> For the complete documentation index, see [llms.txt](https://sdk.twelite.info/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk.twelite.info/en/twelite-net-api-ref/krubakku/cbtoconet_vhwevent.md).

# cbToCoNet\_vHwEvent()

## 解説

These are events such as hardware interrupts. This function is called after the interrupt handler `cbToCoNet_u8HwInt()` exits. Normal application processing in response to an interrupt is described within this callback function.

## Arguments

| Type     | Name            | Remark              |
| -------- | --------------- | ------------------- |
| `uint32` | `u32DeviceId`   | Interrupt source    |
| `uint32` | `u32ItemBitmap` | Interrupt parameter |

## Returns

None

## Sample code

```c
void cbToCoNet_vHwEvent(Uint32 u32DeviceId, uint32 u32ItemBitmap) {
    Switch (u32DeviceId) {
    case E_AHI_DEVICE_SYSCTRL: // DIO etc
        if (u32ItemBitmap & (1UL << 12) {
            ; // interrupt on DIO12
        }
        break;
    case E_AHI_DEVICE_TICK_TIMER: // TickTimer
        vPortSet_TrueAsLo(18, u32TickCount_ms & 0x400); // blink LED every sec.
        break;
    default:
        break;
}
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://sdk.twelite.info/en/twelite-net-api-ref/krubakku/cbtoconet_vhwevent.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.