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  111. <div class="title">Startup File startup_&lt;device&gt;.c </div>  </div>
    112. 

  112. </div><!--header-->
    113. 

  113. <div class="contents">
    114. 

  114. <div class="textblock"><p>The <a class="el" href="startup_c_pg.html">Startup File startup_&lt;device&gt;.c</a> contains:</p>
    115. 

  115. <ul>
    116. 

  116. <li>The reset handler which is executed after CPU reset and typically calls the <a class="el" href="group__system__init__gr.html#ga93f514700ccf00d08dbdcff7f1224eb2">SystemInit</a> function.</li>
    117. 

  117. <li>The setup values for the Main Stack Pointer (MSP).</li>
    118. 

  118. <li>Exception vectors of the Cortex-M Processor with weak functions that implement default routines.</li>
    119. 

  119. <li>Interrupt vectors that are device specific with weak functions that implement default routines.</li>
    120. 

  120. </ul>
    121. 

  121. <p>The file exists for each supported toolchain and is the only tool-chain specific CMSIS file.</p>
    122. 

  122. <p>To adapt the file to a new device only the interrupt vector table needs to be extended with the device-specific interrupt handlers. The naming convention for the interrupt handler names are &lt;interrupt_name&gt;_IRQHandler. This table needs to be consistent with <a class="el" href="group__NVIC__gr.html#ga7e1129cd8a196f4284d41db3e82ad5c8">IRQn_Type</a> that defines all the IRQ numbers for each interrupt.</p>
    123. 

  123. <p><b>Example:</b> </p>
    124. 

  124. <p>The following example shows the extension of the interrupt vector table for the LPC1100 device family.</p>
    125. 

  125. <div class="fragment"><div class="line"><span class="comment">/*----------------------------------------------------------------------------</span></div>
    126. 

  126. <div class="line"><span class="comment">  Exception / Interrupt Handler</span></div>
    127. 

  127. <div class="line"><span class="comment"> *----------------------------------------------------------------------------*/</span></div>
    128. 

  128. <div class="line"><span class="comment">/* Exceptions */</span></div>
    129. 

  129. <div class="line"><span class="keywordtype">void</span> WAKEUP0_IRQHandler     (<span class="keywordtype">void</span>) __attribute__ ((weak, alias(&quot;Default_Handler&quot;)));</div>
    130. 

  130. <div class="line"><span class="keywordtype">void</span> WAKEUP1_IRQHandler     (<span class="keywordtype">void</span>) __attribute__ ((weak, alias(&quot;Default_Handler&quot;)));</div>
    131. 

  131. <div class="line"><span class="keywordtype">void</span> WAKEUP2_IRQHandler     (<span class="keywordtype">void</span>) __attribute__ ((weak, alias(&quot;Default_Handler&quot;)));</div>
    132. 

  132. <div class="line"><span class="comment">// :</span></div>
    133. 

  133. <div class="line"><span class="comment">// :</span></div>
    134. 

  134. <div class="line"><span class="keywordtype">void</span> EINT1_IRQHandler       (<span class="keywordtype">void</span>) __attribute__ ((weak, alias(&quot;Default_Handler&quot;)));</div>
    135. 

  135. <div class="line"><span class="keywordtype">void</span> EINT2_IRQHandler       (<span class="keywordtype">void</span>) __attribute__ ((weak, alias(&quot;Default_Handler&quot;)));</div>
    136. 

  136. <div class="line"><span class="comment">// :</span></div>
    137. 

  137. <div class="line"><span class="comment">// :</span></div>
    138. 

  138. <div class="line"></div>
    139. 

  139. <div class="line"><span class="comment">/*----------------------------------------------------------------------------</span></div>
    140. 

  140. <div class="line"><span class="comment">  Exception / Interrupt Vector table</span></div>
    141. 

  141. <div class="line"><span class="comment"> *----------------------------------------------------------------------------*/</span></div>
    142. 

  142. <div class="line">extern const pFunc __VECTOR_TABLE[240];</div>
    143. 

  143. <div class="line">       const pFunc __VECTOR_TABLE[240] <a class="code" href="group__compiler__conntrol__gr.html#ga4f65c96effa79fbd610fea43ee7d745b">__VECTOR_TABLE_ATTRIBUTE</a> = {</div>
    144. 

