Data Structures
struct	qspi_command
	QSPI command. More...
Typedefs
typedef struct qspi_s	qspi_t
	QSPI HAL object.
typedef enum qspi_bus_width	qspi_bus_width_t
	QSPI Bus width.
typedef enum qspi_address_size	qspi_address_size_t
	Address size in bits.
typedef uint8_t	qspi_alt_size_t
	Alternative size in bits.
typedef struct qspi_command	qspi_command_t
	QSPI command.
typedef enum qspi_status	qspi_status_t
	QSPI return status.
Enumerations
enum	qspi_bus_width
	QSPI Bus width. More...
enum	qspi_address_size
	Address size in bits. More...
enum	qspi_status { QSPI_STATUS_ERROR = -1, QSPI_STATUS_INVALID_PARAMETER = -2, QSPI_STATUS_OK = 0 }
	QSPI return status. More...
Functions
qspi_status_t	qspi_init (qspi_t *obj, PinName io0, PinName io1, PinName io2, PinName io3, PinName sclk, PinName ssel, uint32_t hz, uint8_t mode)
	Initialize QSPI peripheral.
qspi_status_t	qspi_init_direct (qspi_t obj, const qspi_pinmap_t pinmap, uint32_t hz, uint8_t mode)
	Initialize QSPI peripheral.
qspi_status_t	qspi_free (qspi_t *obj)
	Deinitilize QSPI peripheral.
qspi_status_t	qspi_frequency (qspi_t *obj, int hz)
	Set the QSPI baud rate.
qspi_status_t	qspi_write (qspi_t obj, const qspi_command_t command, const void data, size_t length)
	Send a command and block of data.
qspi_status_t	qspi_command_transfer (qspi_t obj, const qspi_command_t command, const void tx_data, size_t tx_size, void rx_data, size_t rx_size)
	Send a command (and optionally data) and get the response.
qspi_status_t	qspi_read (qspi_t obj, const qspi_command_t command, void data, size_t length)
	Receive a command and block of data.
const PinMap *	qspi_master_sclk_pinmap (void)
	Get the pins that support QSPI SCLK.
const PinMap *	qspi_master_ssel_pinmap (void)
	Get the pins that support QSPI SSEL.
const PinMap *	qspi_master_data0_pinmap (void)
	Get the pins that support QSPI DATA0.
const PinMap *	qspi_master_data1_pinmap (void)
	Get the pins that support QSPI DATA1.
const PinMap *	qspi_master_data2_pinmap (void)
	Get the pins that support QSPI DATA2.
const PinMap *	qspi_master_data3_pinmap (void)
	Get the pins that support QSPI DATA3.

Typedef Documentation

typedef enum qspi_address_size qspi_address_size_t

Address size in bits.

typedef uint8_t qspi_alt_size_t

Alternative size in bits.

Definition at line 79 of file qspi_api.h.

typedef enum qspi_bus_width qspi_bus_width_t

QSPI Bus width.

Some parts of commands provide variable bus width

typedef struct qspi_command qspi_command_t

QSPI command.

Defines a frame format. It consists of instruction, address, alternative, dummy count and data

typedef enum qspi_status qspi_status_t

QSPI return status.

typedef struct qspi_s qspi_t

QSPI HAL object.

Definition at line 40 of file qspi_api.h.

Enumeration Type Documentation

enum qspi_address_size

Address size in bits.

Definition at line 70 of file qspi_api.h.

enum qspi_bus_width

QSPI Bus width.

Some parts of commands provide variable bus width

Definition at line 62 of file qspi_api.h.

enum qspi_status

QSPI return status.

Enumerator:

QSPI_STATUS_ERROR	Generic error >
QSPI_STATUS_INVALID_PARAMETER	The parameter is invalid >
QSPI_STATUS_OK	Function executed sucessfully >

Definition at line 118 of file qspi_api.h.

Function Documentation

qspi_status_t qspi_command_transfer	(	qspi_t *	obj,
		const qspi_command_t *	command,
		const void *	tx_data,
		size_t	tx_size,
		void *	rx_data,
		size_t	rx_size
	)

Send a command (and optionally data) and get the response.

Can be used to send/receive device specific commands

Parameters:

obj	QSPI object
command	QSPI command
tx_data	TX buffer
tx_size	TX buffer length in bytes
rx_data	RX buffer
rx_size	RX buffer length in bytes

Returns:: QSPI_STATUS_OK if the data has been succesfully sent QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

qspi_status_t qspi_free ( qspi_t * obj )

Deinitilize QSPI peripheral.

