begriffs open source - cmsis/blob - main/Core/group__mpu__functions.html

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 131 <a href="#func-members">Functions</a>  </div>
 132   <div class="headertitle"><div class="title">MPU Functions for Armv6-M/v7-M</div></div>
 133 </div><!--header-->
 134 <div class="contents">
 135
 136 <p>Functions that relate to the Memory Protection Unit.
 137 <a href="#details">More...</a></p>
 138 <table class="memberdecls">
 139 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="groups" name="groups"></a>
 140 Content</h2></td></tr>
 141 <tr class="memitem:group__mpu__defines"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__defines.html">Define values</a></td></tr>
 142 <tr class="memdesc:group__mpu__defines"><td class="mdescLeft">&#160;</td><td class="mdescRight">Define values for MPU region setup. <br /></td></tr>
 143 <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
 144 </table><table class="memberdecls">
 145 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
 146 Data Structures</h2></td></tr>
 147 <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structARM__MPU__Region__t.html">ARM_MPU_Region_t</a></td></tr>
 148 <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Setup information of a single MPU Region.  <a href="structARM__MPU__Region__t.html#details">More...</a><br /></td></tr>
 149 <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structMPU__Type.html">MPU_Type</a></td></tr>
 151 <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Structure type to access the Memory Protection Unit (MPU).  <a href="structMPU__Type.html#details">More...</a><br /></td></tr>
 152 <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
 153 </table><table class="memberdecls">
 154 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
 155 Macros</h2></td></tr>
 156 <tr class="memitem:ga96b93785c92e2dbcb3a2356c25bf2adc"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(DisableExec,  AccessPermission,  TypeExtField,  IsShareable,  IsCacheable,  IsBufferable,  SubRegionDisable,  Size)</td></tr>
 157 <tr class="memdesc:ga96b93785c92e2dbcb3a2356c25bf2adc"><td class="mdescLeft">&#160;</td><td class="mdescRight">MPU Region Attribute and Size Register Value.  <br /></td></tr>
 158 <tr class="separator:ga96b93785c92e2dbcb3a2356c25bf2adc"><td class="memSeparator" colspan="2">&#160;</td></tr>
 159 <tr class="memitem:ga332ed5f8969dd4df6b61c6ae32ec36dc"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga332ed5f8969dd4df6b61c6ae32ec36dc">ARM_MPU_RASR_EX</a>(DisableExec,  AccessPermission,  AccessAttributes,  SubRegionDisable,  Size)</td></tr>
 160 <tr class="memdesc:ga332ed5f8969dd4df6b61c6ae32ec36dc"><td class="mdescLeft">&#160;</td><td class="mdescRight">MPU Region Attribute and Size Register Value.  <br /></td></tr>
 161 <tr class="separator:ga332ed5f8969dd4df6b61c6ae32ec36dc"><td class="memSeparator" colspan="2">&#160;</td></tr>
 162 <tr class="memitem:ga3fead12dc24a6d00ad53f55a042486ca"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(Region,  BaseAddress)</td></tr>
 163 <tr class="memdesc:ga3fead12dc24a6d00ad53f55a042486ca"><td class="mdescLeft">&#160;</td><td class="mdescRight">MPU Region Base Address Register Value.  <br /></td></tr>
 164 <tr class="separator:ga3fead12dc24a6d00ad53f55a042486ca"><td class="memSeparator" colspan="2">&#160;</td></tr>
 165 </table><table class="memberdecls">
 166 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
 167 Functions</h2></td></tr>
 168 <tr class="memitem:ga9dcb0afddf4ac351f33f3c7a5169c62c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga9dcb0afddf4ac351f33f3c7a5169c62c">ARM_MPU_ClrRegion</a> (uint32_t rnr)</td></tr>
 169 <tr class="separator:ga9dcb0afddf4ac351f33f3c7a5169c62c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 170 <tr class="memitem:ga7cbc0a4a066ed90e85c8176228235d57"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga7cbc0a4a066ed90e85c8176228235d57">ARM_MPU_Disable</a> ()</td></tr>
 171 <tr class="separator:ga7cbc0a4a066ed90e85c8176228235d57"><td class="memSeparator" colspan="2">&#160;</td></tr>
 172 <tr class="memitem:ga31406efd492ec9a091a70ffa2d8a42fb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga31406efd492ec9a091a70ffa2d8a42fb">ARM_MPU_Enable</a> (uint32_t MPU_CTRL)</td></tr>
