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esp-nimble-cpp/md__bluetooth_5_features.html

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Release v1.4.0
2022-07-31 19:38:16 +02:00
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&#160;<span id="projectnumber">1.4.1</span>
Release v1.4.0
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deploy: afdeff7871ef2f627d5ef8638e057a10a4c4cf16
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<div class="textblock"><h1><a class="anchor" id="autotoc_md38"></a>
Release v1.4.0
2022-07-31 19:38:16 +02:00
About extended advertising</h1>
<p>Extended advertising allows for much more capability and flexibility.</p>
<ul>
<li>Allows for 251 bytes of advertisement data and up to 1650 bytes when chained (configuration dependant) vs 31.</li>
<li>New PHY's (physical layers) that allow for faster data rate (2M PHY) or long range/slower data rates (CODED PHY) as well as the original 1M PHY.</li>
<li>New periodic advertising, allowing the scanning device to sync with the advertisements of a beacon. This allows for the scanning device to sleep or perform other tasks before the next expected advertisement is sent, preserving cpu cycles and power (To be implemented). <br />
<br />
</li>
</ul>
deploy: afdeff7871ef2f627d5ef8638e057a10a4c4cf16
2022-10-30 18:19:11 +01:00
<h1><a class="anchor" id="autotoc_md39"></a>
Release v1.4.0
2022-07-31 19:38:16 +02:00
Enabling extended advertising</h1>
<p>Extended advertising is supported when enabled with the config option <code>CONFIG_BT_NIMBLE_EXT_ADV</code> set to a value of 1. This is done in menuconfig under <code>Component config &gt; Bluetooth &gt; NimBLE options &gt; Enable extended advertising</code>, or set in <code><a class="el" href="nimconfig_8h.html">nimconfig.h</a></code> for Arduino, or in <code>build_flags</code> in PlatformIO.</p>
<p>When enabled the following will occur:</p><ul>
<li><code><a class="el" href="class_nim_b_l_e_scan.html#a21b1e27816717b77533755f31dfaa820" title="Start scanning.">NimBLEScan::start</a></code> method will scan on both the 1M PHY and the coded PHY standards automatically.</li>
<li><code><a class="el" href="class_nim_b_l_e_client.html#ae9b3e8a9b47c7eaad040b485bda958a1" title="Connect to an advertising device.">NimBLEClient::connect</a></code> will use the primary PHY the device is listening on, unless specified (see below).</li>
<li><code><a class="el" href="class_nim_b_l_e_client.html#a3ab0a864d8fc7f91ea27f459e2c76b9e" title="Set the PHY types to use when connecting to a server.">NimBLEClient::setConnectPhy</a></code> becomes available to specify the PHY's to connect with (default is all).</li>
<li><code><a class="el" href="class_nim_b_l_e_advertising.html" title="Perform and manage BLE advertising.">NimBLEAdvertising</a></code> is no longer available for use and is replaced by <code><a class="el" href="class_nim_b_l_e_ext_advertising.html" title="Extended advertising class.">NimBLEExtAdvertising</a></code>. <code><a class="el" href="class_nim_b_l_e_device.html#aa994b01b2b5bb9f677f3cffb2f05d140" title="Get the instance of the advertising object.">NimBLEDevice::getAdvertising</a></code> will now return an instance of <code><a class="el" href="class_nim_b_l_e_ext_advertising.html" title="Extended advertising class.">NimBLEExtAdvertising</a></code>.</li>
<li><code><a class="el" href="class_nim_b_l_e_advertisement_data.html" title="Advertisement data set by the programmer to be published by the BLE server.">NimBLEAdvertisementData</a></code> is no longer available for use and is replaced by <code><a class="el" href="class_nim_b_l_e_ext_advertisement.html" title="Extended advertisement data.">NimBLEExtAdvertisement</a></code>. This new class is where everything about the advertisement is configured, including the advertisement intervals and advertisement ended callback. </li>
</ul>
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