It should release pins that are associated with the QSPI object, and disable clocks for QSPI peripheral module that was associated with the object

Parameters:

obj	QSPI object

Returns:: QSPI_STATUS_OK if deinitialisation successfully executed QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

qspi_status_t qspi_frequency	(	qspi_t *	obj,
		int	hz
	)

Set the QSPI baud rate.

Actual frequency may differ from the desired frequency due to available dividers and the bus clock Configures the QSPI peripheral's baud rate

Parameters:

obj	The SPI object to configure
hz	The baud rate in Hz

Returns:: QSPI_STATUS_OK if frequency was set QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

qspi_status_t qspi_init	(	qspi_t *	obj,
		PinName	io0,
		PinName	io1,
		PinName	io2,
		PinName	io3,
		PinName	sclk,
		PinName	ssel,
		uint32_t	hz,
		uint8_t	mode
	)

Initialize QSPI peripheral.

It should initialize QSPI pins (io0-io3, sclk and ssel), set frequency, clock polarity and phase mode. The clock for the peripheral should be enabled

Parameters:

obj	QSPI object
io0	Data pin 0
io1	Data pin 1
io2	Data pin 2
io3	Data pin 3
sclk	The clock pin
ssel	The chip select pin
hz	The bus frequency
mode	Clock polarity and phase mode (0 - 3)

Returns:: QSPI_STATUS_OK if initialisation successfully executed QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

qspi_status_t qspi_init_direct	(	qspi_t *	obj,
		const qspi_pinmap_t *	pinmap,
		uint32_t	hz,
		uint8_t	mode
	)

Initialize QSPI peripheral.

It should initialize QSPI pins (io0-io3, sclk and ssel), set frequency, clock polarity and phase mode. The clock for the peripheral should be enabled

Parameters:

obj	QSPI object
pinmap	pointer to structure which holds static pinmap
hz	The bus frequency
mode	Clock polarity and phase mode (0 - 3)

Returns:: QSPI_STATUS_OK if initialisation successfully executed QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

Definition at line 90 of file static_pinmap.cpp.

const PinMap* qspi_master_data0_pinmap ( void )

Get the pins that support QSPI DATA0.

Return a PinMap array of pins that support QSPI DATA0 in master mode. The array is terminated with {NC, NC, 0}.

Returns:: PinMap array

const PinMap* qspi_master_data1_pinmap ( void )

Get the pins that support QSPI DATA1.

Return a PinMap array of pins that support QSPI DATA1 in master mode. The array is terminated with {NC, NC, 0}.

Returns:: PinMap array

const PinMap* qspi_master_data2_pinmap ( void )

Get the pins that support QSPI DATA2.

Return a PinMap array of pins that support QSPI DATA2 in master mode. The array is terminated with {NC, NC, 0}.

Returns:: PinMap array

const PinMap* qspi_master_data3_pinmap ( void )

Get the pins that support QSPI DATA3.

Return a PinMap array of pins that support QSPI DATA3 in master mode. The array is terminated with {NC, NC, 0}.

Returns:: PinMap array

const PinMap* qspi_master_sclk_pinmap ( void )

Get the pins that support QSPI SCLK.

Return a PinMap array of pins that support QSPI SCLK in master mode. The array is terminated with {NC, NC, 0}.

Returns:: PinMap array

const PinMap* qspi_master_ssel_pinmap ( void )

Get the pins that support QSPI SSEL.

Return a PinMap array of pins that support QSPI SSEL in master mode. The array is terminated with {NC, NC, 0}.

Returns:: PinMap array

qspi_status_t qspi_read	(	qspi_t *	obj,
		const qspi_command_t *	command,
		void *	data,
		size_t *	length
	)

Receive a command and block of data.

Parameters:

	obj	QSPI object
	command	QSPI command
	data	RX buffer
[in,out]	length	in - RX buffer length in bytes, out - number of bytes read

Returns:: QSPI_STATUS_OK if data has been succesfully received QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

qspi_status_t qspi_write	(	qspi_t *	obj,
		const qspi_command_t *	command,
		const void *	data,
		size_t *	length
	)

Send a command and block of data.

Parameters:

	obj	QSPI object
	command	QSPI command
	data	TX buffer
[in,out]	length	in - TX buffer length in bytes, out - number of bytes written

Returns:: QSPI_STATUS_OK if the data has been succesfully sent QSPI_STATUS_INVALID_PARAMETER if invalid parameter found QSPI_STATUS_ERROR otherwise

Type:	Library
Created:	17 Dec 2019
Imports:	79
Forks:	0
Commits:	2
Dependents:	2
Dependencies:	0
Followers:	1

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