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esp-nimble-cpp/class_nim_b_l_e_characteristic_callbacks.html
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<p>Callbacks that can be associated with a BLE characteristic to inform of events.
<a href="class_nim_b_l_e_characteristic_callbacks.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="_nim_b_l_e_characteristic_8h_source.html">NimBLECharacteristic.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a120d3dade06fbc941a93edbdc0e4d830" id="r_a120d3dade06fbc941a93edbdc0e4d830"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_nim_b_l_e_characteristic_callbacks.html#a120d3dade06fbc941a93edbdc0e4d830">onRead</a> (<a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *pCharacteristic, <a class="el" href="class_nim_b_l_e_conn_info.html">NimBLEConnInfo</a> &amp;connInfo)</td></tr>
<tr class="memdesc:a120d3dade06fbc941a93edbdc0e4d830"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback function to support a read request. <br /></td></tr>
<tr class="separator:a120d3dade06fbc941a93edbdc0e4d830"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab4edbb758f0212fd190dedad6c9b8ec9" id="r_ab4edbb758f0212fd190dedad6c9b8ec9"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_nim_b_l_e_characteristic_callbacks.html#ab4edbb758f0212fd190dedad6c9b8ec9">onWrite</a> (<a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *pCharacteristic, <a class="el" href="class_nim_b_l_e_conn_info.html">NimBLEConnInfo</a> &amp;connInfo)</td></tr>
<tr class="memdesc:ab4edbb758f0212fd190dedad6c9b8ec9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback function to support a write request. <br /></td></tr>
<tr class="separator:ab4edbb758f0212fd190dedad6c9b8ec9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6f9b1f0f15492e3d47662e5e2ff0baee" id="r_a6f9b1f0f15492e3d47662e5e2ff0baee"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_nim_b_l_e_characteristic_callbacks.html#a6f9b1f0f15492e3d47662e5e2ff0baee">onStatus</a> (<a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *pCharacteristic, int code)</td></tr>
<tr class="memdesc:a6f9b1f0f15492e3d47662e5e2ff0baee"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback function to support a Notify/Indicate Status report. <br /></td></tr>
<tr class="separator:a6f9b1f0f15492e3d47662e5e2ff0baee"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a024951384bb777d7ee71bfd1d5eff185" id="r_a024951384bb777d7ee71bfd1d5eff185"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_nim_b_l_e_characteristic_callbacks.html#a024951384bb777d7ee71bfd1d5eff185">onSubscribe</a> (<a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *pCharacteristic, <a class="el" href="class_nim_b_l_e_conn_info.html">NimBLEConnInfo</a> &amp;connInfo, uint16_t subValue)</td></tr>
<tr class="memdesc:a024951384bb777d7ee71bfd1d5eff185"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback function called when a client changes subscription status. <br /></td></tr>
<tr class="separator:a024951384bb777d7ee71bfd1d5eff185"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Callbacks that can be associated with a BLE characteristic to inform of events. </p>
<p>When a server application creates a BLE characteristic, we may wish to be informed when there is either a read or write request to the characteristic's value. An application can register a sub-classed instance of this class and will be notified when such an event happens. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a120d3dade06fbc941a93edbdc0e4d830" name="a120d3dade06fbc941a93edbdc0e4d830"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a120d3dade06fbc941a93edbdc0e4d830">&#9670;&#160;</a></span>onRead()</h2>
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<td class="memname">void NimBLECharacteristicCallbacks::onRead </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *&#160;</td>
<td class="paramname"><em>pCharacteristic</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_conn_info.html">NimBLEConnInfo</a> &amp;&#160;</td>
<td class="paramname"><em>connInfo</em>&#160;</td>
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<td>)</td>
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<p>Callback function to support a read request. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">pCharacteristic</td><td>The characteristic that is the source of the event. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">connInfo</td><td>A reference to a <a class="el" href="class_nim_b_l_e_conn_info.html" title="Connection information.">NimBLEConnInfo</a> instance containing the peer info. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="a6f9b1f0f15492e3d47662e5e2ff0baee" name="a6f9b1f0f15492e3d47662e5e2ff0baee"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6f9b1f0f15492e3d47662e5e2ff0baee">&#9670;&#160;</a></span>onStatus()</h2>
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<td class="memname">void NimBLECharacteristicCallbacks::onStatus </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *&#160;</td>
<td class="paramname"><em>pCharacteristic</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>code</em>&#160;</td>
</tr>
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<td></td>
<td>)</td>
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<p>Callback function to support a Notify/Indicate Status report. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">pCharacteristic</td><td>The characteristic that is the source of the event. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">code</td><td>Status return code from the NimBLE stack.</td></tr>
</table>
</dd>
</dl>
<p>The status code for success is 0 for notifications and BLE_HS_EDONE for indications, any other value is an error. </p>
</div>
</div>
<a id="a024951384bb777d7ee71bfd1d5eff185" name="a024951384bb777d7ee71bfd1d5eff185"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a024951384bb777d7ee71bfd1d5eff185">&#9670;&#160;</a></span>onSubscribe()</h2>
<div class="memitem">
<div class="memproto">
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<td class="mlabels-left">
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<td class="memname">void NimBLECharacteristicCallbacks::onSubscribe </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *&#160;</td>
<td class="paramname"><em>pCharacteristic</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_conn_info.html">NimBLEConnInfo</a> &amp;&#160;</td>
<td class="paramname"><em>connInfo</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint16_t&#160;</td>
<td class="paramname"><em>subValue</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Callback function called when a client changes subscription status. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">pCharacteristic</td><td>The characteristic that is the source of the event. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">connInfo</td><td>A reference to a <a class="el" href="class_nim_b_l_e_conn_info.html" title="Connection information.">NimBLEConnInfo</a> instance containing the peer info. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">subValue</td><td>The subscription status:<ul>
<li>0 = Un-Subscribed</li>
<li>1 = Notifications</li>
<li>2 = Indications</li>
<li>3 = Notifications and Indications </li>
</ul>
</td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ab4edbb758f0212fd190dedad6c9b8ec9" name="ab4edbb758f0212fd190dedad6c9b8ec9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab4edbb758f0212fd190dedad6c9b8ec9">&#9670;&#160;</a></span>onWrite()</h2>
<div class="memitem">
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<td class="mlabels-left">
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<td class="memname">void NimBLECharacteristicCallbacks::onWrite </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_characteristic.html">NimBLECharacteristic</a> *&#160;</td>
<td class="paramname"><em>pCharacteristic</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="class_nim_b_l_e_conn_info.html">NimBLEConnInfo</a> &amp;&#160;</td>
<td class="paramname"><em>connInfo</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
</tr>
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</div><div class="memdoc">
<p>Callback function to support a write request. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">pCharacteristic</td><td>The characteristic that is the source of the event. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">connInfo</td><td>A reference to a <a class="el" href="class_nim_b_l_e_conn_info.html" title="Connection information.">NimBLEConnInfo</a> instance containing the peer info. </td></tr>
</table>
</dd>
</dl>
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