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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
|
<!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>Peripheral Access</title>
<title>CMSIS-CORE: Peripheral Access</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><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('group__peripheral__gr.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="summary">
<a href="#define-members">Macros</a> </div>
<div class="headertitle">
<div class="title">Peripheral Access</div> </div>
</div><!--header-->
<div class="contents">
<p>Describes naming conventions, requirements, and optional features for accessing peripherals.
<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:ga286e3b913dbd236c7f48ea70c8821f4e"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__peripheral__gr.html#ga286e3b913dbd236c7f48ea70c8821f4e">_VAL2FLD</a>(field, value)</td></tr>
<tr class="memdesc:ga286e3b913dbd236c7f48ea70c8821f4e"><td class="mdescLeft"> </td><td class="mdescRight">Mask and shift a bit field value for assigning to result to a peripheral register. <a href="#ga286e3b913dbd236c7f48ea70c8821f4e"></a><br/></td></tr>
<tr class="separator:ga286e3b913dbd236c7f48ea70c8821f4e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga139b6e261c981f014f386927ca4a8444"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__peripheral__gr.html#ga139b6e261c981f014f386927ca4a8444">_FLD2VAL</a>(field, value)</td></tr>
<tr class="memdesc:ga139b6e261c981f014f386927ca4a8444"><td class="mdescLeft"> </td><td class="mdescRight">Extract from a peripheral register value the a bit field value. <a href="#ga139b6e261c981f014f386927ca4a8444"></a><br/></td></tr>
<tr class="separator:ga139b6e261c981f014f386927ca4a8444"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<p>The section below describes the naming conventions, requirements, and optional features for accessing device specific peripherals. Most of the rules also apply to the core peripherals. The <a class="el" href="device_h_pg.html">Device Header File <device.h></a> contains typically these definition and also includes the core specific header files.</p>
<p>Most of the definitions can be generated using the <a href="../../SVD/html/index.html"><b>CMSIS-SVD</b></a> System View Description for Peripherals. Refer to <a href="../../SVD/html/svd__s_v_d_conv_pg.html"><b>SVDConv.exe</b></a> for more information.</p>
<p>Each peripheral provides a data type definition with a name that is composed of:</p>
<ul>
<li>prefix <b><<em>device abbreviation></em>_</b></li>
<li><b><<em>peripheral name</em>></b></li>
<li>postfix <b>_Type</b> or <b>_TypeDef</b> to identify a type definition.</li>
</ul>
<p>Example: <b>LPC_UART_TypeDef</b> for the device <b>LPC</b> and the peripheral <b>UART</b>.</p>
<p>The data type definition uses standard C data types defined by the ANSI C header file <stdint.h>.</p>
<ul>
<li>IO Type Qualifiers are used to specify the access to peripheral variables. <table class="doxtable">
<tr>
<th align="left">IO Type Qualifier </th><th align="left">Type </th><th align="left">Description</th></tr>
<tr>
<td align="left"><b>__IM</b> </td><td align="left">Struct member </td><td align="left">Defines 'read only' permissions </td></tr>
<tr>
<td align="left"><b>__OM</b> </td><td align="left">Struct member </td><td align="left">Defines 'write only' permissions </td></tr>
<tr>
<td align="left"><b>__IOM</b> </td><td align="left">Struct member </td><td align="left">Defines 'read / write' permissions </td></tr>
<tr>
<td align="left"><b>__I</b> </td><td align="left">Scalar variable </td><td align="left">Defines 'read only' permissions </td></tr>
<tr>
<td align="left"><b>__O</b> </td><td align="left">Scalar variable </td><td align="left">Defines 'write only' permissions </td></tr>
<tr>