 173 <tr class="memdesc:ga31406efd492ec9a091a70ffa2d8a42fb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Enable the memory protection unit (MPU) and.  <br /></td></tr>
 174 <tr class="separator:ga31406efd492ec9a091a70ffa2d8a42fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
 175 <tr class="memitem:gafa27b26d5847fa8e465584e376b6078a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#gafa27b26d5847fa8e465584e376b6078a">ARM_MPU_Load</a> (MPU_Region_t const *table, uint32_t cnt)</td></tr>
 176 <tr class="separator:gafa27b26d5847fa8e465584e376b6078a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 177 <tr class="memitem:gac1a949403bf84eecaf407003fb553ae7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#gac1a949403bf84eecaf407003fb553ae7">ARM_MPU_OrderedMemcpy</a> (volatile uint32_t *dst, const uint32_t *<a class="el" href="group__compiler__conntrol__gr.html#ga378ac21329d33f561f90265eef89f564">__RESTRICT</a> src, uint32_t len)</td></tr>
 178 <tr class="separator:gac1a949403bf84eecaf407003fb553ae7"><td class="memSeparator" colspan="2">&#160;</td></tr>
 179 <tr class="memitem:ga16931f9ad84d7289e8218e169ae6db5d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga16931f9ad84d7289e8218e169ae6db5d">ARM_MPU_SetRegion</a> (uint32_t rbar, uint32_t rasr)</td></tr>
 180 <tr class="separator:ga16931f9ad84d7289e8218e169ae6db5d"><td class="memSeparator" colspan="2">&#160;</td></tr>
 181 <tr class="memitem:ga042ba1a6a1a58795231459ac0410b809"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mpu__functions.html#ga042ba1a6a1a58795231459ac0410b809">ARM_MPU_SetRegionEx</a> (uint32_t rnr, uint32_t rbar, uint32_t rasr)</td></tr>
 182 <tr class="separator:ga042ba1a6a1a58795231459ac0410b809"><td class="memSeparator" colspan="2">&#160;</td></tr>
 183 </table>
 184 <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
 185 <p>Functions that relate to the Memory Protection Unit. </p>
 186 <p>The following functions support the optional Memory Protection Unit (MPU) that is available on the Cortex-M0+, M3, M4 and M7 processor.</p>
 187 <p>The MPU is used to prevent from illegal memory accesses that are typically caused by errors in an application software.</p>
 188 <p><b>Example:</b> </p><div class="fragment"><div class="line"><span class="keywordtype">int</span> main() </div>
 189 <div class="line">{</div>
 190 <div class="line">  <span class="comment">// Set Region 0</span></div>
 191 <div class="line">  <a class="code hl_function" href="group__mpu__functions.html#ga042ba1a6a1a58795231459ac0410b809">ARM_MPU_SetRegionEx</a>(0UL, 0x08000000UL, <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(0UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_1MB));</div>
 192 <div class="line">  </div>
 193 <div class="line">  <a class="code hl_function" href="group__mpu__functions.html#ga31406efd492ec9a091a70ffa2d8a42fb">ARM_MPU_Enable</a>(0);</div>
 194 <div class="line">  </div>
 195 <div class="line">  <span class="comment">// Execute application code that is access protected by the MPU</span></div>
 196 <div class="line">  </div>
 197 <div class="line">  <a class="code hl_function" href="group__mpu__functions.html#ga7cbc0a4a066ed90e85c8176228235d57">ARM_MPU_Disable</a>();</div>
 198 <div class="line">}</div>
 199 <div class="ttc" id="agroup__mpu__functions_html_ga042ba1a6a1a58795231459ac0410b809"><div class="ttname"><a href="group__mpu__functions.html#ga042ba1a6a1a58795231459ac0410b809">ARM_MPU_SetRegionEx</a></div><div class="ttdeci">__STATIC_INLINE void ARM_MPU_SetRegionEx(uint32_t rnr, uint32_t rbar, uint32_t rasr)</div></div>
 200 <div class="ttc" id="agroup__mpu__functions_html_ga31406efd492ec9a091a70ffa2d8a42fb"><div class="ttname"><a href="group__mpu__functions.html#ga31406efd492ec9a091a70ffa2d8a42fb">ARM_MPU_Enable</a></div><div class="ttdeci">__STATIC_INLINE void ARM_MPU_Enable(uint32_t MPU_CTRL)</div><div class="ttdoc">Enable the memory protection unit (MPU) and.</div></div>
 201 <div class="ttc" id="agroup__mpu__functions_html_ga7cbc0a4a066ed90e85c8176228235d57"><div class="ttname"><a href="group__mpu__functions.html#ga7cbc0a4a066ed90e85c8176228235d57">ARM_MPU_Disable</a></div><div class="ttdeci">__STATIC_INLINE void ARM_MPU_Disable()</div></div>
