SPI Flash Driver API

Header File

Source: include/spifs.h

#include <spifs.h>

Functions

int spifs_enable(int port, int gpio_cs, unsigned long speed_hz, int mode)

Enable SPI Flash and mount LFS filesystem

Parameters

• port – [in] SPI Port to use

• gpio_cs – [in] GPIO number connected to SPI chip select

• speed_hz – [in] SPI Speed in Hz (max 10MHz)

• mode – [in] SPI mode

Returns

0 on success, negative value on failure

int spifs_disable(void)

Disable SPI Flash and unmount LFS filesystem

Returns

0 on success, negative value on failure

int spifs_getstatus(void)

Get status of SPI Flash

Returns

SPI Flash status see sfstat_e

Enumerations

enum sfstat_e

SPI Flash status

Values:

enumerator SF_STAT_NOTENABLED

SPI Flash not enabled (Either not found or Initialization error)

enumerator SF_STAT_ENABLED

SPI Flash enabled but not mounted (Filesystem mount issue, Try spifs_enable() again

enumerator SF_STAT_MOUNTED

SPI Flash enabled and filesystem is mounted successfully