Qspi#

group bsp_qspi: Control the QSPI flash peripheral.

Author: Alexandre Abadie alexandre.abadie@inria.fr
Copyright: Inria, 2024-present

Defines

DB_QSPI_SCKFREQ_32MHZ#

DB_QSPI_SCKFREQ_16MHZ#

DB_QSPI_SCKFREQ_8MHZ#

DB_QSPI_SCKFREQ_4MHZ#

DB_QSPI_SCKFREQ_2MHZ#

DB_QSPI_SCKFREQ_1MHZ#

Enums

enum db_qspi_mode_t#

SPIM mode.

Values:

enumerator DB_SPIM_MODE_0#: CPOL = 0 (Active High), CPHA = 0 (Leading)

enumerator DB_SPIM_MODE_1#: CPOL = 0 (Active High), CPHA = 1 (Trailing)

enumerator DB_SPIM_MODE_2#: CPOL = 1 (Active Low), CPHA = 0 (Leading)

enumerator DB_SPIM_MODE_3#: CPOL = 1 (Active Low), CPHA = 1 (Trailing)

Functions

void db_qspi_init(const db_qspi_conf_t *conf)#

Initialize the QSPI peripheral.

Parameters:

conf – [in] pointer to configuration struct

void db_qspi_read(const uint32_t addr, void *in, size_t len)#

Read bytes from flash.

Parameters:

addr – [in] 24bit address
in – [in] Pointer to the incoming bytes
len – [in] Length of the bytes to send

void db_qspi_program(const uint32_t addr, const void *out, size_t len)#

Program bytes on flash.

Parameters:

addr – [in] 24bit address
out – [in] Pointer to the output bytes
len – [in] Length of the bytes to receive

void db_qspi_block_erase(const uint32_t addr)#

Erase page/blocks of flash.

Parameters:

addr – [in] 24bit address

void db_qspi_bulk_erase(void)#: Erase all flash.

struct db_qspi_conf_t#

SPIM pin configuration.

Public Members

const gpio_t *io0#: IO0.

const gpio_t *io1#: IO1.

const gpio_t *io2#: IO2.

const gpio_t *io3#: IO3.

const gpio_t *cs#: Chip select.

const gpio_t *sck#: Clock.

uint8_t sckfreq#: QSPI clock frequency. 32MHz / (val + 1)

bool enable_quad#: enable Quad serial mode