FLASH driver modules. More...

Collaboration diagram for FLASH:

Modules
	FLASH_Exported_Constants

	FLASH_Private_Functions

Macros
#define	SECTOR_MASK ((uint32_t)0xFFFFFF07)

Enumerations
enum	FLASH_Status { FLASH_BUSY = 1, FLASH_ERROR_RD, FLASH_ERROR_PGS, FLASH_ERROR_PGP, FLASH_ERROR_PGA, FLASH_ERROR_WRP, FLASH_ERROR_PROGRAM, FLASH_ERROR_OPERATION, FLASH_COMPLETE }
	FLASH Status.

Functions
void	FLASH_SetLatency (uint32_t FLASH_Latency)
	Sets the code latency value. More...

void	FLASH_PrefetchBufferCmd (FunctionalState NewState)
	Enables or disables the Prefetch Buffer. More...

void	FLASH_InstructionCacheCmd (FunctionalState NewState)
	Enables or disables the Instruction Cache feature. More...

void	FLASH_DataCacheCmd (FunctionalState NewState)
	Enables or disables the Data Cache feature. More...

void	FLASH_InstructionCacheReset (void)
	Resets the Instruction Cache. More...

void	FLASH_DataCacheReset (void)
	Resets the Data Cache. More...

void	FLASH_Unlock (void)
	Unlocks the FLASH control register access. More...

void	FLASH_Lock (void)
	Locks the FLASH control register access. More...

FLASH_Status	FLASH_EraseSector (uint32_t FLASH_Sector, uint8_t VoltageRange)
	Erases a specified FLASH Sector. More...

FLASH_Status	FLASH_EraseAllSectors (uint8_t VoltageRange)
	Erases all FLASH Sectors. More...

FLASH_Status	FLASH_EraseAllBank1Sectors (uint8_t VoltageRange)
	Erases all FLASH Sectors in Bank 1. More...

FLASH_Status	FLASH_EraseAllBank2Sectors (uint8_t VoltageRange)
	Erases all FLASH Sectors in Bank 2. More...

FLASH_Status	FLASH_ProgramDoubleWord (uint32_t Address, uint64_t Data)
	Programs a double word (64-bit) at a specified address. More...

FLASH_Status	FLASH_ProgramWord (uint32_t Address, uint32_t Data)
	Programs a word (32-bit) at a specified address. More...

FLASH_Status	FLASH_ProgramHalfWord (uint32_t Address, uint16_t Data)
	Programs a half word (16-bit) at a specified address. More...

FLASH_Status	FLASH_ProgramByte (uint32_t Address, uint8_t Data)
	Programs a byte (8-bit) at a specified address. More...

void	FLASH_OB_Unlock (void)
	Unlocks the FLASH Option Control Registers access. More...

void	FLASH_OB_Lock (void)
	Locks the FLASH Option Control Registers access. More...

void	FLASH_OB_WRPConfig (uint32_t OB_WRP, FunctionalState NewState)
	Enables or disables the write protection of the desired sectors, for the first 1 Mb of the Flash. More...

void	FLASH_OB_WRP1Config (uint32_t OB_WRP, FunctionalState NewState)
	Enables or disables the write protection of the desired sectors, for the second 1 Mb of the Flash. More...

void	FLASH_OB_PCROPSelectionConfig (uint8_t OB_PcROP)
	Select the Protection Mode (SPRMOD). More...

void	FLASH_OB_PCROPConfig (uint32_t OB_PCROP, FunctionalState NewState)
	Enables or disables the read/write protection (PCROP) of the desired sectors, for the first 1 MB of the Flash. More...

void	FLASH_OB_PCROP1Config (uint32_t OB_PCROP, FunctionalState NewState)
	Enables or disables the read/write protection (PCROP) of the desired sectors. More...

void	FLASH_OB_RDPConfig (uint8_t OB_RDP)
	Sets the read protection level. More...

void	FLASH_OB_UserConfig (uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
	Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY. More...

void	FLASH_OB_BORConfig (uint8_t OB_BOR)
	Sets the BOR Level. More...

void	FLASH_OB_BootConfig (uint8_t OB_BOOT)
	Configure the Dual Bank Boot. More...

