diff options
| author | [email protected] <[email protected]> | 2011-07-01 12:05:11 +0000 |
|---|---|---|
| committer | [email protected] <[email protected]> | 2011-07-01 12:05:11 +0000 |
| commit | 04c19da4abf544db2bab9de48b69b2cdbc4474ad (patch) | |
| tree | 6c417f98acdb655ad35e4434d2c08426642473a3 /bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST | |
| parent | 4102a54d087025f8a30ca1beb05168280e1d6d27 (diff) | |
add files.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1570 bbd45198-f89e-11dd-88c7-29a3b14d5316
Diffstat (limited to 'bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST')
| -rw-r--r-- | bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/Release_Notes.html | 284 | ||||
| -rw-r--r-- | bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/system_stm32f10x.c | 1094 |
2 files changed, 1378 insertions, 0 deletions
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+ <tr>
+ <td style="vertical-align: top;"><span style="font-size: 8pt; font-family: Arial; color: blue;"><a href="../../../../../../Release_Notes.html">Back to Release page</a></span></td>
+ </tr>
+<tr style="">
+<td style="padding: 1.5pt;">
+<h1 style="margin-bottom: 18pt; text-align: center;" align="center"><span style="font-size: 20pt; font-family: Verdana; color: rgb(51, 102, 255);">Release
+Notes for STM32F10x CMSIS</span><span style="font-size: 20pt; font-family: Verdana;"><o:p></o:p></span></h1>
+<p class="MsoNormal" style="text-align: center;" align="center"><span style="font-size: 10pt; font-family: Arial; color: black;">Copyright 2011 STMicroelectronics</span><span style="color: black;"><u1:p></u1:p><o:p></o:p></span></p>
+<p class="MsoNormal" style="text-align: center;" align="center"><span style="font-size: 10pt; font-family: Arial; color: black;"><img alt="" id="_x0000_i1025" src="../../../../../../_htmresc/logo.bmp" style="border: 0px solid ; width: 86px; height: 65px;"></span><span style="font-size: 10pt;"><o:p></o:p></span></p>
+</td>
+</tr>
+</tbody>
+</table>
+<p class="MsoNormal"><span style="font-family: Arial; display: none;"><o:p> </o:p></span></p>
+<table class="MsoNormalTable" style="width: 675pt;" border="0" cellpadding="0" width="900">
+<tbody>
+<tr>
+<td style="padding: 0cm;" valign="top">
+<h2 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial;"><span style="font-size: 12pt; color: white;">Contents<o:p></o:p></span></h2>
+<ol style="margin-top: 0cm;" start="1" type="1">
+<li class="MsoNormal" style="color: black; margin-top: 4.5pt; margin-bottom: 4.5pt;"><span style="font-size: 10pt; font-family: Verdana;"><a href="#History">STM32F10x CMSIS
+update History</a><o:p></o:p></span></li>
+<li class="MsoNormal" style="color: black; margin-top: 4.5pt; margin-bottom: 4.5pt;"><span style="font-size: 10pt; font-family: Verdana;"><a href="#License">License</a><o:p></o:p></span></li>
+</ol>
+<span style="font-family: "Times New Roman";"></span>
+<h2 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial;"><a name="History"></a><span style="font-size: 12pt; color: white;">STM32F10x CMSIS
+update History</span></h2><br>
+ <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 500pt; width: 167px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V3.5.0 / 11-March-2011<o:p></o:p></span></h3>
+ <p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
+Changes<o:p></o:p></span></u></b></p>
+
+ <ul style="margin-top: 0cm;" type="square">
+<li class="MsoNormal" style="color: black; margin-top: 4.5pt; margin-bottom: 4.5pt;"><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;">stm32f10x.h
+</span>and <span style="font-style: italic;">startup_stm32f10x_hd_vl.s</span> files: remove the FSMC interrupt
+definition for STM32F10x High-density Value line devices.<br>
+</span></li>
+ <li class="MsoNormal" style="color: black; margin-top: 4.5pt; margin-bottom: 4.5pt;"><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;">system_stm32f10x.c</span> file provided within the CMSIS folder. <br>
+</span></li>
+
+ </ul>
+
+ <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 558.05pt;"><span style="font-size: 10pt; font-family: Arial; color: white;">3.4.0
+- 10/15/2010</span></h3>
+
+ <ol>
+<li><b><i><span style="font-size: 10pt; font-family: Verdana;">General</span></i></b></li>
+ </ol>
+
+ <ul style="margin-top: 0in;" type="disc">
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add support
+for <b>STM32F10x High-density Value line devices</b>.</span></li>
+ </ul>
+ <ol start="2">
+ <li><b><i><span style="font-size: 10pt; font-family: Verdana;">STM32F10x CMSIS Device Peripheral Access Layer </span></i></b></li>
+ </ol>
+
+
+
+ <ul style="margin-top: 0in;" type="disc">
+<li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Cortex-M3 Device Peripheral Access Layer Header File:</span> <span style="font-weight: bold; font-style: italic;">stm32f10x.h</span></span><br>
