blob: 6c17a2e68ead2a440ab910579a339f2f05158074 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
<!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>Basic CMSIS Example</title>
<title>CMSIS-CORE: Basic CMSIS Example</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);
</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="stylsheetf" rel="stylesheet" type="text/css" />
</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-CORE
 <span id="projectnumber">Version 4.30</span>
</div>
<div id="projectbrief">CMSIS-CORE support 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 class="current"><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 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('_using__c_m_s_i_s.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>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>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><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">Basic CMSIS Example </div> </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><p>A typical example for using the CMSIS layer is provided below. The example is based on a STM32F10x Device.</p>
<div class="fragment"><div class="line"><span class="preprocessor">#include <stm32f10x.h></span> <span class="comment">// File name depends on device used</span></div>
<div class="line"> </div>
<div class="line">uint32_t <span class="keyword">volatile</span> msTicks; <span class="comment">// Counter for millisecond Interval</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> SysTick_Handler (<span class="keywordtype">void</span>) { <span class="comment">// SysTick Interrupt Handler</span></div>
<div class="line"> msTicks++; <span class="comment">// Increment Counter</span></div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> WaitForTick (<span class="keywordtype">void</span>) {</div>
<div class="line"> uint32_t curTicks;</div>
<div class="line"> </div>
<div class="line"> curTicks = msTicks; <span class="comment">// Save Current SysTick Value</span></div>
<div class="line"> <span class="keywordflow">while</span> (msTicks == curTicks) { <span class="comment">// Wait for next SysTick Interrupt</span></div>
<div class="line"> <a class="code" href="group__intrinsic___c_p_u__gr.html#gad3efec76c3bfa2b8528ded530386c563" title="Wait For Event.">__WFE</a> (); <span class="comment">// Power-Down until next Event/Interrupt</span></div>
<div class="line"> }</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> TIM1_UP_IRQHandler (<span class="keywordtype">void</span>) { <span class="comment">// Timer Interrupt Handler</span></div>
<div class="line"> ; <span class="comment">// Add user code here</span></div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> timer1_init(<span class="keywordtype">int</span> frequency) { <span class="comment">// Set up Timer (device specific)</span></div>
<div class="line"> <a class="code" href="group___n_v_i_c__gr.html#ga5bb7f43ad92937c039dee3d36c3c2798" title="Set the priority for an interrupt.">NVIC_SetPriority</a> (TIM1_UP_IRQn, 1); <span class="comment">// Set Timer priority</span></div>
<div class="line"> <a class="code" href="group___n_v_i_c__gr.html#ga530ad9fda2ed1c8b70e439ecfe80591f" title="Enable an external interrupt.">NVIC_EnableIRQ</a> (TIM1_UP_IRQn); <span class="comment">// Enable Timer Interrupt</span></div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> Device_Initialization (<span class="keywordtype">void</span>) { <span class="comment">// Configure & Initialize MCU</span></div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="group___sys_tick__gr.html#gabe47de40e9b0ad465b752297a9d9f427" title="System Tick Timer Configuration.">SysTick_Config</a> (<a class="code" href="group__system__init__gr.html#gaa3cd3e43291e81e795d642b79b6088e6" title="Variable to hold the system core clock value.">SystemCoreClock</a> / 1000)) { <span class="comment">// SysTick 1mSec</span></div>
<div class="line"> : <span class="comment">// Handle Error </span></div>
<div class="line"> }</div>
<div class="line"> timer1_init (); <span class="comment">// setup device-specific timer</span></div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">// The processor clock is initialized by CMSIS startup + system file</span></div>
<div class="line"><span class="keywordtype">void</span> main (<span class="keywordtype">void</span>) { <span class="comment">// user application starts here</span></div>
<div class="line"> Device_Initialization (); <span class="comment">// Configure & Initialize MCU</span></div>
<div class="line"> <span class="keywordflow">while</span> (1) { <span class="comment">// Endless Loop (the Super-Loop)</span></div>
<div class="line"> <a class="code" href="group___core___register__gr.html#gaeb8e5f7564a8ea23678fe3c987b04013" title="Globally disables interrupts and configurable fault handlers.">__disable_irq</a> (); <span class="comment">// Disable all interrupts</span></div>
<div class="line"> Get_InputValues (); <span class="comment">// Read Values</span></div>
<div class="line"> <a class="code" href="group___core___register__gr.html#ga0f98dfbd252b89d12564472dbeba9c27" title="Globally enables interrupts and configurable fault handlers.">__enable_irq</a> (); <span class="comment">// Enable all interrupts </span></div>
<div class="line"> Calculation_Response (); <span class="comment">// Calculate Results</span></div>
<div class="line"> Output_Response (); <span class="comment">// Output Results</span></div>
<div class="line"> WaitForTick (); <span class="comment">// Synchronize to SysTick Timer</span></div>
<div class="line"> }</div>
<div class="line">}</div>
</div><!-- fragment --> </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="_using_pg.html">Using CMSIS in Embedded Applications</a></li>
<li class="footer">Generated on Tue Oct 27 2015 14:35:21 for CMSIS-CORE by ARM Ltd. All rights reserved.
<!--
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.2
-->
</li>
</ul>
</div>
</body>
</html>
|
