ACKme
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
doc/mbed/html/http_get_2example_8cpp-example.html
- Committer:
- dan_ackme
- Date:
- 2015-02-23
- Revision:
- 39:a963f69cb2de
- Parent:
- 34:2616445d0823
File content as of revision 39:a963f69cb2de:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>ACKme WiConnect Host Library</title>
<link rel="icon" href="favicon.ico" type="image/x-icon">
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon">
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
$(window).load(resizeHeight);
</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea" style="font-family:verdana;">
<table border='0' cellpadding='0' cellspacing='0' width="98%">
<tr style="height:20px"><td> </td></tr>
<tr style="border-collapse: collapse; padding: 0;">
<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> </td></tr>
</table>
</div><!-- Generated by Doxygen 1.8.7 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Library Overview</span></a></li>
<li><a href="modules.html"><span>Library API</span></a></li>
<li><a href="examples.html"><span>API 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 Reference Manual</span></a></li>
<li><a href="http://www.ack.me/WiConnect"><span>ACKme Website</span></a></li>
<li><a href="http://developer.mbed.org/teams/ACKme/code/WiConnect/"><span>WiConnect Repository</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('http_get_2example_8cpp-example.html','');});
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Pages</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<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 "http://mbed.org"</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 <stdio.h></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 "target_config.h"</span></div>
<div class="line"><span class="comment">// include the Wiconnect Host Library API header</span></div>
<div class="line"><span class="preprocessor">#include "Wiconnect.h"</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"> <a name="a0"></a><a class="code" href="group__api__core__types.html#ga325637ed501728bd6c8c7a7982b9ce05">WiconnectResult</a> result;</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">"Initializing WiConnect Library...\r\n"</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>(<a name="a1"></a><a class="code" href="group__api__core__macro.html#gab27aa3ef76302b5221766abfd4f47e64">WICONNECT_FAILED</a>(result, wiconnect.init(<span class="keyword">true</span>)))</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordflow">if</span>(result == <a name="a2"></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">"** The WiFi firmware is not supported. Run the ota example to update the firmware:\r\n"</span>);</div>
<div class="line"> printf(<span class="stringliteral">"https://developer.mbed.org/teams/ACKme/code/wiconnect-ota_example\r\n\r\n"</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">"Failed to initialize communication with WiFi module!\r\n"</span></div>
<div class="line"> <span class="stringliteral">"Make sure the wires are connected correctly\r\n"</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're not specifying the rx buffer pointer so that means it'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">"Issuing HTTP Request: %s\r\n"</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 name="a3"></a><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">"Failed to issue HTTP request. Does the module have valid network credentials?\r\n"</span>);</div>
<div class="line"> printf(<span class="stringliteral">"Use the network join example to configure the module's network credentials:\r\n"</span>);</div>
<div class="line"> printf(<span class="stringliteral">"https://developer.mbed.org/teams/ACKme/code/wiconnect-join_example\r\n"</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's data to read, retreive and print it</span></div>
<div class="line"> <span class="keywordflow">while</span>(socket.read(&dataPtr, &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">"HTTP GET example has completed!\r\n"</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">© ACKme Networks 2014</li>
</ul>
</div>
</body>
</html>
Repository toolbox
| Export to desktop IDE |
Repository details
| Type: | Library |
|---|---|
| Created: | 11 Aug 2014 |
| Imports: | 190 |
| Forks: | 0 |
| Commits: | 43 |
| Dependents: | 10 |
| Dependencies: | 0 |
| Followers: | 25 |
Components
AMW006-A02