SensorData Struct Reference

Generic sensor data structure. More...

#include <ISensor.h>

Public Member Functions
	SensorData ()
	Construct a new SensorData with default values.
bool	toJSON (char *buffer, size_t bufferSize) const
	Convert sensor data to JSON string for publishing.

Public Attributes
uint16_t	aux1
	Auxiliary numeric field 1.
uint16_t	aux2
	Auxiliary numeric field 2.
bool	flag1
	Generic boolean flag (e.g., motionDetected, occupied, inRange).
bool	flag2
	Spare boolean flag for future use.
bool	hasNewData
	Flag indicating if this record contains new data.
uint16_t	primary
	Main numeric value (count, distance, faceNumber, ...).
uint16_t	secondary
	Secondary numeric value (score, quality, ...).
char	sensorType [16]
	Type of sensor ("PIR", "Ultrasonic", etc.).
time_t	timestamp
	When the data was captured (Unix time).

Detailed Description

Generic sensor data structure.

This structure is intentionally generic so different sensor types (PIR, ultrasonic, gesture, etc.) can share the same layout. The meaning of each numeric/boolean field is defined by the sensorType string.

Examples:

• PIR: hasNewData=true when motion edge detected; primary/secondary unused.
• GestureFace: primary=faceNumber, secondary=faceScore, aux1=gestureType, aux2=gestureScore.
• Ultrasonic: primary=distance (cm), secondary=signal quality, etc.

Uses only POD types and fixed-size char[] to avoid heap use.

Definition at line 23 of file ISensor.h.

Constructor & Destructor Documentation

SensorData()

SensorData::SensorData ( )

inline

Construct a new SensorData with default values.

Definition at line 54 of file ISensor.h.

References aux1, aux2, flag1, flag2, hasNewData, primary, secondary, sensorType, and timestamp.

Member Function Documentation

toJSON()

bool SensorData::toJSON ( char * buffer, size_t bufferSize ) const

inline

Convert sensor data to JSON string for publishing.

Parameters

buffer	Character buffer to write JSON into
bufferSize	Size of the buffer

Returns

true if JSON was created successfully

Definition at line 156 of file ISensor.h.

References aux1, aux2, flag1, flag2, primary, secondary, sensorType, and timestamp.

Member Data Documentation

aux1

uint16_t SensorData::aux1

Auxiliary numeric field 1.

Definition at line 40 of file ISensor.h.

Referenced by SensorData(), and toJSON().

aux2

uint16_t SensorData::aux2

Auxiliary numeric field 2.

Definition at line 43 of file ISensor.h.

Referenced by SensorData(), and toJSON().

flag1

bool SensorData::flag1

Generic boolean flag (e.g., motionDetected, occupied, inRange).

Definition at line 46 of file ISensor.h.

Referenced by SensorData(), and toJSON().

flag2

bool SensorData::flag2

Spare boolean flag for future use.

Definition at line 49 of file ISensor.h.

Referenced by SensorData(), and toJSON().

hasNewData

bool SensorData::hasNewData

Flag indicating if this record contains new data.

Definition at line 31 of file ISensor.h.

Referenced by SensorData().

primary

uint16_t SensorData::primary

Main numeric value (count, distance, faceNumber, ...).

Definition at line 34 of file ISensor.h.

Referenced by SensorData(), and toJSON().

secondary

uint16_t SensorData::secondary

Secondary numeric value (score, quality, ...).

Definition at line 37 of file ISensor.h.

Referenced by SensorData(), and toJSON().

sensorType

char SensorData::sensorType[16]

Type of sensor ("PIR", "Ultrasonic", etc.).

Definition at line 28 of file ISensor.h.

Referenced by SensorData(), and toJSON().

timestamp

time_t SensorData::timestamp

When the data was captured (Unix time).

Definition at line 25 of file ISensor.h.

Referenced by SensorData(), and toJSON().

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

• src/ISensor.h