+ </li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Update to support High-density Value line devices</span><span style="font-size: 10pt; font-family: Verdana;"></span></li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add new define <span style="font-style: italic;">STM32F10X_HD_VL</span></span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">RCC, AFIO, FSMC bits definition updated</span></li>
+</ul>
+ <li class="MsoNormal" style="">
+
+ <span style="font-size: 10pt; font-family: "Verdana","sans-serif";">All
+STM32 devices definitions are commented by default. User has to select the
+appropriate device before starting else an error will be signaled on compile
+time.</span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: "Verdana","sans-serif";">Add new IRQs definitons inside the IRQn_Type enumeration for STM23 High-density Value line devices.</span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: "Verdana","sans-serif";">"<span style="font-weight: bold;">bool</span>" type removed.</span><br>
+ <span style="font-size: 10pt; font-family: "Verdana","sans-serif";"></span></li>
+</ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Cortex-M3 Device Peripheral Access Layer System Files:</span> <span style="font-weight: bold; font-style: italic;">system_stm32f10x.h and system_stm32f10x.c</span></span><br>
+ <span style="font-size: 10pt; font-family: Verdana;"></span></li>
+ <ul>
+<li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="font-weight: bold; font-style: italic;">"system_stm32f10x.c" </span><span style="font-weight: bold;"></span>moved to to "<span style="font-weight: bold; font-style: italic;">STM32F10x_StdPeriph_Template</span>" directory. This file is also moved to each example directory under "<span style="font-weight: bold; font-style: italic;">STM32F10x_StdPeriph_Examples</span>".</span><br>
+<span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;"></span></span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;">SystemInit_ExtMemCtl() </span>function: update to support High-density Value line devices.</span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add "<span style="font-style: italic;">VECT_TAB_SRAM</span>" inside "</span><span style="font-size: 10pt; font-family: Verdana;"><span style="font-weight: bold; font-style: italic;">system_stm32f10x.c</span></span><span style="font-size: 10pt; font-family: Verdana;">"
+to select if the user want to place the Vector Table in internal SRAM.
+An additional define is also to specify the Vector Table offset "<span style="font-style: italic;">VECT_TAB_OFFSET</span>".<br>
+ </span></li>
+
+ </ul>
+<li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS startup files:</span></span><span style="font-size: 10pt; font-family: Verdana;"><span style="font-weight: bold; font-style: italic;">startup_stm32f10x_xx.s</span></span></li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add three
+startup files for STM32 High-density Value line devices:
+ <span style="font-weight: bold; font-style: italic;">startup_stm32f10x_hd_vl.s</span></span></li></ul>
+ </ul>
+ <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 558.05pt;"><span style="font-size: 10pt; font-family: Arial; color: white;">3.3.0
+- 04/16/2010</span></h3>
+
+<ol><li><b><i><span style="font-size: 10pt; font-family: Verdana;">General</span></i></b></li></ol>
+<ul style="margin-top: 0in;" type="disc"><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add support
+for <b>STM32F10x XL-density devices</b>.</span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add startup files for TrueSTUDIO toolchain<br></span></li></ul><ol start="2"><li><b><i><span style="font-size: 10pt; font-family: Verdana;">STM32F10x CMSIS Device Peripheral Access Layer </span></i></b></li></ol>
+
+ <ul style="margin-top: 0in;" type="disc"><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Cortex-M3 Device Peripheral Access Layer Header File:</span> <span style="font-weight: bold; font-style: italic;">stm32f10x.h</span></span><br>
+ </li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Update to support XL-density devices</span><span style="font-size: 10pt; font-family: Verdana;"></span></li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add new define <span style="font-style: italic;">STM32F10X_XL</span></span></li></ul><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add new IRQs for </span><span style="font-size: 10pt; font-family: Verdana;">TIM9..14</span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Update FLASH_TypeDef structure</span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add new IP instances TIM9..14</span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">RCC, AFIO, DBGMCU bits definition updated</span></li></ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Correct IRQs definition for MD-, LD-, MD_VL- and LD_VL-density devices (remove comma "," at the end of enum list)<br></span></li></ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Cortex-M3 Device Peripheral Access Layer System Files:</span> <span style="font-weight: bold; font-style: italic;">system_stm32f10x.h and system_stm32f10x.c</span></span><br>
