89 lines
3.9 KiB
Plaintext
89 lines
3.9 KiB
Plaintext
/**
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@page FLASH_FastProgram FLASH Erase and Fast Program example
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@verbatim
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******************************************************************************
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* @file FLASH/FLASH_FastProgram/readme.txt
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* @author MCD Application Team
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* @brief Description of the FLASH Erase and Fast Program 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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How to configure and use the FLASH HAL API to erase and fast program the
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internal Flash memory.
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At the beginning of the main program the HAL_Init() function is called to reset
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all the peripherals, initialize the Flash interface and the systick.
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Then the SystemClock_Config() function is used to configure the system clock (SYSCLK)
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to run at 48 MHz.
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After Reset, the Flash memory Program/Erase Controller is locked. A dedicated function
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is used to enable the FLASH control register access.
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Before programming the desired addresses, an erase operation is performed using
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the flash erase page feature. The erase procedure is done by filling the erase init
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structure giving the bank which will be mass erased.
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Once this operation is finished, page fast programming operation will be performed
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in the Flash memory. The written data is then read back and checked.
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The NUCLEO-WL55JC RevC board LEDs can be used to monitor the transfer status:
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- LED2 is ON when there are no errors detected after data programming
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- LED1 is ON when there are errors detected after data programming
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- LED3 is ON when there is an issue during erase or program procedure
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@note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds)
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based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from
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a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower)
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than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
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To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
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@note The application need to ensure that the SysTick time base is always set to 1 millisecond
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to have correct HAL operation.
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@note All the executable code is mapped in SRAM1 area.
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@par Keywords
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Memory, FLASH, Fast Program, Sector, Mass Erase
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@par Directory contents
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- FLASH/FLASH_FastProgram/Inc/stm32wlxx_nucleo_conf.h BSP configuration file
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- FLASH/FLASH_FastProgram/Inc/stm32wlxx_hal_conf.h HAL Configuration file
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- FLASH/FLASH_FastProgram/Inc/stm32wlxx_it.h Header for stm32wlxx_it.c
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- FLASH/FLASH_FastProgram/Inc/main.h Header for main.c module
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- FLASH/FLASH_FastProgram/Src/stm32wlxx_it.c Interrupt handlers
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- FLASH/FLASH_FastProgram/Src/main.c Main program
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- FLASH/FLASH_FastProgram/Src/stm32wlxx_hal_msp.c MSP initialization and de-initialization
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- FLASH/FLASH_FastProgram/Src/system_stm32wlxx.c STM32WLxx system clock configuration 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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@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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