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diff --git a/CMSIS/Documentation/RTX/html/group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html b/CMSIS/Documentation/RTX/html/group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html new file mode 100644 index 0000000..31e3f13 --- /dev/null +++ b/CMSIS/Documentation/RTX/html/group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html @@ -0,0 +1,452 @@ +<!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>Kernel Information and Control</title> +<title>CMSIS-RTOS RTX: Kernel Information and Control</title> +<link href="tabs.css" rel="stylesheet" type="text/css"/> +<link href="cmsis.css" rel="stylesheet" type="text/css" /> +<script type="text/javascript" src="jquery.js"></script> +<script type="text/javascript" src="dynsections.js"></script> +<script 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4.80</span> + </div> + <div id="projectbrief">CMSIS-RTOS RTX: Real-Time Operating System for Cortex-M processor-based devices</div> + </td> + </tr> + </tbody> +</table> +</div> +<!-- end header part --> +<div id="CMSISnav" class="tabs1"> + <ul class="tablist"> + <script type="text/javascript"> + <!-- + writeComponentTabs.call(this); + //--> + </script> + </ul> +</div> +<!-- Generated by Doxygen 1.8.2 --> +<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>Main Page</span></a></li> + <li><a href="pages.html"><span>Usage and Description</span></a></li> + <li><a href="modules.html"><span>Reference</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 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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>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</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 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href="#func-members">Functions</a> </div> + <div class="headertitle"> +<div class="title">Kernel Information and Control</div> </div> +<div class="ingroups"><a class="el" href="group___c_m_s_i_s___r_t_o_s.html">CMSIS-RTOS API (RTX)</a></div></div><!--header--> +<div class="contents"> + +<p>Provide version/system information and start the RTOS Kernel. +<a href="#details">More...</a></p> +<table class="memberdecls"> +<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a> +Macros</h2></td></tr> +<tr class="memitem:ga22f7d235bc9f783933bd5a981fd79696"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga22f7d235bc9f783933bd5a981fd79696">osFeature_MainThread</a>   1</td></tr> +<tr class="memdesc:ga22f7d235bc9f783933bd5a981fd79696"><td class="mdescLeft"> </td><td class="mdescRight">main can be thread <a href="#ga22f7d235bc9f783933bd5a981fd79696"></a><br/></td></tr> +<tr class="separator:ga22f7d235bc9f783933bd5a981fd79696"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gae554ec16c23c5b7d65affade2a351891"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gae554ec16c23c5b7d65affade2a351891">osFeature_SysTick</a>   1</td></tr> +<tr class="memdesc:gae554ec16c23c5b7d65affade2a351891"><td class="mdescLeft"> </td><td class="mdescRight">osKernelSysTick functions available <a href="#gae554ec16c23c5b7d65affade2a351891"></a><br/></td></tr> +<tr class="separator:gae554ec16c23c5b7d65affade2a351891"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga702196bacccbb978620c736b209387f1"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga702196bacccbb978620c736b209387f1">osCMSIS</a>   0x10002U</td></tr> +<tr class="memdesc:ga702196bacccbb978620c736b209387f1"><td class="mdescLeft"> </td><td class="mdescRight">CMSIS-RTOS API version (main [31:16] .sub [15:0]) <a href="#ga702196bacccbb978620c736b209387f1"></a><br/></td></tr> +<tr class="separator:ga702196bacccbb978620c736b209387f1"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga4f74ed918c795e909dc1cea0040fd3b7"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga4f74ed918c795e909dc1cea0040fd3b7">osCMSIS_RTX</a>   ((4<<16)|80)</td></tr> +<tr class="memdesc:ga4f74ed918c795e909dc1cea0040fd3b7"><td class="mdescLeft"> </td><td class="mdescRight">RTOS identification and version (main [31:16] .sub [15:0]) <a href="#ga4f74ed918c795e909dc1cea0040fd3b7"></a><br/></td></tr> +<tr class="separator:ga4f74ed918c795e909dc1cea0040fd3b7"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga47cf03658f01cdffca688e9096b58289"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga47cf03658f01cdffca688e9096b58289">osKernelSystemId</a>   "RTX V4.80"</td></tr> +<tr class="memdesc:ga47cf03658f01cdffca688e9096b58289"><td class="mdescLeft"> </td><td class="mdescRight">RTOS identification string. <a href="#ga47cf03658f01cdffca688e9096b58289"></a><br/></td></tr> +<tr class="separator:ga47cf03658f01cdffca688e9096b58289"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga9e0954d52722673e2031233a2ab99960"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga9e0954d52722673e2031233a2ab99960">osKernelSysTickFrequency</a>   os_tickfreq</td></tr> +<tr class="memdesc:ga9e0954d52722673e2031233a2ab99960"><td class="mdescLeft"> </td><td class="mdescRight">The