+ <span style="font-size: 10pt; font-family: Verdana;"></span></li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;">SystemInit_ExtMemCtl() </span>function: update to support XL-density devices</span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;">SystemInit()</span> function: swap the order of SetSysClock() and SystemInit_ExtMemCtl() functions. </span><span style="font-size: 10pt; font-family: Verdana;"><br>
+ </span></li></ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS startup files:</span><span style="font-weight: bold; font-style: italic;"></span><span style="font-style: italic;"><span style="font-weight: bold;"></span></span></span></li><ul><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">add three
+startup files for STM32 XL-density devices:
+ <span style="font-weight: bold; font-style: italic;">startup_stm32f10x_xl.s</span></span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="font-weight: bold;">startup_stm32f10x_md_vl.s</span> for RIDE7: add USART3 IRQ Handler (was missing in previous version)</span></li><li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add startup files for TrueSTUDIO toolchain</span></li></ul></ul><span style="font-size: 10pt; font-family: Verdana;"><span style="font-weight: bold; font-style: italic;"></span></span>
+<h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; margin-right: 558.05pt;"><span style="font-size: 10pt; font-family: Arial; color: white;">3.2.0
+- 03/01/2010</span></h3>
+<ol style="margin-top: 0in;" start="1" type="1">
+<li class="MsoNormal" style=""><b><i><span style="font-size: 10pt; font-family: Verdana;">General</span></i></b><i><span style="font-size: 10pt; font-family: Verdana;"></span></i><i><span style="font-size: 10pt;"><o:p></o:p></span></i></li>
+</ol>
+<ul style="margin-top: 0in;" type="disc">
+
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">STM32F10x CMSIS files updated to <span style="font-weight: bold;">CMSIS V1.30</span> release</span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Directory structure updated to be aligned with CMSIS V1.30<br>
+ </span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add support
+for <b>STM32 Low-density Value line (STM32F100x4/6) and
+Medium-density Value line (STM32F100x8/B) devices</b>. </span><span style="font-size: 10pt;"><o:p></o:p></span></li>
+
+</ul>
+<ol style="margin-top: 0in;" start="2" type="1">
+<li class="MsoNormal" style=""><b><i><span style="font-size: 10pt; font-family: Verdana;">CMSIS Core Peripheral Access Layer</span></i></b></li></ol>
+ <ul>
+ <li><b><i><span style="font-size: 10pt; font-family: Verdana;"></span></i></b><span style="font-size: 10pt; font-family: Verdana;"> Refer to <a href="../../../CMSIS_changes.htm" target="_blank">CMSIS changes</a></span></li>
+ </ul>
+ <ol style="margin-top: 0in; list-style-type: decimal;" start="3">
+ <li class="MsoNormal" style=""><b><i><span style="font-size: 10pt; font-family: Verdana;">STM32F10x CMSIS Device Peripheral Access Layer </span></i></b><b><i><span style="font-size: 10pt;"><o:p></o:p></span></i></b></li>
+
+ </ol>
+
+ <ul style="margin-top: 0in;" type="disc">
+
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Cortex-M3 Device Peripheral Access Layer Header File:</span> <span style="font-weight: bold; font-style: italic;">stm32f10x.h</span></span><br>
+ </li>
+ <ul>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Update
+the stm32f10x.h file to support new Value line devices features: CEC
+peripheral, new General purpose timers TIM15, TIM16 and TIM17.</span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Peripherals Bits definitions updated to be in line with Value line devices available features.<br>
+ </span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">HSE_Value,
+HSI_Value and HSEStartup_TimeOut changed to upper case: HSE_VALUE,
+HSI_VALUE and HSE_STARTUP_TIMEOUT. Old names are kept for legacy
+purposes.<br>
+ </span></li>
+ </ul>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Cortex-M3 Device Peripheral Access Layer System Files:</span> <span style="font-weight: bold; font-style: italic;">system_stm32f10x.h and system_stm32f10x.c</span></span><br>
+ <span style="font-size: 10pt; font-family: Verdana;"></span></li>
+ <ul>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">SystemFrequency variable name changed to SystemCoreClock</span><br>
