Overview

The MCUXpresso SDK provides a driver for the Flash In Application Programming (FLASHIAP).
It provides a set of functions to call the on chip in application flash programming interface. User code executing from on chip flash or ram can call these function to erase and write the flash memory.

GFlash In Application Programming operation

FLASHIAP_PrepareSectorForWrite() prepares a sector for write or erase operation.

FLASHIAP_CopyRamToFlash() function programs the flash memory.

FLASHIAP_EraseSector() function erase a flash sector. A sector must be erased before write operation.

Typical use case

/* Prepare sector before erase operation */
FLASHIAP_PrepareSectorForWrite(1, 1);
/* Erase sector 1 */
FLASHIAP_EraseSector(1, 1, SystemCoreClock);
/* Prepare sector before write operation */
FLASHIAP_PrepareSectorForWrite(1, 1);
/* Write sector 1  */
FLASHIAP_CopyRamToFlash(SECTOR_1_ADRESS, DATA_BUFFER_ADDRESS, NUM_OF_BYTES_TO_WRITE, SystemCoreClock);

Files
file	fsl_flashiap.h

Typedefs
typedef void(*	IAP_ENTRY_T )(uint32_t cmd[5], uint32_t stat[4])
	IAP_ENTRY API function type.

Enumerations
enum	_flashiap_status { kStatus_FLASHIAP_Success = kStatus_Success, kStatus_FLASHIAP_InvalidCommand = MAKE_STATUS(kStatusGroup_FLASHIAP, 1U), kStatus_FLASHIAP_SrcAddrError, kStatus_FLASHIAP_DstAddrError, kStatus_FLASHIAP_SrcAddrNotMapped, kStatus_FLASHIAP_DstAddrNotMapped, kStatus_FLASHIAP_CountError, kStatus_FLASHIAP_InvalidSector, kStatus_FLASHIAP_SectorNotblank = MAKE_STATUS(kStatusGroup_FLASHIAP, 8U), kStatus_FLASHIAP_NotPrepared, kStatus_FLASHIAP_CompareError, kStatus_FLASHIAP_Busy, kStatus_FLASHIAP_ParamError, kStatus_FLASHIAP_AddrError = MAKE_STATUS(kStatusGroup_FLASHIAP, 13U), kStatus_FLASHIAP_AddrNotMapped, kStatus_FLASHIAP_NoPower = MAKE_STATUS(kStatusGroup_FLASHIAP, 24U), kStatus_FLASHIAP_NoClock }
	Flashiap status codes. More...

enum	_flashiap_commands { kIapCmd_FLASHIAP_PrepareSectorforWrite = 50U, kIapCmd_FLASHIAP_CopyRamToFlash = 51U, kIapCmd_FLASHIAP_EraseSector = 52U, kIapCmd_FLASHIAP_BlankCheckSector = 53U, kIapCmd_FLASHIAP_ReadPartId = 54U, kIapCmd_FLASHIAP_Read_BootromVersion = 55U, kIapCmd_FLASHIAP_Compare = 56U, kIapCmd_FLASHIAP_ReinvokeISP = 57U, kIapCmd_FLASHIAP_ReadUid = 58U, kIapCmd_FLASHIAP_ErasePage = 59U, kIapCmd_FLASHIAP_ReadMisr = 70U, kIapCmd_FLASHIAP_ReinvokeI2cSpiISP = 71U }
	Flashiap command codes. More...

Functions
static void	iap_entry (uint32_t cmd_param, uint32_t status_result)
	IAP_ENTRY API function type. More...

status_t	FLASHIAP_PrepareSectorForWrite (uint32_t startSector, uint32_t endSector)
	Prepare sector for write operation. More...

status_t	FLASHIAP_CopyRamToFlash (uint32_t dstAddr, uint32_t *srcAddr, uint32_t numOfBytes, uint32_t systemCoreClock)
	Copy RAM to flash. More...

status_t	FLASHIAP_EraseSector (uint32_t startSector, uint32_t endSector, uint32_t systemCoreClock)
	Erase sector. More...

status_t	FLASHIAP_ErasePage (uint32_t startPage, uint32_t endPage, uint32_t systemCoreClock)
	This function erases page(s). More...

status_t	FLASHIAP_BlankCheckSector (uint32_t startSector, uint32_t endSector)
	Blank check sector(s) More...

status_t	FLASHIAP_Compare (uint32_t dstAddr, uint32_t *srcAddr, uint32_t numOfBytes)
	Compare memory contents of flash with ram. More...