RTOS kernel system timer frequency in Hz. <a href="#ga9e0954d52722673e2031233a2ab99960"></a><br/></td></tr> +<tr class="separator:ga9e0954d52722673e2031233a2ab99960"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gae12c190af42d7310d8006d64f4ed5a88"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gae12c190af42d7310d8006d64f4ed5a88">osKernelSysTickMicroSec</a>(microsec)   ((microsec * os_tickus_i) + ((microsec * os_tickus_f) >> 16))</td></tr> +<tr class="memdesc:gae12c190af42d7310d8006d64f4ed5a88"><td class="mdescLeft"> </td><td class="mdescRight">Convert a microseconds value to a RTOS kernel system timer value. <a href="#gae12c190af42d7310d8006d64f4ed5a88"></a><br/></td></tr> +<tr class="separator:gae12c190af42d7310d8006d64f4ed5a88"><td class="memSeparator" colspan="2"> </td></tr> +</table><table class="memberdecls"> +<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> +Functions</h2></td></tr> +<tr class="memitem:ga53d078a801022e202e8115c083ece68e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga53d078a801022e202e8115c083ece68e">osKernelInitialize</a> (void)</td></tr> +<tr class="memdesc:ga53d078a801022e202e8115c083ece68e"><td class="mdescLeft"> </td><td class="mdescRight">Initialize the RTOS Kernel for creating objects. <a href="#ga53d078a801022e202e8115c083ece68e"></a><br/></td></tr> +<tr class="separator:ga53d078a801022e202e8115c083ece68e"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gaab668ffd2ea76bb0a77ab0ab385eaef2"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2">osKernelStart</a> (void)</td></tr> +<tr class="memdesc:gaab668ffd2ea76bb0a77ab0ab385eaef2"><td class="mdescLeft"> </td><td class="mdescRight">Start the RTOS Kernel. <a href="#gaab668ffd2ea76bb0a77ab0ab385eaef2"></a><br/></td></tr> +<tr class="separator:gaab668ffd2ea76bb0a77ab0ab385eaef2"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga3b571de44cd3094c643247a7397f86b5"><td class="memItemLeft" align="right" valign="top">int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga3b571de44cd3094c643247a7397f86b5">osKernelRunning</a> (void)</td></tr> +<tr class="memdesc:ga3b571de44cd3094c643247a7397f86b5"><td class="mdescLeft"> </td><td class="mdescRight">Check if the RTOS kernel is already started. <a href="#ga3b571de44cd3094c643247a7397f86b5"></a><br/></td></tr> +<tr class="separator:ga3b571de44cd3094c643247a7397f86b5"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gad0262e4688e95d1e9038afd9bcc16001"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gad0262e4688e95d1e9038afd9bcc16001">osKernelSysTick</a> (void)</td></tr> +<tr class="memdesc:gad0262e4688e95d1e9038afd9bcc16001"><td class="mdescLeft"> </td><td class="mdescRight">Get the RTOS kernel system timer counter. <a href="#gad0262e4688e95d1e9038afd9bcc16001"></a><br/></td></tr> +<tr class="separator:gad0262e4688e95d1e9038afd9bcc16001"><td class="memSeparator" colspan="2"> </td></tr> +</table> +<a name="details" id="details"></a><h2 class="groupheader">Description</h2> +<p>The Kernel Information and Control function group allow to:</p> +<ul> +<li>obtain information about the system and the underlying kernel.</li> +<li>obtain version information about the CMSIS RTOS API.</li> +<li>initialize of the RTOS kernel for creating objects.</li> +<li>start the RTOS kernel and thread switching.</li> +<li>check the execution status of the RTOS kernel.</li> +</ul> +<p>The function <b>main</b> is a special thread function that may be started at system initialization. In this case it has the initial priority <em>osPriorityNormal</em>.</p> +<p><b>Example</b> </p> +<div class="fragment"><div class="line"><span class="keywordtype">void</span> system_error (<span class="keywordtype">void</span>) {</div> +<div class="line"> <span class="comment">// fatal error: set system to a safe state</span></div> +<div class="line"> <span class="keywordflow">while</span> (1);</div> +<div class="line">}</div> +<div class="line"></div> +<div class="line"></div> +<div class="line"><span class="keywordtype">int</span> main (<span class="keywordtype">void</span>) { <span class="comment">// program execution starts here</span></div> +<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga53d078a801022e202e8115c083ece68e" title="Initialize the RTOS Kernel for creating objects.">osKernelInitialize</a> () != <a class="code" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99ea9e1c9e2550bb4de8969a935acffc968f" title="function completed; no error or event occurred.">osOK</a>) { <span class="comment">// initialize RTOS kernel</span></div> +<div class="line"> system_error (); <span class="comment">// invoke system error function</span></div> +<div class="line"> }</div> +<div class="line"></div> +<div class="line"> system_initialize (); <span class="comment">// setup and initialize peripherals</span></div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gac59b5713cb083702dce759c73fd90dff" title="Create a thread and add it to Active Threads and set it to state READY.">osThreadCreate</a> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453" title="Access