+ <span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;"></span></span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;">Default
+ </span></span><span style="font-size: 10pt; font-family: Verdana;">SystemCoreClock</span><span style="font-size: 10pt; font-family: Verdana;"><span style="font-style: italic;"> is changed to 24MHz when Value line devices are selected and to 72MHz on other devices.</span></span><span style="font-size: 10pt;"><o:p></o:p></span><span style="font-size: 10pt; font-family: Verdana;"> <br>
+ </span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">All while(1) loop were removed from all clock setting functions. User has to handle the HSE startup failure.<br>
+ </span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Additional function <span style="font-weight: bold; font-style: italic;">void SystemCoreClockUpdate (void)</span> is provided.<br>
+ </span></li>
+ </ul>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;"><span style="text-decoration: underline;">STM32F10x CMSIS Startup files:</span> <span style="font-weight: bold; font-style: italic;">startup_stm32f10x_xx.s</span></span></li>
+ <ul>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add new
+startup files for STM32 Low-density Value line devices:
+ <span style="font-weight: bold; font-style: italic;">startup_stm32f10x_ld_vl.s</span></span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">Add new startup
+files for STM32 Medium-density Value line devices:
+ <span style="font-weight: bold; font-style: italic;">startup_stm32f10x_md_vl.s</span></span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">SystemInit() function is called from startup file (startup_stm32f10x_xx.s) before to branch to application main.<br>
+To reconfigure the default setting of SystemInit() function, refer to system_stm32f10x.c file <br>
+</span></li>
+ <li class="MsoNormal" style=""><span style="font-size: 10pt; font-family: Verdana;">GNU startup file for Low density devices (startup_stm32f10x_ld.s) is updated to fix compilation errors.<br>
+</span></li>
+ </ul>
+
+ </ul>
+
+<ul style="margin-top: 0in;" type="disc">
+</ul>
+<h2 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial;"><a name="License"></a><span style="font-size: 12pt; color: white;">License<o:p></o:p></span></h2>
+<p class="MsoNormal" style="margin: 4.5pt 0cm;"><span style="font-size: 10pt; font-family: Verdana; color: black;">The
+enclosed firmware and all the related documentation are not covered by
+a License Agreement, if you need such License you can contact your
+local STMicroelectronics office.<u1:p></u1:p><o:p></o:p></span></p>
+<p class="MsoNormal"><b style=""><span style="font-size: 10pt; font-family: Verdana; color: black;">THE
+PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO
+SAVE TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR
+ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY
+CLAIMS ARISING FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY
+CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH
+THEIR PRODUCTS. <o:p></o:p></span></b></p>
+<p class="MsoNormal"><span style="color: black;"><o:p> </o:p></span></p>
+<div class="MsoNormal" style="text-align: center;" align="center"><span style="color: black;">
+<hr align="center" size="2" width="100%"></span></div>
+<p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt; text-align: center;" align="center"><span style="font-size: 10pt; font-family: Verdana; color: black;">For
+complete documentation on </span><span style="font-size: 10pt; font-family: Verdana;">STM32(<span style="color: black;">CORTEX M3) 32-Bit Microcontrollers
+visit </span><u><span style="color: blue;"><a href="http://www.st.com/stm32" target="_blank">www.st.com/STM32</a></span></u></span><span style="color: black;"><o:p></o:p></span></p>
+</td>
+</tr>
+</tbody>
+</table>
+<p class="MsoNormal"><span style="font-size: 10pt;"><o:p></o:p></span></p>
+</td>
+</tr>
+</tbody>
+</table>
+</div>
+<p class="MsoNormal"><o:p> </o:p></p>
+</div>
+</body></html>
\ No newline at end of file diff --git a/bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/system_stm32f10x.c b/bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/system_stm32f10x.c new file mode 100644 index 0000000000..6fb4579ec8 --- /dev/null +++ b/bsp/stm32f107/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/system_stm32f10x.c @@ -0,0 +1,1094 @@ +/**
+ ******************************************************************************
+ * @file system_stm32f10x.c
+ * @author MCD Application Team
+ * @version V3.5.0
+ * @date 11-March-2011
+ * @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
+ *
+ * 1. This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
+ * factors, AHB/APBx prescalers and Flash settings).
