twi_flash.c File Reference

TWI flash driver. More...

#include <neorv32.h>
#include <system.h>
#include <config.h>
#include <twi_flash.h>
#include <uart.h>

Functions
static int	twi_transfer_byte (int write, uint8_t *data)
int	twi_flash_setup (void)
int	twi_flash_erase (void)
int	twi_flash_stream_get (uint32_t *rdata)
int	twi_flash_stream_put (uint32_t wdata)

Variables
uint32_t	g_flash_addr

Detailed Description

TWI flash driver.

Function Documentation

twi_flash_erase()

int twi_flash_erase

(

void

)

Erase flash. Not required for EEPROM-style TWI memories.

Returns

0 if success, !=0 if error

twi_flash_setup()

int twi_flash_setup

(

void

)

Setup TWI flash.

Returns

0 if success, !=0 if error

twi_flash_stream_get()

int twi_flash_stream_get

(

uint32_t *

rdata

)

Read stream word from TWI flash.

Parameters

[in,out]

rdata

Pointer for returned data (uint32_t).

Returns

0 if success, !=0 if error

twi_flash_stream_put()

int twi_flash_stream_put

(

uint32_t

wdata

)

Write stream word to SPI flash.

Parameters

wdata

TWI flash write data.

Returns

0 if success, !=0 if error

twi_transfer_byte()

static int twi_transfer_byte ( int write, uint8_t * data )

static

Read or write single byte from/to TWI flash.

Parameters

	write	Set for write access.
[in,out]	data	Pointer for read/write data byte.

Returns

0 if success, non-zero if error