class DigitalOut(object):
    def __init__(self, module, pin):
        self.module, self.pin = module, pin

    def on(self):
        outputs = self.module.read()
        outputs |= (1 << self.pin)
        self.module.write(outputs)

    def off(self):
        outputs = self.module.read()
        outputs &= ~(1 << self.pin)
        self.module.write(outputs)

class DigitalIn(object):
    def __init__(self, module, pin):
        self.module, self.pin = module, pin

    def getValue(self):
        return self.module.read() & (1 << self.pin) != 0

class R_TRIG(object):
    def __init__(self):
        self.__state = False

    def __call__(self, cur_state):
        retVal = cur_state and not self.__state
        self.__state = cur_state
        return retVal