FLASH_Status	FLASH_OB_Launch (void)
	Launch the option byte loading. More...

uint8_t	FLASH_OB_GetUser (void)
	Returns the FLASH User Option Bytes values. More...

uint16_t	FLASH_OB_GetWRP (void)
	Returns the FLASH Write Protection Option Bytes value. More...

uint16_t	FLASH_OB_GetWRP1 (void)
	Returns the FLASH Write Protection Option Bytes value. More...

uint16_t	FLASH_OB_GetPCROP (void)
	Returns the FLASH PC Read/Write Protection Option Bytes value. More...

uint16_t	FLASH_OB_GetPCROP1 (void)
	Returns the FLASH PC Read/Write Protection Option Bytes value. More...

FlagStatus	FLASH_OB_GetRDP (void)
	Returns the FLASH Read Protection level. More...

uint8_t	FLASH_OB_GetBOR (void)
	Returns the FLASH BOR level. More...

void	FLASH_ITConfig (uint32_t FLASH_IT, FunctionalState NewState)
	Enables or disables the specified FLASH interrupts. More...

FlagStatus	FLASH_GetFlagStatus (uint32_t FLASH_FLAG)
	Checks whether the specified FLASH flag is set or not. More...

void	FLASH_ClearFlag (uint32_t FLASH_FLAG)
	Clears the FLASH's pending flags. More...

FLASH_Status	FLASH_GetStatus (void)
	Returns the FLASH Status. More...

FLASH_Status	FLASH_WaitForLastOperation (void)
	Waits for a FLASH operation to complete. More...

Detailed Description

FLASH driver modules.

Function Documentation

void FLASH_ClearFlag ( uint32_t FLASH_FLAG )

Clears the FLASH's pending flags.

Parameters

FLASH_FLAG

specifies the FLASH flags to clear. This parameter can be any combination of the following values:

FLASH_FLAG_EOP: FLASH End of Operation flag
FLASH_FLAG_OPERR: FLASH operation Error flag
FLASH_FLAG_WRPERR: FLASH Write protected error flag
FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
FLASH_FLAG_PGPERR: FLASH Programming Parallelism error flag
FLASH_FLAG_PGSERR: FLASH Programming Sequence error flag
FLASH_FLAG_RDERR: FLASH Read Protection error flag (STM32F42/43xxx and STM32F401xx devices)

Return values

None

Definition at line 1481 of file stm32f4xx_flash.c.

void FLASH_DataCacheCmd ( FunctionalState NewState )

Enables or disables the Data Cache feature.

Parameters

NewState new state of the Data Cache. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 306 of file stm32f4xx_flash.c.

void FLASH_DataCacheReset ( void )

Resets the Data Cache.

Note: This function must be used only when the Data Cache is disabled.

Parameters

None

Return values

None

Definition at line 338 of file stm32f4xx_flash.c.

FLASH_Status FLASH_EraseAllBank1Sectors ( uint8_t VoltageRange )

Erases all FLASH Sectors in Bank 1.

Note: This function can be used only for STM32F42xxx/43xxx devices.; If an erase and a program operations are requested simultaneously, the erase operation is performed before the program one.

Parameters

VoltageRange

The device voltage range which defines the erase parallelism. This parameter can be one of the following values:

VoltageRange_1: when the device voltage range is 1.8V to 2.1V, the operation will be done by byte (8-bit)
VoltageRange_2: when the device voltage range is 2.1V to 2.7V, the operation will be done by half word (16-bit)
VoltageRange_3: when the device voltage range is 2.7V to 3.6V, the operation will be done by word (32-bit)
VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, the operation will be done by double word (64-bit)

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 586 of file stm32f4xx_flash.c.

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FLASH_Status FLASH_EraseAllBank2Sectors ( uint8_t VoltageRange )

Erases all FLASH Sectors in Bank 2.

Note: This function can be used only for STM32F42xxx/43xxx devices.; If an erase and a program operations are requested simultaneously, the erase operation is performed before the program one.

Parameters

VoltageRange

The device voltage range which defines the erase parallelism. This parameter can be one of the following values:

VoltageRange_1: when the device voltage range is 1.8V to 2.1V, the operation will be done by byte (8-bit)
VoltageRange_2: when the device voltage range is 2.1V to 2.7V, the operation will be done by half word (16-bit)
VoltageRange_3: when the device voltage range is 2.7V to 3.6V, the operation will be done by word (32-bit)
VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, the operation will be done by double word (64-bit)

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 653 of file stm32f4xx_flash.c.

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FLASH_Status FLASH_EraseAllSectors ( uint8_t VoltageRange )

Erases all FLASH Sectors.

Note: If an erase and a program operations are requested simustaneously, the erase operation is performed before the program one.