  144. <div class="line">  (pFunc)(&amp;<a class="code" href="group__compiler__conntrol__gr.html#ga1002e751427b1189f92787d4e4eef965">__INITIAL_SP</a>),                   <span class="comment">/*     Initial Stack Pointer */</span></div>
    145. 

  145. <div class="line">  Reset_Handler,                            <span class="comment">/*     Reset Handler */</span></div>
    146. 

  146. <div class="line">  NMI_Handler,                              <span class="comment">/* -14 NMI Handler */</span></div>
    147. 

  147. <div class="line">  HardFault_Handler,                        <span class="comment">/* -13 Hard Fault Handler */</span></div>
    148. 

  148. <div class="line">  MemManage_Handler,                        <span class="comment">/* -12 MPU Fault Handler */</span></div>
    149. 

  149. <div class="line">  BusFault_Handler,                         <span class="comment">/* -11 Bus Fault Handler */</span></div>
    150. 

  150. <div class="line">  UsageFault_Handler,                       <span class="comment">/* -10 Usage Fault Handler */</span></div>
    151. 

  151. <div class="line">  0,                                        <span class="comment">/*     Reserved */</span></div>
    152. 

  152. <div class="line">  0,                                        <span class="comment">/*     Reserved */</span></div>
    153. 

  153. <div class="line">  0,                                        <span class="comment">/*     Reserved */</span></div>
    154. 

  154. <div class="line">  0,                                        <span class="comment">/*     Reserved */</span></div>
    155. 

  155. <div class="line">  SVC_Handler,                              <span class="comment">/*  -5 SVCall Handler */</span></div>
    156. 

  156. <div class="line">  DebugMon_Handler,                         <span class="comment">/*  -4 Debug Monitor Handler */</span></div>
    157. 

  157. <div class="line">  0,                                        <span class="comment">/*     Reserved */</span></div>
    158. 

  158. <div class="line">  PendSV_Handler,                           <span class="comment">/*  -2 PendSV Handler */</span></div>
    159. 

  159. <div class="line">  SysTick_Handler,                          <span class="comment">/*  -1 SysTick Handler */</span></div>
    160. 

  160. <div class="line"></div>
    161. 

  161. <div class="line">  <span class="comment">/* Interrupts */</span></div>
    162. 

  162. <div class="line">  WAKEUP0_IRQHandler,                       <span class="comment">/*   0 Wakeup PIO0.0 */</span></div>
    163. 

  163. <div class="line">  WAKEUP1_IRQHandler,                       <span class="comment">/*   1 Wakeup PIO0.1 */</span></div>
    164. 

  164. <div class="line">  WAKEUP2_IRQHandler,                       <span class="comment">/*   2 Wakeup PIO0.2 */</span></div>
    165. 

  165. <div class="line">  <span class="comment">// :</span></div>
    166. 

  166. <div class="line">  <span class="comment">// :</span></div>
    167. 

  167. <div class="line">  EINT1_IRQHandler,                         <span class="comment">/*  30 PIO INT1 */</span></div>
    168. 

  168. <div class="line">  EINT2_IRQHandler,                         <span class="comment">/*  31 PIO INT2 */</span></div>
    169. 

  169. <div class="line">  <span class="comment">// :</span></div>
    170. 

  170. <div class="line">  <span class="comment">// :</span></div>
    171. 

  171. <div class="line">};</div>
    172. 

  172. </div><!-- fragment --><h1><a class="anchor" id="startup_c_sec"></a>
    173. 

  173. startup_Device.c Template File</h1>
    174. 

  174. <p>A compiler agnostic <a class="el" href="startup_c_pg.html#startup_c_sec">startup_Device.c Template File</a> for an Armv7-M processor like Cortex-M3 is shown below. The C startup file relys on certain compiler specific preprocessor defines specified in CMSIS compiler headers:</p>
    175. 

  175. <ul>
    176. 

  176. <li><a class="el" href="group__compiler__conntrol__gr.html#ga1002e751427b1189f92787d4e4eef965">__INITIAL_SP</a></li>
    177. 

