settings_arch.c File Reference

Persistent settings low level flash routines stm32. More...

#include "modules/core/settings.h"
#include <libopencm3/stm32/flash.h>
#include <libopencm3/stm32/crc.h>
#include <libopencm3/stm32/dbgmcu.h>

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Data Structures
struct	FlashInfo

Macros
#define	FLASH_BEGIN   0x08000000
#define	FSIZ   8
#define	FCHK   4

Functions
static uint32_t	pflash_checksum (uint32_t ptr, uint32_t size)
static int32_t	flash_detect (struct FlashInfo *flash)
static int32_t	pflash_program_bytes (struct FlashInfo *flash, uint32_t src, uint32_t size, uint32_t chksum)
static int32_t	pflash_erase (struct FlashInfo *flash)
int32_t	persistent_write (void *ptr, uint32_t size)
int32_t	persistent_read (void *ptr, uint32_t size)
int32_t	persistent_clear (void)

Detailed Description

Persistent settings low level flash routines stm32.

data flash_addr data_size flash_end - FSIZ checksum flash_end - FCHK

STM32: minimum write size 2 bytes, endurance 10k cycles, max sector erase time 40ms, max prog time 70us per 2 bytes

Definition in file settings_arch.c.

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Data Structure Documentation

FlashInfo

struct FlashInfo

Definition at line 41 of file settings_arch.c.

Data Fields
uint32_t	addr
uint32_t	page_nr
uint32_t	page_size
uint32_t	total_size

Macro Definition Documentation

FCHK

#define FCHK   4

Definition at line 64 of file settings_arch.c.

FLASH_BEGIN

#define FLASH_BEGIN   0x08000000

Definition at line 62 of file settings_arch.c.

FSIZ

#define FSIZ   8

Definition at line 63 of file settings_arch.c.

Function Documentation

flash_detect()

static int32_t flash_detect ( struct FlashInfo *  flash )

static

Definition at line 110 of file settings_arch.c.

References FlashInfo::addr, FLASH_BEGIN, FlashInfo::page_nr, FlashInfo::page_size, and FlashInfo::total_size.

Referenced by persistent_clear(), persistent_read(), and persistent_write().

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persistent_clear()

int32_t persistent_clear

(

void

)

Definition at line 314 of file settings_arch.c.

References flash_detect(), and pflash_erase().

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persistent_read()

int32_t persistent_read	(	void *	ptr,
		uint32_t	size
	)

Definition at line 290 of file settings_arch.c.

References FlashInfo::addr, FCHK, flash_detect(), FSIZ, FlashInfo::page_size, and pflash_checksum().

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persistent_write()

int32_t persistent_write	(	void *	ptr,
		uint32_t	size
	)

Definition at line 278 of file settings_arch.c.

References flash_detect(), FSIZ, FlashInfo::page_size, pflash_checksum(), and pflash_program_bytes().

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pflash_checksum()

static uint32_t pflash_checksum ( uint32_t  ptr, uint32_t  size  )

static

Definition at line 67 of file settings_arch.c.

Referenced by persistent_read(), and persistent_write().

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pflash_erase()

static int32_t pflash_erase ( struct FlashInfo *  flash )

static

Definition at line 213 of file settings_arch.c.

References FlashInfo::addr, FlashInfo::page_nr, and FlashInfo::page_size.

Referenced by persistent_clear(), and pflash_program_bytes().

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pflash_program_bytes()

static int32_t pflash_program_bytes ( struct FlashInfo *  flash, uint32_t  src, uint32_t  size, uint32_t  chksum  )

static

Definition at line 236 of file settings_arch.c.

References FlashInfo::addr, FCHK, FSIZ, FlashInfo::page_size, and pflash_erase().

Referenced by persistent_write().

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