+ * This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32f10x_xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ * 2. After each device reset the HSI (8 MHz) is used as system clock source.
+ * Then SystemInit() function is called, in "startup_stm32f10x_xx.s" file, to
+ * configure the system clock before to branch to main program.
+ *
+ * 3. If the system clock source selected by user fails to startup, the SystemInit()
+ * function will do nothing and HSI still used as system clock source. User can
+ * add some code to deal with this issue inside the SetSysClock() function.
+ *
+ * 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depedning on
+ * the product used), refer to "HSE_VALUE" define in "stm32f10x.h" file.
+ * When HSE is used as system clock source, directly or through PLL, and you
+ * are using different crystal you have to adapt the HSE value to your own
+ * configuration.
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+ * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+ * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+ * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+ * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+ * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+ *
+ * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f10x_system
+ * @{
+ */
+
+/** @addtogroup STM32F10x_System_Private_Includes
+ * @{
+ */
+
+#include "stm32f10x.h"
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Defines
+ * @{
+ */
+
+/*!< Uncomment the line corresponding to the desired System clock (SYSCLK)
+ frequency (after reset the HSI is used as SYSCLK source)
+
+ IMPORTANT NOTE:
+ ==============
+ 1. After each device reset the HSI is used as System clock source.
+
+ 2. Please make sure that the selected System clock doesn't exceed your device's
+ maximum frequency.
+
+ 3. If none of the define below is enabled, the HSI is used as System clock
+ source.
+
+ 4. The System clock configuration functions provided within this file assume that:
+ - For Low, Medium and High density Value line devices an external 8MHz
+ crystal is used to drive the System clock.
+ - For Low, Medium and High density devices an external 8MHz crystal is
+ used to drive the System clock.
+ - For Connectivity line devices an external 25MHz crystal is used to drive
+ the System clock.
+ If you are using different crystal you have to adapt those functions accordingly.
+ */
+
+#if defined (STM32F10X_LD_VL) || (defined STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+/* #define SYSCLK_FREQ_HSE HSE_VALUE */
+ #define SYSCLK_FREQ_24MHz 24000000
+#else
+/* #define SYSCLK_FREQ_HSE HSE_VALUE */
+/* #define SYSCLK_FREQ_24MHz 24000000 */
+/* #define SYSCLK_FREQ_36MHz 36000000 */
+/* #define SYSCLK_FREQ_48MHz 48000000 */
+/* #define SYSCLK_FREQ_56MHz 56000000 */
+#define SYSCLK_FREQ_72MHz 72000000
+#endif
+
+/*!< Uncomment the following line if you need to use external SRAM mounted
+ on STM3210E-EVAL board (STM32 High density and XL-density devices) or on
+ STM32100E-EVAL board (STM32 High-density value line devices) as data memory */
+#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (defined STM32F10X_HD_VL)
+/* #define DATA_IN_ExtSRAM */
+#endif
+
+/*!< Uncomment the following line if you need to relocate your vector Table in
+ Internal SRAM. */
+/* #define VECT_TAB_SRAM */
+#define VECT_TAB_OFFSET 0x0 /*!< Vector Table base offset field.
+ This value must be a multiple of 0x200. */
+
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Variables
+ * @{
+ */
+
+/*******************************************************************************
+* Clock Definitions
+*******************************************************************************/
+#ifdef SYSCLK_FREQ_HSE
+ uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_24MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_24MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_36MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_36MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_48MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_56MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz; /*!< System Clock Frequency (Core Clock) */
+#elif defined SYSCLK_FREQ_72MHz
+ uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz; /*!< System Clock Frequency (Core Clock) */
+#else /*!< HSI Selected as System Clock source */
+ uint32_t SystemCoreClock = HSI_VALUE; /*!< System Clock Frequency (Core Clock) */
+#endif
+
+__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_FunctionPrototypes
+ * @{
+ */
+
+static void SetSysClock(void);
+
+#ifdef SYSCLK_FREQ_HSE
+ static void SetSysClockToHSE(void);
+#elif defined SYSCLK_FREQ_24MHz
+ static void SetSysClockTo24(void);
+#elif defined SYSCLK_FREQ_36MHz
+ static void SetSysClockTo36(void);
+#elif defined SYSCLK_FREQ_48MHz
+ static void SetSysClockTo48(void);
+#elif defined SYSCLK_FREQ_56MHz
+ static void SetSysClockTo56(void);
+#elif defined SYSCLK_FREQ_72MHz
+ static void SetSysClockTo72(void);
+#endif
+
+#ifdef DATA_IN_ExtSRAM
+ static void SystemInit_ExtMemCtl(void);
+#endif /* DATA_IN_ExtSRAM */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F10x_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the Embedded Flash Interface, the PLL and update the
+ * SystemCoreClock variable.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+void SystemInit (void)
