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174
175<a name="androidWifiTitle"></a><h1>Wi-Fi</h1>
176
177
178
179<a name="toc"/>
180<div style="padding:10px">
181<a href="#androidWifiIntroduction">Introduction</a><br/>
182<a href="#androidWifiBuildingDriver">Building a Wi-Fi Library</a><br/>
183<a href="#androidWifiInterface">Interface</a><br/></div></font></div>
184
185<a name="androidWifiIntroduction"></a><h2>Introduction</h2>
186
187<p>Android uses wpa_supplicant as the platform interface to the Wi-Fi device. Your Wi-Fi driver must be compatible with the standard wpa_supplicant in addition to extensions added to the supplicant (specifically, the "DRIVER" commands described in <code>wifi.h/wifi_command()</code>).</p>
188
189
190<a name="androidWifiBuildingDriver"></a><h2>Building a Wi-Fi Library</h2>
191
192<p>To create a Wi-Fi driver for Android:</p>
193<p><ul>
194<li>create a shared library that implements the interface defined in <code>include/hardware/wifi.h</code>, which also defines the Wi-Fi supplicant.</li>
195<li>Follow the instructions posted at <a href="http://hostap.epitest.fi/wpa_supplicant/">http://hostap.epitest.fi/wpa_supplicant/</a>.</li>
196<li>Place your driver in <code>libs/hardware/wifi/</code></li>
197<li>Test your driver using the command line <code>wpa_cli</code> utilities.</li>
198</ul>
199
200<p>You can find the default implementation in <code>libs/hardware/wifi/wifi.c</code>. If you need to make changes, create a new source file similar to <code>wifi.c</code>, for example, <code>wifi_mywifi.c</code>. </p>
201
202<p>Update the default <code>Android.mk</code> file (<code>libs/hardware/wifi/Android.mk</code>) as shown below.</p>
203<pre class="prettify">
204LOCAL_SHARED_LIBRARIES += libnetutils
205
206ifeq ($(TARGET_DEVICE),acme)
207LOCAL_SRC_FILES += wifi/wifi_mywifi.c
208else
209LOCAL_SRC_FILES += wifi/wifi.c
210endif
211</pre>
212
213
214<a name="androidWifiInterface"></a><h2>Interface</h2>
215
216
217
218<p class="note"><strong>Note</strong>: This document relies on some Doxygen-generated content that appears in an iFrame below. To return to the Doxygen default content for this page, <a href="wifi.html">click here</a>.</p>
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