  177. <li><a class="el" href="group__compiler__conntrol__gr.html#ga84b0bad4aa39632d3faea46aa1e102a8">__STACK_LIMIT</a></li>
    178. 

  178. <li><a class="el" href="group__compiler__conntrol__gr.html#ga72db8b026c5e100254080fefabd9fd88">__PROGRAM_START</a></li>
    179. 

  179. <li><a class="el" href="group__compiler__conntrol__gr.html#gab94ebeb20055f1848d7b707d3c7cfc5d">__VECTOR_TABLE</a></li>
    180. 

  180. <li><a class="el" href="group__compiler__conntrol__gr.html#ga4f65c96effa79fbd610fea43ee7d745b">__VECTOR_TABLE_ATTRIBUTE</a></li>
    181. 

  181. </ul>
    182. 

  182. <pre class="fragment">/******************************************************************************
    183. 

  183.  * @file     startup_Device.c
    184. 

  184.  * @brief    CMSIS-Core(M) Device Startup File for &lt;Device&gt;
    185. 

  185.  * @version  V2.0.0
    186. 

  186.  * @date     20. May 2019
    187. 

  187.  ******************************************************************************/
    188. 

  188. /*
    189. 

  189.  * Copyright (c) 2009-2019 Arm Limited. All rights reserved.
    190. 

  190.  *
    191. 

  191.  * SPDX-License-Identifier: Apache-2.0
    192. 

  192.  *
    193. 

  193.  * Licensed under the Apache License, Version 2.0 (the License); you may
    194. 

  194.  * not use this file except in compliance with the License.
    195. 

  195.  * You may obtain a copy of the License at
    196. 

  196.  *
    197. 

  197.  * www.apache.org/licenses/LICENSE-2.0
    198. 

  198.  *
    199. 

  199.  * Unless required by applicable law or agreed to in writing, software
    200. 

  200.  * distributed under the License is distributed on an AS IS BASIS, WITHOUT
    201. 

  201.  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    202. 

  202.  * See the License for the specific language governing permissions and
    203. 

  203.  * limitations under the License.
    204. 

  204.  */
    205. 

  205. 

  206. #include "&lt;Device&gt;.h"
    207. 

  207. 

  208. /*----------------------------------------------------------------------------
    209. 

  209.   Exception / Interrupt Handler Function Prototype
    210. 

  210.  *----------------------------------------------------------------------------*/
    211. 

  211. typedef void( *pFunc )( void );
    212. 

  212. 

  213. /*----------------------------------------------------------------------------
    214. 

  214.   External References
    215. 

  215.  *----------------------------------------------------------------------------*/
    216. 

  216. extern uint32_t __INITIAL_SP;
    217. 

  217. 

  218. extern __NO_RETURN void __PROGRAM_START(void);
    219. 

  219. 

  220. /*----------------------------------------------------------------------------
    221. 

  221.   Internal References
    222. 

  222.  *----------------------------------------------------------------------------*/
    223. 

  223. void __NO_RETURN Default_Handler(void);
    224. 

  224. void __NO_RETURN Reset_Handler  (void);
    225. 

  225. 

  226. /*----------------------------------------------------------------------------
    227. 

  227.   Exception / Interrupt Handler
    228. 

  228.  *----------------------------------------------------------------------------*/
    229. 

  229. /* Exceptions */
    230. 

  230. void NMI_Handler            (void) __attribute__ ((weak, alias("Default_Handler")));
    231. 

  231. void HardFault_Handler      (void) __attribute__ ((weak, alias("Default_Handler")));
    232. 

  232. void MemManage_Handler      (void) __attribute__ ((weak, alias("Default_Handler")));
    233. 

  233. void BusFault_Handler       (void) __attribute__ ((weak, alias("Default_Handler")));
    234. 

  234. void UsageFault_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    235. 

  235. void SVC_Handler            (void) __attribute__ ((weak, alias("Default_Handler")));
    236. 

  236. void DebugMon_Handler       (void) __attribute__ ((weak, alias("Default_Handler")));
    237. 

  237. void PendSV_Handler         (void) __attribute__ ((weak, alias("Default_Handler")));
    238. 