Parameters

VoltageRange

The device voltage range which defines the erase parallelism. This parameter can be one of the following values:

VoltageRange_1: when the device voltage range is 1.8V to 2.1V, the operation will be done by byte (8-bit)
VoltageRange_2: when the device voltage range is 2.1V to 2.7V, the operation will be done by half word (16-bit)
VoltageRange_3: when the device voltage range is 2.7V to 3.6V, the operation will be done by word (32-bit)
VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, the operation will be done by double word (64-bit)

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 505 of file stm32f4xx_flash.c.

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FLASH_Status FLASH_EraseSector	(	uint32_t	FLASH_Sector,
		uint8_t	VoltageRange
	)

Erases a specified FLASH Sector.

Note: If an erase and a program operations are requested simustaneously, the erase operation is performed before the program one.

Parameters

FLASH_Sector The Sector number to be erased.

Note: For STM32F405xx/407xx and STM32F415xx/417xx devices this parameter can be a value between FLASH_Sector_0 and FLASH_Sector_11.

For STM32F42xxx/43xxx devices this parameter can be a value between FLASH_Sector_0 and FLASH_Sector_23.

For STM32F401xx devices this parameter can be a value between FLASH_Sector_0 and FLASH_Sector_5.

Parameters

VoltageRange

The device voltage range which defines the erase parallelism. This parameter can be one of the following values:

VoltageRange_1: when the device voltage range is 1.8V to 2.1V, the operation will be done by byte (8-bit)
VoltageRange_2: when the device voltage range is 2.1V to 2.7V, the operation will be done by half word (16-bit)
VoltageRange_3: when the device voltage range is 2.7V to 3.6V, the operation will be done by word (32-bit)
VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, the operation will be done by double word (64-bit)

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 437 of file stm32f4xx_flash.c.

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FlagStatus FLASH_GetFlagStatus ( uint32_t FLASH_FLAG )

Checks whether the specified FLASH flag is set or not.

Parameters

FLASH_FLAG

specifies the FLASH flag to check. This parameter can be one of the following values:

FLASH_FLAG_EOP: FLASH End of Operation flag
FLASH_FLAG_OPERR: FLASH operation Error flag
FLASH_FLAG_WRPERR: FLASH Write protected error flag
FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
FLASH_FLAG_PGPERR: FLASH Programming Parallelism error flag
FLASH_FLAG_PGSERR: FLASH Programming Sequence error flag
FLASH_FLAG_RDERR: FLASH (PCROP) Read Protection error flag (STM32F42/43xxx and STM32F401xx devices)
FLASH_FLAG_BSY: FLASH Busy flag

Return values

The	new state of FLASH_FLAG (SET or RESET).

Definition at line 1450 of file stm32f4xx_flash.c.

FLASH_Status FLASH_GetStatus ( void )

Returns the FLASH Status.

Parameters

None

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_RD, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 1496 of file stm32f4xx_flash.c.

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void FLASH_InstructionCacheCmd ( FunctionalState NewState )

Enables or disables the Instruction Cache feature.

Parameters

NewState new state of the Instruction Cache. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 285 of file stm32f4xx_flash.c.

void FLASH_InstructionCacheReset ( void )

Resets the Instruction Cache.

Note: This function must be used only when the Instruction Cache is disabled.

Parameters

None

Return values

None

Definition at line 327 of file stm32f4xx_flash.c.

void FLASH_ITConfig	(	uint32_t	FLASH_IT,
		FunctionalState	NewState
	)

Enables or disables the specified FLASH interrupts.

Parameters

FLASH_IT

specifies the FLASH interrupt sources to be enabled or disabled. This parameter can be any combination of the following values:

FLASH_IT_ERR: FLASH Error Interrupt
FLASH_IT_EOP: FLASH end of operation Interrupt

Return values

None

Definition at line 1418 of file stm32f4xx_flash.c.

void FLASH_Lock ( void )

Locks the FLASH control register access.

Parameters

None

Return values

None

Definition at line 400 of file stm32f4xx_flash.c.

void FLASH_OB_BootConfig ( uint8_t OB_BOOT )

Configure the Dual Bank Boot.

Note: This function can be used only for STM32F42xxx/43xxx devices.

Parameters

OB_BOOT

specifies the Dual Bank Boot Option byte. This parameter can be one of the following values:

OB_Dual_BootEnabled: Dual Bank Boot Enable
OB_Dual_BootDisabled: Dual Bank Boot Disabled

Return values

None

Definition at line 1242 of file stm32f4xx_flash.c.

void FLASH_OB_BORConfig ( uint8_t OB_BOR )

Sets the BOR Level.