<td align="left"><b>__IO</b> </td><td align="left">Scalar variable </td><td align="left">Defines 'read / write' permissions </td></tr>
</table>
</li>
</ul>
<dl class="section note"><dt>Note</dt><dd><b>__IM</b>, <b>__OM</b>, <b>__IOM</b> are added in CMSIS-Core V4.20 to enhance support for C++. Prior version used <b>__I</b>, <b>__O</b>, <b>__IO</b> also for struct member definitions.</dd></dl>
<p>The typedef <b><<em>device abbreviation</em>>_UART_TypeDef</b> shown below defines the generic register layout for all UART channels in a device.</p>
<div class="fragment"><div class="line"><span class="keyword">typedef</span> <span class="keyword">struct</span></div>
<div class="line">{</div>
<div class="line"> <span class="keyword">union </span>{</div>
<div class="line"> __IM uint8_t RBR; <span class="comment">/* Offset: 0x000 (R/ ) Receiver Buffer Register */</span></div>
<div class="line"> __OM uint8_t THR; <span class="comment">/* Offset: 0x000 ( /W) Transmit Holding Register */</span></div>
<div class="line"> __IOM uint8_t DLL; <span class="comment">/* Offset: 0x000 (R/W) Divisor Latch LSB */</span></div>
<div class="line"> uint32_t RESERVED0;</div>
<div class="line"> };</div>
<div class="line"> <span class="keyword">union </span>{</div>
<div class="line"> __IOM uint8_t DLM; <span class="comment">/* Offset: 0x004 (R/W) Divisor Latch MSB */</span></div>
<div class="line"> __IOM uint32_t IER; <span class="comment">/* Offset: 0x004 (R/W) Interrupt Enable Register */</span></div>
<div class="line"> };</div>
<div class="line"> <span class="keyword">union </span>{</div>
<div class="line"> __IM uint32_t IIR; <span class="comment">/* Offset: 0x008 (R/ ) Interrupt ID Register */</span></div>
<div class="line"> __OM uint8_t FCR; <span class="comment">/* Offset: 0x008 ( /W) FIFO Control Register */</span></div>
<div class="line"> };</div>
<div class="line"> __IOM uint8_t LCR; <span class="comment">/* Offset: 0x00C (R/W) Line Control Register */</span></div>
<div class="line"> uint8_t RESERVED1[7];</div>
<div class="line"> __IM uint8_t LSR; <span class="comment">/* Offset: 0x014 (R/ ) Line Status Register */</span></div>
<div class="line"> uint8_t RESERVED2[7];</div>
<div class="line"> __IOM uint8_t SCR; <span class="comment">/* Offset: 0x01C (R/W) Scratch Pad Register */</span></div>
<div class="line"> uint8_t RESERVED3[3];</div>
<div class="line"> __IOM uint32_t ACR; <span class="comment">/* Offset: 0x020 (R/W) Autobaud Control Register */</span></div>
<div class="line"> __IOM uint8_t ICR; <span class="comment">/* Offset: 0x024 (R/W) IrDA Control Register */</span></div>
<div class="line"> uint8_t RESERVED4[3];</div>
<div class="line"> __IOM uint8_t FDR; <span class="comment">/* Offset: 0x028 (R/W) Fractional Divider Register */</span></div>
<div class="line"> uint8_t RESERVED5[7];</div>
<div class="line"> __IOM uint8_t TER; <span class="comment">/* Offset: 0x030 (R/W) Transmit Enable Register */</span></div>
<div class="line"> uint8_t RESERVED6[39];</div>
<div class="line"> __IM uint8_t FIFOLVL; <span class="comment">/* Offset: 0x058 (R/ ) FIFO Level Register */</span></div>
<div class="line">} LPC_UART_TypeDef;</div>
</div><!-- fragment --><p>To access the registers of the UART defined above, pointers to this register structure are defined. If more instances of a peripheral exist, the variables have a postfix (digit or letter) that identifies the peripheral.</p>
<p><b>Example:</b> In this example <b>LPC_UART2</b> and <b>LPC_UART3</b> are two pointers to UARTs defined with above register structure. <br/>
</p>
<div class="fragment"><div class="line"><span class="preprocessor">#define LPC_UART2 ((LPC_UART_TypeDef *) LPC_UART2_BASE )</span></div>
<div class="line"><span class="preprocessor">#define LPC_UART3 ((LPC_UART_TypeDef *) LPC_UART3_BASE )</span></div>
</div><!-- fragment --><p>The registers in the various UARTs can now be referred in the user code as shown below:<br/>
