Exemplo n.º 1
0
  @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;
      }
    }
  }
Exemplo n.º 2
0
  @Override
  public void shutdown() {

    // prevent reentrant invocation
    if (isShutdown()) return;

    // perform shutdown login in base
    super.shutdown();

    // if a monitor is running, then shut it down now
    if (monitor != null) {
      // shutdown monitoring thread
      monitor.shutdown();
      monitor = null;
    }
  }