@Override
public GpioPin provisionPin(GpioProvider provider, Pin pin, String name, PinMode mode) {
// if an existing pin has been previously created, then throw an error
for (GpioPin p : pins) {
if (p.getProvider().equals(provider) && p.getPin().equals(pin)) {
throw new GpioPinExistsException(pin);
}
}
// create new GPIO pin instance
GpioPin gpioPin = new GpioPinImpl(this, provider, pin);
// set the gpio pin name
if (name != null) {
gpioPin.setName(name);
}
// export this pin
gpioPin.export(mode);
// add this new pin instance to the managed collection
pins.add(gpioPin);
// return new new pin instance
return gpioPin;
}
@Override
public void export(PinMode mode, GpioPin... pin) {
if (pin == null || pin.length == 0) {
throw new IllegalArgumentException("Missing pin argument.");
}
for (GpioPin p : pin) {
// ensure the requested pin has been provisioned
if (!pins.contains(p)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
// export the pin
p.export(mode);
}
}