Tracks fan RPM plausibility and latches persistent fan faults. More...

#include <fault_monitor.h>

Public Member Functions
	FaultMonitor (const FaultMonitorConfig &config=kDefaultFaultMonitorConfig)
	Creates a fan fault monitor.

void	reset ()
	Clears counters and any latched fan fault.

FaultMonitorSnapshot	evaluate (uint8_t commandedPwmPercent, uint16_t measuredRpm, uint32_t nowMs)
	Evaluates fan RPM plausibility for the current PWM command.

Detailed Description

Tracks fan RPM plausibility and latches persistent fan faults.

The class watches for PWM command changes, waits for fan speed to settle, and then compares measured RPM against the interpolated fan curve. A latched fault clears only after enough consecutive plausible samples have been observed.

Constructor & Destructor Documentation

◆ FaultMonitor()

FaultMonitor::FaultMonitor ( const FaultMonitorConfig & config = kDefaultFaultMonitorConfig )

explicit

Creates a fan fault monitor.

Parameters

config Fault detection and recovery thresholds.

Member Function Documentation

◆ evaluate()

FaultMonitorSnapshot FaultMonitor::evaluate	(	uint8_t	commandedPwmPercent,
		uint16_t	measuredRpm,
		uint32_t	nowMs
	)

Evaluates fan RPM plausibility for the current PWM command.