  238. void SysTick_Handler        (void) __attribute__ ((weak, alias("Default_Handler")));
    239. 

  239. 

  240. void Interrupt0_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    241. 

  241. void Interrupt1_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    242. 

  242. void Interrupt2_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    243. 

  243. void Interrupt3_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    244. 

  244. void Interrupt4_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    245. 

  245. void Interrupt5_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    246. 

  246. void Interrupt6_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    247. 

  247. void Interrupt7_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    248. 

  248. void Interrupt8_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    249. 

  249. void Interrupt9_Handler     (void) __attribute__ ((weak, alias("Default_Handler")));
    250. 

  250. 

  251. 

  252. /*----------------------------------------------------------------------------
    253. 

  253.   Exception / Interrupt Vector table
    254. 

  254.  *----------------------------------------------------------------------------*/
    255. 

  255. extern const pFunc __VECTOR_TABLE[240];
    256. 

  256.        const pFunc __VECTOR_TABLE[240] __VECTOR_TABLE_ATTRIBUTE = {
    257. 

  257.   (pFunc)(&amp;__INITIAL_SP),                   /*     Initial Stack Pointer */
    258. 

  258.   Reset_Handler,                            /*     Reset Handler */
    259. 

  259.   NMI_Handler,                              /* -14 NMI Handler */
    260. 

  260.   HardFault_Handler,                        /* -13 Hard Fault Handler */
    261. 

  261.   MemManage_Handler,                        /* -12 MPU Fault Handler */
    262. 

  262.   BusFault_Handler,                         /* -11 Bus Fault Handler */
    263. 

  263.   UsageFault_Handler,                       /* -10 Usage Fault Handler */
    264. 

  264.   0,                                        /*     Reserved */
    265. 

  265.   0,                                        /*     Reserved */
    266. 

  266.   0,                                        /*     Reserved */
    267. 

  267.   0,                                        /*     Reserved */
    268. 

  268.   SVC_Handler,                              /*  -5 SVCall Handler */
    269. 

  269.   DebugMon_Handler,                         /*  -4 Debug Monitor Handler */
    270. 

  270.   0,                                        /*     Reserved */
    271. 

  271.   PendSV_Handler,                           /*  -2 PendSV Handler */
    272. 

  272.   SysTick_Handler,                          /*  -1 SysTick Handler */
    273. 

  273. 

  274.   /* Interrupts */
    275. 

  275.   Interrupt0_Handler,                       /*   0 Interrupt 0 */
    276. 

  276.   Interrupt1_Handler,                       /*   1 Interrupt 1 */
    277. 

  277.   Interrupt2_Handler,                       /*   2 Interrupt 2 */
    278. 

  278.   Interrupt3_Handler,                       /*   3 Interrupt 3 */
    279. 

  279.   Interrupt4_Handler,                       /*   4 Interrupt 4 */
    280. 

  280.   Interrupt5_Handler,                       /*   5 Interrupt 5 */
    281. 

  281.   Interrupt6_Handler,                       /*   6 Interrupt 6 */
    282. 

  282.   Interrupt7_Handler,                       /*   7 Interrupt 7 */
    283. 

  283.   Interrupt8_Handler,                       /*   8 Interrupt 8 */
    284. 

  284.   Interrupt9_Handler                        /*   9 Interrupt 9 */
    285. 

  285.                                             /* Interrupts 10 .. 223 are left out */
    286. 

  286. };
    287. 

  287. 

  288. /*----------------------------------------------------------------------------
    289. 

  289.   Reset Handler called on controller reset
    290. 

  290.  *----------------------------------------------------------------------------*/
    291. 

  291. void Reset_Handler(void)
    292. 

  292. {
    293. 

  293.   SystemInit();                             /* CMSIS System Initialization */
    294. 

  294.   __PROGRAM_START();                        /* Enter PreMain (C library entry point) */
    295. 

  295. }
    296. 

  296. 

  297. /*----------------------------------------------------------------------------
    298. 

  298.   Default Handler for Exceptions / Interrupts
    299. 

  299.  *----------------------------------------------------------------------------*/
    300. 

  300. void Default_Handler(void)
    301. 

  301. {
    302. 

  302.   while(1);
    303. 

  303. }
    304. 

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