MqttObj connecting hardware GPIO pins to an Mqtt Broker. This class defaults the pin to an Input state. More...

#include <mqtt.h>

Public Member Functions
	mqtt_IO_Input (PinIO ioPin, const char topic, Client client=NULL, uint16_t flags=0)
	Constructor for a standalone mqtt_IO_Input object.

	mqtt_IO_Input (mqtt_leaf &parent, PinIO ioPin, const char topic, Client client=NULL, uint16_t flags=0)
	Constructor for a mqtt_IO_Input object that has a parent.

mqtt_IO &	operator= (bool val)
	Assignment operator for mqtt_IO. Assigns the value to the hardware GPIO, then performs any post assignment operations.

Public Member Functions inherited from MQTT::mqtt_IO
	mqtt_IO (PinIO ioPin, const char topic, Client mClient=NULL, uint16_t flags=(eObj_Flag_PubOnWrite\|eObj_Flag_Subscribe\|eObj_Flag_Sub_NoLocal))
	Constructor for a standalone mqtt_IO object.

	mqtt_IO (mqtt_leaf &parent, PinIO ioPin, const char topic, Client mClient=NULL, uint16_t flags=(eObj_Flag_PubOnWrite\|eObj_Flag_Subscribe\|eObj_Flag_Sub_NoLocal))
	Constructor for a mqtt_IO object that has a parent.

virtual void	SetFlags (uint16_t newFlags) override
	additional behavioral flags for this object

virtual void	ClearFlags (uint16_t delFlags) override
	behavioral flags from this object

int	SetFixedDirection (int direction)
	Set a fixed direction for the GPIO pin.

mqtt_IO &	operator= (bool val)
	Assignment operator for mqtt_IO. Assigns the value to the hardware GPIO, then performs any post assignment operations.

	operator bool ()
	Boolean conversion operator for mqtt_IO. Returns the current state of the underlying GPIO.

bool	operator! ()
	Boolean Not operator for mqtt_IO. Returns the negation of the current state of the underlying GPIO.

virtual ValueTestResult	TestOrSetValue (ParsedJsonDataSet &pjs, bool setVal) override
	whether the current index of a JSON dataset is valid for this object, or assign the value at the current index of the dataset to this object.

virtual int	SubscribeEvent (int mqttFd, PacketInfo::Msg *msg) override
	Handle a message sent by the Broker triggered by this object's Subscription.

virtual int	RenderToBuffer (eObj_Serialize_t form, uint8_t *buf, int buflen) override
	Render this object to an output buffer.

virtual int	RenderToFd (eObj_Serialize_t form, int fd) override
	Render this object to an output socket.

Public Member Functions inherited from MQTT::mqtt_leaf
	~mqtt_leaf ()
	~mqtt_leaf Destructor for base mqtt_leaf

void	RemoveFromTree ()
	Remove this object from it's parent tree.

bool	NameMatch (const char *cp)
	Determine whether a given name matches this object.

virtual int	GetPubTopicName (NBString &s)
	Get the Topic Name this object Publishes to.

virtual int	GetSubTopicFilter (NBString &s)
	Get the Subscription Topic Filter this object Subscribes to.

virtual int	GetRenderLength (eObj_Serialize_t form=eObj_Serialize_CURRENT_FORM)
	Get the number of bytes used to serialize this object in a particular format.

int	Publish (int waitForCompletion=-1)
	Publishes the current MQTT object, optionally waiting for completion.

void	SetPublishInterval (uint32_t intervalPeriodTicks)
	Sets or clears an automatic publishing interval for this MQTT object.

virtual void	SetSerializationForm (eObj_Serialize_t form)
	Set the default serialization format for this object.

eObj_Serialize_t	GetSerializationForm ()
	Get the default serialization format for this object.

uint16_t	GetFlags ()
	Get the behavioral flags set for this object.

int	getPriority ()
	Get the message priority for this object.

Additional Inherited Members
Public Types inherited from MQTT::mqtt_leaf
enum	eObj_State_t
	Mqtt Object Publication/Subscription States.

Static Public Member Functions inherited from MQTT::mqtt_IO
static void	PinNotify (int port_num, int pin, void *ctx)
	Static notification function for pin state changes.

Static Public Member Functions inherited from MQTT::mqtt_leaf
static int	MqttRxPublish (Client mClient, int mqttFd, PacketInfo::Msg msg, void *ctx)
	Static message handler for Publish messages received by the registered Client.