+{
+ /* Reset the RCC clock configuration to the default reset state(for debug purpose) */
+ /* Set HSION bit */
+ RCC->CR |= (uint32_t)0x00000001;
+
+ /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
+#ifndef STM32F10X_CL
+ RCC->CFGR &= (uint32_t)0xF8FF0000;
+#else
+ RCC->CFGR &= (uint32_t)0xF0FF0000;
+#endif /* STM32F10X_CL */
+
+ /* Reset HSEON, CSSON and PLLON bits */
+ RCC->CR &= (uint32_t)0xFEF6FFFF;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= (uint32_t)0xFFFBFFFF;
+
+ /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
+ RCC->CFGR &= (uint32_t)0xFF80FFFF;
+
+#ifdef STM32F10X_CL
+ /* Reset PLL2ON and PLL3ON bits */
+ RCC->CR &= (uint32_t)0xEBFFFFFF;
+
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x00FF0000;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000;
+#elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000;
+#else
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000;
+#endif /* STM32F10X_CL */
+
+#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (defined STM32F10X_HD_VL)
+ #ifdef DATA_IN_ExtSRAM
+ SystemInit_ExtMemCtl();
+ #endif /* DATA_IN_ExtSRAM */
+#endif
+
+ /* Configure the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers */
+ /* Configure the Flash Latency cycles and enable prefetch buffer */
+ SetSysClock();
+
+#ifdef VECT_TAB_SRAM
+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
+#else
+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */
+#endif
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock (HCLK), it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock (HCLK) changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+ *
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+ *
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+ * or HSI_VALUE(*) multiplied by the PLL factors.
+ *
+ * (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz or 25 MHz, depedning on the product used), user has to ensure
+ * that HSE_VALUE is same as the real frequency of the crystal used.
+ * Otherwise, this function may have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate (void)
+{
+ uint32_t tmp = 0, pllmull = 0, pllsource = 0;
+
+#ifdef STM32F10X_CL
+ uint32_t prediv1source = 0, prediv1factor = 0, prediv2factor = 0, pll2mull = 0;
+#endif /* STM32F10X_CL */
+
+#if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+ uint32_t prediv1factor = 0;
+#endif /* STM32F10X_LD_VL or STM32F10X_MD_VL or STM32F10X_HD_VL */
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+ switch (tmp)
+ {
+ case 0x00: /* HSI used as system clock */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ case 0x04: /* HSE used as system clock */
+ SystemCoreClock = HSE_VALUE;
+ break;
+ case 0x08: /* PLL used as system clock */
+
+ /* Get PLL clock source and multiplication factor ----------------------*/
+ pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
+ pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
+
+#ifndef STM32F10X_CL
+ pllmull = ( pllmull >> 18) + 2;
+
+ if (pllsource == 0x00)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
+ }
+ else
+ {
+ #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ #else
+ /* HSE selected as PLL clock entry */
+ if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
+ {/* HSE oscillator clock divided by 2 */
+ SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
+ }
+ else
+ {
+ SystemCoreClock = HSE_VALUE * pllmull;
+ }
+ #endif
+ }
+#else
+ pllmull = pllmull >> 18;
+
+ if (pllmull != 0x0D)
+ {
+ pllmull += 2;
+ }
+ else
+ { /* PLL multiplication factor = PLL input clock * 6.5 */
+ pllmull = 13 / 2;
+ }
+
+ if (pllsource == 0x00)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
+ }
+ else
+ {/* PREDIV1 selected as PLL clock entry */
+
+ /* Get PREDIV1 clock source and division factor */
+ prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1;
+
+ if (prediv1source == 0)
+ {
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ }
+ else
+ {/* PLL2 clock selected as PREDIV1 clock entry */
+
+ /* Get PREDIV2 division factor and PLL2 multiplication factor */
+ prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4) + 1;
+ pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8 ) + 2;
+ SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
+ }
+ }
+#endif /* STM32F10X_CL */
+ break;
+
+ default:
+ SystemCoreClock = HSI_VALUE;
+ break;
+ }
+
+ /* Compute HCLK clock frequency ----------------*/
+ /* Get HCLK prescaler */
+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
+ /* HCLK clock frequency */
+ SystemCoreClock >>= tmp;
+}
+
+/**
+ * @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
+ * @param None
+ * @retval None
+ */
+static void SetSysClock(void)
+{
+#ifdef SYSCLK_FREQ_HSE
+ SetSysClockToHSE();
+#elif defined SYSCLK_FREQ_24MHz
+ SetSysClockTo24();
+#elif defined SYSCLK_FREQ_36MHz
+ SetSysClockTo36();
+#elif defined SYSCLK_FREQ_48MHz
+ SetSysClockTo48();
+#elif defined SYSCLK_FREQ_56MHz
+ SetSysClockTo56();
+#elif defined SYSCLK_FREQ_72MHz
+ SetSysClockTo72();
+#endif
+
+ /* If none of the define above is enabled, the HSI is used as System clock
+ source (default after reset) */
+}
+
+/**
+ * @brief Setup the external memory controller. Called in startup_stm32f10x.s
+ * before jump to __main
+ * @param None
+ * @retval None
+ */
+#ifdef DATA_IN_ExtSRAM
+/**
+ * @brief Setup the external memory controller.
