Fan Control Application Override APIs#

To override any of the following hooks, declare the corresponding *Impl() method in CustomerAppTask.h and implement it in CustomerAppTask.cpp. Ensure that the method signature matches the declaration in autogen/AppTaskImpl.h.

AppTask#


Override	Public API	Default behavior
`AppInitImpl`	`AppInit`	Registers the button callback, initializes fan control, and updates the display.
`InitFanControlImpl`	`InitFanControl`	Installs Fan Control delegates, initializes the LED, and applies the initial attribute state.
`HandleStepImpl`	`HandleStep`	Handles a Fan Control Step command by updating speed or percentage settings.
`ButtonEventHandlerImpl`	`ButtonEventHandler`	Routes function button events to the base application handler.
`FanUiUpdateEventHandlerImpl`	`FanUiUpdateEventHandler`	Updates the fan LED and, when enabled, the display.
`HandleFanModeChangeImpl`	`HandleFanModeChange`	Synchronizes speed and percentage settings after a change to FanMode.
`DeriveFanModeFromPercentImpl`	`DeriveFanModeFromPercent`	Maps PercentSetting to Off, Low, Medium, or High fan mode.
`HandlePercentSettingChangeImpl`	`HandlePercentSettingChange`	Updates PercentCurrent after PercentSetting changes.
`HandleSpeedSettingChangeImpl`	`HandleSpeedSettingChange`	Updates SpeedCurrent after SpeedSetting changes.
`DMPostAttributeChangeCallbackImpl`	`DMPostAttributeChangeCallback`	Applies changes to the Fan Control PercentSetting, SpeedSetting, and FanMode attributes and logs Identify changes.