Protected Member Functions inherited from MQTT::mqtt_IO
virtual int	ParseFd (int mqttFd) override
	the data from a file descriptor according to this object's current default serialization method and assign the value.

Protected Member Functions inherited from MQTT::mqtt_leaf
	mqtt_leaf (const char topic, Client mClient, uint16_t flags=(eObj_Flag_PubOnWrite\|eObj_Flag_Subscribe\|eObj_Flag_Sub_NoLocal))
	Constructor for mqtt_leaf objects.

	mqtt_leaf (mqtt_leaf &parent, const char topic, Client mClient, uint16_t flags=(eObj_Flag_PubOnWrite\|eObj_Flag_Subscribe\|eObj_Flag_Sub_NoLocal))
	Constructor for mqtt_leaf objects.

virtual mqtt_leaf *	GetChildren ()
	Get the first child of this object.

virtual mqtt_leaf *	AddChild (mqtt_leaf *child)
	Add an MqttObj as a child to this object.

virtual mqtt_leaf *	RemoveFirstChild ()
	Remove the first child from this object.

void	ForEachLeaf (LeafCallBack p, void pd)
	Call a function on each element of the MqttObj tree with this object as the root.

void	RootParse (ParsedJsonDataSet &pjs)
	Assign to this object tree from a JSON dataset.

bool	MatchId (ParsedJsonDataSet &pjs)
	Determine whether the JSON dataset's current index matches this object's name.

int	QueuePublish ()
	Queue this object to be Published via the registered Client.

int	QueueSubscribe ()
	Queue this object to be Subscribed via the registered Client.

int	QueueUnsubscribe ()
	Queue this object to be Unsubscribed via the registered Client.

int	Assign ()
	Perform post assignemnt operations.

uint8_t	PubState ()
	Get the Publish state.

uint8_t	SubState ()
	Get the Subscribe state of this object.

virtual void	SetPubState (uint8_t newState)
	Set the Publish state.

virtual void	SetSubState (uint8_t newState)
	Set the Subscribe state.

int	HandleSubAck (int mqttFd, PacketInfo::Msg *msg)
	Handle a Subscribe Acknowledge message from the broker for our Subscribe request.

int	HandleUnsubAck (int mqttFd, PacketInfo::Msg *msg)
	Handle an Unsubscribe Acknowledge message from the broker for our Unsubscribe request.

int	HandlePubAck (int mqttFd, PacketInfo::Msg *msg)
	Handle an Publish Acknowledge message from the broker for our Publish request.

Protected Attributes inherited from MQTT::mqtt_leaf
NBInterpolatedString	topicName
	Topic name or additional branch.

eObj_Serialize_t	publishForm
	Default serialization form.

uint16_t	mFlags
	Behavioral flags.

Detailed Description

MqttObj connecting hardware GPIO pins to an Mqtt Broker. This class defaults the pin to an Input state.

Constructor & Destructor Documentation

◆ mqtt_IO_Input() [1/2]

MQTT::mqtt_IO_Input::mqtt_IO_Input	(	PinIO	ioPin,
		const char *	topic,
		Client *	client = NULL,
		uint16_t	flags = 0 )

inline

Constructor for a standalone mqtt_IO_Input object.

Parameters

ioPin	GPIO pin to control/report
*topic	Mqtt Topic Name to use for Publish/Subcribe.
*client	Pointer to Client to register with. If NULL, it will be registered with the first created Client.
flags	Behavioral flags to set on the created object

◆ mqtt_IO_Input() [2/2]

MQTT::mqtt_IO_Input::mqtt_IO_Input	(	mqtt_leaf &	parent,
		PinIO	ioPin,
		const char *	topic,
		Client *	client = NULL,
		uint16_t	flags = 0 )

inline

Constructor for a mqtt_IO_Input object that has a parent.

Parameters

&parent	Reference to parent MqttObj
ioPin	GPIO pin to control/report
*topic	Mqtt Topic Name to use for Publish/Subcribe.
*client	Pointer to Client to register with. If NULL, it will be registered with the first created Client.
flags	Behavioral flags to set on the created object

Member Function Documentation

◆ operator=()

mqtt_IO & MQTT::mqtt_IO::operator= ( bool val )

Assignment operator for mqtt_IO. Assigns the value to the hardware GPIO, then performs any post assignment operations.

Parameters

val	The value to assign to the pin.

Returns: A reference to the object being assigned to.

The documentation for this class was generated from the following file:

mqtt.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ mqtt_IO_Input() [1/2]

◆ mqtt_IO_Input() [2/2]

Member Function Documentation

◆ operator=()