a Thread definition.">osThread</a>(job1)); <span class="comment">// create threads </span></div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gac59b5713cb083702dce759c73fd90dff" title="Create a thread and add it to Active Threads and set it to state READY.">osThreadCreate</a> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453" title="Access a Thread definition.">osThread</a>(job2)); </div> +<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2" title="Start the RTOS Kernel.">osKernelStart</a> () != <a class="code" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99ea9e1c9e2550bb4de8969a935acffc968f" title="function completed; no error or event occurred.">osOK</a>) { <span class="comment">// start kernel with job2 execution</span></div> +<div class="line"> system_error (); <span class="comment">// invoke system error function</span></div> +<div class="line"> }</div> +<div class="line">}</div> +</div><!-- fragment --> <h2 class="groupheader">Macro Definition Documentation</h2> +<a class="anchor" id="ga702196bacccbb978620c736b209387f1"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osCMSIS   0x10002U</td> + </tr> + </table> +</div><div class="memdoc"> +<p>Version information of the CMSIS RTOS API whereby major version is in bits [31:16] and sub version in bits [15:0]. The value 0x10000 represents version 1.00. </p> + +</div> +</div> +<a class="anchor" id="ga4f74ed918c795e909dc1cea0040fd3b7"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osCMSIS_RTX   ((4<<16)|80)</td> + </tr> + </table> +</div><div class="memdoc"> +<p>Identifies the CMSIS-RTOS RTX kernel and version number. </p> + +</div> +</div> +<a class="anchor" id="ga22f7d235bc9f783933bd5a981fd79696"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osFeature_MainThread   1</td> + </tr> + </table> +</div><div class="memdoc"> +<p>CMSIS-RTOS RTX starts with 'main'. The RTOS kernel is in this case already started. </p> + +</div> +</div> +<a class="anchor" id="gae554ec16c23c5b7d65affade2a351891"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osFeature_SysTick   1</td> + </tr> + </table> +</div><div class="memdoc"> +<p>CMSIS-RTOS RTX provides access to the RTOS kernel system timer with <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gad0262e4688e95d1e9038afd9bcc16001">osKernelSysTick</a>, <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga9e0954d52722673e2031233a2ab99960">osKernelSysTickFrequency</a>, and <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gae12c190af42d7310d8006d64f4ed5a88">osKernelSysTickMicroSec</a>. </p> + +</div> +</div> +<a class="anchor" id="ga47cf03658f01cdffca688e9096b58289"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osKernelSystemId   "RTX V4.80"</td> + </tr> + </table> +</div><div class="memdoc"> +<p>Defines the CMSIS-RTOS RTX Kernel and provides version information. </p> + +</div> +</div> +<a class="anchor" id="ga9e0954d52722673e2031233a2ab99960"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osKernelSysTickFrequency   os_tickfreq</td> + </tr> + </table> +</div><div class="memdoc"> +<p>Specifies the frequency of the Kernel SysTick timer in Hz. The value is typically use to scale a time value and is for example used in <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gae12c190af42d7310d8006d64f4ed5a88">osKernelSysTickMicroSec</a>.</p> +<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gad0262e4688e95d1e9038afd9bcc16001" title="Get the RTOS kernel system timer counter.">osKernelSysTick</a></dd></dl> +<dl class="section note"><dt>Note</dt><dd>Reflects the system timer setting and is typically defined in a configuration file. </dd></dl> + +</div> +</div> +<a class="anchor" id="gae12c190af42d7310d8006d64f4ed5a88"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osKernelSysTickMicroSec</td> + <td>(</td> + <td class="paramtype"> </td> + <td class="paramname">microsec</td><td>)</td> + <td>   ((microsec * os_tickus_i) + ((microsec * os_tickus_f) >> 16))</td> + </tr> + </table> +</div><div class="memdoc"> +<p>Allows to scale a microsecond value to the frequency of the Kernel SysTick timer. This macro is typically used to check for short timeouts in polling loops.</p> +<dl class="section see"><dt>See Also</dt><dd><a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gad0262e4688e95d1e9038afd9bcc16001" title="Get the RTOS kernel system timer counter.">osKernelSysTick</a></dd></dl> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramname">microsec</td><td>time value in microseconds. </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>time value normalized to the <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga9e0954d52722673e2031233a2ab99960">osKernelSysTickFrequency</a> </dd></dl> + +</div> +</div> +<h2 class="groupheader">Function Documentation</h2> +<a class="anchor" id="ga53d078a801022e202e8115c083ece68e"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> osKernelInitialize </td> + <td>(</td> + <td class="paramtype">void </td> + <td class="paramname"></td><td>)</td> + <td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> +<p>Initialize of the RTOS Kernel to allow peripheral setup and creation of other RTOS objects with the functions:</p> +<ul> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gac59b5713cb083702dce759c73fd90dff">osThreadCreate</a> : Create a thread function.