
- _value = LOW
- _mode = IN
-
- def __init__(self, bcm_number):
- self.id = bcm_number
-
- def __repr__(self):
- return str(self.id)
-
- def __eq__(self, other):
- return self.id == other
-
- def init(self, mode=IN, pull=None):
- """Initialize the Pin"""
- if mode is not None:
- if mode == self.IN:
- self._mode = self.IN
- GPIO.setup(self.id, GPIO.IN)
- elif mode == self.OUT:
- self._mode = self.OUT
- GPIO.setup(self.id, GPIO.OUT)
- else:
- raise RuntimeError("Invalid mode for pin: %s" % self.id)
- if pull is not None:
- if self._mode != self.IN:
- raise RuntimeError("Cannot set pull resistor on output")
- if pull == self.PULL_UP:
- GPIO.setup(self.id, GPIO.IN, pull_up_down=GPIO.PUD_UP)
- elif pull == self.PULL_DOWN:
- GPIO.setup(self.id, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
- else:
- raise RuntimeError("Invalid pull for pin: %s" % self.id)
-
- def value(self, val=None):
- """Set or return the Pin Value"""
- if val is not None:
- if val == self.LOW:
- self._value = val
- GPIO.output(self.id, val)
- elif val == self.HIGH:
- self._value = val
- GPIO.output(self.id, val)
- else:
- raise RuntimeError("Invalid value for pin")
- return None
- return GPIO.input(self.id)
-
-
-# Pi 1B rev1 only?