Ice_flash

Flash chip I/O. More...

Macros
#define	ICE_FLASH_PAGE_SIZE   256
	The size of the flash.
#define	ICE_FLASH_SECTOR_SIZE   4096
#define	ICE_FLASH_BLOCK_SIZE   65536

Functions
int	ice_flash_init (const ice_spibus spibus, int baudrate)
	Initialise the SPI1 peripheral, dedicated to flashing the FPGA.
int	ice_flash_read (const ice_spibus spibus, uint32_t addr, uint8_t *buf, size_t sz)
	Communicate to the chip over SPI and read multiple bytes at chosen address onto onto a buffer.
int	ice_flash_erase_sector (const ice_spibus spibus, uint32_t addr)
	Erase a sector of the flash chip at the given address.
int	ice_flash_program_page (const ice_spibus spibus, uint32_t addr, uint8_t const page[ICE_FLASH_PAGE_SIZE])
	Program a page of the flash chip at the given address.
int	ice_flash_erase_block (const ice_spibus spibus, uint32_t addr)
	Send a command to erase a whole block.
int	ice_flash_erase_chip (const ice_spibus spibus)
	Send a command to erase the whole chip.
int	ice_flash_wakeup (const ice_spibus spibus)
	Send a command to wakeup the chip.
int	ice_flash_sleep (const ice_spibus spibus)
	Send a command to put the chip to sleep.
int	ice_flash_deinit (const ice_spibus spibus)
	Free SPI bus.

Detailed Description

Flash chip I/O.

All these functions act on the on-board flash chip. For a generic flash memory I/O, you can see the low-level ice_smem.h

Function Documentation

ice_flash_erase_block()

int ice_flash_erase_block	(	const ice_spibus	spibus,
		uint32_t	addr
	)

Send a command to erase a whole block.

Parameters

addr	The address at which the data is written.

ice_flash_erase_sector()

int ice_flash_erase_sector	(	const ice_spibus	spibus,
		uint32_t	addr
	)

Erase a sector of the flash chip at the given address.

Parameters

addr	The beginning of the sector.

ice_flash_program_page()

int ice_flash_program_page	(	const ice_spibus	spibus,
		uint32_t	addr,
		uint8_t const	page[ICE_FLASH_PAGE_SIZE]
	)

Program a page of the flash chip at the given address.

Parameters

addr	The address at which the data is written.
data	The buffer holding the data to be sent to the flash chip, of size ICE_FLASH_PAGE_SIZE.

ice_flash_read()

int ice_flash_read	(	const ice_spibus	spibus,
		uint32_t	addr,
		uint8_t *	buf,
		size_t	sz
	)

Communicate to the chip over SPI and read multiple bytes at chosen address onto onto a buffer.

Parameters

addr	The address at which the data is read.
data	The buffer onto which the data read is stored.
data_size	The size of the buffer in bytes.