</li> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___timer_mgmt.html#gaedd312bfdca04e0b8162b666e09a1ae6">osTimerCreate</a> : Define attributes of the timer callback function.</li> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___mutex_mgmt.html#ga5c9de56e717016e39e788064e9a291cc">osMutexCreate</a> : Define and initialize a mutex.</li> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___semaphore_mgmt.html#ga97381e8e55cd47cec390bf57c96d6edb">osSemaphoreCreate</a> : Define and initialize a semaphore.</li> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___pool_mgmt.html#ga34af5c4f4ab38f4138ea7f1f9ece3a1a">osPoolCreate</a> : Define and initialize a fix-size memory pool.</li> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___message.html#gaf3b9345cf426304d46565152bc26fb78">osMessageCreate</a> : Define and initialize a message queue.</li> +<li><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a> : Define and initialize a mail queue with fix-size memory blocks.</li> +</ul> +<p>CMSIS-RTOS RTX Kernel starts thread execution with the function <em>main</em>. In this case, the function <b>osKernelInitialize</b> stops thread switching. This allows to setup the system to a defined state before thread switching is resumed with <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2">osKernelStart</a>.</p> +<dl class="section note"><dt>Note</dt><dd>Cannot be called from <a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> +<p><b>Example</b> </p> +<div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>"</span></div> +<div class="line"> </div> +<div class="line"><span class="keywordtype">int</span> main (<span class="keywordtype">void</span>) {</div> +<div class="line"> <span class="keywordflow">if</span> (!<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga3b571de44cd3094c643247a7397f86b5" title="Check if the RTOS kernel is already started.">osKernelRunning</a> ()) { <span class="comment">// if kernel is not running, initialize the kernel</span></div> +<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga53d078a801022e202e8115c083ece68e" title="Initialize the RTOS Kernel for creating objects.">osKernelInitialize</a> () != <a class="code" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99ea9e1c9e2550bb4de8969a935acffc968f" title="function completed; no error or event occurred.">osOK</a>) { <span class="comment">// check osStatus for other possible valid values</span></div> +<div class="line"> <span class="comment">// exit with an error message</span></div> +<div class="line"> }</div> +<div class="line"> }</div> +<div class="line"> :</div> +<div class="line">}</div> +</div><!-- fragment --> +</div> +</div> +<a class="anchor" id="ga3b571de44cd3094c643247a7397f86b5"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">int32_t osKernelRunning </td> + <td>(</td> + <td class="paramtype">void </td> + <td class="paramname"></td><td>)</td> + <td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section return"><dt>Returns</dt><dd>0 RTOS is not started, 1 RTOS is started.</dd></dl> +<p>Identifies if the RTOS kernel is started. For CMSIS-RTOS RTX, this allows to identify that the RTOS kernel is already running.</p> +<dl class="section note"><dt>Note</dt><dd><a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a> can call this function.</dd></dl> +<p><b>Example</b> </p> +<div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>"</span></div> +<div class="line"> </div> +<div class="line"><span class="keywordtype">int</span> main (<span class="keywordtype">void</span>) { <span class="comment">// program execution starts here</span></div> +<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga3b571de44cd3094c643247a7397f86b5" title="Check if the RTOS kernel is already started.">osKernelRunning</a> ()) { </div> +<div class="line"> : <span class="comment">// main is already a thread function</span></div> +<div class="line"> }</div> +<div class="line">}</div> +</div><!-- fragment --> +</div> +</div> +<a class="anchor" id="gaab668ffd2ea76bb0a77ab0ab385eaef2"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> osKernelStart </td> + <td>(</td> + <td class="paramtype">void </td> + <td class="paramname"></td><td>)</td> + <td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> +<p>Start the RTOS Kernel and begin thread switching. CMSIS-RTOS RTX starts thread execution with the function <em>main</em>. In this case, the function <b>osKernelStart</b> resumes thread switching. The <em>main</em> thread will continue executing after <b>osKernelStart</b>.</p> +<p><b><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html">Status and Error Codes</a></b><br/> +</p> +<ul> +<li><em>osOK:</em> the RTOS kernel has been successfully started.