 202 <div class="ttc" id="agroup__mpu__functions_html_ga96b93785c92e2dbcb3a2356c25bf2adc"><div class="ttname"><a href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a></div><div class="ttdeci">#define ARM_MPU_RASR(DisableExec, AccessPermission, TypeExtField, IsShareable, IsCacheable, IsBufferable, SubRegionDisable, Size)</div><div class="ttdoc">MPU Region Attribute and Size Register Value.</div><div class="ttdef"><b>Definition:</b> ref_mpu.txt:59</div></div>
 203 </div><!-- fragment --> <h2 class="groupheader">Macro Definition Documentation</h2>
 204 <a id="ga96b93785c92e2dbcb3a2356c25bf2adc" name="ga96b93785c92e2dbcb3a2356c25bf2adc"></a>
 205 <h2 class="memtitle"><span class="permalink"><a href="#ga96b93785c92e2dbcb3a2356c25bf2adc">&#9670;&#160;</a></span>ARM_MPU_RASR</h2>
 206
 207 <div class="memitem">
 208 <div class="memproto">
 209       <table class="memname">
 210         <tr>
 211           <td class="memname">#define ARM_MPU_RASR</td>
 212           <td>(</td>
 213           <td class="paramtype">&#160;</td>
 214           <td class="paramname">DisableExec, </td>
 215         </tr>
 216         <tr>
 217           <td class="paramkey"></td>
 218           <td></td>
 219           <td class="paramtype">&#160;</td>
 220           <td class="paramname">AccessPermission, </td>
 221         </tr>
 222         <tr>
 223           <td class="paramkey"></td>
 224           <td></td>
 225           <td class="paramtype">&#160;</td>
 226           <td class="paramname">TypeExtField, </td>
 227         </tr>
 228         <tr>
 229           <td class="paramkey"></td>
 230           <td></td>
 231           <td class="paramtype">&#160;</td>
 232           <td class="paramname">IsShareable, </td>
 233         </tr>
 234         <tr>
 235           <td class="paramkey"></td>
 236           <td></td>
 237           <td class="paramtype">&#160;</td>
 238           <td class="paramname">IsCacheable, </td>
 239         </tr>
 240         <tr>
 241           <td class="paramkey"></td>
 242           <td></td>
 243           <td class="paramtype">&#160;</td>
 244           <td class="paramname">IsBufferable, </td>
 245         </tr>
 246         <tr>
 247           <td class="paramkey"></td>
 248           <td></td>
 249           <td class="paramtype">&#160;</td>
 250           <td class="paramname">SubRegionDisable, </td>
 251         </tr>
 252         <tr>
 253           <td class="paramkey"></td>
 254           <td></td>
 255           <td class="paramtype">&#160;</td>
 256           <td class="paramname">Size&#160;</td>
 257         </tr>
 258         <tr>
 259           <td></td>
 260           <td>)</td>
 261           <td></td><td></td>
 262         </tr>
 263       </table>
 264 </div><div class="memdoc">
 265
 266 <p>MPU Region Attribute and Size Register Value. </p>
 267 <p>This macro is used to construct a valid <a class="el" href="structMPU__Type.html#a8f00c4a5e31b0a8d103ed3b0732c17a3">RASR</a> value. The ENABLE bit of the RASR value is implicitly set to 1.</p>
 268 <dl class="params"><dt>Parameters</dt><dd>
 269   <table class="params">
 270     <tr><td class="paramname">DisableExec</td><td>Instruction access disable bit. 1 = disable instruction fetches. </td></tr>
 271     <tr><td class="paramname">AccessPermission</td><td>Data access permission configures read/write access for User and Privileged mode. Possible values see <a class="el" href="group__mpu__defines.html#gabc4788126d7798469cb862a08d3050cc">ARM_MPU_AP_xxx</a>. </td></tr>
 272     <tr><td class="paramname">TypeExtField</td><td>Type extension field, allows you to configure memory access type, for example strongly ordered, peripheral. </td></tr>
 273     <tr><td class="paramname">IsShareable</td><td>1 = region is shareable between multiple bus masters. </td></tr>
 274     <tr><td class="paramname">IsCacheable</td><td>1 = region is cacheable (values may be kept in cache). </td></tr>
 275     <tr><td class="paramname">IsBufferable</td><td>1 = region is bufferable (when using write-back caching). Cacheable but non-bufferable regions use write-through policy. </td></tr>
 276     <tr><td class="paramname">SubRegionDisable</td><td>Sub-region disable field (8 bits). </td></tr>
 277     <tr><td class="paramname">Size</td><td>Region size with values defined under <a class="el" href="group__mpu__defines.html#gadb0a92c0928c113120567e85ff1ba05c">ARM_MPU_REGION_SIZE_xxx</a>. </td></tr>
