PIRSensor Class Reference

PIR (Passive Infrared) Motion Sensor Implementation. More...

#include <PIRSensor.h>

Inheritance diagram for PIRSensor:

Public Member Functions
SensorData	getData () const override
	Get latest sensor reading.
const char *	getSensorType () const override
	Get sensor type identifier.
bool	isReady () const override
	Check if sensor is ready.
bool	loop () override
	Poll the PIR sensor for motion detection.
void	onSleep () override
	Prepare sensor for deep sleep: detach ISR and power down.
bool	onWake () override
	Wake sensor from deep sleep: power up and re-attach ISR.
void	reset () override
	Reset sensor state.
bool	setup () override
	Initialize the PIR sensor.
bool	usesInterrupt () const override
	This sensor uses a hardware interrupt for motion events.
Public Member Functions inherited from ISensor
virtual bool	initializeHardware ()
	Initialize underlying hardware after power-on.
virtual bool	isHealthy () const
	Health check for the sensor.
virtual int	lastErrorCode () const
	Last sensor-specific error code (if any).
virtual	~ISensor ()

Static Public Member Functions
static PIRSensor &	instance ()
	Get singleton instance.

Detailed Description

PIR (Passive Infrared) Motion Sensor Implementation.

This is a placeholder/template for future PIR sensor implementation. PIR sensors detect motion by measuring infrared light radiating from objects.

Typical usage:

• Motion detection for occupancy tracking
• Presence detection for people counting
• Security/intrusion detection

Hardware Requirements:

• PIR sensor module (e.g., HC-SR501, AM312)
• Digital input pin for sensor signal
• Power supply (typically 3.3V or 5V)

Definition at line 26 of file PIRSensor.h.

Member Function Documentation

getData()

SensorData PIRSensor::getData ( ) const

inlineoverridevirtual

Get latest sensor reading.

Returns

SensorData with motion detection info

Implements ISensor.

Definition at line 94 of file PIRSensor.h.

getSensorType()

const char * PIRSensor::getSensorType ( ) const

inlineoverridevirtual

Get sensor type identifier.

Implements ISensor.

Definition at line 101 of file PIRSensor.h.

instance()

PIRSensor & PIRSensor::instance ( )

inlinestatic

Get singleton instance.

Definition at line 31 of file PIRSensor.h.

Referenced by SensorFactory::createSensor().

isReady()

bool PIRSensor::isReady ( ) const

inlineoverridevirtual

Check if sensor is ready.

Implements ISensor.

Definition at line 108 of file PIRSensor.h.

loop()

bool PIRSensor::loop ( )

inlineoverridevirtual

Poll the PIR sensor for motion detection.

Returns

true if new motion detected

Note

Currently interrupt-driven only. Returns false in polling mode. Motion is detected via a hardware interrupt (pirISR) which sets an internal flag. This method returns true once per interrupt and clears the flag.

Implements ISensor.

Definition at line 67 of file PIRSensor.h.

onSleep()

void PIRSensor::onSleep ( )

inlineoverridevirtual

Prepare sensor for deep sleep: detach ISR and power down.

Reimplemented from ISensor.

Definition at line 131 of file PIRSensor.h.

References disableModule, intPin, and ledPower.

onWake()

bool PIRSensor::onWake ( )

inlineoverridevirtual

Wake sensor from deep sleep: power up and re-attach ISR.

Reimplemented from ISensor.

Definition at line 146 of file PIRSensor.h.

References disableModule, intPin, and ledPower.

reset()

void PIRSensor::reset ( )

inlineoverridevirtual

Reset sensor state.

Implements ISensor.

Definition at line 115 of file PIRSensor.h.

Referenced by setup().

setup()

bool PIRSensor::setup ( )

inlineoverridevirtual

Initialize the PIR sensor.

Returns

true if initialization successful

Implements ISensor.

Definition at line 40 of file PIRSensor.h.

References disableModule, intPin, ledPower, and reset().

usesInterrupt()

bool PIRSensor::usesInterrupt ( ) const

inlineoverridevirtual

This sensor uses a hardware interrupt for motion events.

Reimplemented from ISensor.

Definition at line 126 of file PIRSensor.h.

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

• src/PIRSensor.h
• src/PIRSensor.cpp