flash.c File Reference

This file contains the MCU internal flash driver implementation for read, write, erase, and write protection operations. More...

#include "flash.h"
#include "mcu_hal.h"
#include "rcc.h"
#include <string.h>

Go to the source code of this file.

Macros
#define	FLASH_SIZE_WRAPPER   (uint32_t)(FLASH_SIZE)
#define	FLASH_BANK_SIZE_WRAPPER   (uint32_t)(FLASH_BANK_SIZE)
#define	FLASH_PAGE_NB_PER_BANK    (uint32_t)(FLASH_BANK_SIZE_WRAPPER / FLASH_PAGE_SIZE)

Functions
static bool	FlashPerformErase (const uint32_t address, const uint32_t length)
	Private helper function to perform the actual erase of the required flash pages. More...
static uint32_t	FlashPerformWrite (const uint8_t *const data, const uint32_t address, const uint32_t length)
	Private helper function to perform the actual writing of the provided data into the flash. More...
static uint32_t	FlashGetBank (const uint32_t address)
	Get the bank where the provided address is located. More...
static uint32_t	FlashGetPage (const uint32_t address)
	Get the page number where the provided address is located. More...
static bool	FlashCheckIfPageRangesOverlap (const uint32_t range1Start, const uint32_t range1End, const uint32_t range2Start, const uint32_t range2End)
	Check if two flash page ranges overlap. More...
void	FlashClearErrorFlags (void)
	Clear all flash error flags.
bool	FlashCheckIfDataFits (const uint32_t address, const uint32_t length)
	Check if an array of data fits into the flash. More...
bool	FlashCheckIfWriteProtectionEnabled (const uint32_t address, const uint32_t length)
	Check if flash write protection is enabled for the specified region. More...
bool	FlashDisableWriteProtection (void)
	Disable flash write protection for the application area. More...
bool	FlashEnableWriteProtection (const uint32_t address, const uint32_t length)
	Enable flash write protection for the specified region. More...
bool	FlashCompare (const uint8_t *const data, const uint32_t address, const uint32_t length)
	Compare buffer content with microcontroller flash content. More...
uint32_t	FlashRead (uint8_t *const data, const uint32_t address, const uint32_t length)
	Read data from the microcontroller flash. More...
uint32_t	FlashWrite (const uint8_t *const data, const uint32_t address, const uint32_t length)
	Write data into the microcontroller flash. More...
void	FlashRemapMemoryToSystemFlash (void)
	Remap the microcontroller flash memory to the built-in system flash memory. More...

Detailed Description

This file contains the MCU internal flash driver implementation for read, write, erase, and write protection operations.

STM32 Bootloader

Author

Akos Pasztor

Copyright

(c) 2026 Akos Pasztor. https://akospasztor.com This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component.

Definition in file flash.c.