mirror of
https://github.com/Klipper3d/klipper.git
synced 2025-07-16 03:07:56 -06:00
stm32f7: add support for stm32f7 and remram board
Signed-off-by: Frederic Morin <frederic.morin.8@gmail.com>
This commit is contained in:
parent
a3eebab4f2
commit
33b18fd62b
31 changed files with 247955 additions and 11 deletions
15192
lib/stm32f7/include/stm32f722xx.h
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lib/stm32f7/include/stm32f722xx.h
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lib/stm32f7/include/stm32f723xx.h
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lib/stm32f7/include/stm32f723xx.h
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lib/stm32f7/include/stm32f730xx.h
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lib/stm32f7/include/stm32f730xx.h
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lib/stm32f7/include/stm32f732xx.h
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lib/stm32f7/include/stm32f732xx.h
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lib/stm32f7/include/stm32f733xx.h
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lib/stm32f7/include/stm32f733xx.h
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lib/stm32f7/include/stm32f745xx.h
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lib/stm32f7/include/stm32f745xx.h
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lib/stm32f7/include/stm32f746xx.h
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lib/stm32f7/include/stm32f746xx.h
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lib/stm32f7/include/stm32f750xx.h
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lib/stm32f7/include/stm32f750xx.h
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lib/stm32f7/include/stm32f756xx.h
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lib/stm32f7/include/stm32f756xx.h
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lib/stm32f7/include/stm32f765xx.h
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lib/stm32f7/include/stm32f765xx.h
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lib/stm32f7/include/stm32f767xx.h
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lib/stm32f7/include/stm32f767xx.h
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lib/stm32f7/include/stm32f769xx.h
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lib/stm32f7/include/stm32f769xx.h
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lib/stm32f7/include/stm32f777xx.h
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lib/stm32f7/include/stm32f777xx.h
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lib/stm32f7/include/stm32f779xx.h
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lib/stm32f7/include/stm32f779xx.h
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lib/stm32f7/include/stm32f7xx.h
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lib/stm32f7/include/stm32f7xx.h
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/**
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******************************************************************************
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* @file stm32f7xx.h
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* @author MCD Application Team
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* @brief CMSIS STM32F7xx Device Peripheral Access Layer Header File.
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*
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* The file is the unique include file that the application programmer
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* is using in the C source code, usually in main.c. This file contains:
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* - Configuration section that allows to select:
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* - The STM32F7xx device used in the target application
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* - To use or not the peripheral’s drivers in application code(i.e.
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* code will be based on direct access to peripheral’s registers
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* rather than drivers API), this option is controlled by
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* "#define USE_HAL_DRIVER"
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*
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/** @addtogroup CMSIS
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* @{
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*/
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/** @addtogroup stm32f7xx
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* @{
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*/
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#ifndef __STM32F7xx_H
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#define __STM32F7xx_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/** @addtogroup Library_configuration_section
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* @{
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*/
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/**
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* @brief STM32 Family
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*/
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#if !defined (STM32F7)
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#define STM32F7
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#endif /* STM32F7 */
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/* Uncomment the line below according to the target STM32 device used in your
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application
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*/
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#if !defined (STM32F756xx) && !defined (STM32F746xx) && !defined (STM32F745xx) && !defined (STM32F767xx) && \
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!defined (STM32F769xx) && !defined (STM32F777xx) && !defined (STM32F779xx) && !defined (STM32F722xx) && \
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!defined (STM32F723xx) && !defined (STM32F732xx) && !defined (STM32F733xx) && !defined (STM32F730xx) && \
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!defined (STM32F750xx)
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/* #define STM32F756xx */ /*!< STM32F756VG, STM32F756ZG, STM32F756ZG, STM32F756IG, STM32F756BG,
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STM32F756NG Devices */
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/* #define STM32F746xx */ /*!< STM32F746VE, STM32F746VG, STM32F746ZE, STM32F746ZG, STM32F746IE, STM32F746IG,
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STM32F746BE, STM32F746BG, STM32F746NE, STM32F746NG Devices */
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/* #define STM32F745xx */ /*!< STM32F745VE, STM32F745VG, STM32F745ZG, STM32F745ZE, STM32F745IE, STM32F745IG Devices */
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/* #define STM32F765xx */ /*!< STM32F765BI, STM32F765BG, STM32F765NI, STM32F765NG, STM32F765II, STM32F765IG,
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STM32F765ZI, STM32F765ZG, STM32F765VI, STM32F765VG Devices */
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/* #define STM32F767xx */ /*!< STM32F767BG, STM32F767BI, STM32F767IG, STM32F767II, STM32F767NG, STM32F767NI,
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STM32F767VG, STM32F767VI, STM32F767ZG, STM32F767ZI Devices */
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/* #define STM32F769xx */ /*!< STM32F769AG, STM32F769AI, STM32F769BG, STM32F769BI, STM32F769IG, STM32F769II,
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STM32F769NG, STM32F769NI, STM32F768AI Devices */
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/* #define STM32F777xx */ /*!< STM32F777VI, STM32F777ZI, STM32F777II, STM32F777BI, STM32F777NI Devices */
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/* #define STM32F779xx */ /*!< STM32F779II, STM32F779BI, STM32F779NI, STM32F779AI, STM32F778AI Devices */
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/* #define STM32F722xx */ /*!< STM32F722IE, STM32F722ZE, STM32F722VE, STM32F722RE, STM32F722IC, STM32F722ZC,
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STM32F722VC, STM32F722RC Devices */
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/* #define STM32F723xx */ /*!< STM32F723IE, STM32F723ZE, STM32F723VE, STM32F723IC, STM32F723ZC, STM32F723VC Devices */
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/* #define STM32F732xx */ /*!< STM32F732IE, STM32F732ZE, STM32F732VE, STM32F732RE Devices */
