| Dan Morrill | 3cd199f | 2009-11-06 14:04:16 -0800 | [diff] [blame] | 1 | page.title=GPS |
| 2 | pdk.version=1.0 |
| 3 | doc.type=porting |
| 4 | @jd:body |
| 5 | |
| 6 | <div id="qv-wrapper"> |
| 7 | <div id="qv"> |
| 8 | <h2>In this document</h2> |
| 9 | <a name="toc"/> |
| 10 | <ul> |
| 11 | <li><a href="#androidGPSBuildingDriver">Building a GPS Library</a></li> |
| 12 | <li><a href="#androidGPSInterface">Interface</a></li> |
| 13 | </ul> |
| 14 | </div> |
| 15 | </div> |
| 16 | |
| 17 | <p>Android defines a user space C abstraction interface for GPS hardware. The interface header is defined in <code>include/hardware/gps.h</code>. In order to integate GPS with Android, you need to build a shared library that implements this interface. </p> |
| 18 | |
| 19 | |
| 20 | <a name="androidGPSBuildingDriver"></a><h3>Building a GPS Library</h3> |
| 21 | |
| 22 | <p>To implement a GPS driver, create a shared library that implements the interface defined in <code>gps.h</code>. You must name your shared library <code>libgps.so</code> so that it will get loaded from <code>/system/lib</code> at runtime. Place GPS sources and Android.mk in <code>vendor/acme/chipset_or_board/gps/</code> (where "acme" is your organization name and "chipset_or_board" is your hardware target).</p> |
| 23 | |
| 24 | <p>The following stub <code>Android.mk</code> file ensures that <code>libgps</code> compiles and links to the appropriate libraries:</p> |
| 25 | |
| 26 | <pre class="prettify"> |
| 27 | LOCAL_PATH := $(call my-dir) |
| 28 | include $(CLEAR_VARS) |
| 29 | |
| 30 | LOCAL_MODULE := libgps |
| 31 | |
| 32 | LOCAL_STATIC_LIBRARIES:= \ |
| 33 | # include any static library dependencies |
| 34 | |
| 35 | LOCAL_SHARED_LIBRARIES := \ |
| 36 | # include any shared library dependencies |
| 37 | |
| 38 | LOCAL_SRC_FILES += \ |
| 39 | # include your source files. eg. MyGpsLibrary.cpp |
| 40 | |
| 41 | LOCAL_CFLAGS += \ |
| 42 | # include any needed compile flags |
| 43 | |
| 44 | LOCAL_C_INCLUDES:= \ |
| 45 | # include any needed local header files |
| 46 | |
| 47 | include $(BUILD_SHARED_LIBRARY) |
| 48 | </pre> |
| 49 | |
| 50 | |
| 51 | <a name="androidGPSInterface"></a><h3>Interface</h3> |
| 52 | |
| 53 | |
| 54 | |
| 55 | <p><span class="lh3"><a name="androidDoxygenNote"></a></span> |
| 56 | |
| 57 | <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="gps.html">click here</a>.</p> |
| 58 | |
| 59 | |
| 60 | <iframe onLoad="resizeDoxFrameHeight();" src="gps_8h.html" scrolling="no" scroll="no" id="doxygen" marginwidth="0" marginheight="0" frameborder="0" style="width:100%;"></iframe> |