72 lines
2.9 KiB
Plaintext
72 lines
2.9 KiB
Plaintext
/**
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@page UTILS_ConfigureSystemClock UTILS example
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@verbatim
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******************************************************************************
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* @file Examples_LL/UTILS/UTILS_ConfigureSystemClock/readme.txt
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* @author MCD Application Team
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* @brief Description of the UTILS example.
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******************************************************************************
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*
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* Copyright (c) 2020 STMicroelectronics. All rights reserved.
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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@endverbatim
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@par Example Description
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Use of UTILS LL API to configure the system clock using PLL with HSI as source clock.
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The user application just needs to calculate the PLL parameters using STM32CubeMX and call the UTILS LL API.
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System starts with clock used after reset.
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Then, a system clock switch is done to PLL with HSI as PLL clock source. Automatically, FLASH latency
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is tuned according to system constraints described in the reference manual.
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User can easily set its own PLL parameters in changing global variable used to store them.
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A LED2 toggle of 1sec provides this information that system is well configured to requested frequency.
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Anyway, user can connect on oscilloscope to MCO pin (PA.08) to check requested frequency:
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- SYSCLK frequency with frequency value around @24MHz.
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@par Keywords
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Utils, system, Clock, HSI, PLL, flash latency, SYSCLK, frequency Oscilloscope
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@par Directory contents
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- UTILS/UTILS_ConfigureSystemClock/Inc/stm32wlxx_it.h Interrupt handlers header file
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- UTILS/UTILS_ConfigureSystemClock/Inc/main.h Header for main.c module
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- UTILS/UTILS_ConfigureSystemClock/Inc/stm32_assert.h Template file to include assert_failed function
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- UTILS/UTILS_ConfigureSystemClock/Src/stm32wlxx_it.c Interrupt handlers
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- UTILS/UTILS_ConfigureSystemClock/Src/main.c Main program
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- UTILS/UTILS_ConfigureSystemClock/Src/system_stm32wlxx.c STM32WLxx system source file
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@par Hardware and Software environment
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- This example runs on STM32WL55JCIx devices.
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- This example has been tested with NUCLEO-WL55JC RevC board and can be
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easily tailored to any other supported device and development board.
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- NUCLEO-WL55JC RevC Set-up
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- Connect the MCO pin to an oscilloscope to monitor the different waveforms:
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- PA.08: pin 16 in CN10 connector
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@par How to use it ?
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In order to make the program work, you must do the following :
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- Open your preferred toolchain
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- Rebuild all files and load your image into target memory
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- Run the example
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* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
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*/
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