</li> +<li><em>osErrorISR:</em> <a class="el" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2">osKernelStart</a> cannot be called from interrupt service routines.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd>Cannot be called from <a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> +<p><b>Example</b> </p> +<div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>"</span></div> +<div class="line"> </div> +<div class="line"><span class="keywordtype">int</span> main (<span class="keywordtype">void</span>) {</div> +<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga53d078a801022e202e8115c083ece68e" title="Initialize the RTOS Kernel for creating objects.">osKernelInitialize</a> () != <a class="code" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99ea9e1c9e2550bb4de8969a935acffc968f" title="function completed; no error or event occurred.">osOK</a>) { <span class="comment">// check osStatus for other possible valid values</span></div> +<div class="line"> <span class="comment">// exit with an error message</span></div> +<div class="line"> }</div> +<div class="line"> </div> +<div class="line"> <span class="keywordflow">if</span> (!<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#ga3b571de44cd3094c643247a7397f86b5" title="Check if the RTOS kernel is already started.">osKernelRunning</a> ()) { <span class="comment">// is the kernel running ?</span></div> +<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2" title="Start the RTOS Kernel.">osKernelStart</a> () != <a class="code" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99ea9e1c9e2550bb4de8969a935acffc968f" title="function completed; no error or event occurred.">osOK</a>) { <span class="comment">// start the kernel</span></div> +<div class="line"> <span class="comment">// kernel could not be started</span></div> +<div class="line"> }</div> +<div class="line"> }</div> +<div class="line">}</div> +</div><!-- fragment --> +</div> +</div> +<a class="anchor" id="gad0262e4688e95d1e9038afd9bcc16001"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint32_t osKernelSysTick </td> + <td>(</td> + <td class="paramtype">void </td> + <td class="paramname"></td><td>)</td> + <td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section return"><dt>Returns</dt><dd>RTOS kernel system timer as 32-bit value</dd></dl> +<p>Get the value of the Kernel SysTick timer for time comparison. The value is a rolling 32-bit counter that is typically composed of the kernel system interrupt timer value and an counter that counts these interrupts.</p> +<p>This function allows the implementation of timeout checks. These are for example required when checking for a busy status in a device or peripheral initialization routine.</p> +<dl class="section note"><dt>Note</dt><dd>Cannot be called from <a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> +<p><b>Example</b> </p> +<div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>"</span></div> +<div class="line"></div> +<div class="line"><span class="keywordtype">void</span> SetupDevice (<span class="keywordtype">void</span>) {</div> +<div class="line"> uint32_t tick;</div> +<div class="line"> </div> +<div class="line"> tick = <a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gad0262e4688e95d1e9038afd9bcc16001" title="Get the RTOS kernel system timer counter.">osKernelSysTick</a>(); <span class="comment">// get start value of the Kernel system tick</span></div> +<div class="line"> Device.Setup (); <span class="comment">// initialize a device or peripheral</span></div> +<div class="line"> <span class="keywordflow">do</span> { <span class="comment">// poll device busy status for 100 microseconds</span></div> +<div class="line"> <span class="keywordflow">if</span> (!Device.Busy) <span class="keywordflow">break</span>; <span class="comment">// check if device is correctly initialized</span></div> +<div class="line"> } <span class="keywordflow">while</span> ((<a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gad0262e4688e95d1e9038afd9bcc16001" title="Get the RTOS kernel system timer counter.">osKernelSysTick</a>() - tick) < <a class="code" href="group___c_m_s_i_s___r_t_o_s___kernel_ctrl.html#gae12c190af42d7310d8006d64f4ed5a88" title="Convert a microseconds value to a RTOS kernel system timer value.">osKernelSysTickMicroSec</a>(100)); </div> +<div class="line"> <span class="keywordflow">if</span> (Device.Busy) { </div> +<div class="line"> ; <span class="comment">// in case device still busy, signal error</span></div> +<div class="line"> }</div> +<div class="line"> <span class="comment">// start interacting with device</span></div> +<div class="line">}</div> +</div><!-- fragment --> +</div> +</div> +</div><!-- contents --> +</div><!-- doc-content --> +<!-- start footer part --> +<div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> + <ul> + <li class="footer">Generated on Tue Oct 27 2015 14:35:45 for CMSIS-RTOS RTX by ARM Ltd. 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