24xxxx_mtd.c File Reference

#include <px4_platform_common/px4_config.h>
#include <px4_platform_common/time.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/ioctl.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/mtd/mtd.h>
#include <perf/perf_counter.h>

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Classes
struct	at24c_dev_s

Macros
#define	CONFIG_AT24XX_SIZE   64
#define	CONFIG_AT24XX_ADDR   0x50
#define	AT24XX_NPAGES   256
#define	AT24XX_PAGESIZE   32
#define	CONFIG_AT24XX_MTD_BLOCKSIZE   AT24XX_PAGESIZE
#define	CONFIG_AT24XX_WRITE_TIMEOUT_MS   20

Functions
static int	at24c_erase (FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks)
static ssize_t	at24c_bread (FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks, FAR uint8_t *buf)
static ssize_t	at24c_bwrite (FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks, FAR const uint8_t *buf)
static int	at24c_ioctl (FAR struct mtd_dev_s *dev, int cmd, unsigned long arg)
void	at24c_test (void)
int	at24c_nuke (void)
static int	at24c_eraseall (FAR struct at24c_dev_s *priv)
FAR struct mtd_dev_s *	at24c_initialize (FAR struct i2c_master_s *dev)

Variables
static struct at24c_dev_s	g_at24c

Macro Definition Documentation

AT24XX_NPAGES

#define AT24XX_NPAGES   256

Definition at line 123 of file 24xxxx_mtd.c.

Referenced by at24c_initialize().

AT24XX_PAGESIZE

#define AT24XX_PAGESIZE   32

Definition at line 124 of file 24xxxx_mtd.c.

Referenced by at24c_bread(), at24c_bwrite(), at24c_eraseall(), and at24c_initialize().

CONFIG_AT24XX_ADDR

#define CONFIG_AT24XX_ADDR   0x50

Definition at line 95 of file 24xxxx_mtd.c.

Referenced by at24c_initialize().

CONFIG_AT24XX_MTD_BLOCKSIZE

#define CONFIG_AT24XX_MTD_BLOCKSIZE   AT24XX_PAGESIZE

Definition at line 145 of file 24xxxx_mtd.c.

Referenced by at24c_bread(), at24c_bwrite(), at24c_ioctl(), and at24c_test().

CONFIG_AT24XX_SIZE

#define CONFIG_AT24XX_SIZE   64

Definition at line 88 of file 24xxxx_mtd.c.

Referenced by at24c_ioctl().

CONFIG_AT24XX_WRITE_TIMEOUT_MS

#define CONFIG_AT24XX_WRITE_TIMEOUT_MS   20

Definition at line 152 of file 24xxxx_mtd.c.

Referenced by at24c_bread(), and at24c_bwrite().

Function Documentation

at24c_bread()

static ssize_t at24c_bread ( FAR struct mtd_dev_s *  dev, off_t  startblock, size_t  nblocks, FAR uint8_t *  buf  )

static

Definition at line 285 of file 24xxxx_mtd.c.

References at24c_dev_s::addr, AT24XX_PAGESIZE, CONFIG_AT24XX_MTD_BLOCKSIZE, CONFIG_AT24XX_WRITE_TIMEOUT_MS, at24c_dev_s::dev, nblocks, at24c_dev_s::npages, at24c_dev_s::pagesize, perf_begin(), perf_count(), perf_end(), at24c_dev_s::perf_errors, at24c_dev_s::perf_resets_retries, and at24c_dev_s::perf_transfers.

Referenced by at24c_initialize(), and at24c_test().

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at24c_bwrite()

static ssize_t at24c_bwrite ( FAR struct mtd_dev_s *  dev, off_t  startblock, size_t  nblocks, FAR const uint8_t *  buf  )

static

Definition at line 379 of file 24xxxx_mtd.c.

References at24c_dev_s::addr, AT24XX_PAGESIZE, CONFIG_AT24XX_MTD_BLOCKSIZE, CONFIG_AT24XX_WRITE_TIMEOUT_MS, at24c_dev_s::dev, nblocks, at24c_dev_s::npages, at24c_dev_s::pagesize, perf_begin(), perf_count(), perf_end(), at24c_dev_s::perf_errors, and at24c_dev_s::perf_transfers.

Referenced by at24c_initialize().

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at24c_erase()

static int at24c_erase ( FAR struct mtd_dev_s *  dev, off_t  startblock, size_t  nblocks  )

static

Definition at line 245 of file 24xxxx_mtd.c.

References nblocks.

Referenced by at24c_initialize().

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at24c_eraseall()

static int at24c_eraseall ( FAR struct at24c_dev_s *  priv )

static

Definition at line 206 of file 24xxxx_mtd.c.

References AT24XX_PAGESIZE, and OK.

Referenced by at24c_ioctl(), and at24c_nuke().

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at24c_initialize()

FAR struct mtd_dev_s* at24c_initialize

(

FAR struct i2c_master_s *

dev

)

Definition at line 540 of file 24xxxx_mtd.c.

References at24c_dev_s::addr, at24c_bread(), at24c_bwrite(), at24c_erase(), at24c_ioctl(), AT24XX_NPAGES, AT24XX_PAGESIZE, CONFIG_AT24XX_ADDR, at24c_dev_s::dev, g_at24c, at24c_dev_s::mtd, at24c_dev_s::npages, at24c_dev_s::pagesize, PC_COUNT, PC_ELAPSED, perf_alloc, perf_begin(), perf_end(), at24c_dev_s::perf_errors, at24c_dev_s::perf_resets_retries, and at24c_dev_s::perf_transfers.

Referenced by mtd_main().

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at24c_ioctl()

static int at24c_ioctl ( FAR struct mtd_dev_s *  dev, int  cmd, unsigned long  arg  )

static

Definition at line 463 of file 24xxxx_mtd.c.

References at24c_eraseall(), CONFIG_AT24XX_MTD_BLOCKSIZE, CONFIG_AT24XX_SIZE, at24c_dev_s::npages, OK, and at24c_dev_s::pagesize.

Referenced by at24c_initialize().

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at24c_nuke()

int at24c_nuke

(

void

)

Definition at line 613 of file 24xxxx_mtd.c.

References at24c_eraseall(), and g_at24c.

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at24c_test()

void at24c_test

(

void

)

Definition at line 256 of file 24xxxx_mtd.c.

References at24c_bread(), CONFIG_AT24XX_MTD_BLOCKSIZE, g_at24c, and at24c_dev_s::mtd.

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Variable Documentation

g_at24c

struct at24c_dev_s g_at24c

static

Definition at line 200 of file 24xxxx_mtd.c.

Referenced by at24c_initialize(), at24c_nuke(), and at24c_test().