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<li class="navelem"><a class="el" href="dir_9609623a411adcd586e91350a30aa9d5.html">MCU_STM32F4xx_Matlab</a></li><li class="navelem"><a class="el" href="dir_afe59ba76eea2f90e4e37233dbf4f6f2.html">Drivers</a></li><li class="navelem"><a class="el" href="dir_30f2d142c55236add84215456f0e2b1c.html">CMSIS</a></li> </ul>
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<div class="headertitle"><div class="title">system_stm32f4xx.h</div></div>
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<a href="system__stm32f4xx_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span> </div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#ifndef __SYSTEM_STM32F4XX_H</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#define __SYSTEM_STM32F4XX_H</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#ifdef __cplusplus</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#endif </span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="comment">/* This variable is updated in three ways:</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment"> 1) by calling CMSIS function SystemCoreClockUpdate()</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment"> 2) by calling HAL API function HAL_RCC_GetSysClockFreq()</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment"> 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency </span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment"> Note: If you use this function to configure the system clock; then there</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment"> is no need to call the 2 first functions listed above, since SystemCoreClock</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="comment"> variable is updated automatically.</span></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="keyword">extern</span> <a class="code hl_typedef" href="stdint_8h.html#a435d1572bf3f880d55459d9805097f62">uint32_t</a> <a class="code hl_variable" href="group___s_t_m32_f4xx___system___exported__types.html#gaa3cd3e43291e81e795d642b79b6088e6">SystemCoreClock</a>; </div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="keyword">extern</span> <span class="keyword">const</span> <a class="code hl_typedef" href="stdint_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> <a class="code hl_variable" href="group___s_t_m32_f4xx___system___exported__types.html#ga6e1d9cd666f0eacbfde31e9932a93466">AHBPrescTable</a>[16]; </div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword">extern</span> <span class="keyword">const</span> <a class="code hl_typedef" href="stdint_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> <a class="code hl_variable" href="group___s_t_m32_f4xx___system___exported__types.html#ga5b4f8b768465842cf854a8f993b375e9">APBPrescTable</a>[8]; </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"><a class="line" href="group___s_t_m32_f4xx___system___exported___functions.html#ga93f514700ccf00d08dbdcff7f1224eb2"> 86</a></span><span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code hl_function" href="group___s_t_m32_f4xx___system___exported___functions.html#ga93f514700ccf00d08dbdcff7f1224eb2">SystemInit</a>(<span class="keywordtype">void</span>);</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"><a class="line" href="group___s_t_m32_f4xx___system___exported___functions.html#gae0c36a9591fe6e9c45ecb21a794f0f0f"> 87</a></span><span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code hl_function" href="group___s_t_m32_f4xx___system___exported___functions.html#gae0c36a9591fe6e9c45ecb21a794f0f0f">SystemCoreClockUpdate</a>(<span class="keywordtype">void</span>);</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="preprocessor">#ifdef __cplusplus</span></div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>}</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="preprocessor">#endif </span><span class="comment">/*__SYSTEM_STM32F4XX_H */</span><span class="preprocessor"></span></div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
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<div class="ttc" id="agroup___s_t_m32_f4xx___system___exported___functions_html_ga93f514700ccf00d08dbdcff7f1224eb2"><div class="ttname"><a href="group___s_t_m32_f4xx___system___exported___functions.html#ga93f514700ccf00d08dbdcff7f1224eb2">SystemInit</a></div><div class="ttdeci">void SystemInit(void)</div></div>
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<div class="ttc" id="agroup___s_t_m32_f4xx___system___exported___functions_html_gae0c36a9591fe6e9c45ecb21a794f0f0f"><div class="ttname"><a href="group___s_t_m32_f4xx___system___exported___functions.html#gae0c36a9591fe6e9c45ecb21a794f0f0f">SystemCoreClockUpdate</a></div><div class="ttdeci">void SystemCoreClockUpdate(void)</div></div>
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<div class="ttc" id="agroup___s_t_m32_f4xx___system___exported__types_html_ga5b4f8b768465842cf854a8f993b375e9"><div class="ttname"><a href="group___s_t_m32_f4xx___system___exported__types.html#ga5b4f8b768465842cf854a8f993b375e9">APBPrescTable</a></div><div class="ttdeci">const uint8_t APBPrescTable[8]</div></div>
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<div class="ttc" id="agroup___s_t_m32_f4xx___system___exported__types_html_ga6e1d9cd666f0eacbfde31e9932a93466"><div class="ttname"><a href="group___s_t_m32_f4xx___system___exported__types.html#ga6e1d9cd666f0eacbfde31e9932a93466">AHBPrescTable</a></div><div class="ttdeci">const uint8_t AHBPrescTable[16]</div></div>
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<div class="ttc" id="agroup___s_t_m32_f4xx___system___exported__types_html_gaa3cd3e43291e81e795d642b79b6088e6"><div class="ttname"><a href="group___s_t_m32_f4xx___system___exported__types.html#gaa3cd3e43291e81e795d642b79b6088e6">SystemCoreClock</a></div><div class="ttdeci">uint32_t SystemCoreClock</div></div>
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<div class="ttc" id="astdint_8h_html_a435d1572bf3f880d55459d9805097f62"><div class="ttname"><a href="stdint_8h.html#a435d1572bf3f880d55459d9805097f62">uint32_t</a></div><div class="ttdeci">unsigned int uint32_t</div><div class="ttdef"><b>Definition</b> stdint.h:64</div></div>
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<div class="ttc" id="astdint_8h_html_aba7bc1797add20fe3efdf37ced1182c5"><div class="ttname"><a href="stdint_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a></div><div class="ttdeci">unsigned char uint8_t</div><div class="ttdef"><b>Definition</b> stdint.h:62</div></div>
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