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/* #define STM32F733xx */ /*!< STM32F733IE, STM32F733ZE, STM32F733VE Devices */
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/* #define STM32F730xx */ /*!< STM32F730R, STM32F730V, STM32F730Z, STM32F730I Devices */
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/* #define STM32F750xx */ /*!< STM32F750V, STM32F750Z, STM32F750N Devices */
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#endif
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/* Tip: To avoid modifying this file each time you need to switch between these
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devices, you can define the device in your toolchain compiler preprocessor.
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*/
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#if !defined (USE_HAL_DRIVER)
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/**
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* @brief Comment the line below if you will not use the peripherals drivers.
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In this case, these drivers will not be included and the application code will
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be based on direct access to peripherals registers
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*/
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/*#define USE_HAL_DRIVER */
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#endif /* USE_HAL_DRIVER */
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/**
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* @brief CMSIS Device version number V1.2.4
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*/
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#define __STM32F7_CMSIS_VERSION_MAIN (0x01) /*!< [31:24] main version */
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#define __STM32F7_CMSIS_VERSION_SUB1 (0x02) /*!< [23:16] sub1 version */
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#define __STM32F7_CMSIS_VERSION_SUB2 (0x04) /*!< [15:8] sub2 version */
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#define __STM32F7_CMSIS_VERSION_RC (0x00) /*!< [7:0] release candidate */
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#define __STM32F7_CMSIS_VERSION ((__STM32F7_CMSIS_VERSION_MAIN << 24)\
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|(__STM32F7_CMSIS_VERSION_SUB1 << 16)\
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|(__STM32F7_CMSIS_VERSION_SUB2 << 8 )\
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|(__STM32F7_CMSIS_VERSION_RC))
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/**
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* @}
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*/
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/** @addtogroup Device_Included
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* @{
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*/
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#if defined(STM32F722xx)
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#include "stm32f722xx.h"
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#elif defined(STM32F723xx)
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#include "stm32f723xx.h"
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#elif defined(STM32F732xx)
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#include "stm32f732xx.h"
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#elif defined(STM32F733xx)
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#include "stm32f733xx.h"
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#elif defined(STM32F756xx)
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#include "stm32f756xx.h"
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#elif defined(STM32F746xx)
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#include "stm32f746xx.h"
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#elif defined(STM32F745xx)
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#include "stm32f745xx.h"
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#elif defined(STM32F765xx)
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#include "stm32f765xx.h"
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#elif defined(STM32F767xx)
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#include "stm32f767xx.h"
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#elif defined(STM32F769xx)
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#include "stm32f769xx.h"
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#elif defined(STM32F777xx)
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#include "stm32f777xx.h"
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#elif defined(STM32F779xx)
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#include "stm32f779xx.h"
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#elif defined(STM32F730xx)
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#include "stm32f730xx.h"
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#elif defined(STM32F750xx)
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#include "stm32f750xx.h"
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#else
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#error "Please select first the target STM32F7xx device used in your application (in stm32f7xx.h file)"
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#endif
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/**
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* @}
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*/
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/** @addtogroup Exported_types
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* @{
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*/
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typedef enum
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{
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RESET = 0U,
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SET = !RESET
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} FlagStatus, ITStatus;
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typedef enum
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{
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DISABLE = 0U,
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ENABLE = !DISABLE
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} FunctionalState;
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#define IS_FUNCTIONAL_STATE(STATE) (((STATE) == DISABLE) || ((STATE) == ENABLE))
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typedef enum
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{
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SUCCESS = 0U,
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ERROR = !SUCCESS
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} ErrorStatus;
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/**
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* @}
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*/
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/** @addtogroup Exported_macro
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* @{
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*/
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#define SET_BIT(REG, BIT) ((REG) |= (BIT))
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#define CLEAR_BIT(REG, BIT) ((REG) &= ~(BIT))
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#define READ_BIT(REG, BIT) ((REG) & (BIT))
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#define CLEAR_REG(REG) ((REG) = (0x0))
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#define WRITE_REG(REG, VAL) ((REG) = (VAL))
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#define READ_REG(REG) ((REG))
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#define MODIFY_REG(REG, CLEARMASK, SETMASK) WRITE_REG((REG), (((READ_REG(REG)) & (~(CLEARMASK))) | (SETMASK)))
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#define POSITION_VAL(VAL) (__CLZ(__RBIT(VAL)))
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/**
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* @}
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*/
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#ifdef USE_HAL_DRIVER
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#include "stm32f7xx_hal.h"
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#endif /* USE_HAL_DRIVER */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __STM32F7xx_H */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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123
