settings_arch.c File Reference

Persistent settings low level flash routines lpc21. More...

#include "subsystems/settings.h"
#include "LPC21xx.h"
#include <BOARD_CONFIG>
#include "armVIC.h"

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Data Structures
struct	FlashInfo

Macros
#define	IAP_LOCATION   0x7FFFFFF1
#define	IAP_PREPARE_SECTORS   50
#define	IAP_COPY_RAM_TO_FLASH   51
#define	IAP_ERASE_SECTORS   52
#define	IAP_BLANK_CHECK_SECTORS   53
#define	IAP_READ_PART_ID   54
#define	IAP_COMPARE   56
#define	BOUND   256
#define	FSIZ   8
#define	FCHK   4

Typedefs
typedef void(*	IAP )(uint32_t[], uint32_t[])

Functions
static uint32_t	pflash_checksum (uint32_t ptr, uint32_t size)
static int32_t	flash_detect (FlashInfo *flash)
static int32_t	pflash_erase_page (FlashInfo *flash)
static int32_t	pflash_program_array (FlashInfo *flash, uint32_t dest, uint32_t src)
static int32_t	pflash_program_bytes (FlashInfo *flash, uint32_t src, uint32_t size, uint32_t chksum)
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 lpc21.

Persistent settings low level flash routines stm32.

LPC2148 flash data is located in the last available page

0x00000000: Paparazzi bootloader (16k) 0x00004000: Paparazzi code (480k) 0x0007C000: persistent settings (4k) 0x0007D000: Philips/NXP bootloader (12k)

data flash_addr data_size flash_end - FSIZ checksum flash_end - FCHK

LPC21: minimum write size 256 bytes, endurance 100k cycles, max sector erase time 400ms, max prog time 1ms per 256 bytes

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

struct FlashInfo

Definition at line 65 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

#define BOUND   256

Definition at line 58 of file settings_arch.c.

Referenced by pflash_program_array(), and pflash_program_bytes().

#define FCHK   4

Definition at line 61 of file settings_arch.c.

Referenced by persistent_read(), and pflash_program_bytes().

#define FSIZ   8

Definition at line 60 of file settings_arch.c.

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

#define IAP_BLANK_CHECK_SECTORS   53

Definition at line 53 of file settings_arch.c.

Referenced by pflash_erase_page().

#define IAP_COMPARE   56

Definition at line 55 of file settings_arch.c.

#define IAP_COPY_RAM_TO_FLASH   51

Definition at line 51 of file settings_arch.c.

Referenced by pflash_program_array().

#define IAP_ERASE_SECTORS   52

Definition at line 52 of file settings_arch.c.

Referenced by pflash_erase_page().

#define IAP_LOCATION   0x7FFFFFF1

Definition at line 48 of file settings_arch.c.

Referenced by flash_detect(), pflash_erase_page(), and pflash_program_array().

#define IAP_PREPARE_SECTORS   50

Definition at line 50 of file settings_arch.c.

Referenced by pflash_erase_page(), and pflash_program_array().

#define IAP_READ_PART_ID   54

Definition at line 54 of file settings_arch.c.

Referenced by flash_detect().

Typedef Documentation

typedef void(* IAP)(uint32_t[], uint32_t[])

Definition at line 63 of file settings_arch.c.

Function Documentation

static int32_t flash_detect ( FlashInfo *  flash )

static

Definition at line 96 of file settings_arch.c.

References FlashInfo::addr, disableIRQ(), enableIRQ(), IAP_LOCATION, IAP_READ_PART_ID, FlashInfo::page_nr, and FlashInfo::page_size.

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

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int32_t persistent_clear

(

void

)

Definition at line 285 of file settings_arch.c.

References flash_detect(), and pflash_erase_page().

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int32_t persistent_read	(	void *	ptr,
		uint32_t	size
	)

Definition at line 261 of file settings_arch.c.

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

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int32_t persistent_write	(	void *	ptr,
		uint32_t	size
	)

Definition at line 248 of file settings_arch.c.

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

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static uint32_t pflash_checksum ( uint32_t  ptr, uint32_t  size  )

static

Definition at line 84 of file settings_arch.c.

Referenced by persistent_read(), and persistent_write().

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static int32_t pflash_erase_page ( FlashInfo *  flash )

static

Definition at line 136 of file settings_arch.c.

References disableIRQ(), enableIRQ(), IAP_BLANK_CHECK_SECTORS, IAP_ERASE_SECTORS, IAP_LOCATION, IAP_PREPARE_SECTORS, and FlashInfo::page_nr.

Referenced by persistent_clear(), and pflash_program_bytes().

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static int32_t pflash_program_array ( FlashInfo *  flash, uint32_t  dest, uint32_t  src  )

static

Definition at line 171 of file settings_arch.c.

References BOUND, CCLK, dest, disableIRQ(), enableIRQ(), IAP_COPY_RAM_TO_FLASH, IAP_LOCATION, IAP_PREPARE_SECTORS, and FlashInfo::page_nr.

Referenced by pflash_program_bytes().

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

static

Definition at line 203 of file settings_arch.c.

References FlashInfo::addr, BOUND, FCHK, FSIZ, FlashInfo::page_size, pflash_erase_page(), and pflash_program_array().

Referenced by persistent_write().

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