FMC: Hardware flash signature generator

Overview

The MCUXpresso SDK provides a peripheral driver for the Flash Signature generator module of MCUXpresso SDK devices.

The flash module contains a built-in signature generator. This generator can produce a 128-bit signature from a range of flash memory. A typical usage is to verify the flashed contents against a calculated signature (for example, during programming). The signature generator can also be accessed via an IAP function call or ISP command.

Generate flash signature

1. FMC_GenerateFlashSignature() function generates flash signature for a specified address range.

This example code shows how to generate 128-bit flash signature using the FMC driver.

Refer to the driver examples codes located at <SDK_ROOT>/boards/<BOARD>/driver_examples/fmc

Modules
	Fmc_driver

Functions
void	FMC_Init (FMC_Type *base, fmc_config_t *config)
	Initialize FMC module. More...
void	FMC_Deinit (FMC_Type *base)
	Deinit FMC module. More...
void	FMC_GetDefaultConfig (fmc_config_t *config)
	Provides default configuration for fmc module. More...
void	FMC_GenerateFlashSignature (FMC_Type *base, uint32_t startAddress, uint32_t length, fmc_flash_signature_t *flashSignature)
	Generate hardware flash signature. More...

Driver version
#define	FSL_FMC_DRIVER_VERSION   (MAKE_VERSION(2U, 0U, 0U))
	Driver version 2.0.0. More...

Macro Definition Documentation

#define FSL_FMC_DRIVER_VERSION   (MAKE_VERSION(2U, 0U, 0U))

Function Documentation

void FMC_Init	(	FMC_Type *	base,
		fmc_config_t *	config
	)

This function initialize FMC module with user configuration

Parameters

base	The FMC peripheral base address.
config	pointer to user configuration structure.

void FMC_Deinit

(

FMC_Type *

base

)

This function De-initialize FMC module.

Parameters

base	The FMC peripheral base address.

void FMC_GetDefaultConfig

(

fmc_config_t *

config

)

This function provides default configuration for fmc module, the default wait states value is 5.

Parameters

config

pointer to user configuration structure.

void FMC_GenerateFlashSignature	(	FMC_Type *	base,
		uint32_t	startAddress,
		uint32_t	length,
		fmc_flash_signature_t *	flashSignature
	)

This function generates hardware flash signature for specified address range.

Note

This function needs to be excuted out of flash memory.

Parameters

base	The FMC peripheral base address.
startAddress	Flash start address for signature generation.
length	Length of address range.
flashSignature	Pointer which stores the generated flash signarue.