 278   </table>
 279   </dd>
 280 </dl>
 281
 282 </div>
 283 </div>
 284 <a id="ga332ed5f8969dd4df6b61c6ae32ec36dc" name="ga332ed5f8969dd4df6b61c6ae32ec36dc"></a>
 285 <h2 class="memtitle"><span class="permalink"><a href="#ga332ed5f8969dd4df6b61c6ae32ec36dc">&#9670;&#160;</a></span>ARM_MPU_RASR_EX</h2>
 286
 287 <div class="memitem">
 288 <div class="memproto">
 289       <table class="memname">
 290         <tr>
 291           <td class="memname">#define ARM_MPU_RASR_EX</td>
 292           <td>(</td>
 293           <td class="paramtype">&#160;</td>
 294           <td class="paramname">DisableExec, </td>
 295         </tr>
 296         <tr>
 297           <td class="paramkey"></td>
 298           <td></td>
 299           <td class="paramtype">&#160;</td>
 300           <td class="paramname">AccessPermission, </td>
 301         </tr>
 302         <tr>
 303           <td class="paramkey"></td>
 304           <td></td>
 305           <td class="paramtype">&#160;</td>
 306           <td class="paramname">AccessAttributes, </td>
 307         </tr>
 308         <tr>
 309           <td class="paramkey"></td>
 310           <td></td>
 311           <td class="paramtype">&#160;</td>
 312           <td class="paramname">SubRegionDisable, </td>
 313         </tr>
 314         <tr>
 315           <td class="paramkey"></td>
 316           <td></td>
 317           <td class="paramtype">&#160;</td>
 318           <td class="paramname">Size&#160;</td>
 319         </tr>
 320         <tr>
 321           <td></td>
 322           <td>)</td>
 323           <td></td><td></td>
 324         </tr>
 325       </table>
 326 </div><div class="memdoc">
 327
 328 <p>MPU Region Attribute and Size Register Value. </p>
 329 <p>This macro is used to construct a valid <a class="el" href="structMPU__Type.html#a8f00c4a5e31b0a8d103ed3b0732c17a3">RASR</a> value. The ENABLE bit of the RASR value is implicitly set to 1.</p>
 330 <dl class="params"><dt>Parameters</dt><dd>
 331   <table class="params">
 332     <tr><td class="paramname">DisableExec</td><td>Instruction access disable bit, 1= disable instruction fetches. </td></tr>
 333     <tr><td class="paramname">AccessPermission</td><td>Data access permission configures read/write access for User and Privileged mode. Possible values see <a class="el" href="group__mpu__defines.html#gabc4788126d7798469cb862a08d3050cc">ARM_MPU_AP_xxx</a>. </td></tr>
 334     <tr><td class="paramname">AccessAttributes</td><td>Memory access attribution, see <a class="el" href="group__mpu__defines.html#ga71d41084e984be70a23cb640fd89d1e2">ARM_MPU_ACCESS_xxx</a>. </td></tr>
 335     <tr><td class="paramname">SubRegionDisable</td><td>Sub-region disable field (8 bits). </td></tr>
 336     <tr><td class="paramname">Size</td><td>Region size with values defined under <a class="el" href="group__mpu__defines.html#gadb0a92c0928c113120567e85ff1ba05c">ARM_MPU_REGION_SIZE_xxx</a>. </td></tr>
 337   </table>
 338   </dd>
 339 </dl>
 340
 341 </div>
 342 </div>
 343 <a id="ga3fead12dc24a6d00ad53f55a042486ca" name="ga3fead12dc24a6d00ad53f55a042486ca"></a>
 344 <h2 class="memtitle"><span class="permalink"><a href="#ga3fead12dc24a6d00ad53f55a042486ca">&#9670;&#160;</a></span>ARM_MPU_RBAR</h2>
 345
 346 <div class="memitem">
 347 <div class="memproto">
 348       <table class="memname">
 349         <tr>
 350           <td class="memname">#define ARM_MPU_RBAR</td>
 351           <td>(</td>
 352           <td class="paramtype">&#160;</td>
 353           <td class="paramname">Region, </td>
 354         </tr>
 355         <tr>
 356           <td class="paramkey"></td>
 357           <td></td>
 358           <td class="paramtype">&#160;</td>
 359           <td class="paramname">BaseAddress&#160;</td>
 360         </tr>
 361         <tr>
 362           <td></td>
 363           <td>)</td>
 364           <td></td><td></td>
 365         </tr>
 366       </table>
 367 </div><div class="memdoc">
 368
 369 <p>MPU Region Base Address Register Value. </p>
 370 <p>This preprocessor function can be used to construct a valid <a class="el" href="structMPU__Type.html#a990c609b26d990b8ba832b110adfd353">RBAR</a> value. The VALID bit is implicitly set to 1.</p>
 371 <dl class="params"><dt>Parameters</dt><dd>
 372   <table class="params">
 373     <tr><td class="paramname">Region</td><td>The region to be configured, number 0 to 15. </td></tr>