lib/stm32f7/include/system_stm32f7xx.h
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123
lib/stm32f7/include/system_stm32f7xx.h
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/**
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******************************************************************************
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* @file system_stm32f7xx.h
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* @author MCD Application Team
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* @brief CMSIS Cortex-M7 Device System Source File for STM32F7xx devices.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
|
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* are permitted provided that the following conditions are met:
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||||
* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/** @addtogroup CMSIS
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* @{
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*/
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/** @addtogroup stm32f7xx_system
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* @{
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*/
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/**
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* @brief Define to prevent recursive inclusion
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*/
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#ifndef __SYSTEM_STM32F7XX_H
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#define __SYSTEM_STM32F7XX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @addtogroup STM32F7xx_System_Includes
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* @{
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*/
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/**
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* @}
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*/
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/** @addtogroup STM32F7xx_System_Exported_Variables
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* @{
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*/
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/* The SystemCoreClock variable is updated in three ways:
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1) by calling CMSIS function SystemCoreClockUpdate()
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2) by calling HAL API function HAL_RCC_GetSysClockFreq()
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3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
|
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Note: If you use this function to configure the system clock; then there
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is no need to call the 2 first functions listed above, since SystemCoreClock
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variable is updated automatically.
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*/
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extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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extern const uint8_t AHBPrescTable[16]; /*!< AHB prescalers table values */
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extern const uint8_t APBPrescTable[8]; /*!< APB prescalers table values */
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/**
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* @}
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*/
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/** @addtogroup STM32F7xx_System_Exported_Constants
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* @{
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*/
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/**
|
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* @}
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*/
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|
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/** @addtogroup STM32F7xx_System_Exported_Macros
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* @{
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*/
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|
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/**
|
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* @}
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*/
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/** @addtogroup STM32F7xx_System_Exported_Functions
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* @{
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*/
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extern void SystemInit(void);
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extern void SystemCoreClockUpdate(void);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /*__SYSTEM_STM32F7XX_H */
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/**
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* @}
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*/
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|
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/**
|
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* @}
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*/
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||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
278
lib/stm32f7/system_stm32f7xx.c
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278
lib/stm32f7/system_stm32f7xx.c
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/**
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******************************************************************************
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* @file system_stm32f7xx.c
|
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* @author MCD Application Team
|
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* @brief CMSIS Cortex-M7 Device Peripheral Access Layer System Source File.
|
||||
*
|
||||
* This file provides two functions and one global variable to be called from
|
||||
* user application:
|
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* - SystemInit(): This function is called at startup just after reset and
|
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* before branch to main program. This call is made inside
|
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* the "startup_stm32f7xx.s" file.
|
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*
|
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* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
|
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* by the user application to setup the SysTick
|
||||
* timer or configure other parameters.
|
||||
*
|
||||
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
|
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* be called whenever the core clock is changed
|
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* during program execution.
|
||||
*
|
||||
*
|
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******************************************************************************
|
||||
* @attention
|
||||
*
|
||||
* <h2><center>© COPYRIGHT 2016 STMicroelectronics</center></h2>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without modification,
|
||||
* are permitted provided that the following conditions are met:
|
||||
* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
******************************************************************************
|
||||
*/
|
||||
|
||||
/** @addtogroup CMSIS
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup stm32f7xx_system
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_Includes
|
||||
* @{
|
||||
*/
|
||||
|
||||
#include "stm32f7xx.h"
|
||||
|
||||
#if !defined (HSE_VALUE)
|
||||
#define HSE_VALUE ((uint32_t)25000000) /*!< Default value of the External oscillator in Hz */
|
||||
#endif /* HSE_VALUE */
|
||||
|
||||
#if !defined (HSI_VALUE)
|
||||
#define HSI_VALUE ((uint32_t)16000000) /*!< Value of the Internal oscillator in Hz*/
|
||||
#endif /* HSI_VALUE */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_TypesDefinitions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_Defines
|
||||
* @{
|
||||
*/
|
||||
|
||||
/************************* Miscellaneous Configuration ************************/
|
||||
|
||||
/*!< Uncomment the following line if you need to relocate your vector Table in
|
||||
Internal SRAM. */
|
||||
/* #define VECT_TAB_SRAM */
|
||||
#define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field.
