QSPI

QSPI User functions. More...

Functions
int	qspi_user_write (uint8_t *data, int size, int offset, int erase)
	Writes data to the user QSPI data area. More...
uint8_t *	qspi_user_addr ()
	Returns pointer to the user QSPI data area. More...
int	qspi_user_size ()
	Returns size (in bytes) of the user QSPI data area. More...

Detailed Description

QSPI User functions.

DMCP Allocates a single QSPI flash page for use in the user program. It allows to store persistent data (like a configuration values) in a memory mapped area which isn't overwritten by firmware updates.

Use System flash if you need to store more data.

Function Documentation

qspi_user_addr()

uint8_t* qspi_user_addr

(

)

Returns pointer to the user QSPI data area.

Returns

Data pointer

qspi_user_size()

int qspi_user_size

(

)

Returns size (in bytes) of the user QSPI data area.

Returns

Data area size

qspi_user_write()

int qspi_user_write	(	uint8_t *	data,
		int	size,
		int	offset,
		int	erase
	)

Writes data to the user QSPI data area.

Note that nothing is written and write fails if the data write request goes beyond the user area.

Parameters

data	Data pointer
size	Data size to be written (bytes)
offset	Write at this position of the user QSPI data area
erase	(0/1) 1 = Erase the user QSPI data area before write

Returns

0 = Success