 374     <tr><td class="paramname">BaseAddress</td><td>The base address for the region. </td></tr>
 375   </table>
 376   </dd>
 377 </dl>
 378
 379 </div>
 380 </div>
 381 <h2 class="groupheader">Function Documentation</h2>
 382 <a id="ga9dcb0afddf4ac351f33f3c7a5169c62c" name="ga9dcb0afddf4ac351f33f3c7a5169c62c"></a>
 383 <h2 class="memtitle"><span class="permalink"><a href="#ga9dcb0afddf4ac351f33f3c7a5169c62c">&#9670;&#160;</a></span>ARM_MPU_ClrRegion()</h2>
 384
 385 <div class="memitem">
 386 <div class="memproto">
 387       <table class="memname">
 388         <tr>
 389           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_ClrRegion </td>
 390           <td>(</td>
 391           <td class="paramtype">uint32_t&#160;</td>
 392           <td class="paramname"><em>rnr</em></td><td>)</td>
 393           <td></td>
 394         </tr>
 395       </table>
 396 </div><div class="memdoc">
 397 <p>Clear and disable the given MPU region. </p><dl class="params"><dt>Parameters</dt><dd>
 398   <table class="params">
 399     <tr><td class="paramname">rnr</td><td>Region number to be cleared. </td></tr>
 400   </table>
 401   </dd>
 402 </dl>
 403
 404 </div>
 405 </div>
 406 <a id="ga7cbc0a4a066ed90e85c8176228235d57" name="ga7cbc0a4a066ed90e85c8176228235d57"></a>
 407 <h2 class="memtitle"><span class="permalink"><a href="#ga7cbc0a4a066ed90e85c8176228235d57">&#9670;&#160;</a></span>ARM_MPU_Disable()</h2>
 408
 409 <div class="memitem">
 410 <div class="memproto">
 411       <table class="memname">
 412         <tr>
 413           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_Disable </td>
 414           <td>(</td>
 415           <td class="paramname"></td><td>)</td>
 416           <td></td>
 417         </tr>
 418       </table>
 419 </div><div class="memdoc">
 420 <p>Disable the MPU. </p>
 421
 422 </div>
 423 </div>
 424 <a id="ga31406efd492ec9a091a70ffa2d8a42fb" name="ga31406efd492ec9a091a70ffa2d8a42fb"></a>
 425 <h2 class="memtitle"><span class="permalink"><a href="#ga31406efd492ec9a091a70ffa2d8a42fb">&#9670;&#160;</a></span>ARM_MPU_Enable()</h2>
 426
 427 <div class="memitem">
 428 <div class="memproto">
 429       <table class="memname">
 430         <tr>
 431           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_Enable </td>
 432           <td>(</td>
 433           <td class="paramtype">uint32_t&#160;</td>
 434           <td class="paramname"><em>MPU_CTRL</em></td><td>)</td>
 435           <td></td>
 436         </tr>
 437       </table>
 438 </div><div class="memdoc">
 439
 440 <p>Enable the memory protection unit (MPU) and. </p>
 441 <dl class="params"><dt>Parameters</dt><dd>
 442   <table class="params">
 443     <tr><td class="paramname">MPU_CTRL</td><td>Additional control settings that configure MPU behaviour</td></tr>
 444   </table>
 445   </dd>
 446 </dl>
 447 <p>The function <a class="el" href="group__mpu__functions.html#ga31406efd492ec9a091a70ffa2d8a42fb">ARM_MPU_Enable</a> writes to the register <a class="el" href="structMPU__Type.html#a769178ef949f0d5d8f18ddbd9e4e926f">MPU-&gt;CTRL</a> and sets bit ENABLE. The parameter <em>MPU_CTRL</em> provides additional bit values (see table below) that configure the MPU behaviour. For processors that implement an <b>MPU Fault Handler</b> the <a class="el" href="group__NVIC__gr.html">MemoryManagement_IRQn</a> exception is enabled by setting the bit MEMFAULTACT in register SBC-&gt;SHCSR.</p>
 448 <p>The following table contains possible values for the parameter <em>MPU_CTRL</em> that set specific bits in register MPU-&gt;CTRL. </p><table class="markdownTable">
 449 <tr class="markdownTableHead">
 450 <th class="markdownTableHeadLeft">Bit   </th><th class="markdownTableHeadLeft">MPU_CTRL value   </th><th class="markdownTableHeadLeft">When applied   </th><th class="markdownTableHeadLeft">When not applied    </th></tr>
 451 <tr class="markdownTableRowOdd">
 452 <td class="markdownTableBodyLeft">1   </td><td class="markdownTableBodyLeft">MPU_CTRL_HFNMIENA_Msk   </td><td class="markdownTableBodyLeft">Enable MPU during hard fault, NMI, and FAULTMASK handlers execution   </td><td class="markdownTableBodyLeft">Disable MPU during hard fault, NMI, and FAULTMASK handler execution    </td></tr>
 453 <tr class="markdownTableRowEven">