Driver version
#define	FSL_FLASHIAP_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
	Version 2.0.0. More...

Macro Definition Documentation

#define FSL_FLASHIAP_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))

Enumeration Type Documentation

enum _flashiap_status

Enumerator
kStatus_FLASHIAP_Success	Api is executed successfully.
kStatus_FLASHIAP_InvalidCommand	Invalid command.
kStatus_FLASHIAP_SrcAddrError	Source address is not on word boundary.
kStatus_FLASHIAP_DstAddrError	Destination address is not on a correct boundary.
kStatus_FLASHIAP_SrcAddrNotMapped	Source address is not mapped in the memory map.
kStatus_FLASHIAP_DstAddrNotMapped	Destination address is not mapped in the memory map.
kStatus_FLASHIAP_CountError	Byte count is not multiple of 4 or is not a permitted value.
kStatus_FLASHIAP_InvalidSector	Sector number is invalid or end sector number is greater than start sector number.
kStatus_FLASHIAP_SectorNotblank	One or more sectors are not blank.
kStatus_FLASHIAP_NotPrepared	Command to prepare sector for write operation was not executed.
kStatus_FLASHIAP_CompareError	Destination and source memory contents do not match.
kStatus_FLASHIAP_Busy	Flash programming hardware interface is busy.
kStatus_FLASHIAP_ParamError	Insufficient number of parameters or invalid parameter.
kStatus_FLASHIAP_AddrError	Address is not on word boundary.
kStatus_FLASHIAP_AddrNotMapped	Address is not mapped in the memory map.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.

enum _flashiap_commands

Enumerator
kIapCmd_FLASHIAP_PrepareSectorforWrite	Prepare Sector for write.
kIapCmd_FLASHIAP_CopyRamToFlash	Copy RAM to flash.
kIapCmd_FLASHIAP_EraseSector	Erase Sector.
kIapCmd_FLASHIAP_BlankCheckSector	Blank check sector.
kIapCmd_FLASHIAP_ReadPartId	Read part id.
kIapCmd_FLASHIAP_Read_BootromVersion	Read bootrom version.
kIapCmd_FLASHIAP_Compare	Compare.
kIapCmd_FLASHIAP_ReinvokeISP	Reinvoke ISP.
kIapCmd_FLASHIAP_ReadUid	Read Uid isp.
kIapCmd_FLASHIAP_ErasePage	Erase Page.
kIapCmd_FLASHIAP_ReadMisr	Read Misr.
kIapCmd_FLASHIAP_ReinvokeI2cSpiISP	Reinvoke I2C/SPI isp.

Function Documentation

static void iap_entry	(	uint32_t *	cmd_param,
		uint32_t *	status_result
	)

inlinestatic

Wrapper for rom iap call

Parameters

cmd_param	IAP command and relevant parameter array.
status_result	IAP status result array.

Return values

None. Status/Result is returned via status_result array.

status_t FLASHIAP_PrepareSectorForWrite	(	uint32_t	startSector,
		uint32_t	endSector
	)

This function prepares sector(s) for write/erase operation. This function must be called before calling the FLASHIAP_CopyRamToFlash() or FLASHIAP_EraseSector() or FLASHIAP_ErasePage() function. The end sector must be greater than or equal to start sector number.

Parameters

startSector	Start sector number.
endSector	End sector number.

Return values

kStatus_FLASHIAP_Success	Api was executed successfully.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.
kStatus_FLASHIAP_InvalidSector	Sector number is invalid or end sector number is greater than start sector number.
kStatus_FLASHIAP_Busy	Flash programming hardware interface is busy.

status_t FLASHIAP_CopyRamToFlash	(	uint32_t	dstAddr,
		uint32_t *	srcAddr,
		uint32_t	numOfBytes,
		uint32_t	systemCoreClock
	)

This function programs the flash memory. Corresponding sectors must be prepared via FLASHIAP_PrepareSectorForWrite before calling calling this function. The addresses should be a 256 byte boundary and the number of bytes should be 256 | 512 | 1024 | 4096.