Parameters

OB_BOR

specifies the Option Bytes BOR Reset Level. This parameter can be one of the following values:

OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V
OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V
OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V
OB_BOR_OFF: Supply voltage ranges from 1.62 to 2.1 V

Return values

None

Definition at line 1263 of file stm32f4xx_flash.c.

uint8_t FLASH_OB_GetBOR ( void )

Returns the FLASH BOR level.

Parameters

None

Return values

The	FLASH BOR level: OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V OB_BOR_OFF : Supply voltage ranges from 1.62 to 2.1 V

Definition at line 1389 of file stm32f4xx_flash.c.

uint16_t FLASH_OB_GetPCROP ( void )

Returns the FLASH PC Read/Write Protection Option Bytes value.

Note: This function can be used only for STM32F42xxx/43xxx devices and STM32F401xx devices.

Parameters

None

Return values

The	FLASH PC Read/Write Protection Option Bytes value

Definition at line 1338 of file stm32f4xx_flash.c.

uint16_t FLASH_OB_GetPCROP1 ( void )

Returns the FLASH PC Read/Write Protection Option Bytes value.

Note: This function can be used only for STM32F42xxx/43xxx devices.

Parameters

None

Return values

The	FLASH PC Read/Write Protection Option Bytes value

Definition at line 1352 of file stm32f4xx_flash.c.

FlagStatus FLASH_OB_GetRDP ( void )

Returns the FLASH Read Protection level.

Parameters

None

Return values

FLASH

ReadOut Protection Status:

SET, when OB_RDP_Level_1 or OB_RDP_Level_2 is set
RESET, when OB_RDP_Level_0 is set

Definition at line 1365 of file stm32f4xx_flash.c.

uint8_t FLASH_OB_GetUser ( void )

Returns the FLASH User Option Bytes values.

Parameters

None

Return values

The	FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1) and RST_STDBY(Bit2).

Definition at line 1299 of file stm32f4xx_flash.c.

uint16_t FLASH_OB_GetWRP ( void )

Returns the FLASH Write Protection Option Bytes value.

Parameters

None

Return values

The	FLASH Write Protection Option Bytes value

Definition at line 1310 of file stm32f4xx_flash.c.

uint16_t FLASH_OB_GetWRP1 ( void )

Returns the FLASH Write Protection Option Bytes value.

Note: This function can be used only for STM32F42xxx/43xxx devices.

Parameters

None

Return values

The	FLASH Write Protection Option Bytes value

Definition at line 1324 of file stm32f4xx_flash.c.

FLASH_Status FLASH_OB_Launch ( void )

Launch the option byte loading.

Parameters

None

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 1280 of file stm32f4xx_flash.c.

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void FLASH_OB_Lock ( void )

Locks the FLASH Option Control Registers access.

Parameters

None

Return values

None

Definition at line 951 of file stm32f4xx_flash.c.

void FLASH_OB_PCROP1Config	(	uint32_t	OB_PCROP,
		FunctionalState	NewState
	)

Enables or disables the read/write protection (PCROP) of the desired sectors.

Note: This function can be used only for STM32F42xxx/43xxx devices.

Parameters

OB_PCROP	specifies the sector(s) to be read/write protected or unprotected. This parameter can be one of the following values: OB_PCROP: A value between OB_PCROP_Sector12 and OB_PCROP_Sector23 OB_PCROP_Sector_All
Newstate	new state of the Write Protection. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1133 of file stm32f4xx_flash.c.

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void FLASH_OB_PCROPConfig	(	uint32_t	OB_PCROP,
		FunctionalState	NewState
	)

Enables or disables the read/write protection (PCROP) of the desired sectors, for the first 1 MB of the Flash.

Note: This function can be used only for STM32F42xxx/43xxx and STM32F401xx devices.

Parameters

OB_PCROP	specifies the sector(s) to be read/write protected or unprotected. This parameter can be one of the following values: OB_PCROP: A value between OB_PCROP_Sector0 and OB_PCROP_Sector11 for STM32F42xxx/43xxx devices and between OB_PCROP_Sector0 and OB_PCROP_Sector5 for STM32F401xx devices. OB_PCROP_Sector_All
Newstate	new state of the Write Protection. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1096 of file stm32f4xx_flash.c.

