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Flashadds

Data Structures
struct	_FLASHDCB
struct	_FLASHICB
Defines
#define	FLASH   13
#define	SPI_CS_FLASH1   PORT5
#define	SPI_CS_FLASH2   PORT6
#define	PAGE_SIZE   0x0108
Functions
int	FlashInit (NUTDEVICE *dev)
void	flashWritePage (NUTDEVICE *dev, u_int pageNumber, u_char *page)
int	flashReadPage (NUTDEVICE *dev, u_int pageNumber, u_char *page)
int	FlashIOCtl (NUTDEVICE *dev, int req, void *conf)
void	FlashFlush (NUTDEVICE *dev)
Variables
NUTDEVICE	devFlashSpi

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Detailed Description

This module is designed to manage virtual flash device, read and write flash pages. This driver may join two physical devices and manages it, making one virtual device. This driver uses spi driver to access hardware.

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Define Documentation

#define FLASH   13

Unique device number.

#define PAGE_SIZE   0x0108

Flash page size. This is size of physical page in chip.

#define SPI_CS_FLASH1   PORT5

Pin number for CS of first flash chip.

#define SPI_CS_FLASH2   PORT6

Pin number for CS of second flash chip.

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Function Documentation

void FlashFlush (  NUTDEVICE *    dev )

Wait until output buffer isn't empty. (not implemented yet). Parameters: dev  - flash device.

int FlashInit (  NUTDEVICE *    dev )

Method for initialize driver. Call it first. Parameters: dev  - pointer to driver control structure. Returns: 0 - on success -1 on failed.

int FlashIOCtl (  NUTDEVICE *    dev, int    param, void *    value )

Sets driver parameters (not implemented yet). Parameters: dev  - pointer to driver control structure. param  - parameter constat which define parameter name. value  - pointer to structure Returns: 0 - on success -1 on failed.

int flashReadPage (  NUTDEVICE *    dev, u_int    pageNumber, u_char *    page )

Read data from flash. Parameters: dev  - pointer to flash device. pageNumber  - logical number of page to read. page  - pointer to buffer where data will be stored, buffor size is PAGE_SIZE. Examples: adds/app/flash.

void flashWritePage (  NUTDEVICE *    dev, u_int    pageNumber, u_char *    page )

Write data to flash. Non blocking function. Copy data to write buffer, and return. Buffer will be written in background thread. Parameters: dev  - pointer to flash device. pageNumber  - logical number of page to write. page  - pointer to buffor which contains data to write, buffor size is PAGE_SIZE. Examples: adds/app/flash.

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Variable Documentation

NUTDEVICE devFlashSpi

Driver control structure.

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