---
title: TimerEvent
framework: kernel
role: pseudoSymbol
path: kernel/ioaudiodevice/timerevent
---

# TimerEvent

Generic timer event callback for IOAudioDevice timer targets

## Declaration

```occ
typedef void ( *TimerEvent)(
   OSObject *target,
   IOAudioDevice *audioDevice);
```

## Parameters

- `target`: The target of the timer event - passed in when the timer event was registered
- `audioDevice`: The IOAudioDevice sending the event

## Overview

Overview TimerEvent callback function takes two arguments; the target of the timer event and the IOAudioDevice sending the event.