m5::unit::light::Data Struct Reference

Measurement data group. More...

#include <unit_Light_data.hpp>

Public Member Functions
float	normalized () const
	Normalized brightness in 0..100 (%), where 0% = dark reference and 100% = bright reference.

Public Attributes
uint16_t	analog_raw {}
	Raw ADC value from the photoresistor path.
bool	digital {}
	Comparator threshold output (active level is board-specific; verify with calibration)
uint16_t	dark {0}
	ADC reading captured when the sensor was covered (dark reference)
uint16_t	bright {4095}
	ADC reading captured when the sensor was lit (bright reference)

Detailed Description

Measurement data group.

Member Function Documentation

normalized()

float m5::unit::light::Data::normalized ( ) const

inline

Normalized brightness in 0..100 (%), where 0% = dark reference and 100% = bright reference.

Returns

NaN only when dark == bright (cannot form a range)

Note

dark and bright are stored as the raw ADC values captured during calibration; their magnitudes do not imply polarity. On U021 the photoresistor circuit polarity is board-specific (some revisions yield higher ADC in the dark, others in the light) — normalized() handles either polarity and always maps dark to 0% and bright to 100%.