|
||||
This value must be a multiple of 0x200. */
|
||||
/******************************************************************************/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_Macros
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_Variables
|
||||
* @{
|
||||
*/
|
||||
|
||||
/* This variable is updated in three ways:
|
||||
1) by calling CMSIS function SystemCoreClockUpdate()
|
||||
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
|
||||
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
|
||||
Note: If you use this function to configure the system clock; then there
|
||||
is no need to call the 2 first functions listed above, since SystemCoreClock
|
||||
variable is updated automatically.
|
||||
*/
|
||||
uint32_t SystemCoreClock = 16000000;
|
||||
const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
|
||||
const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_FunctionPrototypes
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup STM32F7xx_System_Private_Functions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Setup the microcontroller system
|
||||
* Initialize the Embedded Flash Interface, the PLL and update the
|
||||
* SystemFrequency variable.
|
||||
* @param None
|
||||
* @retval None
|
||||
*/
|
||||
void SystemInit(void)
|
||||
{
|
||||
/* FPU settings ------------------------------------------------------------*/
|
||||
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
|
||||
SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
|
||||
#endif
|
||||
/* Reset the RCC clock configuration to the default reset state ------------*/
|
||||
/* Set HSION bit */
|
||||
RCC->CR |= (uint32_t)0x00000001;
|
||||
|
||||
/* Reset CFGR register */
|
||||
RCC->CFGR = 0x00000000;
|
||||
|
||||
/* Reset HSEON, CSSON and PLLON bits */
|
||||
RCC->CR &= (uint32_t)0xFEF6FFFF;
|
||||
|
||||
/* Reset PLLCFGR register */
|
||||
RCC->PLLCFGR = 0x24003010;
|
||||
|
||||
/* Reset HSEBYP bit */
|
||||
RCC->CR &= (uint32_t)0xFFFBFFFF;
|
||||
|
||||
/* Disable all interrupts */
|
||||
RCC->CIR = 0x00000000;
|
||||
|
||||
/* Configure the Vector Table location add offset address ------------------*/
|
||||
#ifdef VECT_TAB_SRAM
|
||||
SCB->VTOR = RAMDTCM_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/divided by the PLL factors.
|
||||
*
|
||||
* (*) HSI_VALUE is a constant defined in stm32f7xx_hal_conf.h file (default value
|
||||
* 16 MHz) but the real value may vary depending on the variations
|
||||
* in voltage and temperature.
|
||||
*
|
||||
* (**) HSE_VALUE is a constant defined in stm32f7xx_hal_conf.h file (default value
|
||||
* 25 MHz), 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, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
|
||||
|
||||
/* Get SYSCLK source -------------------------------------------------------*/
|
||||
tmp = RCC->CFGR & RCC_CFGR_SWS;
|
||||
|
||||
switch (tmp)
|
||||
{
|
||||
case 0x00: /* HSI used as system clock source */
|
||||
SystemCoreClock = HSI_VALUE;
|
||||
break;
|
||||
case 0x04: /* HSE used as system clock source */
|
||||
SystemCoreClock = HSE_VALUE;
|
||||
break;
|
||||
case 0x08: /* PLL used as system clock source */
|
||||
|
||||
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
|
||||
SYSCLK = PLL_VCO / PLL_P
|
||||
*/
|
||||
pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
|
||||
pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
|
||||
|
||||
if (pllsource != 0)
|
||||
{
|
||||
/* HSE used as PLL clock source */
|
||||
pllvco = (HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* HSI used as PLL clock source */
|
||||
pllvco = (HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
|
||||
}
|
||||
|
||||
pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2;
|
||||
SystemCoreClock = pllvco/pllp;
|
||||
break;
|
||||
default:
|
||||
SystemCoreClock = HSI_VALUE;
|
||||
break;
|
||||
}
|
||||
/* Compute HCLK frequency --------------------------------------------------*/
|
||||
/* Get HCLK prescaler */
|
||||
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
|
||||
/* HCLK frequency */
|
||||
SystemCoreClock >>= tmp;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
Loading…
Add table
Add a link
Reference in a new issue