</p>
<div class="fragment"><div class="line">val = LPC_UART2->DR <span class="comment">// is the data register of UART1.</span></div>
</div><!-- fragment --><hr/>
<h1><a class="anchor" id="core_cmsis_pal_min_reqs"></a>
Minimal Requirements</h1>
<p>To access the peripheral registers and related function in a device, the files <b><em>device.h</em></b> and <b>core_cm<em>#</em>.h</b> define as a minimum: <br/>
<br/>
</p>
<ul>
<li>The <b>Register Layout Typedef</b> for each peripheral that defines all register names. RESERVED is used to introduce space into the structure for adjusting the addresses of the peripheral registers. <br/>
<br/>
<b>Example:</b> <div class="fragment"><div class="line"><span class="keyword">typedef</span> <span class="keyword">struct</span></div>
<div class="line">{</div>
<div class="line"> __IOM uint32_t CTRL; <span class="comment">/* Offset: 0x000 (R/W) SysTick Control and Status Register */</span></div>
<div class="line"> __IOM uint32_t LOAD; <span class="comment">/* Offset: 0x004 (R/W) SysTick Reload Value Register */</span></div>
<div class="line"> __IOM uint32_t VAL; <span class="comment">/* Offset: 0x008 (R/W) SysTick Current Value Register */</span></div>
<div class="line"> __IM uint32_t CALIB; <span class="comment">/* Offset: 0x00C (R/ ) SysTick Calibration Register */</span></div>
<div class="line">} <a class="code" href="struct_sys_tick___type.html" title="Structure type to access the System Timer (SysTick).">SysTick_Type</a>;</div>
</div><!-- fragment --></li>
</ul>
<ul>
<li><b>Base Address</b> for each peripheral (in case of multiple peripherals that use the same <b>register layout typedef</b> multiple base addresses are defined). <br/>
<br/>
<b>Example:</b> <div class="fragment"><div class="line"><span class="preprocessor">#define SysTick_BASE (SCS_BASE + 0x0010) </span><span class="comment">/* SysTick Base Address */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></li>
</ul>
<ul>
<li><b>Access Definitions</b> for each peripheral. In case of multiple peripherals that are using the same <b>register layout typdef</b>, multiple access definitions exist (LPC_UART0, LPC_UART2). <br/>
<br/>
<b>Example:</b> <div class="fragment"><div class="line"><span class="preprocessor">#define SysTick ((SysTick_Type *) Systick_BASE) </span><span class="comment">/* SysTick access definition */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></li>
</ul>
<p>These definitions allow accessing peripheral registers with simple assignments.</p>
<ul>
<li><b>Example:</b> <br/>
<div class="fragment"><div class="line">SysTick->CTRL = 0;</div>
</div><!-- fragment --></li>
</ul>
<hr/>
<h1><a class="anchor" id="core_cmsis_pal_opts"></a>
Optional Features</h1>
<p>Optionally, the file <b><em>device</em>.h</b> may define:</p>
<ul>
<li><a class="el" href="group__peripheral__gr.html#core_cmsis_pal_bitfields">Register Bit Fields</a> and #define constants that simplify access to peripheral registers. These constants may define bit-positions or other specific patterns that are required for programming peripheral registers. The identifiers should start with <b><<em>device abbreviation</em>>_</b> and <b><<em>peripheral name</em>>_</b>. It is recommended to use CAPITAL letters for #define constants.</li>
</ul>
<ul>
<li>More complex functions (i.e. status query before a sending register is accessed). Again, these functions start with <b><<em>device abbreviation</em>>_</b> and <b><<em>peripheral name</em>>_</b>.</li>
</ul>
<hr/>
<h1><a class="anchor" id="core_cmsis_pal_bitfields"></a>
Register Bit Fields</h1>
<p>For Core Register, macros define the position and the mask value for a bit field. It is recommended to create such definitions also for other peripheral registers.</p>
<p><b>Example:</b></p>
<p>Bit field definitions for register CPUID in SCB (System Control Block).</p>
