ARM-software
/
CMSIS_5
kopia lustrzana https://github-proxy.rt-thread.io/ARM-software/CMSIS_5.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208
							<!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>Create an RTX5 Project</title>
<title>CMSIS-RTOS2: Create an RTX5 Project</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 type="text/javascript" src="printComponentTabs.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>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 46px;">
  <td id="projectlogo"><img alt="Logo" src="CMSIS_Logo_Final.png"/></td>
  <td style="padding-left: 0.5em;">
   <div id="projectname">CMSIS-RTOS2
   &#160;<span id="projectnumber">Version 2.1.3</span>
   </div>
   <div id="projectbrief">Real-Time Operating System: API and RTX Reference Implementation</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 1.8.6 -->
<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&#160;Page</span></a></li>
      <li class="current"><a href="pages.html"><span>Usage&#160;and&#160;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 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('cre_rtx_proj.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">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark">&#160;</span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark">&#160;</span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark">&#160;</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">Create an RTX5 Project </div>  </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><p>The steps to create a microcontroller application using RTX5 are:</p>
<ul>
<li>Create a new project and select a microcontroller device.</li>
<li><p class="startli">In the Manage Run-Time Environment window, select <b>CMSIS::CORE</b> and <b>CMSIS::RTOS2 (API)::Keil RTX5</b>. You can choose to either add RTX as a library (Variant: <b>Library</b>) or to add the full source code (Variant: <b>Source</b> - required if using the <a href="https://www.keil.com/pack/doc/compiler/EventRecorder/html/index.html" target="_blank"><b>Event Recorder</b></a>):</p>
<div class="image">
<img src="manage_rte_output.png" alt="manage_rte_output.png"/>
</div>
</li>
<li>If the <b>Validation Output</b> requires other components to be present, try to use the <b>Resolve</b> button.</li>
<li><p class="startli">Click <b>OK</b>. In the <b>Project</b> window, you will see the files that have been automatically added to you project, such as <b>RTX_Config.h</b>, <b>RTX_Config.c</b>, the library or the source code files, as well as the system and startup files:</p>
<div class="image">
<img src="project_window.png" alt="project_window.png"/>
</div>
</li>
<li>If using the Variant: <b>Source</b> as stated above, you have to assure to use at least C99 compiler mode (Project Options -&gt; C/C++ -&gt; C99 Mode).</li>
<li><p class="startli">You can add template files to the project by right-clicking on <b>Source Group 1</b> and selecting <b>Add New Item to 'Source Group 1'</b>. In the new window, click on <b>User Code Template</b>. On the right-hand side you will see all available template files for CMSIS-RTOS RTX:</p>
<div class="image">
<img src="add_item.png" alt="add_item.png"/>
</div>
</li>
<li><a class="el" href="config_rtx5.html">Configure</a> RTX5 to the application's needs using the <b>RTX_Config.h</b> file.</li>
</ul>
<h1><a class="anchor" id="cre_rtx_cortexa"></a>
Additional requirements for RTX on Cortex-A</h1>
<p>Cortex-A based microcontrollers are less unified with respect to the interrupt and timer implementations used compared to M-class devices. Thus RTX requires additional components when an A-class device is used, namely <a href="../../Core_A/html/group__irq__ctrl__gr.html"><b>IRQ Controller (API)</b></a> and <a class="el" href="group__CMSIS__RTOS__TickAPI.html">OS Tick (API)</a> implementations.</p>
<div class="image">
<img src="manage_rte_cortex-a.png" alt="manage_rte_cortex-a.png"/>
</div>
<p>The default implementations provided along with CMSIS are</p>
<ul>
<li>Arm <a href="../../Core_A/html/group__GIC__functions.html">Generic Interrupt Controller (GIC)</a></li>
<li>Arm Cortex-A5, Cortex-A9 <a href="../../Core_A/html/group__PTM__timer__functions.html">Private Timer (PTIM)</a></li>
<li>Arm Cortex-A7 <a href="../../Core_A/html/group__PL1__timer__functions.html">Generic Physical Timer (GTIM)</a></li>
</ul>
<p>For devices not implementing GIC, PTIM nor GTIM please refer to the according device family pack and select the proper implementations.</p>
<h1><a class="anchor" id="cre_UsingIRQs"></a>
Using Interrupts on Cortex-M</h1>
<p>On Cortex-M processors, the RTX5 kernel uses the following interrupt exceptions. The table below also lists the priorities that must be assigned to these interrupts.</p>