 454 <td class="markdownTableBodyLeft">2   </td><td class="markdownTableBodyLeft">MPU_CTRL_PRIVDEFENA_Msk   </td><td class="markdownTableBodyLeft">Enable default memory map as a background region for privileged access   </td><td class="markdownTableBodyLeft">Use only MPU region settings   </td></tr>
 455 </table>
 456 <p><b>Example:</b></p>
 457 <div class="fragment"><div class="line"><span class="comment">// enable MPU with all region definitions. Exceptions are not protected by MPU.</span></div>
 458 <div class="line">  MPU_Enable (0);</div>
 459 <div class="line">  </div>
 460 <div class="line"><span class="comment">// enable MPU with all region definitions and background regions for privileged access. Exceptions are protected by MPU.</span></div>
 461 <div class="line">  MPU_Enable (MPU_CTRL_PRIVDEFENA_Msk | MPU_CTRL_HFNMIENA_Msk);</div>
 462 </div><!-- fragment -->
 463 </div>
 464 </div>
 465 <a id="gafa27b26d5847fa8e465584e376b6078a" name="gafa27b26d5847fa8e465584e376b6078a"></a>
 466 <h2 class="memtitle"><span class="permalink"><a href="#gafa27b26d5847fa8e465584e376b6078a">&#9670;&#160;</a></span>ARM_MPU_Load()</h2>
 467
 468 <div class="memitem">
 469 <div class="memproto">
 470       <table class="memname">
 471         <tr>
 472           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_Load </td>
 473           <td>(</td>
 474           <td class="paramtype">MPU_Region_t const *&#160;</td>
 475           <td class="paramname"><em>table</em>, </td>
 476         </tr>
 477         <tr>
 478           <td class="paramkey"></td>
 479           <td></td>
 480           <td class="paramtype">uint32_t&#160;</td>
 481           <td class="paramname"><em>cnt</em>&#160;</td>
 482         </tr>
 483         <tr>
 484           <td></td>
 485           <td>)</td>
 486           <td></td><td></td>
 487         </tr>
 488       </table>
 489 </div><div class="memdoc">
 490 <p>Load the given number of MPU regions from a table. </p><dl class="params"><dt>Parameters</dt><dd>
 491   <table class="params">
 492     <tr><td class="paramname">table</td><td>Pointer to the MPU configuration table. </td></tr>
 493     <tr><td class="paramname">cnt</td><td>Number of regions to be configured.</td></tr>
 494   </table>
 495   </dd>
 496 </dl>
 497 <dl class="section note"><dt>Note</dt><dd>only up to 16 regions can be handled as the function <a class="el" href="group__mpu__functions.html#gafa27b26d5847fa8e465584e376b6078a">ARM_MPU_Load</a> uses the REGION field in <a class="el" href="structMPU__Type.html#a990c609b26d990b8ba832b110adfd353">MPU-&gt;RBAR</a>.</dd></dl>
 498 <p><b>Example:</b> </p><div class="fragment"><div class="line"><span class="keyword">const</span> <a class="code hl_struct" href="structARM__MPU__Region__t.html">ARM_MPU_Region_t</a> mpuTable[3][4] = {</div>
 499 <div class="line">  {</div>
 500 <div class="line">    { .<a class="code hl_variable" href="structARM__MPU__Region__t.html#afe7a7721aa08988d915670efa432cdd2">RBAR</a> = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(0UL, 0x08000000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(0UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_1MB)  },</div>
 501 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(1UL, 0x20000000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_32KB) },</div>
 502 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(2UL, 0x40020000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 2UL, 0UL, 0UL, 0UL, 0x00UL, ARM_MPU_REGION_SIZE_8KB)  }, </div>
 503 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(3UL, 0x40022000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 2UL, 0UL, 0UL, 0UL, 0xC0UL, ARM_MPU_REGION_SIZE_4KB)  }</div>
 504 <div class="line">  },</div>
 505 <div class="line">  {</div>
 506 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(4UL, 0x08000000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(0UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_1MB)  },</div>
 507 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(5UL, 0x20000000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_32KB) },</div>
 508 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(6UL, 0x40020000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 2UL, 0UL, 0UL, 0UL, 0x00UL, ARM_MPU_REGION_SIZE_8KB)  }, </div>
