@Override
public void setState(Pin pin, PinState state) {
// validate
if (hasPin(pin) == false) {
throw new InvalidPinException(pin);
}
// only permit invocation on pins set to DIGITAL_OUTPUT modes
if (getPinCache(pin).getMode() != PinMode.DIGITAL_OUTPUT) {
throw new InvalidPinModeException(
pin,
"Invalid pin mode on pin ["
+ pin.getName()
+ "]; cannot setState() when pin mode is ["
+ getPinCache(pin).getMode().getName()
+ "]");
}
try {
// determine A or B port based on pin address
if (pin.getAddress() < GPIO_B_OFFSET) {
setStateA(pin, state);
} else {
setStateB(pin, state);
}
} catch (IOException ex) {
throw new RuntimeException(ex);
}
// cache pin state
getPinCache(pin).setState(state);
}
@Override
public void setMode(Pin pin, PinMode mode) {
// validate
if (!pin.getSupportedPinModes().contains(mode)) {
throw new InvalidPinModeException(
pin,
"Invalid pin mode ["
+ mode.getName()
+ "]; pin ["
+ pin.getName()
+ "] does not support this mode.");
}
// validate
if (!pin.getSupportedPinModes().contains(mode)) {
throw new UnsupportedPinModeException(pin, mode);
}
// determine A or B port based on pin address
try {
if (pin.getAddress() < GPIO_B_OFFSET) {
setModeA(pin, mode);
} else {
setModeB(pin, mode);
}
} catch (IOException ex) {
throw new RuntimeException(ex);
}
// cache mode
getPinCache(pin).setMode(mode);
// if any pins are configured as input pins, then we need to start the interrupt monitoring
// thread
if (currentDirectionA > 0 || currentDirectionB > 0) {
// if the monitor has not been started, then start it now
if (monitor == null) {
// start monitoring thread
monitor = new GpioStateMonitor(this);
monitor.start();
}
} else {
// shutdown and destroy monitoring thread since there are no input pins configured
if (monitor != null) {
monitor.shutdown();
monitor = null;
}
}
}
@Override
public GpioPinPwmOutput provisionPwmOutputPin(GpioProvider provider, Pin pin, int defaultValue) {
return provisionPwmOutputPin(provider, pin, pin.getName(), defaultValue);
}
@Override
public GpioPinAnalogOutput provisionAnalogOutputPin(
GpioProvider provider, Pin pin, double defaultValue) {
return provisionAnalogOutputPin(provider, pin, pin.getName(), defaultValue);
}
@Override
public GpioPinDigitalOutput provisionDigitalOutputPin(
GpioProvider provider, Pin pin, PinState defaultState) {
return provisionDigitalOutputPin(provider, pin, pin.getName(), defaultState);
}
@Override
public GpioPinDigitalInput provisionDigitalInputPin(
GpioProvider provider, Pin pin, PinPullResistance resistance) {
// create new GPIO pin instance
return provisionDigitalInputPin(provider, pin, pin.getName(), resistance);
}
@Override
public GpioPinDigitalMultipurpose provisionDigitalMultipurposePin(
GpioProvider provider, Pin pin, PinMode mode, PinPullResistance resistance) {
// create new GPIO pin instance
return provisionDigitalMultipurposePin(provider, pin, pin.getName(), mode, resistance);
}
@Override
public GpioPin provisionPin(GpioProvider provider, Pin pin, PinMode mode) {
return provisionPin(provider, pin, pin.getName(), mode);
}