<div class="fragment"><div class="line"><span class="comment">/* SCB CPUID Register Definitions */</span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_IMPLEMENTER_Pos 24U </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_IMPLEMENTER_Msk (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_VARIANT_Pos 20U </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_VARIANT_Msk (0xFUL << SCB_CPUID_VARIANT_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_ARCHITECTURE_Pos 16U </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_ARCHITECTURE_Msk (0xFUL << SCB_CPUID_ARCHITECTURE_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_PARTNO_Pos 4U </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_PARTNO_Msk (0xFFFUL << SCB_CPUID_PARTNO_Pos) </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_REVISION_Pos 0U </span></div>
<div class="line"><span class="preprocessor">#define SCB_CPUID_REVISION_Msk (0xFUL </span><span class="comment">/*<< SCB_CPUID_REVISION_Pos*/</span><span class="preprocessor">) </span></div>
</div><!-- fragment --><p>The macros <b><a class="el" href="group__peripheral__gr.html#ga286e3b913dbd236c7f48ea70c8821f4e" title="Mask and shift a bit field value for assigning to result to a peripheral register.">_VAL2FLD(field, value)</a></b> and <b><a class="el" href="group__peripheral__gr.html#ga139b6e261c981f014f386927ca4a8444" title="Extract from a peripheral register value the a bit field value.">_FLD2VAL(field, value)</a></b> enable access to bit fields. </p>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="ga139b6e261c981f014f386927ca4a8444"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define _FLD2VAL</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">field, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">value </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">field</td><td>name of bit field. </td></tr>
<tr><td class="paramname">value</td><td>value of the register</td></tr>
</table>
</dd>
</dl>
<p>The macro <a class="el" href="group__peripheral__gr.html#ga139b6e261c981f014f386927ca4a8444">_FLD2VAL</a> uses the #define's <em>_Pos</em> and <em>_Msk</em> of the related bit field to extract the value of a bit field from a register.</p>
<p><b>Example:</b> </p>
<div class="fragment"><div class="line"><span class="keywordtype">id</span> = = <a class="code" href="group__peripheral__gr.html#ga139b6e261c981f014f386927ca4a8444" title="Extract from a peripheral register value the a bit field value.">_FLD2VAL</a>(SCB_CPUID_REVISION, SCB->CPUID);</div>
</div><!-- fragment -->
</div>
</div>
<a class="anchor" id="ga286e3b913dbd236c7f48ea70c8821f4e"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define _VAL2FLD</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">field, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">value </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">field</td><td>name of bit field. </td></tr>
<tr><td class="paramname">value</td><td>value for the bit field.</td></tr>
</table>
</dd>
</dl>
<p>The macro <a class="el" href="group__peripheral__gr.html#ga286e3b913dbd236c7f48ea70c8821f4e">_VAL2FLD</a> uses the #define's <em>_Pos</em> and <em>_Msk</em> of the related bit field to shift bit-field values for assigning to a register.</p>
<p><b>Example:</b> </p>
<div class="fragment"><div class="line">SCB->CPUID = <a class="code" href="group__peripheral__gr.html#ga286e3b913dbd236c7f48ea70c8821f4e" title="Mask and shift a bit field value for assigning to result to a peripheral register.">_VAL2FLD</a>(SCB_CPUID_REVISION, 0x3) | <a class="code" href="group__peripheral__gr.html#ga286e3b913dbd236c7f48ea70c8821f4e" title="Mask and shift a bit field value for assigning to result to a peripheral register.">_VAL2FLD</a>(SCB_CPUID_VARIANT, 0x3);</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 14:35:21 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>
|