<table class="doxtable">
<tr>
<th align="left">Handler </th><th align="left">Priority </th><th align="left">Interrupt/Exception  </th></tr>
<tr>
<td align="left">SysTick </td><td align="left">lowest </td><td align="left">Kernel system timer interrupt to generate periodic timer ticks </td></tr>
<tr>
<td align="left">PendSV </td><td align="left">lowest </td><td align="left">PendSV (request for system-level service) when calling certain RTX functions from <b>Handler</b> mode </td></tr>
<tr>
<td align="left">SVC </td><td align="left">lowest+1 </td><td align="left">Supervisor Call used to enter the RTOS kernel from <b>Thread</b> mode </td></tr>
</table>
<p>Other device interrupts can be used without limitation. For Arm Cortex-M3/M4/M7 /M23/M33/M35P processors, interrupts are never disabled by RTX Kernel.</p>
<p><b>Usage of interrupt priority grouping</b></p>
<ul>
<li>The interrupt priority grouping should be configured using the CMSIS-Core function NVIC_SetPriorityGrouping before calling the function <a class="el" href="group__CMSIS__RTOS__KernelCtrl.html#ga9ae2cc00f0d89d7b6a307bba942b5221">osKernelStart()</a>. The RTX kernel uses the priority group value to setup the priority for SysTick and PendSV interrupts.</li>
<li>The RTX kernel sets the priority for the interrupts/exceptions listed in above table and uses the lowest two priority levels.</li>
<li>Do not change the priority used by the RTX kernel. If this cannot be avoided, ensure that the preempt priority of SysTick/PendSV is lower than SVC.</li>
<li>Permitted priority group values are 0 to 6. The priority group value 7 will cause RTX to fail as there is only one priority level available.</li>
<li>The <b>main stack</b> is used to run the RTX functionality. It is therefore required to configure sufficient stack for the RTX kernel execution.</li>
</ul>
<p><b>Code Example</b> </p>
<div class="fragment"><div class="line"><a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#gae818f6611d25ba3140bede410a52d659">osKernelInitialize</a>();                            <span class="comment">// initialize RTX</span></div>
<div class="line">NVIC_SetPriorityGrouping (3);                    <span class="comment">// setup priority grouping</span></div>
<div class="line">tread_id = <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga48d68b8666d99d28fa646ee1d2182b8f">osThreadNew</a>(tread_func, NULL, NULL);  <span class="comment">// create some threads</span></div>
<div class="line"><a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#ga9ae2cc00f0d89d7b6a307bba942b5221">osKernelStart</a> ();                                <span class="comment">// start RTX kernel</span></div>
</div><!-- fragment --><h1><a class="anchor" id="cre_rtx_proj_specifics"></a>
Add support for RTX specific functions</h1>
<p>If you require some of the <a class="el" href="group__rtx5__specific.html">RTX specific functions</a> in your application code, #include the <a class="el" href="theory_of_operation.html#rtx_os_h">header file rtx_os.h</a>. This enables <a class="el" href="theory_of_operation.html#lowPower">low-power</a> and <a class="el" href="theory_of_operation.html#TickLess">tick-less</a> operation modes.</p>
<h1><a class="anchor" id="cre_rtx_proj_er"></a>
Add Event Recorder Visibility</h1>
<p>RTX5 interfaces to the <a href="https://www.keil.com/pack/doc/compiler/EventRecorder/html/index.html" target="_blank"><b>Event Recorder</b></a> to provide event information which helps you to understand and analyze the operation.</p>
<ul>
<li>To use the Event Recorder together with RTX5, select the software component <b>Compiler:Event Recorder</b>.</li>
<li><p class="startli">Select the <b>Source</b> variant of the software component <b>CMSIS:RTOS2 (API):Keil RTX5</b>.</p>
<div class="image">
<img src="event_recorder_rte.png" alt="event_recorder_rte.png"/>
<div class="caption">
Component selection for Event Recorder</div></div>
</li>
<li>Enable the related settings under <a class="el" href="config_rtx5.html#evtrecConfig">Event Recorder Configuration</a>.</li>
<li>Build the application code and download it to the debug hardware. Once the target application generates event information, it can be viewed in the µVision debugger using the <b>Event</b> <b>Recorder</b>. </li>
</ul>
</div></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="index.html">index</a></li><li class="navelem"><a class="el" href="rtx5_impl.html">RTX v5 Implementation</a></li>
    <li class="footer">Generated on Thu Apr 9 2020 15:49:59 for CMSIS-RTOS2 Version 2.1.3 by Arm Ltd. All rights reserved.
	<!--
    <a href="http://www.doxygen.org/index.html">
    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 
	-->
	</li>
  </ul>
</div>
</body>
</html>