# TickTimer

TWELITE NET 内部利用の 16Mhz ハードウェアカウンタ。タイムアウト時間は [sToCoNet\_AppContext](/twelite-net-api-ref/gou-zao-ti/stoconet_appcontext.md).u16TickHz により計算されます。

{% hint style="danger" %}
TWELITE NET では内部的に使用されるため、ユーザが停止・再設定など変更を行ってはなりません。
{% endhint %}

{% hint style="info" %}
uint32 u32AHI\_TickTimerRead() によりカウント値を読むことで、ごく短い時間計測に利用できます。

```c
uint32 s, e, d, cyc;

// 1ms = 16000 count
cyc = 1000 / sToCoNet_AppContext.u16TickHz;
cyc *= 16000;

// check the process time
s = u32AHI_TickTimerRead();
.. some process ..
e = u32AHI_TickTimerRead();

// calculate the time
if (e > s) {
    d = e - s;
} else {
    d = 64000 - e + s;
}
d /= 16; // now `d' represents micro sec.
```

{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://sdk.twelite.info/hw-api-ref/perifuraru/ticktimer.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.