SchedulerEvent.ino

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#include <Scheduler.h>

// Check for SparkFun SAMD21 Breakout
#if defined(ARDUINO_ARCH_SAMD) && (USB_PID == 0x8D21)
#define Serial SerialUSB
#endif

class Event {
public:
  Event() : m_event(0) {}

  unsigned int wait()
  {
    await(m_event != 0);
    return (m_event);
  }

  void signal(unsigned int value)
  {
    await(m_event == 0);
    m_event = value;
    yield();
  }

  void clear()
  {
    m_event = 0;
  }

protected:
  volatile unsigned int m_event;
};

Event event;

void setup()
{
  Serial.begin(57600);
  while (!Serial);
  Serial.println(F("SchedulerEvent: started"));
  Scheduler.startLoop(eventHandler);
}

void loop()
{
  static unsigned int i = 1;
  Serial.print(millis());
  Serial.print(F(":loop::event="));
  Serial.println(i);
  delay(1000);
  event.signal(i);
  i += 1;
  if (i == 0) i = 1;
}

void eventHandler()
{
  unsigned int value = event.wait();
  Serial.print(millis());
  Serial.print(F(":eventHandler::event="));
  Serial.println(value);
  delay(200);
  event.clear();
}