+ * Called in startup_stm32f10x_xx.s/.c before jump to main.
+ * This function configures the external SRAM mounted on STM3210E-EVAL
+ * board (STM32 High density devices). This SRAM will be used as program
+ * data memory (including heap and stack).
+ * @param None
+ * @retval None
+ */
+void SystemInit_ExtMemCtl(void)
+{
+/*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
+ required, then adjust the Register Addresses */
+
+ /* Enable FSMC clock */
+ RCC->AHBENR = 0x00000114;
+
+ /* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
+ RCC->APB2ENR = 0x000001E0;
+
+/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
+/*---------------- SRAM Address lines configuration -------------------------*/
+/*---------------- NOE and NWE configuration --------------------------------*/
+/*---------------- NE3 configuration ----------------------------------------*/
+/*---------------- NBL0, NBL1 configuration ---------------------------------*/
+
+ GPIOD->CRL = 0x44BB44BB;
+ GPIOD->CRH = 0xBBBBBBBB;
+
+ GPIOE->CRL = 0xB44444BB;
+ GPIOE->CRH = 0xBBBBBBBB;
+
+ GPIOF->CRL = 0x44BBBBBB;
+ GPIOF->CRH = 0xBBBB4444;
+
+ GPIOG->CRL = 0x44BBBBBB;
+ GPIOG->CRH = 0x44444B44;
+
+/*---------------- FSMC Configuration ---------------------------------------*/
+/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
+
+ FSMC_Bank1->BTCR[4] = 0x00001011;
+ FSMC_Bank1->BTCR[5] = 0x00000200;
+}
+#endif /* DATA_IN_ExtSRAM */
+
+#ifdef SYSCLK_FREQ_HSE
+/**
+ * @brief Selects HSE as System clock source and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockToHSE(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+
+#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL && !defined STM32F10X_HD_VL
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 0 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+
+#ifndef STM32F10X_CL
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_0;
+#else
+ if (HSE_VALUE <= 24000000)
+ {
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_0;
+ }
+ else
+ {
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_1;
+ }
+#endif /* STM32F10X_CL */
+#endif
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV1;
+
+ /* Select HSE as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_HSE;
+
+ /* Wait till HSE is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x04)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#elif defined SYSCLK_FREQ_24MHz
+/**
+ * @brief Sets System clock frequency to 24MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo24(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL && !defined STM32F10X_HD_VL
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 0 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_0;
+#endif
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV1;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL configuration: PLLCLK = PREDIV1 * 6 = 24 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL6);
+
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 10 = 4 MHz */
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV10);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+#elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
+ /* PLL configuration: = (HSE / 2) * 6 = 24 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_PREDIV1 | RCC_CFGR_PLLXTPRE_PREDIV1_Div2 | RCC_CFGR_PLLMULL6);
+#else
+ /* PLL configuration: = (HSE / 2) * 6 = 24 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLXTPRE_HSE_Div2 | RCC_CFGR_PLLMULL6);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#elif defined SYSCLK_FREQ_36MHz
+/**
+ * @brief Sets System clock frequency to 36MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo36(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 1 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_1;
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV1;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 9 = 36 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL9);
+
+ /*!< PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 10 = 4 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV10);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+#else
+ /* PLL configuration: PLLCLK = (HSE / 2) * 9 = 36 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLXTPRE_HSE_Div2 | RCC_CFGR_PLLMULL9);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#elif defined SYSCLK_FREQ_48MHz
