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wifiiot_i2c_ex-h.md 6.49 KB

# wifiiot\_i2c\_ex.h<a name="ZH-CN_TOPIC_0000001054476497"></a>

## **Overview**<a name="section546141968090254"></a>

**Related Modules:**

[Wifiiot](Wifiiot.md)

**Description:**

Declares the extended I2C interface functions.

These functions are used for I2C baud rate setting and device exception callback.

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section6931137090254"></a>

## Data Structures<a name="nested-classes"></a>

<a name="table120455103090254"></a>
<table><thead align="left"><tr id="row412950117090254"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p2114037150090254"><a name="p2114037150090254"></a><a name="p2114037150090254"></a>Data Structure Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p1845771333090254"><a name="p1845771333090254"></a><a name="p1845771333090254"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row522704749090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p525403582090254"><a name="p525403582090254"></a><a name="p525403582090254"></a><a href="WifiIotI2cFunc.md">WifiIotI2cFunc</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1178357067090254"><a name="p1178357067090254"></a><a name="p1178357067090254"></a>Defines I2C callbacks. </p>
</td>
</tr>
</tbody>
</table>

## Typedefs<a name="typedef-members"></a>

<a name="table752362859090254"></a>
<table><thead align="left"><tr id="row1851669680090254"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1462128290090254"><a name="p1462128290090254"></a><a name="p1462128290090254"></a>Typedef Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p2129263178090254"><a name="p2129263178090254"></a><a name="p2129263178090254"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row606782986090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1901653248090254"><a name="p1901653248090254"></a><a name="p1901653248090254"></a><a href="Wifiiot.md#ga1176c2c06eca906f3e662027df156109">I2CResetFunc</a>) (void)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p110730136090254"><a name="p110730136090254"></a><a name="p110730136090254"></a>typedef void(*&nbsp;</p>
<p id="p1904008099090254"><a name="p1904008099090254"></a><a name="p1904008099090254"></a>Indicates the callback invoked when a device exception occurs. </p>
</td>
</tr>
<tr id="row1633772608090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1002725206090254"><a name="p1002725206090254"></a><a name="p1002725206090254"></a><a href="Wifiiot.md#ga1f0c8fe1deb1cf1fc8b19d69c2fca729">I2cPrepareFunc</a>) (void)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p607876226090254"><a name="p607876226090254"></a><a name="p607876226090254"></a>typedef void(*&nbsp;</p>
<p id="p1328378452090254"><a name="p1328378452090254"></a><a name="p1328378452090254"></a>Indicates the callback invoked for device preparation. </p>
</td>
</tr>
<tr id="row1451252445090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p883772090090254"><a name="p883772090090254"></a><a name="p883772090090254"></a><a href="Wifiiot.md#ga16779c755404f2ec8543452268a9fb3b">I2cRestoreFunc</a>) (void)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p663719268090254"><a name="p663719268090254"></a><a name="p663719268090254"></a>typedef void(*&nbsp;</p>
<p id="p1979542557090254"><a name="p1979542557090254"></a><a name="p1979542557090254"></a>Indicates the callback invoked for device recovery. </p>
</td>
</tr>
</tbody>
</table>

## Functions<a name="func-members"></a>

<a name="table1472389815090254"></a>
<table><thead align="left"><tr id="row1331520197090254"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1014737649090254"><a name="p1014737649090254"></a><a name="p1014737649090254"></a>Function Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p42802180090254"><a name="p42802180090254"></a><a name="p42802180090254"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1067040578090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p908694942090254"><a name="p908694942090254"></a><a name="p908694942090254"></a><a href="Wifiiot.md#gae4c60ea6732bbee9f779540cb431fe85">I2cWriteread</a> (<a href="Wifiiot.md#gaeeb58e02e3783d02e1ed4bad313cc0b8">WifiIotI2cIdx</a> id, unsigned short deviceAddr, const <a href="WifiIotI2cData.md">WifiIotI2cData</a> *i2cData)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1691496564090254"><a name="p1691496564090254"></a><a name="p1691496564090254"></a>unsigned int&nbsp;</p>
<p id="p1346621255090254"><a name="p1346621255090254"></a><a name="p1346621255090254"></a>Sends data to and receives data responses from an I2C device. </p>
</td>
</tr>
<tr id="row1000219078090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p594145585090254"><a name="p594145585090254"></a><a name="p594145585090254"></a><a href="Wifiiot.md#ga76d3fad576fe209eedb203bc61ad4f6b">I2cRegisterResetBusFunc</a> (<a href="Wifiiot.md#gaeeb58e02e3783d02e1ed4bad313cc0b8">WifiIotI2cIdx</a> id, <a href="WifiIotI2cFunc.md">WifiIotI2cFunc</a> pfn)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p2136536298090254"><a name="p2136536298090254"></a><a name="p2136536298090254"></a>void&nbsp;</p>
<p id="p126479557090254"><a name="p126479557090254"></a><a name="p126479557090254"></a>Registers an I2C callback. </p>
</td>
</tr>
<tr id="row559568445090254"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p425917828090254"><a name="p425917828090254"></a><a name="p425917828090254"></a><a href="Wifiiot.md#gaf4962dc9dd012c125294fe5683955454">I2cSetBaudrate</a> (<a href="Wifiiot.md#gaeeb58e02e3783d02e1ed4bad313cc0b8">WifiIotI2cIdx</a> id, unsigned int baudrate)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1470377029090254"><a name="p1470377029090254"></a><a name="p1470377029090254"></a>unsigned int&nbsp;</p>
<p id="p2026667778090254"><a name="p2026667778090254"></a><a name="p2026667778090254"></a>Sets the baud rate for an I2C device. </p>
</td>
</tr>
</tbody>
</table>

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提交于 2020-09-08 10:08 . add OpenHarmony 1.0 baseline

wifiiot_i2c_ex.h

Overview

Related Modules:

Description:

Declares the extended I2C interface functions.

These functions are used for I2C baud rate setting and device exception callback.

Since:

1.0

Version:

1.0

Summary

Data Structures

Data Structure Name	Description
WifiIotI2cFunc	Defines I2C callbacks.

Typedefs

Typedef Name

Description

I2CResetFunc) (void)

typedef void(*

Indicates the callback invoked when a device exception occurs.

I2cPrepareFunc) (void)

typedef void(*

Indicates the callback invoked for device preparation.

I2cRestoreFunc) (void)

typedef void(*

Indicates the callback invoked for device recovery.

Functions

Function Name

Description

I2cWriteread (WifiIotI2cIdx id, unsigned short deviceAddr, const WifiIotI2cData *i2cData)

unsigned int

Sends data to and receives data responses from an I2C device.

I2cRegisterResetBusFunc (WifiIotI2cIdx id, WifiIotI2cFunc pfn)

void

Registers an I2C callback.

I2cSetBaudrate (WifiIotI2cIdx id, unsigned int baudrate)

unsigned int

Sets the baud rate for an I2C device.

1

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