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void FLASH_OB_PCROPSelectionConfig ( uint8_t OB_PcROP )

Select the Protection Mode (SPRMOD).

Note

This function can be used only for STM32F42xxx/43xxx and STM32F401xx devices.

After PCROP activation, Option Byte modification is not possible. Exception made for the global Read Out Protection modification level (level1 to level0)

Once SPRMOD bit is active unprotection of a protected sector is not possible

Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag

Some Precautions should be taken when activating the PCROP feature : The active value of nWRPi bits is inverted when PCROP mode is active, this means if SPRMOD = 1 and WRPi = 1 (default value), then the user sector i is read/write protected. In order to avoid activation of PCROP Mode for undesired sectors, please follow the below safety sequence :

Disable PCROP for all Sectors using FLASH_OB_PCROPConfig(OB_PCROP_Sector_All, DISABLE) function for Bank1 or FLASH_OB_PCROP1Config(OB_PCROP_Sector_All, DISABLE) function for Bank2
Enable PCROP for the desired Sector i using FLASH_OB_PCROPConfig(Sector i, ENABLE) function
Activate the PCROP Mode FLASH_OB_PCROPSelectionConfig() function.

Parameters

OB_PCROP

Select the Protection Mode of nWPRi bits This parameter can be one of the following values:

OB_PcROP_Disable: nWRPi control the write protection of respective user sectors.
OB_PcROP_Enable: nWRPi control the read&write protection (PCROP) of respective user sectors.

Return values

None

Definition at line 1066 of file stm32f4xx_flash.c.

void FLASH_OB_RDPConfig ( uint8_t OB_RDP )

Sets the read protection level.

Parameters

OB_RDP

specifies the read protection level. This parameter can be one of the following values:

OB_RDP_Level_0: No protection
OB_RDP_Level_1: Read protection of the memory
OB_RDP_Level_2: Full chip protection

/!\ Warning /!\ When enabling OB_RDP level 2 it's no more possible to go back to level 1 or 0

Return values

None

Definition at line 1169 of file stm32f4xx_flash.c.

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void FLASH_OB_Unlock ( void )

Unlocks the FLASH Option Control Registers access.

Parameters

None

Return values

None

Definition at line 936 of file stm32f4xx_flash.c.

void FLASH_OB_UserConfig	(	uint8_t	OB_IWDG,
		uint8_t	OB_STOP,
		uint8_t	OB_STDBY
	)

Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.

Parameters

OB_IWDG	Selects the IWDG mode This parameter can be one of the following values: OB_IWDG_SW: Software IWDG selected OB_IWDG_HW: Hardware IWDG selected
OB_STOP	Reset event when entering STOP mode. This parameter can be one of the following values: OB_STOP_NoRST: No reset generated when entering in STOP OB_STOP_RST: Reset generated when entering in STOP
OB_STDBY	Reset event when entering Standby mode. This parameter can be one of the following values: OB_STDBY_NoRST: No reset generated when entering in STANDBY OB_STDBY_RST: Reset generated when entering in STANDBY

Return values

None

Definition at line 1201 of file stm32f4xx_flash.c.

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void FLASH_OB_WRP1Config	(	uint32_t	OB_WRP,
		FunctionalState	NewState
	)

Enables or disables the write protection of the desired sectors, for the second 1 Mb of the Flash.

Note: This function can be used only for STM32F42xxx/43xxx devices.; When the memory read out protection is selected (RDP level = 1), it is not possible to program or erase the flash sector i if CortexM4 debug features are connected or boot code is executed in RAM, even if nWRPi = 1; Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1).

Parameters

OB_WRP	specifies the sector(s) to be write protected or unprotected. This parameter can be one of the following values: OB_WRP: A value between OB_WRP_Sector12 and OB_WRP_Sector23 OB_WRP_Sector_All
Newstate	new state of the Write Protection. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1016 of file stm32f4xx_flash.c.

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void FLASH_OB_WRPConfig	(	uint32_t	OB_WRP,
		FunctionalState	NewState
	)

Enables or disables the write protection of the desired sectors, for the first 1 Mb of the Flash.

Note: When the memory read protection level is selected (RDP level = 1), it is not possible to program or erase the flash sector i if CortexM4 debug features are connected or boot code is executed in RAM, even if nWRPi = 1; Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1).

Parameters

OB_WRP	specifies the sector(s) to be write protected or unprotected. This parameter can be one of the following values: OB_WRP: A value between OB_WRP_Sector0 and OB_WRP_Sector11 OB_WRP_Sector_All
Newstate	new state of the Write Protection. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 974 of file stm32f4xx_flash.c.