+/**
+ * @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo48(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 1 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_1;
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 5 = 8 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV5);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 6 = 48 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL6);
+#else
+ /* PLL configuration: PLLCLK = HSE * 6 = 48 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLMULL6);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+
+#elif defined SYSCLK_FREQ_56MHz
+/**
+ * @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo56(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 2 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_2;
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 5 = 8 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV5);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 7 = 56 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL7);
+#else
+ /* PLL configuration: PLLCLK = HSE * 7 = 56 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLMULL7);
+
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+
+#elif defined SYSCLK_FREQ_72MHz
+/**
+ * @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2
+ * and PCLK1 prescalers.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+static void SetSysClockTo72(void)
+{
+ __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
+
+ /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
+ /* Enable HSE */
+ RCC->CR |= ((uint32_t)RCC_CR_HSEON);
+
+ /* Wait till HSE is ready and if Time out is reached exit */
+ do
+ {
+ HSEStatus = RCC->CR & RCC_CR_HSERDY;
+ StartUpCounter++;
+ } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
+
+ if ((RCC->CR & RCC_CR_HSERDY) != RESET)
+ {
+ HSEStatus = (uint32_t)0x01;
+ }
+ else
+ {
+ HSEStatus = (uint32_t)0x00;
+ }
+
+ if (HSEStatus == (uint32_t)0x01)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH->ACR |= FLASH_ACR_PRFTBE;
+
+ /* Flash 2 wait state */
+ FLASH->ACR &= (uint32_t)((uint32_t)~FLASH_ACR_LATENCY);
+ FLASH->ACR |= (uint32_t)FLASH_ACR_LATENCY_2;
+
+
+ /* HCLK = SYSCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_HPRE_DIV1;
+
+ /* PCLK2 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE2_DIV1;
+
+ /* PCLK1 = HCLK */
+ RCC->CFGR |= (uint32_t)RCC_CFGR_PPRE1_DIV2;
+
+#ifdef STM32F10X_CL
+ /* Configure PLLs ------------------------------------------------------*/
+ /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+ /* PREDIV1 configuration: PREDIV1CLK = PLL2 / 5 = 8 MHz */
+
+ RCC->CFGR2 &= (uint32_t)~(RCC_CFGR2_PREDIV2 | RCC_CFGR2_PLL2MUL |
+ RCC_CFGR2_PREDIV1 | RCC_CFGR2_PREDIV1SRC);
+ RCC->CFGR2 |= (uint32_t)(RCC_CFGR2_PREDIV2_DIV5 | RCC_CFGR2_PLL2MUL8 |
+ RCC_CFGR2_PREDIV1SRC_PLL2 | RCC_CFGR2_PREDIV1_DIV5);
+
+ /* Enable PLL2 */
+ RCC->CR |= RCC_CR_PLL2ON;
+ /* Wait till PLL2 is ready */
+ while((RCC->CR & RCC_CR_PLL2RDY) == 0)
+ {
+ }
+
+
+ /* PLL configuration: PLLCLK = PREDIV1 * 9 = 72 MHz */
+ RCC->CFGR &= (uint32_t)~(RCC_CFGR_PLLXTPRE | RCC_CFGR_PLLSRC | RCC_CFGR_PLLMULL);
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLXTPRE_PREDIV1 | RCC_CFGR_PLLSRC_PREDIV1 |
+ RCC_CFGR_PLLMULL9);
+#else
+ /* PLL configuration: PLLCLK = HSE * 9 = 72 MHz */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE |
+ RCC_CFGR_PLLMULL));
+ RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSE | RCC_CFGR_PLLMULL9);
+#endif /* STM32F10X_CL */
+
+ /* Enable PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait till PLL is ready */
+ while((RCC->CR & RCC_CR_PLLRDY) == 0)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= (uint32_t)((uint32_t)~(RCC_CFGR_SW));
+ RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
+
+ /* Wait till PLL is used as system clock source */
+ while ((RCC->CFGR & (uint32_t)RCC_CFGR_SWS) != (uint32_t)0x08)
+ {
+ }
+ }
+ else
+ { /* If HSE fails to start-up, the application will have wrong clock
+ configuration. User can add here some code to deal with this error */
+ }
+}
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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