#include <beagle/beagle_gpio.h>

const TInt KBeatTimeInSeconds = 4;

class LedHeartBeat

	{

public:

	inline LedHeartBeat();

	/*inline ~LedHeartBeat() { iTimer.Cancel(); }*/ // will it ever be destroyed?

	TInt DoCreate();

	static void Beat(TAny *aPtr);

private:

	NTimer iTimer;

	TBool iIsLedOn;

	};

LedHeartBeat::LedHeartBeat() :

	iTimer(Beat, this)

	{

TInt LedHeartBeat::DoCreate()

	TInt r = GPIO::SetPinDirection(KGPIO_LED0, GPIO::EOutput);

	if (r != KErrNone)

		Kern::Printf("LedHeartBeat: SetPinDirection for LED failed, r %d", r);

		}

	GPIO::SetPinMode(KGPIO_LED0, GPIO::EEnabled);

	GPIO::SetOutputState(KGPIO_LED0, GPIO::ELow);

	iTimer.OneShot(NKern::TimerTicks(KBeatTimeInSeconds * 1000));

	return r;

	}

void LedHeartBeat::Beat(TAny * aPtr)

	{

	LedHeartBeat* b = (LedHeartBeat*)aPtr;

	if(b->iIsLedOn)

		{

		GPIO::SetOutputState(KGPIO_LED0, GPIO::ELow);

		b->iIsLedOn = EFalse;

		GPIO::SetOutputState(KGPIO_LED0, GPIO::EHigh);

		b->iIsLedOn = ETrue;

	b->iTimer.Again(NKern::TimerTicks(KBeatTimeInSeconds * 1000));

	}

// the following macro is defined in led.mmp file..

#ifdef USER_BUTTON_ENTERS_CRASH_DEBUGGER

static void UserButtonIsr(TAny* aPtr)

	{

	//make sure the heartbeat led is OFF when we crash

	GPIO::SetOutputState(KGPIO_LED0, GPIO::ELow);

	Kern::Printf("User button pressed, entering crash debugger..\n");

	Kern::Fault("led.cpp", __LINE__);

TInt SetupUserButton()

	{

	TInt r = GPIO::BindInterrupt(KGPIO_UserButton, UserButtonIsr, NULL);

	if(r != KErrNone)

		{

		Kern::Printf("GPIO::BindInterrupt() failed for button %d, r=%d, (is in use?)",

		             KGPIO_UserButton, r);

		return r;

		}

	r = GPIO::SetInterruptTrigger(KGPIO_UserButton, GPIO::EEdgeRising);

	if(r == KErrNone)

		{

		r = GPIO::SetPinDirection(KGPIO_UserButton, GPIO::EInput);

		if(r == KErrNone)

			{

			GPIO::SetDebounceTime(KGPIO_UserButton, 500);

			GPIO::SetPinMode(KGPIO_UserButton, GPIO::EEnabled);

			r = GPIO::EnableInterrupt(KGPIO_UserButton);

			}

		}

	return r;

	}

#endif

	TInt r = KErrNoMemory;

	LedHeartBeat* beat = new LedHeartBeat;

	if(beat)

		r = beat->DoCreate();

		}

#ifdef USER_BUTTON_ENTERS_CRASH_DEBUGGER

	if(r == KErrNone)

		{

		r = SetupUserButton();

		}

#endif

	return r;