ACKme / WiConnect

Host library for controlling a WiConnect enabled Wi-Fi module.

Dependents:   wiconnect-ota_example wiconnect-web_setup_example wiconnect-test-console wiconnect-tcp_server_example ... more

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+        <td style="width:20px"></td>
+        <td style="padding-right:40px"><img src="ackmelogo.png" alt="ACKme Logo" /></td>
+        <td style="vertical-align:middle; text-align:left; font: bold 25px/100% Verdana, Arial, Helvetica, sans-serif;">
+        WiConnect Host Library- API Reference Guide</td>
+        <td style="width:20px"></td>
+      </tr>
+      <tr><td>&nbsp;</td></tr>
+    </table>
+</div><!-- Generated by Doxygen 1.8.7 -->
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+  <div id="navrow1" class="tabs">
+    <ul class="tablist">
+      <li><a href="index.html"><span>Library&#160;Overview</span></a></li>
+      <li><a href="modules.html"><span>Library&#160;API</span></a></li>
+      <li><a href="examples.html"><span>API&#160;Examples</span></a></li>
+      <li><a href="annotated.html"><span>Classes</span></a></li>
+      <li><a href="http://wiconnect.ack.me/2.0/general_overview"><span>WiConnect&#160;Reference&#160;Manual</span></a></li>
+      <li><a href="http://www.ack.me/WiConnect"><span>ACKme&#160;Website</span></a></li>
+      <li><a href="http://developer.mbed.org/teams/ACKme/code/WiConnect/"><span>WiConnect&#160;Repository</span></a></li>
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+  <div class="headertitle">
+<div class="title">http_get/example.cpp</div>  </div>
+</div><!--header-->
+<div class="contents">
+<p>This is an example of using the http socket API to download a webpage.</p>
+<p>It works as follows:</p><ol type="1">
+<li>Instantiate the WiConnect Library</li>
+<li>Initiate Communication with WiFi Module</li>
+<li>Issue a HTTP GET request (Note: The module must have valid network credentials See <a class="el" href="web_setup_2example_8cpp-example.html">web_setup/example.cpp</a>)</li>
+<li>Read the HTTP page and print</li>
+<li>That's it!</li>
+</ol>
+<div class="fragment"><div class="line"></div>
+<div class="line"><span class="comment">/******************************************************************************</span></div>
+<div class="line"><span class="comment"> * Example Variables</span></div>
+<div class="line"><span class="comment"> */</span></div>
+<div class="line"></div>
+<div class="line"><span class="comment">// the URL of the webpage to GET</span></div>
+<div class="line"><span class="preprocessor">#define HTTP_URL &quot;http://ack.me&quot;</span></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"><span class="comment">/******************************************************************************</span></div>
+<div class="line"><span class="comment"> * Includes</span></div>
+<div class="line"><span class="comment"> */</span></div>
+<div class="line"></div>
+<div class="line"><span class="comment">// include C library headers</span></div>
+<div class="line"><span class="preprocessor">#include &lt;stdio.h&gt;</span> <span class="comment">// needed for printf</span></div>
+<div class="line"></div>
+<div class="line"><span class="comment">// include target specific defines</span></div>
+<div class="line"><span class="preprocessor">#include &quot;target_config.h&quot;</span></div>
+<div class="line"><span class="comment">// include the Wiconnect Host Library API header</span></div>
+<div class="line"><span class="preprocessor">#include &quot;Wiconnect.h&quot;</span></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"><span class="comment">/******************************************************************************</span></div>
+<div class="line"><span class="comment"> * Global Defines</span></div>
+<div class="line"><span class="comment"> */</span></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"><span class="comment">// Serial used for printfs to terminal (i.e. NOT used for WiConnect)</span></div>
+<div class="line"><span class="keyword">static</span> Serial consoleSerial(STDIO_UART_TX, STDIO_UART_RX);</div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line"><span class="comment">/******************************************************************************</span></div>
+<div class="line"><span class="comment"> * Starting point of application</span></div>
+<div class="line"><span class="comment"> */</span></div>
+<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)</div>
+<div class="line">{</div>
+<div class="line">    consoleSerial.baud(115200); <span class="comment">// console terminal to 115200 baud</span></div>
+<div class="line"></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line">    <span class="comment">// STEP 1: Instantiate WiConnect Library</span></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// Setup  wiconnect serial interface configuration</span></div>
+<div class="line">    <span class="comment">// Here we only specify the rx buffer size and not rx buffer pointer, this means</span></div>
+<div class="line">    <span class="comment">// The serial RX buffer will be dynamically allocated</span></div>
+<div class="line">    SerialConfig serialConfig(WICONNECT_RX_PIN, WICONNECT_TX_PIN, 256, NULL);</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// Instantiate and initialize the Wiconnect library</span></div>
+<div class="line">    <span class="comment">// Here we only specify the buffer size and not buffer pointer, this means</span></div>