 509 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(7UL, 0x40022000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 2UL, 0UL, 0UL, 0UL, 0xC0UL, ARM_MPU_REGION_SIZE_4KB)  }</div>
 510 <div class="line">  },</div>
 511 <div class="line">  {</div>
 512 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(4UL, 0x18000000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(0UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_1MB)  },</div>
 513 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(5UL, 0x30000000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 0UL, 0UL, 1UL, 1UL, 0x00UL, ARM_MPU_REGION_SIZE_32KB) },</div>
 514 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(6UL, 0x50020000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 2UL, 0UL, 0UL, 0UL, 0x00UL, ARM_MPU_REGION_SIZE_8KB)  }, </div>
 515 <div class="line">    { .RBAR = <a class="code hl_define" href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a>(7UL, 0x50022000UL), .RASR = <a class="code hl_define" href="group__mpu__functions.html#ga96b93785c92e2dbcb3a2356c25bf2adc">ARM_MPU_RASR</a>(1UL, ARM_MPU_AP_FULL, 2UL, 0UL, 0UL, 0UL, 0xC0UL, ARM_MPU_REGION_SIZE_4KB)  }</div>
 516 <div class="line">  }</div>
 517 <div class="line">};</div>
 518 <div class="line"> </div>
 519 <div class="line"><span class="keywordtype">void</span> UpdateMpu(uint32_t idx)</div>
 520 <div class="line">{</div>
 521 <div class="line">   <a class="code hl_function" href="group__mpu__functions.html#gafa27b26d5847fa8e465584e376b6078a">ARM_MPU_Load</a>(mpuTable[idx], 4);</div>
 522 <div class="line">}</div>
 523 <div class="ttc" id="agroup__mpu__functions_html_ga3fead12dc24a6d00ad53f55a042486ca"><div class="ttname"><a href="group__mpu__functions.html#ga3fead12dc24a6d00ad53f55a042486ca">ARM_MPU_RBAR</a></div><div class="ttdeci">#define ARM_MPU_RBAR(Region, BaseAddress)</div><div class="ttdoc">MPU Region Base Address Register Value.</div><div class="ttdef"><b>Definition:</b> ref_mpu.txt:41</div></div>
 524 <div class="ttc" id="agroup__mpu__functions_html_gafa27b26d5847fa8e465584e376b6078a"><div class="ttname"><a href="group__mpu__functions.html#gafa27b26d5847fa8e465584e376b6078a">ARM_MPU_Load</a></div><div class="ttdeci">__STATIC_INLINE void ARM_MPU_Load(MPU_Region_t const *table, uint32_t cnt)</div></div>
 525 <div class="ttc" id="astructARM__MPU__Region__t_html"><div class="ttname"><a href="structARM__MPU__Region__t.html">ARM_MPU_Region_t</a></div><div class="ttdoc">Setup information of a single MPU Region.</div><div class="ttdef"><b>Definition:</b> ref_mpu.txt:84</div></div>
 526 <div class="ttc" id="astructARM__MPU__Region__t_html_afe7a7721aa08988d915670efa432cdd2"><div class="ttname"><a href="structARM__MPU__Region__t.html#afe7a7721aa08988d915670efa432cdd2">ARM_MPU_Region_t::RBAR</a></div><div class="ttdeci">uint32_t RBAR</div><div class="ttdoc">The region base address register value (RBAR)</div><div class="ttdef"><b>Definition:</b> ref_mpu.txt:85</div></div>
 527 </div><!-- fragment -->
 528 </div>
 529 </div>
 530 <a id="gac1a949403bf84eecaf407003fb553ae7" name="gac1a949403bf84eecaf407003fb553ae7"></a>
 531 <h2 class="memtitle"><span class="permalink"><a href="#gac1a949403bf84eecaf407003fb553ae7">&#9670;&#160;</a></span>ARM_MPU_OrderedMemcpy()</h2>
 532
 533 <div class="memitem">
 534 <div class="memproto">
 535       <table class="memname">
 536         <tr>
 537           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_OrderedMemcpy </td>
 538           <td>(</td>
 539           <td class="paramtype">volatile uint32_t *&#160;</td>
 540           <td class="paramname"><em>dst</em>, </td>
 541         </tr>
 542         <tr>
 543           <td class="paramkey"></td>
 544           <td></td>
 545           <td class="paramtype">const uint32_t *<a class="el" href="group__compiler__conntrol__gr.html#ga378ac21329d33f561f90265eef89f564">__RESTRICT</a>&#160;</td>
 546           <td class="paramname"><em>src</em>, </td>
 547         </tr>
 548         <tr>
 549           <td class="paramkey"></td>
 550           <td></td>
 551           <td class="paramtype">uint32_t&#160;</td>
 552           <td class="paramname"><em>len</em>&#160;</td>
 553         </tr>
 554         <tr>
 555           <td></td>
 556           <td>)</td>
 557           <td></td><td></td>
 558         </tr>
