How to use

isSupported

method

in

com.diozero.api.PinInfo

default PwmOutputDeviceInterface provisionPwmOutputDevice(int pwmOrGpioNum, int pwmFrequency, float initialValue)
    throws RuntimeIOException {
  // Lookup by PWM number first, if not found or doesn't support
  // PWM_OUTPUT, lookup by GPIO number
  PinInfo pin_info = getBoardPinInfo().getByPwmNumber(pwmOrGpioNum);
  if (pin_info == null || !pin_info.isSupported(DeviceMode.PWM_OUTPUT)) {
    pin_info = getBoardPinInfo().getByGpioNumber(pwmOrGpioNum);
  }
  if (pin_info != null
      && (pin_info.isSupported(DeviceMode.PWM_OUTPUT) || pin_info.isSupported(DeviceMode.DIGITAL_OUTPUT))) {
    // Ok
  } else {
    throw new InvalidModeException("Invalid mode (PWM output) for GPIO " + pwmOrGpioNum);
  }
  String key = createPinKey(pin_info);
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  PwmOutputDeviceInterface device = createPwmOutputDevice(key, pin_info, pwmFrequency, initialValue);
  deviceOpened(device);
  return device;
}

@Override
public AnalogInputDeviceInterface provisionAnalogInputDevice(int gpio) throws RuntimeIOException {
  // Special case - PiconZero can switch between digital and analog input hence use of gpio rather than adc
  PinInfo pin_info = boardPinInfo.getByGpioNumber(gpio);
  if (pin_info == null || ! pin_info.isSupported(DeviceMode.ANALOG_INPUT)) {
    throw new IllegalArgumentException("Invalid mode (analog input) for GPIO " + gpio);
  }
  
  String key = createPinKey(pin_info);
  
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  
  AnalogInputDeviceInterface device = createAnalogInputDevice(key, pin_info);
  deviceOpened(device);
  
  return device;
}
 

default AnalogOutputDeviceInterface provisionAnalogOutputDevice(int dacNumber) throws RuntimeIOException {
  PinInfo pin_info = getBoardPinInfo().getByDacNumber(dacNumber);
  if (pin_info == null || ! pin_info.isSupported(DeviceMode.ANALOG_OUTPUT)) {
    throw new InvalidModeException("Invalid mode (analog output) for DAC " + dacNumber);
  }
  
  String key = createPinKey(pin_info);
  
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  
  AnalogOutputDeviceInterface device = createAnalogOutputDevice(key, pin_info);
  deviceOpened(device);
  
  return device;
}

default AnalogInputDeviceInterface provisionAnalogInputDevice(int adcNumber) throws RuntimeIOException {
  PinInfo pin_info = getBoardPinInfo().getByAdcNumber(adcNumber);
  if (pin_info == null || ! pin_info.isSupported(DeviceMode.ANALOG_INPUT)) {
    throw new InvalidModeException("Invalid mode (analog input) for adc " + adcNumber);
  }
  
  String key = createPinKey(pin_info);
  
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  
  AnalogInputDeviceInterface device = createAnalogInputDevice(key, pin_info);
  deviceOpened(device);
  
  return device;
}

default GpioDigitalInputDeviceInterface provisionDigitalInputDevice(int gpio, GpioPullUpDown pud,
    GpioEventTrigger trigger) throws RuntimeIOException {
  PinInfo pin_info = getBoardPinInfo().getByGpioNumber(gpio);
  if (pin_info == null || !pin_info.isSupported(DeviceMode.DIGITAL_INPUT)) {
    throw new InvalidModeException("Invalid mode (digital input) for GPIO " + gpio);
  }
  String key = createPinKey(pin_info);
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  GpioDigitalInputDeviceInterface device = createDigitalInputDevice(key, pin_info, pud, trigger);
  deviceOpened(device);
  return device;
}
 

default GpioDigitalOutputDeviceInterface provisionDigitalOutputDevice(int gpio, boolean initialValue)
    throws RuntimeIOException {
  PinInfo pin_info = getBoardPinInfo().getByGpioNumber(gpio);
  if (pin_info == null || ! pin_info.isSupported(DeviceMode.DIGITAL_OUTPUT)) {
    throw new InvalidModeException("Invalid mode (digital output) for GPIO " + gpio);
  }
  String key = createPinKey(pin_info);
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  GpioDigitalOutputDeviceInterface device = createDigitalOutputDevice(key, pin_info, initialValue);
  deviceOpened(device);
  return device;
}
 

@Override
public AnalogInputDeviceInterface provisionAnalogInputDevice(int gpio) {
  // Special case - The Arduino can switch between digital and analog input hence use of gpio rather than adc
  PinInfo pin_info = getBoardPinInfo().getByGpioNumber(gpio);
  if (pin_info == null || ! pin_info.isSupported(DeviceMode.ANALOG_INPUT)) {
    throw new InvalidModeException("Invalid mode (analog input) for GPIO " + gpio);
  }
  
  String key = createPinKey(pin_info);
  
  // Check if this pin is already provisioned
  if (isDeviceOpened(key)) {
    throw new DeviceAlreadyOpenedException("Device " + key + " is already in use");
  }
  
  AnalogInputDeviceInterface device = createAnalogInputDevice(key, pin_info);
  deviceOpened(device);
  
  return device;
}