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void FLASH_PrefetchBufferCmd ( FunctionalState NewState )

Enables or disables the Prefetch Buffer.

Parameters

NewState new state of the Prefetch Buffer. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 263 of file stm32f4xx_flash.c.

FLASH_Status FLASH_ProgramByte	(	uint32_t	Address,
		uint8_t	Data
	)

Programs a byte (8-bit) at a specified address.

Note: This function can be used within all the device supply voltage ranges.; If an erase and a program operations are requested simustaneously, the erase operation is performed before the program one.

Parameters

Address	specifies the address to be programmed. This parameter can be any address in Program memory zone or in OTP zone.
Data	specifies the data to be programmed.

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 837 of file stm32f4xx_flash.c.

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FLASH_Status FLASH_ProgramDoubleWord	(	uint32_t	Address,
		uint64_t	Data
	)

Programs a double word (64-bit) at a specified address.

Note: This function must be used when the device voltage range is from 2.7V to 3.6V and an External Vpp is present.; If an erase and a program operations are requested simustaneously, the erase operation is performed before the program one.

Parameters

Address	specifies the address to be programmed.
Data	specifies the data to be programmed.

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 710 of file stm32f4xx_flash.c.

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FLASH_Status FLASH_ProgramHalfWord	(	uint32_t	Address,
		uint16_t	Data
	)

Programs a half word (16-bit) at a specified address.

Note: This function must be used when the device voltage range is from 2.1V to 3.6V.; If an erase and a program operations are requested simustaneously, the erase operation is performed before the program one.

Parameters

Address	specifies the address to be programmed. This parameter can be any address in Program memory zone or in OTP zone.
Data	specifies the data to be programmed.

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 795 of file stm32f4xx_flash.c.

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FLASH_Status FLASH_ProgramWord	(	uint32_t	Address,
		uint32_t	Data
	)

Programs a word (32-bit) at a specified address.

Note: This function must be used when the device voltage range is from 2.7V to 3.6V.; If an erase and a program operations are requested simustaneously, the erase operation is performed before the program one.

Parameters

Address	specifies the address to be programmed. This parameter can be any address in Program memory zone or in OTP zone.
Data	specifies the data to be programmed.

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 753 of file stm32f4xx_flash.c.

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void FLASH_SetLatency ( uint32_t FLASH_Latency )

Sets the code latency value.

Parameters

FLASH_Latency

specifies the FLASH Latency value. This parameter can be one of the following values:

FLASH_Latency_0: FLASH Zero Latency cycle
FLASH_Latency_1: FLASH One Latency cycle
FLASH_Latency_2: FLASH Two Latency cycles
FLASH_Latency_3: FLASH Three Latency cycles
FLASH_Latency_4: FLASH Four Latency cycles
FLASH_Latency_5: FLASH Five Latency cycles
FLASH_Latency_6: FLASH Six Latency cycles
FLASH_Latency_7: FLASH Seven Latency cycles
FLASH_Latency_8: FLASH Eight Latency cycles
FLASH_Latency_9: FLASH Nine Latency cycles
FLASH_Latency_10: FLASH Teen Latency cycles
FLASH_Latency_11: FLASH Eleven Latency cycles
FLASH_Latency_12: FLASH Twelve Latency cycles
FLASH_Latency_13: FLASH Thirteen Latency cycles
FLASH_Latency_14: FLASH Fourteen Latency cycles
FLASH_Latency_15: FLASH Fifteen Latency cycles

Note: For STM32F405xx/407xx, STM32F415xx/417xx and STM32F401xx devices this parameter can be a value between FLASH_Latency_0 and FLASH_Latency_7.; For STM32F42xxx/43xxx devices this parameter can be a value between FLASH_Latency_0 and FLASH_Latency_15.

Return values

None

Definition at line 248 of file stm32f4xx_flash.c.

void FLASH_Unlock ( void )

Unlocks the FLASH control register access.

Parameters

None

Return values

None

Definition at line 385 of file stm32f4xx_flash.c.

FLASH_Status FLASH_WaitForLastOperation ( void )

Waits for a FLASH operation to complete.

Parameters

None

Return values

FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_ERROR_OPERATION or FLASH_COMPLETE.

Definition at line 1546 of file stm32f4xx_flash.c.

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Detailed Description

Function Documentation