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spiflash.h File Reference

SPI flash definitions. More...

#include <sys/device.h>

Go to the source code of this file.

Functions
int	SpiFlashEnable (void)
	Enable SPI device flash programming.
void	SpiFlashId (u_char *id)
int	SpiFlashWriteByte (u_char high, u_short addr, u_char data)
	Write byte to the target's flash memory.
int	SpiFlashWriteWord (u_short addr, u_short data)
	Write word to the target's flash memory.
void	SpiFlashErase (void)
	Erase target's flash memory.

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Detailed Description

SPI flash definitions.

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Function Documentation

int SpiFlashEnable (  void    )

Enable SPI device flash programming. Returns: 0 if device could be located, -1 otherwise.

void SpiFlashErase (  void    )

Erase target's flash memory. Sets all bytes on the target's flash memory to 0xFF. In addtion all lock bits are set to 1 (unprogrammed).

void SpiFlashId (  u_char *    id )

Read SPI device ID. Parameters: id  Three byte character array, which receives the CPU ID.

int SpiFlashWriteByte (  u_char    high, u_short    addr, u_char    data )

Write byte to the target's flash memory. The target must have been erased by a previous call to SpiFlashErase(). Parameters: high  Must be 0 to write the low byte or 8 to write the high byte. addr  Word address to write to. data  Byte value to write. Returns: 0 on success, -1 otherwise.

int SpiFlashWriteWord (  u_short    addr, u_short    data )

Write word to the target's flash memory. Parameters: addr  Word address to write to. data  Word value to write. Returns: 0 on success, -1 otherwise.

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