 559       </table>
 560 </div><div class="memdoc">
 561 <p>Memcpy with strictly ordered memory access, e.g. used by code in <a class="el" href="group__mpu__functions.html#gafa27b26d5847fa8e465584e376b6078a">ARM_MPU_Load</a>. </p><dl class="params"><dt>Parameters</dt><dd>
 562   <table class="params">
 563     <tr><td class="paramname">dst</td><td>Destination data is copied to. </td></tr>
 564     <tr><td class="paramname">src</td><td>Source data is copied from. </td></tr>
 565     <tr><td class="paramname">len</td><td>Amount of data words to be copied. </td></tr>
 566   </table>
 567   </dd>
 568 </dl>
 569
 570 </div>
 571 </div>
 572 <a id="ga16931f9ad84d7289e8218e169ae6db5d" name="ga16931f9ad84d7289e8218e169ae6db5d"></a>
 573 <h2 class="memtitle"><span class="permalink"><a href="#ga16931f9ad84d7289e8218e169ae6db5d">&#9670;&#160;</a></span>ARM_MPU_SetRegion()</h2>
 574
 575 <div class="memitem">
 576 <div class="memproto">
 577       <table class="memname">
 578         <tr>
 579           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_SetRegion </td>
 580           <td>(</td>
 581           <td class="paramtype">uint32_t&#160;</td>
 582           <td class="paramname"><em>rbar</em>, </td>
 583         </tr>
 584         <tr>
 585           <td class="paramkey"></td>
 586           <td></td>
 587           <td class="paramtype">uint32_t&#160;</td>
 588           <td class="paramname"><em>rasr</em>&#160;</td>
 589         </tr>
 590         <tr>
 591           <td></td>
 592           <td>)</td>
 593           <td></td><td></td>
 594         </tr>
 595       </table>
 596 </div><div class="memdoc">
 597 <p>Configure an MPU region.</p>
 598 <p>The region number should be contained in the rbar value.</p>
 599 <dl class="params"><dt>Parameters</dt><dd>
 600   <table class="params">
 601     <tr><td class="paramname">rbar</td><td>Value for <a class="el" href="structMPU__Type.html#a990c609b26d990b8ba832b110adfd353">RBAR</a> register. </td></tr>
 602     <tr><td class="paramname">rasr</td><td>Value for <a class="el" href="structMPU__Type.html#a8f00c4a5e31b0a8d103ed3b0732c17a3">RASR</a> register. </td></tr>
 603   </table>
 604   </dd>
 605 </dl>
 606
 607 </div>
 608 </div>
 609 <a id="ga042ba1a6a1a58795231459ac0410b809" name="ga042ba1a6a1a58795231459ac0410b809"></a>
 610 <h2 class="memtitle"><span class="permalink"><a href="#ga042ba1a6a1a58795231459ac0410b809">&#9670;&#160;</a></span>ARM_MPU_SetRegionEx()</h2>
 611
 612 <div class="memitem">
 613 <div class="memproto">
 614       <table class="memname">
 615         <tr>
 616           <td class="memname"><a class="el" href="group__compiler__conntrol__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void ARM_MPU_SetRegionEx </td>
 617           <td>(</td>
 618           <td class="paramtype">uint32_t&#160;</td>
 619           <td class="paramname"><em>rnr</em>, </td>
 620         </tr>
 621         <tr>
 622           <td class="paramkey"></td>
 623           <td></td>
 624           <td class="paramtype">uint32_t&#160;</td>
 625           <td class="paramname"><em>rbar</em>, </td>
 626         </tr>
 627         <tr>
 628           <td class="paramkey"></td>
 629           <td></td>
 630           <td class="paramtype">uint32_t&#160;</td>
 631           <td class="paramname"><em>rasr</em>&#160;</td>
 632         </tr>
 633         <tr>
 634           <td></td>
 635           <td>)</td>
 636           <td></td><td></td>
 637         </tr>
 638       </table>
 639 </div><div class="memdoc">
 640 <p>Configure the given MPU region. </p><dl class="params"><dt>Parameters</dt><dd>
 641   <table class="params">
 642     <tr><td class="paramname">rnr</td><td>Region number to be configured. </td></tr>
 643     <tr><td class="paramname">rbar</td><td>Value for <a class="el" href="structMPU__Type.html#a990c609b26d990b8ba832b110adfd353">RBAR</a> register. </td></tr>
 644     <tr><td class="paramname">rasr</td><td>Value for <a class="el" href="structMPU__Type.html#a8f00c4a5e31b0a8d103ed3b0732c17a3">RASR</a> register. </td></tr>
 645   </table>
 646   </dd>
 647 </dl>
 648
 649 </div>
 650 </div>
 651 </div><!-- contents -->
 652 </div><!-- doc-content -->
 653 <!-- start footer part -->
 654 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
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