+<div class="line">    <span class="comment">// The internal buffer will be dynamically allocated</span></div>
+<div class="line">    Wiconnect wiconnect(serialConfig, 256, NULL, WICONNECT_RESET_PIN);</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// set the default timeout to 15s as some websites take awhile to respond</span></div>
+<div class="line">    wiconnect.setCommandDefaultTimeout(15000);</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line">    <span class="comment">// STEP 2: Initiate Communication with WiFi Module</span></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line"></div>
+<div class="line">    printf(<span class="stringliteral">&quot;Initializing WiConnect Library...\r\n&quot;</span>);</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// Initialize communication with WiFi module</span></div>
+<div class="line">    <span class="keywordflow">if</span>(wiconnect.init(<span class="keyword">true</span>) != <a name="a0"></a><a class="code" href="group__api__core__types.html#gga325637ed501728bd6c8c7a7982b9ce05af0a2ad8af174aee6b52813d8528328e7">WICONNECT_SUCCESS</a>)</div>
+<div class="line">    {</div>
+<div class="line">        <span class="keywordflow">if</span>(result == <a name="a1"></a><a class="code" href="group__api__core__types.html#gga325637ed501728bd6c8c7a7982b9ce05a62defbdafd472461054dd6bb888c9a1e">WICONNECT_FIRMWARE_OUTDATED</a>)</div>
+<div class="line">        {</div>
+<div class="line">            printf(<span class="stringliteral">&quot;The WiFi firmware is not supported. Run the ota example to update the firmware:\r\n&quot;</span>);</div>
+<div class="line">            printf(<span class="stringliteral">&quot;https://developer.mbed.org/teams/ACKme/code/wiconnect-ota_example&quot;</span>);</div>
+<div class="line">        }</div>
+<div class="line">        <span class="keywordflow">else</span></div>
+<div class="line">        {</div>
+<div class="line">            printf(<span class="stringliteral">&quot;Failed to initialize communication with WiFi module!\r\n&quot;</span></div>
+<div class="line">                   <span class="stringliteral">&quot;Make sure the wires are connected correctly\r\n&quot;</span>);</div>
+<div class="line">        }</div>
+<div class="line">        <span class="keywordflow">for</span>(;;); <span class="comment">// infinite loop</span></div>
+<div class="line">    }</div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line">    <span class="comment">// STEP 3: Issue a HTTP GET request</span></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// Initiate a socket with an RX buffer of 256 bytes</span></div>
+<div class="line">    <span class="comment">// We&#39;re not specifying the rx buffer pointer so that means it&#39;s dynamically allocated</span></div>
+<div class="line">    WiconnectSocket socket(256);</div>
+<div class="line"></div>
+<div class="line"></div>
+<div class="line">    printf(<span class="stringliteral">&quot;Issuing HTTP Request: %s\r\n&quot;</span>, HTTP_URL);</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// Issue HTTP request</span></div>
+<div class="line">    <span class="comment">// NOTE: the module must have valid network credentials</span></div>
+<div class="line">    <span class="keywordflow">if</span>(wiconnect.httpGet(socket, HTTP_URL) != <a class="code" href="group__api__core__types.html#gga325637ed501728bd6c8c7a7982b9ce05af0a2ad8af174aee6b52813d8528328e7">WICONNECT_SUCCESS</a>)</div>
+<div class="line">    {</div>
+<div class="line">        printf(<span class="stringliteral">&quot;Failed to issue HTTP request. Does the module have valid network credentials?\r\n&quot;</span>);</div>
+<div class="line">        <span class="keywordflow">for</span>(;;); <span class="comment">// infinite loop</span></div>
+<div class="line">    }</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line">    <span class="comment">// STEP 4: Read the HTTP page and print</span></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line"></div>
+<div class="line">    uint8_t *dataPtr;</div>
+<div class="line">    uint16_t dataLength;</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">// while there&#39;s data to read, retreive and print it</span></div>
+<div class="line">    <span class="keywordflow">while</span>(socket.read(&amp;dataPtr, &amp;dataLength) == <a class="code" href="group__api__core__types.html#gga325637ed501728bd6c8c7a7982b9ce05af0a2ad8af174aee6b52813d8528328e7">WICONNECT_SUCCESS</a>)</div>
+<div class="line">    {</div>
+<div class="line">        fwrite(dataPtr, 1, dataLength, stdout);</div>
+<div class="line">    }</div>
+<div class="line"></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line">    <span class="comment">// STEP 5: Done!</span></div>
+<div class="line">    <span class="comment">//-------------------------------------------------------------------------</span></div>
+<div class="line"></div>
+<div class="line">    printf(<span class="stringliteral">&quot;HTTP GET example has completed!\r\n&quot;</span>);</div>
+<div class="line"></div>
+<div class="line">    <span class="keywordflow">while</span>(<span class="keyword">true</span>){} <span class="comment">// infinite loop</span></div>
+<div class="line">}</div>
+<div class="line"></div>
+<div class="line"></div>
+</div><!-- fragment --> </div><!-- contents -->
+</div><!-- doc-content -->
+<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
+  <ul>
+    <li class="footer">&copy; ACKme Networks 2014</li>
+  </ul>
+</div>
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+</html>
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