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<title>HBNRAM — BL602 IoT SDK release_bl_iot_sdk_1.6.11-1-g66bb28da 文档</title>
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<a href="../../index.html" class="icon icon-home" alt="Documentation Home"> BL602 IoT SDK
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release_bl_iot_sdk_1.6.11-1-g66bb28da
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<p class="caption"><span class="caption-text">Developer_Environment</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../../Developer_Environment/Developer_Environment.html">1. Developer Environment</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../Developer_Environment/freedom_studio/freedom_studio.html">3. Freedom Studio</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../helloworld/helloworld.html">1. Helloword</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../demo_peripherals_gpio/GPIO.html">3. GPIO</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../demo_peripherals_uart_echo/uart_echo.html">4. UART_echo</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../demo_protocols_http/http.html">6. Http client</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../demo_ble/ble.html">13. BLE</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../demo_mesh/mesh.html">14. Mesh</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../demo_blsync_ble/blsync_ble.html">15. BLSYNC-BLE</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../sdk_app_easyflash_boottimes/easyflash_boottimes.html">16. Easyflash4 boot times</a></li>
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</ul>
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<p class="caption"><span class="caption-text">Components</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../../Components/arch.html">1. arch</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../Components/Hal_drv/gpio.html">4. GPIO</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../Components/Middleware/bloop/bloop.html">5. BLOOP</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../Components/BLE/provision_WiFi/provision_WiFi.html">15. Provision_WiFi</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../Components/BLE/ble_stack/ble_stack.html">17. BLE</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../API/sys/cronalarms.html">1. cronalarms</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../API/wifi/wifi_mgmr.html">2. Wi-Fi Manager</a></li>
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<a href="../../_sources/Examples/demo_hbnram/hbnram.rst.txt" rel="nofollow"> 查看页面源码</a>
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<div class="section" id="hbnram">
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<span id="hbnram-index"></span><h1>HBNRAM<a class="headerlink" href="#hbnram" title="永久链接至标题">¶</a></h1>
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<div class="section" id="id1">
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<h2>总览<a class="headerlink" href="#id1" title="永久链接至标题">¶</a></h2>
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<p>本示例主要介绍如何使用hbnram的api</p>
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</div>
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<div class="section" id="id2">
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<h2>使用步骤<a class="headerlink" href="#id2" title="永久链接至标题">¶</a></h2>
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<p>1.首先进行初始化.调用hal_hbnram_init(void)，进行初始化hbnram。如果是断电重启，则会清空hbnram,如果是不断点的reboot,则仅校验数据。
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2.hal_hbnram_alloc(const char <a href="#id3"><span class="problematic" id="id4">*</span></a>key, int len),key 必须是const char 类型的字符串，且必须小于4个字符。len是要申请的内存的长度。
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3.hal_hbnram_buffer_set(const char <a href="#id5"><span class="problematic" id="id6">*</span></a>key, uint8_t <a href="#id7"><span class="problematic" id="id8">*</span></a>buf, int length)；把数据一次写入申请的buff.
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4.hal_hbnram_buffer_get(const char <a href="#id9"><span class="problematic" id="id10">*</span></a>key, uint8_t <a href="#id11"><span class="problematic" id="id12">*</span></a>buf, int length)；把数据一次从buff读出
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5.hal_hbnram_handle_get_fromkey(const char <a href="#id13"><span class="problematic" id="id14">*</span></a>key, hbnram_handle_t <a href="#id15"><span class="problematic" id="id16">*</span></a>handle);如果需要流读写，需要首先根据key，获取hanlde.
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6.hal_hbnram_copy_from_stream(hbnram_handle_t <a href="#id17"><span class="problematic" id="id18">*</span></a>handle, uint8_t <a href="#id19"><span class="problematic" id="id20">*</span></a>buf, int len);流读出
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7.hal_hbnram_copy_to_stream(hbnram_handle_t <a href="#id21"><span class="problematic" id="id22">*</span></a>handle, uint8_t <a href="#id23"><span class="problematic" id="id24">*</span></a>buf, int len); 流写入</p>
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<p>具体使用方式参考 sdk_app_hbnram下的demo.c</p>
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<p>应用实例:
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将工程sdk_app_hbnram 编译，烧写进入板子。重启板子。</p>
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