spi_flash_test.c File Reference

#include <string.h>
#include <stdio.h>
#include "board.h"
#include "pin_mux.h"
#include "gpio_pins.h"
#include "fsl_gpio_driver.h"
#include "spi_flash/spi_flash.h"
#include "fsl_device_registers.h"
#include "fsl_misc_utilities.h"
#include "cmd_handle.h"
#include "char_handle.h"

Macros
#define	SF_DEFAULT_SPEED
#define	SF_DEFAULT_MODE
#define	SF_DEFAULT_CS
#define	SF_DEFAULT_BUS

Functions
int32_t	spi_cs_activate (spi_slave_dev *spi)
int32_t	spi_cs_deactivate (spi_slave_dev *spi)
static int32_t	do_spi_flash_probe (int32_t argc, char *argv[])
static const char *	spi_flash_update_block (spi_flash *flash, uint32_t offset, size_t len, const int8_t *buf, int8_t *cmp_buf, size_t *skipped)
	Write a block of data to SPI flash, first checking if it is different from what is already there. More...
static int32_t	spi_flash_update (spi_flash *flash, uint32_t offset, size_t len, const int8_t *buf)
static int32_t	do_spi_flash_read_write (int32_t argc, char *argv[])
static int32_t	sf_parse_len_arg (char *arg, uint32_t *len)
	This function computes the length argument for the erase command. More...
static int32_t	do_spi_flash_erase (int32_t argc, char *argv[])
static int32_t	do_spi_flash_print_usage (int32_t argc, char *argv[])
void	main (void)

Variables
static spi_flash *	flash
cmd_tbl_t	sf_cmd_tbl [SPI_FLASH_FUNC_NUM]

Macro Definition Documentation

#define SF_DEFAULT_BUS

#define SF_DEFAULT_CS

#define SF_DEFAULT_MODE

#define SF_DEFAULT_SPEED

Function Documentation

static int32_t do_spi_flash_erase ( int32_t  argc, char *  argv[]  )

static

static int32_t do_spi_flash_print_usage ( int32_t  argc, char *  argv[]  )

static

static int32_t do_spi_flash_probe ( int32_t  argc, char *  argv[]  )

static

static int32_t do_spi_flash_read_write ( int32_t  argc, char *  argv[]  )

static

void main

(

void

)

static int32_t sf_parse_len_arg ( char *  arg, uint32_t *  len  )

static

The length on which the command is to operate can be given in two forms:

1. <cmd> offset len - operate on <'offset', 'len')
2. <cmd> offset +len - operate on <'offset', 'round_up(len)') If the second form is used and the length doesn't fall on the sector boundary, than it will be adjusted to the next sector boundary. If it isn't in the flash, the function will fail (return 1).

Parameters

[in]	arg	length specification (i.e. both command arguments)
[out]	len	computed length for operation

Returns

: 1: success -1: failure (bad format, bad address).

int32_t spi_cs_activate

(

spi_slave_dev *

spi

)

int32_t spi_cs_deactivate

(

spi_slave_dev *

spi

)

static int32_t spi_flash_update ( spi_flash *  flash, uint32_t  offset, size_t  len, const int8_t *  buf  )

static

Update an area of SPI flash by erasing and writing any blocks which need to change. Existing blocks with the correct data are left unchanged.

Parameters

[in]	flash	flash context pointer
[in]	offset	flash offset to write
[in]	len	number of bytes to write
[in]	buf	buffer to write from

Returns

0 if ok, 1 on error

static const char* spi_flash_update_block ( spi_flash *  flash, uint32_t  offset, size_t  len, const int8_t *  buf, int8_t *  cmp_buf, size_t *  skipped  )

static

If the data being written is the same, then *skipped is incremented by len.

Parameters

[in]	flash	flash context pointer
[in]	offset	flash offset to write
[in]	len	number of bytes to write
[in]	buf	buffer to write from
[in]	cmp_buf	read buffer to use to compare data
[in]	skipped	Count of skipped data (incremented by this function)

Returns

NULL if OK, else a string containing the stage which failed

Variable Documentation

spi_flash* flash

static

cmd_tbl_t sf_cmd_tbl[SPI_FLASH_FUNC_NUM]