---
title: hi_slave_dev
description: "定义从信号设备号。"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/others/ispdevug/ispdevapi_0067.html
sourcePath: /source/zh/canncommercial/900/others/ispdevug/ispdevapi_0067.html
indexId: 8abbafda6ac7f898e1ef866414d2e0d010d2984a40940f93dd50034d3372aadf65
---
# hi_slave_dev

#### 说明

定义从信号设备号。


#### 定义

```
typedef
hi_s32
hi_slave_dev;
```