spi_flash.h File Reference

SPI flash driver. More...

#include <stdint.h>

Go to the source code of this file.

Functions
int	spi_flash_check (void)
int	spi_flash_read_word (uint32_t addr, uint32_t *rdata)
int	spi_flash_write_word (uint32_t addr, uint32_t wdata)
int	spi_flash_erase_sector (uint32_t addr)

Detailed Description

SPI flash driver.

Function Documentation

spi_flash_check()

int spi_flash_check

(

void

)

Check if SPI and flash are available/working by making sure the WEL flag of the flash status register can be set and cleared again.

Returns

0 if success, !=0 if error

spi_flash_erase_sector()

int spi_flash_erase_sector

(

uint32_t

addr

)

Erase sector (64kB) at base address.

Parameters

[in]

addr

Base address of sector to erase.

Returns

0 if success, !=0 if error

spi_flash_read_word()

int spi_flash_read_word	(	uint32_t	addr,
		uint32_t *	rdata )

Read byte from SPI flash.

Parameters

[in]	addr	Word-aligned address.
[in,out]	rdata	Pointer for returned data (uint32_t).

Returns

0 if success, !=0 if error

spi_flash_write_word()

int spi_flash_write_word	(	uint32_t	addr,
		uint32_t	wdata )

Write word to SPI flash.

Parameters

addr	SPI flash write address.
wdata	SPI flash write data.

Returns

0 if success, !=0 if error