Parameters

dstAddr	Destination flash address where data bytes are to be written.
srcAddr	Source ram address from where data bytes are to be read.
numOfBytes	Number of bytes to be written.
systemCoreClock	SystemCoreClock in Hz. It is converted to KHz before calling the rom IAP function.

Return values

kStatus_FLASHIAP_Success	Api was executed successfully.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.
kStatus_FLASHIAP_SrcAddrError	Source address is not on word boundary.
kStatus_FLASHIAP_DstAddrError	Destination address is not on a correct boundary.
kStatus_FLASHIAP_SrcAddrNotMapped	Source address is not mapped in the memory map.
kStatus_FLASHIAP_DstAddrNotMapped	Destination address is not mapped in the memory map.
kStatus_FLASHIAP_CountError	Byte count is not multiple of 4 or is not a permitted value.
kStatus_FLASHIAP_NotPrepared	Command to prepare sector for write operation was not executed.
kStatus_FLASHIAP_Busy	Flash programming hardware interface is busy.

status_t FLASHIAP_EraseSector	(	uint32_t	startSector,
		uint32_t	endSector,
		uint32_t	systemCoreClock
	)

This function erases sector(s). The end sector must be greater than or equal to start sector number. FLASHIAP_PrepareSectorForWrite must be called before calling this function.

Parameters

startSector	Start sector number.
endSector	End sector number.
systemCoreClock	SystemCoreClock in Hz. It is converted to KHz before calling the rom IAP function.

Return values

kStatus_FLASHIAP_Success	Api was executed successfully.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.
kStatus_FLASHIAP_InvalidSector	Sector number is invalid or end sector number is greater than start sector number.
kStatus_FLASHIAP_NotPrepared	Command to prepare sector for write operation was not executed.
kStatus_FLASHIAP_Busy	Flash programming hardware interface is busy.

status_t FLASHIAP_ErasePage	(	uint32_t	startPage,
		uint32_t	endPage,
		uint32_t	systemCoreClock
	)

The end page must be greater than or equal to start page number. Corresponding sectors must be prepared via FLASHIAP_PrepareSectorForWrite before calling calling this function.

Parameters

startPage	Start page number
endPage	End page number
systemCoreClock	SystemCoreClock in Hz. It is converted to KHz before calling the rom IAP function.

Return values

kStatus_FLASHIAP_Success	Api was executed successfully.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.
kStatus_FLASHIAP_InvalidSector	Page number is invalid or end page number is greater than start page number
kStatus_FLASHIAP_NotPrepared	Command to prepare sector for write operation was not executed.
kStatus_FLASHIAP_Busy	Flash programming hardware interface is busy.

status_t FLASHIAP_BlankCheckSector	(	uint32_t	startSector,
		uint32_t	endSector
	)

Blank check single or multiples sectors of flash memory. The end sector must be greater than or equal to start sector number. It can be used to verify the sector eraseure after FLASHIAP_EraseSector call.

Parameters

startSector	: Start sector number. Must be greater than or equal to start sector number
endSector	: End sector number

Return values

kStatus_FLASHIAP_Success	One or more sectors are in erased state.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.
kStatus_FLASHIAP_SectorNotblank	One or more sectors are not blank.

status_t FLASHIAP_Compare	(	uint32_t	dstAddr,
		uint32_t *	srcAddr,
		uint32_t	numOfBytes
	)

This function compares the contents of flash and ram. It can be used to verify the flash memory contents after FLASHIAP_CopyRamToFlash call.

Parameters

dstAddr	Destination flash address.
srcAddr	Source ram address.
numOfBytes	Number of bytes to be compared.

Return values

kStatus_FLASHIAP_Success	Contents of flash and ram match.
kStatus_FLASHIAP_NoPower	Flash memory block is powered down.
kStatus_FLASHIAP_NoClock	Flash memory block or controller is not clocked.
kStatus_FLASHIAP_AddrError	Address is not on word boundary.
kStatus_FLASHIAP_AddrNotMapped	Address is not mapped in the memory map.
kStatus_FLASHIAP_CountError	Byte count is not multiple of 4 or is not a permitted value.
kStatus_FLASHIAP_CompareError	Destination and source memory contents do not match.

Overview

GFlash In Application Programming operation

Typical use case

Files

Typedefs

Enumerations

Functions

Driver version

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation