(8a1a5fe)

USB Device Device Interface Functions More...

#include <stddef.h>
#include <stdint.h>
#include "sw/device/lib/base/macros.h"
#include "sw/device/lib/base/mmio.h"
#include "sw/device/lib/dif/dif_base.h"
#include "sw/device/lib/dif/autogen/dif_usbdev_autogen.h"

Go to the source code of this file.

Data Structures
struct	dif_usbdev_endpoint_id

struct	dif_usbdev_buffer_pool
	Free buffer pool. More...

struct	dif_usbdev_buffer
	A USB device buffer. More...

struct	dif_usbdev_config
	Configuration for initializing a USB device. More...

struct	dif_usbdev_rx_packet_info
	Information about a received packet. More...

struct	dif_usbdev_wake_status

struct	dif_usbdev_phy_pins_sense

struct	dif_usbdev_phy_pins_drive

Macros
#define	USBDEV_NUM_ENDPOINTS 12
	Hardware constants.

#define	USBDEV_MAX_PACKET_SIZE 64

#define	USBDEV_NUM_BUFFERS 32

#define	USBDEV_ENDPOINT_DIR_IN 1

#define	USBDEV_ENDPOINT_DIR_OUT 0

Typedefs
typedef struct dif_usbdev_endpoint_id	dif_usbdev_endpoint_id_t

typedef struct dif_usbdev_buffer_pool	dif_usbdev_buffer_pool_t
	Free buffer pool. More...

typedef enum dif_usbdev_buffer_type	dif_usbdev_buffer_type_t
	Buffer types.

typedef struct dif_usbdev_buffer	dif_usbdev_buffer_t
	A USB device buffer. More...

typedef struct dif_usbdev_config	dif_usbdev_config_t
	Configuration for initializing a USB device.

typedef struct dif_usbdev_rx_packet_info	dif_usbdev_rx_packet_info_t
	Information about a received packet.

typedef enum dif_usbdev_tx_status	dif_usbdev_tx_status_t
	Status of an outgoing packet.

typedef enum dif_usbdev_link_state	dif_usbdev_link_state_t
	USB link state.

typedef struct dif_usbdev_wake_status	dif_usbdev_wake_status_t

typedef struct dif_usbdev_phy_pins_sense	dif_usbdev_phy_pins_sense_t

typedef struct dif_usbdev_phy_pins_drive	dif_usbdev_phy_pins_drive_t

Enumerations
enum	dif_usbdev_buffer_type { kDifUsbdevBufferTypeRead, kDifUsbdevBufferTypeWrite, kDifUsbdevBufferTypeStale }
	Buffer types. More...

enum	dif_usbdev_tx_status { kDifUsbdevTxStatusNoPacket, kDifUsbdevTxStatusPending, kDifUsbdevTxStatusSent, kDifUsbdevTxStatusCancelled }
	Status of an outgoing packet. More...

enum	dif_usbdev_link_state { kDifUsbdevLinkStateDisconnected, kDifUsbdevLinkStatePowered, kDifUsbdevLinkStatePoweredSuspended, kDifUsbdevLinkStateActive, kDifUsbdevLinkStateSuspended, kDifUsbdevLinkStateActiveNoSof, kDifUsbdevLinkStateResuming }
	USB link state.

Functions
OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_configure (const dif_usbdev_t usbdev, dif_usbdev_buffer_pool_t buffer_pool, dif_usbdev_config_t config)
	Configures a USB device with runtime information. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_fill_available_fifos (const dif_usbdev_t usbdev, dif_usbdev_buffer_pool_t buffer_pool)
	Fill the available buffer FIFO of a USB device. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_setup_enable (const dif_usbdev_t *usbdev, uint8_t endpoint, dif_toggle_t new_state)
	Enable or disable reception of SETUP packets for an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_out_enable (const dif_usbdev_t *usbdev, uint8_t endpoint, dif_toggle_t new_state)
	Enable or disable reception of OUT packets for an active endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_set_nak_out_enable (const dif_usbdev_t *usbdev, uint8_t endpoint, dif_toggle_t new_state)
	Enable or disable clearing the out_enable bit after completion of an OUT transaction to an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_stall_enable (const dif_usbdev_t *usbdev, dif_usbdev_endpoint_id_t endpoint, dif_toggle_t new_state)
	Enable or disable STALL for an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_stall_get (const dif_usbdev_t usbdev, dif_usbdev_endpoint_id_t endpoint, bool state)
	Get STALL state of an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_iso_enable (const dif_usbdev_t *usbdev, dif_usbdev_endpoint_id_t endpoint, dif_toggle_t new_state)
	Enable or disable isochronous mode for an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_endpoint_enable (const dif_usbdev_t *usbdev, dif_usbdev_endpoint_id_t endpoint, dif_toggle_t new_state)
	Enable or disable an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_interface_enable (const dif_usbdev_t *usbdev, dif_toggle_t new_state)
	Enable the USB interface of a USB device. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_recv (const dif_usbdev_t usbdev, dif_usbdev_rx_packet_info_t packet_info, dif_usbdev_buffer_t *buffer)
	Get the packet at the front of RX FIFO. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_buffer_read (const dif_usbdev_t usbdev, dif_usbdev_buffer_pool_t buffer_pool, dif_usbdev_buffer_t buffer, uint8_t dst, size_t dst_len, size_t *bytes_written)
	Read incoming packet payload. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_buffer_return (const dif_usbdev_t usbdev, dif_usbdev_buffer_pool_t buffer_pool, dif_usbdev_buffer_t *buffer)
	Return a buffer to the free buffer pool. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_buffer_request (const dif_usbdev_t usbdev, dif_usbdev_buffer_pool_t buffer_pool, dif_usbdev_buffer_t *buffer)
	Request a buffer for outgoing packet payload. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_buffer_write (const dif_usbdev_t usbdev, dif_usbdev_buffer_t buffer, const uint8_t src, size_t src_len, size_t bytes_written)
	Write outgoing packet payload. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_send (const dif_usbdev_t usbdev, uint8_t endpoint, dif_usbdev_buffer_t buffer)
	Mark a packet ready for transmission from an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_get_tx_sent (const dif_usbdev_t usbdev, uint16_t sent)
	Get which IN endpoints have sent packets. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_clear_tx_status (const dif_usbdev_t usbdev, dif_usbdev_buffer_pool_t buffer_pool, uint8_t endpoint)
	Clear the TX state of the provided endpoint and restore its associated buffer to the pool. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_get_tx_status (const dif_usbdev_t usbdev, uint8_t endpoint, dif_usbdev_tx_status_t status)
	Get the status of a packet that has been queued to be sent from an endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_address_set (const dif_usbdev_t *usbdev, uint8_t addr)
	Set the address of a USB device. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_address_get (const dif_usbdev_t usbdev, uint8_t addr)
	Get the address of a USB device. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_data_toggle_out_read (const dif_usbdev_t usbdev, uint16_t toggles)
	Read the data toggle bits of the OUT endpoints. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_data_toggle_in_read (const dif_usbdev_t usbdev, uint16_t toggles)
	Read the data toggle bits of the IN endpoints. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_data_toggle_out_write (const dif_usbdev_t *usbdev, uint16_t mask, uint16_t state)
	Write to the data toggle bits of a subset of the OUT endpoints. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_data_toggle_in_write (const dif_usbdev_t *usbdev, uint16_t mask, uint16_t state)
	Write to the data toggle bits of a subset of the IN endpoints. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_clear_data_toggle (const dif_usbdev_t *usbdev, uint8_t endpoint)
	Clear the data toggle bits for the selected endpoint. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_frame (const dif_usbdev_t usbdev, uint16_t frame_index)
	Get USB frame index. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_host_lost (const dif_usbdev_t usbdev, bool host_lost)
	Check if the host is lost. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_link_state (const dif_usbdev_t usbdev, dif_usbdev_link_state_t link_state)
	Get USB link state. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_sense (const dif_usbdev_t usbdev, bool sense)
	Get the state of the sense pin. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_available_fifo_depths (const dif_usbdev_t usbdev, uint8_t setup_depth, uint8_t *out_depth)
	Get the depths of the AV OUT and AV SETUP FIFOs. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_available_fifo_full (const dif_usbdev_t usbdev, bool setup_is_full, bool *out_is_full)
	Check if AV OUT and AV SETUP FIFOs are full. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_rx_fifo_depth (const dif_usbdev_t usbdev, uint8_t depth)
	Get the depth of the RX FIFO. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_status_get_rx_fifo_empty (const dif_usbdev_t usbdev, bool is_empty)
	Check if the RX FIFO is empty. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_set_osc_test_mode (const dif_usbdev_t *usbdev, dif_toggle_t enable)
	Control whether oscillator test mode is enabled. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_set_wake_enable (const dif_usbdev_t *usbdev, dif_toggle_t enable)
	Control whether the AON wake module is active. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_get_wake_status (const dif_usbdev_t usbdev, dif_usbdev_wake_status_t status)
	Get the status of the AON wake module. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_resume_link_to_active (const dif_usbdev_t *usbdev)
	Force the link state machine to resume to an active state. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_get_phy_pins_status (const dif_usbdev_t usbdev, dif_usbdev_phy_pins_sense_t status)
	Get the current state of the USB PHY pins. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_set_phy_pins_state (const dif_usbdev_t *usbdev, dif_toggle_t override_enable, dif_usbdev_phy_pins_drive_t overrides)
	Control whether to override the USB PHY and drive pins as GPIOs. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_buffer_raw_write (const dif_usbdev_t usbdev, uint8_t id, const uint8_t src, size_t src_len)
	Raw data transfer directly to the packet buffer memory. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_usbdev_buffer_raw_read (const dif_usbdev_t usbdev, uint8_t id, uint8_t dst, size_t dst_len)
	Raw data transfer directly from the packet buffer memory. More...

Detailed Description

USB Device Device Interface Functions

Definition in file dif_usbdev.h.

Data Structure Documentation

◆ dif_usbdev_endpoint_id

struct dif_usbdev_endpoint_id

Definition at line 39 of file dif_usbdev.h.

Data Fields
unsigned int	direction: 1	Endpoint direction. 1 = IN endpoint, 0 = OUT endpoint
unsigned int	number: 4	Endpoint number.
unsigned int	reserved: 3	Reserved. Should be zero.

◆ dif_usbdev_buffer_pool

struct dif_usbdev_buffer_pool

Free buffer pool.

A USB device has a fixed number of buffers that are used for storing incoming and outgoing packets and the software is responsible for keeping track of free buffers. The pool is implemented as a stack for constant-time add and remove. top points to the last free buffer added to the pool. The pool is full when top == USBDEV_NUM_BUFFERS - 1 and empty when top == -1.

Definition at line 63 of file dif_usbdev.h.

Data Fields
uint8_t	buffers[USBDEV_NUM_BUFFERS]
int8_t	top

◆ dif_usbdev_buffer

struct dif_usbdev_buffer

A USB device buffer.

This struct represents a USB device buffer that has been provided to a client in response to a buffer request. Clients should treat instances of this struct as opaque objects and should pass them to the appropriate functions of this library to read and write payloads of incoming and outgoing packets, respectively.

See also: dif_usbdev_recv, dif_usbdev_buffer_read, dif_usbdev_buffer_request, dif_usbdev_buffer_write, dif_usbdev_send, dif_usbdev_buffer_return.

Definition at line 101 of file dif_usbdev.h.

Data Fields
uint8_t	id	Hardware buffer id.
uint8_t	offset	Byte offset for the next read or write operation.
uint8_t	remaining_bytes	For read buffers: remaining number of bytes to read. For write buffers: remaining number of bytes that can be written.
dif_usbdev_buffer_type_t	type	Type of this buffer.

◆ dif_usbdev_config

struct dif_usbdev_config

Configuration for initializing a USB device.

Definition at line 124 of file dif_usbdev.h.

Data Fields
dif_toggle_t	clock_sync_signals	Reference signal generation for clock synchronization.
dif_toggle_t	have_differential_receiver	Activate the single-ended D signal for detecting K and J symbols, for use with a differential receiver.
dif_toggle_t	pin_flip	Flip the D+/D- pins.
dif_toggle_t	single_bit_eop
dif_toggle_t	use_tx_d_se0	Use the TX interface with D and SE0 signals instead of Dp/Dn, for use with certain transceivers.

◆ dif_usbdev_rx_packet_info

struct dif_usbdev_rx_packet_info

Information about a received packet.

Definition at line 320 of file dif_usbdev.h.

Data Fields
uint8_t	endpoint	Endpoint of the packet.
bool	is_setup	Indicates if the packet is a SETUP packet.
uint8_t	length	Payload length in bytes.

◆ dif_usbdev_wake_status

struct dif_usbdev_wake_status

Definition at line 819 of file dif_usbdev.h.

Data Fields
bool	active	Whether the AON wake module is active.
bool	bus_reset	Whether the USB was reset while the AON wake module was active.
bool	disconnected	Whether the USB disconnected while the AON wake module was active.

◆ dif_usbdev_phy_pins_sense

struct dif_usbdev_phy_pins_sense

Definition at line 862 of file dif_usbdev.h.

Data Fields
bool	output_enable: 1	USB output enable for D+ / D-.
bool	rx_d: 1	USB data input from an external differential receiver, if available.
bool	rx_dn: 1	USB D- input.
bool	rx_dp: 1	USB D+ input.
bool	tx_d: 1	USB transmit data value output.
bool	tx_dn: 1	USB transmit D- output.
bool	tx_dp: 1	USB transmit D+ output.
bool	tx_se0: 1	USB single-ended zero output.
bool	vbus_sense: 1	USB VBUS sense pin.

◆ dif_usbdev_phy_pins_drive

struct dif_usbdev_phy_pins_drive

Definition at line 894 of file dif_usbdev.h.

Data Fields
bool	data: 1	USB data output, encoding K and J when se0 is 0.
bool	diff_receiver_enable: 1	Enable control pin for the differential receiver.
bool	dn: 1	USB D- output. for use with dp.
bool	dn_pullup_en: 1	Controls whether to pull up the D- pin.
bool	dp: 1	USB D+ output, for use with dn.
bool	dp_pullup_en: 1	Controls whether to pull up the D+ pin.
bool	output_enable: 1	USB output enable for D+ / D-.
bool	se0: 1	USB single-ended zero output.

Typedef Documentation

◆ dif_usbdev_buffer_pool_t

typedef struct dif_usbdev_buffer_pool dif_usbdev_buffer_pool_t

Free buffer pool.

A USB device has a fixed number of buffers that are used for storing incoming and outgoing packets and the software is responsible for keeping track of free buffers. The pool is implemented as a stack for constant-time add and remove. top points to the last free buffer added to the pool. The pool is full when top == USBDEV_NUM_BUFFERS - 1 and empty when top == -1.

◆ dif_usbdev_buffer_t

typedef struct dif_usbdev_buffer dif_usbdev_buffer_t

A USB device buffer.

This struct represents a USB device buffer that has been provided to a client in response to a buffer request. Clients should treat instances of this struct as opaque objects and should pass them to the appropriate functions of this library to read and write payloads of incoming and outgoing packets, respectively.

See also: dif_usbdev_recv, dif_usbdev_buffer_read, dif_usbdev_buffer_request, dif_usbdev_buffer_write, dif_usbdev_send, dif_usbdev_buffer_return.

Enumeration Type Documentation

◆ dif_usbdev_buffer_type

enum dif_usbdev_buffer_type

Buffer types.

Enumerator

kDifUsbdevBufferTypeRead

For reading payloads of incoming packets.

kDifUsbdevBufferTypeWrite

For writing payloads of outgoing packets.

kDifUsbdevBufferTypeStale

Clients must not use a buffer after it is handed over to hardware or returned to the free buffer pool.

This type exists to protect against such cases.

Definition at line 71 of file dif_usbdev.h.

◆ dif_usbdev_tx_status

enum dif_usbdev_tx_status

Status of an outgoing packet.

Enumerator
kDifUsbdevTxStatusNoPacket	There is no packet for the given OUT endpoint.
kDifUsbdevTxStatusPending	Packet is pending transmission.
kDifUsbdevTxStatusSent	Packet was sent successfully.
kDifUsbdevTxStatusCancelled	Transmission was canceled due to an incoming SETUP packet.

Definition at line 555 of file dif_usbdev.h.

Function Documentation

◆ dif_usbdev_address_get()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_address_get	(	const dif_usbdev_t *	usbdev,
		uint8_t *	addr
	)

Get the address of a USB device.

Parameters

	usbdev	A USB device.
[out]	addr	Current address.

Returns: The result of the operation.

Definition at line 674 of file dif_usbdev.c.

◆ dif_usbdev_address_set()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_address_set	(	const dif_usbdev_t *	usbdev,
		uint8_t	addr
	)

Set the address of a USB device.

Parameters

usbdev	A USB device.
addr	New address. Only the last 7 bits are significant.

Returns: The result of the operation.

Definition at line 660 of file dif_usbdev.c.

◆ dif_usbdev_buffer_raw_read()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_buffer_raw_read	(	const dif_usbdev_t *	usbdev,
		uint8_t	id,
		uint8_t *	dst,
		size_t	dst_len
	)

Raw data transfer directly from the packet buffer memory.

This is a faster implementation of the generic mmio_memcpy_from_mmio32 that is specialized for the USB device and gives a significant performance improvemenet.

Parameters

usbdev	A USB device.
id	Buffer number.
dst	Destination buffer.
dst_len	Number of bytes to transfer.

Returns: The result of the operation.

Definition at line 1071 of file dif_usbdev.c.

◆ dif_usbdev_buffer_raw_write()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_buffer_raw_write	(	const dif_usbdev_t *	usbdev,
		uint8_t	id,
		const uint8_t *	src,
		size_t	src_len
	)

Raw data transfer directly to the packet buffer memory.

This is a faster implementation of the generic mmio_memcpy_to_mmio32 that is specialized for the USB device and gives a significant performance improvement.

Parameters

usbdev	A USB device.
id	Buffer number.
src	Source data.
src_len	Number of bytes to transfer.

Returns: The result of the operation.

Definition at line 1017 of file dif_usbdev.c.

◆ dif_usbdev_buffer_read()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_buffer_read	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_pool_t *	buffer_pool,
		dif_usbdev_buffer_t *	buffer,
		uint8_t *	dst,
		size_t	dst_len,
		size_t *	bytes_written
	)

Read incoming packet payload.

Clients should call this function with a buffer provided by dif_usbdev_recv to read the payload of an incoming packet. This function copies the smaller of dst_len and remaining number of bytes in the buffer to dst. The buffer that holds the packet payload is returned to the free buffer pool when the entire packet payload is read.

◆ dif_usbdev_buffer_request()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_buffer_request	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_pool_t *	buffer_pool,
		dif_usbdev_buffer_t *	buffer
	)

Request a buffer for outgoing packet payload.

Clients should call this function to request a buffer to write the payload of an outgoing packet. Sending a packet from a particular endpoint to the host involves four main steps:

Calling this function, i.e. dif_usbdev_buffer_request,
Calling dif_usbdev_buffer_write,
Calling dif_usbdev_send, and
Calling dif_usbdev_get_tx_status.

In order to send a packet, clients should first call this function to obtain a buffer for the packet payload. Clients should then call dif_usbdev_buffer_write (one or more times depending on the sizes of their internal buffers) to write the packet payload to this buffer. After writing the packet payload, clients should call dif_usbdev_send to mark the packet as ready for transmission from a particular endpoint. Then, clients should call dif_usbdev_get_tx_status to check the status of the transmission. dif_usbdev_get_tx_status returns the buffer that holds the packet payload to the free buffer pool once the packet is either successfully transmitted or canceled due to an incoming SETUP packet or a link reset. If the packet should no longer be sent, clients can call dif_usbdev_buffer_return to return the buffer to the free buffer pool as long as dif_usbdev_send is not called yet.

See also: dif_usbdev_buffer_write, dif_usbdev_send, dif_usbdev_get_tx_status, dif_usbdev_buffer_return.

Parameters

	usbdev	A USB device.
	buffer_pool	A USB device buffer pool.
[out]	buffer	A buffer for writing outgoing packet payload.

Returns: The result of the operation.

Definition at line 429 of file dif_usbdev.c.

◆ dif_usbdev_buffer_return()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_buffer_return	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_pool_t *	buffer_pool,
		dif_usbdev_buffer_t *	buffer
	)

Return a buffer to the free buffer pool.

This function immediately returns the given buffer to the free buffer pool. Since dif_usbdev_buffer_read and dif_usbdev_get_tx_status return the buffers that they work on to the free buffer pool automatically, this function should only be called to discard the payload of a received packet or a packet that was being prepared for transmission before it is queued for transmission from an endpoint.

See also: dif_usbdev_recv, dif_usbdev_buffer_request.

Parameters

usbdev	A USB device.
buffer_pool	A USB device buffer pool.
buffer	A buffer provided by `dif_usbdev_recv` or `dif_usbdev_buffer_request`.

Returns: The result of the operation.

Definition at line 455 of file dif_usbdev.c.

◆ dif_usbdev_buffer_write()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_buffer_write	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_t *	buffer,
		const uint8_t *	src,
		size_t	src_len,
		size_t *	bytes_written
	)

Write outgoing packet payload.

Clients should call this function with a buffer provided by dif_usbdev_buffer_request to write the payload of an outgoing packet. This function copies the smaller of src_len and remaining number of bytes in the buffer to the buffer. Clients should then call dif_usbdev_send to queue the packet for transmission from a particular endpoint.

See also: dif_usbdev_buffer_request, dif_usbdev_send, dif_usbdev_get_tx_status, dif_usbdev_buffer_return.

Parameters

	usbdev	A USB device.
	buffer	A buffer provided by `dif_usbdev_buffer_request`.
	src	Source buffer.
	src_len	Length of the source buffer.
[out]	bytes_written	Number of bytes written to the USB device buffer.

Returns: The result of the operation.

Definition at line 518 of file dif_usbdev.c.

◆ dif_usbdev_clear_data_toggle()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_clear_data_toggle	(	const dif_usbdev_t *	usbdev,
		uint8_t	endpoint
	)

Clear the data toggle bits for the selected endpoint.

Parameters

usbdev	A USB device.
endpoint	An endpoint number.

Returns: The result of the operation.

Definition at line 742 of file dif_usbdev.c.

◆ dif_usbdev_clear_tx_status()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_clear_tx_status	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_pool_t *	buffer_pool,
		uint8_t	endpoint
	)

Clear the TX state of the provided endpoint and restore its associated buffer to the pool.

Note that this function should only be called when an endpoint has been provided a buffer. Without it, the buffer pool will become corrupted, as this function does not check the status.

In addition, if the endpoint has not yet completed or canceled the transaction, the user must not call this function while the device is in an active state. Otherwise, the user risks corrupting an ongoing transaction.

Parameters

usbdev	A USB device.
buffer_pool	A USB device buffer pool.
endpoint	An IN endpoint number.

Returns: The result of the operation.

Definition at line 598 of file dif_usbdev.c.

◆ dif_usbdev_configure()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_configure	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_pool_t *	buffer_pool,
		dif_usbdev_config_t	config
	)

Configures a USB device with runtime information.

This function should need to be called once for the lifetime of handle.

Parameters

usbdev	A USB device.
buffer_pool	A USB device buffer pool.
config	Runtime configuration parameters for a USB device.

Returns: The result of the operation.

Configures a USB device with runtime information.

Definition at line 213 of file dif_usbdev.c.

◆ dif_usbdev_data_toggle_in_read()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_data_toggle_in_read	(	const dif_usbdev_t *	usbdev,
		uint16_t *	toggles
	)

Read the data toggle bits of the IN endpoints.

Parameters

	usbdev	A USB device.
[out]

Definition at line 702 of file dif_usbdev.c.

◆ dif_usbdev_data_toggle_in_write()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_data_toggle_in_write	(	const dif_usbdev_t *	usbdev,
		uint16_t	mask,
		uint16_t	state
	)

Write to the data toggle bits of a subset of the IN endpoints.

Set 1 in mask to change the data toggle bit of an IN endpoint to the value of the corresponding bit in state.

Parameters

usbdev	A USB device.
mask	Mask of IN endpoint data toggles to be changed.
state	New states of that IN endpoint data toggles being changed.

Returns: The result of the operation.

Definition at line 729 of file dif_usbdev.c.

◆ dif_usbdev_data_toggle_out_read()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_data_toggle_out_read	(	const dif_usbdev_t *	usbdev,
		uint16_t *	toggles
	)

Read the data toggle bits of the OUT endpoints.

Parameters

	usbdev	A USB device.
[out]

Definition at line 688 of file dif_usbdev.c.

◆ dif_usbdev_data_toggle_out_write()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_data_toggle_out_write	(	const dif_usbdev_t *	usbdev,
		uint16_t	mask,
		uint16_t	state
	)

Write to the data toggle bits of a subset of the OUT endpoints.

Set 1 in mask to change the data toggle bit of an OUT endpoint to the value of the corresponding bit in state.

Parameters

usbdev	A USB device.
mask	Mask of OUT endpoint data toggles to be changed.
state	New states of that OUT endpoint data toggles being changed.

Returns: The result of the operation.

Definition at line 716 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_enable	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_endpoint_id_t	endpoint,
		dif_toggle_t	new_state
	)

Enable or disable an endpoint.

An enabled endpoint responds to packets from the host. A disabled endpoint ignores them.

Parameters

usbdev	A USB device.
endpoint	An endpoint.
new_state	New endpoint state.

Returns: The result of the operation.

Definition at line 364 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_iso_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_iso_enable	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_endpoint_id_t	endpoint,
		dif_toggle_t	new_state
	)

Enable or disable isochronous mode for an endpoint.

Isochronous endpoints transfer data periodically. Since isochronous transfers do not have a handshaking stage, isochronous endpoints cannot report errors or STALL conditions.

Parameters

usbdev	A USB device.
endpoint	An endpoint.
new_state	New isochronous state.

Returns: The result of the operation.

Definition at line 352 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_out_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_out_enable	(	const dif_usbdev_t *	usbdev,
		uint8_t	endpoint,
		dif_toggle_t	new_state
	)

Enable or disable reception of OUT packets for an active endpoint.

When disabling reception of OUT packets, what the endpoint will do depends on other factors. If the endpoint is currently configured as a control endpoint (receives SETUP packets) or it is configured as an isochronous endpoint, disabling reception of OUT packets will cause them to be ignored.

If the endpoint is neither a control nor isochronous endpoint, then its behavior depends on whether it is configured to respond with STALL. If the STALL response is not active, then disabling reception will cause usbdev to NAK the packet. Otherwise, the STALL response takes priority, regardless of the setting here.

Parameters

usbdev	A USB device.
endpoint	An OUT endpoint number.
new_state	New OUT packet reception state.

Returns: The result of the operation.

Definition at line 309 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_set_nak_out_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_set_nak_out_enable	(	const dif_usbdev_t *	usbdev,
		uint8_t	endpoint,
		dif_toggle_t	new_state
	)

Enable or disable clearing the out_enable bit after completion of an OUT transaction to an endpoint.

If set_nak_out is enabled, an OUT endpoint will disable reception of OUT packets after each successful OUT transaction to that endpoint, requiring a call to dif_usbdev_endpoint_out_enable() to enable reception again.

Parameters

usbdev	A USB device.
endpoint	An OUT endpoint number.
new_state	New set_nak_on_out state.

Returns: The result of the operation.

Definition at line 316 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_setup_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_setup_enable	(	const dif_usbdev_t *	usbdev,
		uint8_t	endpoint,
		dif_toggle_t	new_state
	)

Enable or disable reception of SETUP packets for an endpoint.

This controls whether the pair of IN and OUT endpoints with the specified endpoint number are control endpoints.

Parameters

usbdev	A USB device.
endpoint	An endpoint number.
new_state	New SETUP packet reception state.

Returns: The result of the operation.

Definition at line 302 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_stall_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_stall_enable	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_endpoint_id_t	endpoint,
		dif_toggle_t	new_state
	)

Enable or disable STALL for an endpoint.

Parameters

usbdev	A USB device.
endpoint	An endpoint ID.
new_state	New STALL state.

Returns: The result of the operation.

Definition at line 323 of file dif_usbdev.c.

◆ dif_usbdev_endpoint_stall_get()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_endpoint_stall_get	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_endpoint_id_t	endpoint,
		bool *	state
	)

Get STALL state of an endpoint.

Parameters

	usbdev	A USB device.
	endpoint	An endpoint ID.
[out]	state	Current STALL state.

Returns: The result of the operation.

Definition at line 335 of file dif_usbdev.c.

◆ dif_usbdev_fill_available_fifos()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_fill_available_fifos	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_buffer_pool_t *	buffer_pool
	)

Fill the available buffer FIFO of a USB device.

The USB device has a small FIFO (AV FIFO) that stores free buffers for incoming packets. It is the responsibility of the software to ensure that the AV FIFO is never empty. If the host tries to send a packet when the AV FIFO is empty, the USB device will respond with a NAK. While this will typically cause the host to retry transmission for regular data packets, there are transactions in the USB protocol during which the USB device is not allowed to send a NAK. Thus, the software must make sure that the AV FIFO is never empty by calling this function periodically.

Parameters

usbdev	A USB device.
buffer_pool	A USB device buffer pool.

Returns: The result of the operation.

Definition at line 259 of file dif_usbdev.c.

◆ dif_usbdev_get_phy_pins_status()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_get_phy_pins_status	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_phy_pins_sense_t *	status
	)

Get the current state of the USB PHY pins.

Parameters

	usbdev	A USB device.
[out]	status	The current state of the pins.

Returns: The result of the operation.

Definition at line 956 of file dif_usbdev.c.

◆ dif_usbdev_get_tx_sent()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_get_tx_sent	(	const dif_usbdev_t *	usbdev,
		uint16_t *	sent
	)

Get which IN endpoints have sent packets.

This function provides which endpoints have buffers that have successfully completed transmission to the host. It may be used to guide calls to dif_usbdev_clear_tx_status to return the used buffer to the pool and clear the state for the next transaction.

Parameters

	usbdev	A USB device.
[out]	sent	A bitmap of which endpoints have sent packets.

Returns: The result of the operation.

Definition at line 588 of file dif_usbdev.c.

◆ dif_usbdev_get_tx_status()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_get_tx_status	(	const dif_usbdev_t *	usbdev,
		uint8_t	endpoint,
		dif_usbdev_tx_status_t *	status
	)

Get the status of a packet that has been queued to be sent from an endpoint.

While the USB device handles transmission errors automatically by retrying transmission, transmission of a packet may be canceled if the endpoint receives a SETUP packet or the link is reset before the queued packet is transmitted. In these cases, clients should handle the SETUP packet or the link reset first and then optionally send the same packet again.

This function does not modify any device state. dif_usbdev_clear_tx_status can be used to clear the status and return the buffer to the pool.

Parameters

	usbdev	A USB device.
	endpoint	An IN endpoint number.
[out]	status	Status of the packet.

Returns: The result of the operation.

Definition at line 624 of file dif_usbdev.c.

◆ dif_usbdev_get_wake_status()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_get_wake_status	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_wake_status_t *	status
	)

Get the status of the AON wake module.

Note that the conditions triggering exit from suspended state must be read before disabling the AON wake module. Once the AON wake module is deactivated, that status information is lost.

Also note that the ordinary resume condition does not report to the usbdev module. Instead, it should be obtained from the module monitoring wakeup sources.

Parameters

	usbdev	A USB device.
[out]	status	The status of the module.

Returns: The result of the operation.

Definition at line 928 of file dif_usbdev.c.

◆ dif_usbdev_interface_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_interface_enable	(	const dif_usbdev_t *	usbdev,
		dif_toggle_t	new_state
	)

Enable the USB interface of a USB device.

Calling this function causes the USB device to assert the full-speed pull-up signal to indicate its presence to the host. Ensure the default endpoint is set up before enabling the interface.

Parameters

usbdev	A USB device.
new_state	New interface state.

Returns: The result of the operation.

Definition at line 377 of file dif_usbdev.c.

◆ dif_usbdev_recv()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_recv	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_rx_packet_info_t *	packet_info,
		dif_usbdev_buffer_t *	buffer
	)

Get the packet at the front of RX FIFO.

The USB device has a small FIFO (RX FIFO) that stores received packets until the software has a chance to process them. It is the responsibility of the software to ensure that the RX FIFO is never full. If the host tries to send a packet when the RX FIFO is full, the USB device will respond with a NAK. While this will typically cause the host to retry transmission for regular data packets, there are transactions in the USB protocol during which the USB device is not allowed to send a NAK. Thus, the software must read received packets as soon as possible.

Reading received packets involves two main steps:

Calling this function, i.e. dif_usbdev_recv, and
Calling dif_usbdev_buffer_read until the entire packet payload is read.

In order to read an incoming packet, clients should first call this function to get information about the packet and the buffer that holds the packet payload. Then, clients should call dif_usbdev_buffer_read with this buffer one or more times (depending on the sizes of their internal buffers) until the entire packet payload is read. Once the entire payload is read, the buffer is returned to the free buffer pool. If the clients want to ignore the payload of a packet, e.g. for an unsupported or a zero-length packet, they can call dif_usbdev_buffer_return to immediately return the buffer to the free buffer pool.

Parameters

	usbdev	A USB device.
[out]	packet_info	Packet information.
[out]	buffer	Buffer that holds the packet payload.

Returns: The result of the operation.

Definition at line 392 of file dif_usbdev.c.

◆ dif_usbdev_resume_link_to_active()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_resume_link_to_active ( const dif_usbdev_t * usbdev )

Force the link state machine to resume to an active state.

This is used when waking from a low-power suspended state to resume to an active state. It moves the usbdev out of the Powered state (from the USB device state machine in the spec) without receiving a bus reset. Without help from software, the usbdev module cannot determine on its own when a bus reset is required.

Parameters

usbdev A USB device.

Returns: The result of the operation.

Definition at line 944 of file dif_usbdev.c.

◆ dif_usbdev_send()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_send	(	const dif_usbdev_t *	usbdev,
		uint8_t	endpoint,
		dif_usbdev_buffer_t *	buffer
	)

Mark a packet ready for transmission from an endpoint.

The USB device has 12 endpoints, each of which can be used to send packets to the host. Since a packet is not actually transmitted to the host until the host sends an IN token, clients must write the packet payload to a device buffer and mark it as ready for transmission from a particular endpoint. A packet queued for transmission from a particular endpoint is transmitted once the host sends an IN token for that endpoint.

After a packet is queued for transmission, clients should check its status by calling dif_usbdev_get_tx_status. While the USB device handles transmission errors automatically by retrying transmission, transmission of a packet may be canceled if the endpoint receives a SETUP packet or the link is reset before the queued packet is transmitted. In these cases, clients should handle the SETUP packet or the link reset first and then optionally send the same packet again. Clients must also make sure that the given endpoint does not already have a packet pending for transmission before calling this function.

See also: dif_usbdev_buffer_request, dif_usbdev_buffer_write, dif_usbdev_get_tx_status, dif_usbdev_buffer_return.

Parameters

usbdev	A USB device.
endpoint	An OUT endpoint number.
buffer	A buffer provided by `dif_usbdev_buffer_request`.

Returns: The result of the operation.

Definition at line 552 of file dif_usbdev.c.

◆ dif_usbdev_set_osc_test_mode()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_set_osc_test_mode	(	const dif_usbdev_t *	usbdev,
		dif_toggle_t	enable
	)

Control whether oscillator test mode is enabled.

In oscillator test mode, usbdev transmits a continuous 0101 pattern for evaluating the reference clock's quality.

Parameters

usbdev	A USB device.
enable	Whether the test mode should be enabled.

Returns: The result of the operation.

Definition at line 897 of file dif_usbdev.c.

◆ dif_usbdev_set_phy_pins_state()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_set_phy_pins_state	(	const dif_usbdev_t *	usbdev,
		dif_toggle_t	override_enable,
		dif_usbdev_phy_pins_drive_t	overrides
	)

Control whether to override the USB PHY and drive pins as GPIOs.

Parameters

usbdev	A USB device.
override_enable	Enable / disable the GPIO-like overrides.
overrides	The values to set the pins to.

Returns: The result of the operation.

Definition at line 982 of file dif_usbdev.c.

◆ dif_usbdev_set_wake_enable()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_set_wake_enable	(	const dif_usbdev_t *	usbdev,
		dif_toggle_t	enable
	)

Control whether the AON wake module is active.

Parameters

usbdev	A USB device.
enable	Whether the AON wake module is enabled.

Returns: The result of the operation.

Definition at line 911 of file dif_usbdev.c.

◆ dif_usbdev_status_get_available_fifo_depths()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_available_fifo_depths	(	const dif_usbdev_t *	usbdev,
		uint8_t *	setup_depth,
		uint8_t *	out_depth
	)

Get the depths of the AV OUT and AV SETUP FIFOs.

See also: dif_usbdev_fill_available_fifos.

Parameters

	usbdev	A USB device.
[out]	setup_depth	Depth of the AV SETUP FIFO.
[out]	out_depth	Depth of the AV OUT FIFO.

Returns: The result of the operation.

Definition at line 836 of file dif_usbdev.c.

◆ dif_usbdev_status_get_available_fifo_full()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_available_fifo_full	(	const dif_usbdev_t *	usbdev,
		bool *	setup_is_full,
		bool *	out_is_full
	)

Check if AV OUT and AV SETUP FIFOs are full.

See also: dif_usbdev_fill_available_fifos.

Parameters

	usbdev	A USB device.
[out]	setup_is_full	State of the AV SETUP FIFO. `true` if full, false otherwise.
[out]	out_is_full	State of the AV OUT FIFO. `true` if full, false otherwise.

Returns: The result of the operation.

Definition at line 854 of file dif_usbdev.c.

◆ dif_usbdev_status_get_frame()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_frame	(	const dif_usbdev_t *	usbdev,
		uint16_t *	frame_index
	)

Get USB frame index.

Parameters

	usbdev	A USB device.
[out]	frame_index	USB frame index.

Returns: The result of the operation.

Definition at line 757 of file dif_usbdev.c.

◆ dif_usbdev_status_get_host_lost()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_host_lost	(	const dif_usbdev_t *	usbdev,
		bool *	host_lost
	)

Check if the host is lost.

The host is lost if the link is still active but a start of frame packet has not been received in the last 4.096ms.

Parameters

	usbdev	A USB device.
[out]	host_lost	Status of the host. `true` if the host is lost, `false` otherwise.

Returns: The result of the operation.

Definition at line 772 of file dif_usbdev.c.

◆ dif_usbdev_status_get_link_state()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_link_state	(	const dif_usbdev_t *	usbdev,
		dif_usbdev_link_state_t *	link_state
	)

Get USB link state.

Parameters

	usbdev	A USB device.
[out]	link_state	USB link state.

Returns: The result of the operation.

Definition at line 785 of file dif_usbdev.c.

◆ dif_usbdev_status_get_rx_fifo_depth()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_rx_fifo_depth	(	const dif_usbdev_t *	usbdev,
		uint8_t *	depth
	)

Get the depth of the RX FIFO.

◆ dif_usbdev_status_get_rx_fifo_empty()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_rx_fifo_empty	(	const dif_usbdev_t *	usbdev,
		bool *	is_empty
	)

Check if the RX FIFO is empty.

◆ dif_usbdev_status_get_sense()

OT_WARN_UNUSED_RESULT dif_result_t dif_usbdev_status_get_sense	(	const dif_usbdev_t *	usbdev,
		bool *	sense
	)

Get the state of the sense pin.

Parameters

	usbdev	A USB device.
[out]	sense	State of the sense pin. `true` if the host is providing VBUS, `false` otherwise.

Returns: The result of the operation.

Definition at line 824 of file dif_usbdev.c.

(8a1a5fe)

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Data Structure Documentation

◆ dif_usbdev_endpoint_id

◆ dif_usbdev_buffer_pool

◆ dif_usbdev_buffer

◆ dif_usbdev_config

◆ dif_usbdev_rx_packet_info

◆ dif_usbdev_wake_status

◆ dif_usbdev_phy_pins_sense

◆ dif_usbdev_phy_pins_drive

Typedef Documentation

◆ dif_usbdev_buffer_pool_t

◆ dif_usbdev_buffer_t

Enumeration Type Documentation

◆ dif_usbdev_buffer_type

◆ dif_usbdev_tx_status

Function Documentation

◆ dif_usbdev_address_get()

◆ dif_usbdev_address_set()

◆ dif_usbdev_buffer_raw_read()

◆ dif_usbdev_buffer_raw_write()

◆ dif_usbdev_buffer_read()

◆ dif_usbdev_buffer_request()

◆ dif_usbdev_buffer_return()

◆ dif_usbdev_buffer_write()

◆ dif_usbdev_clear_data_toggle()

◆ dif_usbdev_clear_tx_status()

◆ dif_usbdev_configure()

◆ dif_usbdev_data_toggle_in_read()

◆ dif_usbdev_data_toggle_in_write()

◆ dif_usbdev_data_toggle_out_read()

◆ dif_usbdev_data_toggle_out_write()

◆ dif_usbdev_endpoint_enable()

◆ dif_usbdev_endpoint_iso_enable()

◆ dif_usbdev_endpoint_out_enable()

◆ dif_usbdev_endpoint_set_nak_out_enable()

◆ dif_usbdev_endpoint_setup_enable()

◆ dif_usbdev_endpoint_stall_enable()

◆ dif_usbdev_endpoint_stall_get()

◆ dif_usbdev_fill_available_fifos()

◆ dif_usbdev_get_phy_pins_status()

◆ dif_usbdev_get_tx_sent()

◆ dif_usbdev_get_tx_status()

◆ dif_usbdev_get_wake_status()

◆ dif_usbdev_interface_enable()

◆ dif_usbdev_recv()

◆ dif_usbdev_resume_link_to_active()

◆ dif_usbdev_send()

◆ dif_usbdev_set_osc_test_mode()

◆ dif_usbdev_set_phy_pins_state()

◆ dif_usbdev_set_wake_enable()

◆ dif_usbdev_status_get_available_fifo_depths()

◆ dif_usbdev_status_get_available_fifo_full()

◆ dif_usbdev_status_get_frame()

◆ dif_usbdev_status_get_host_lost()

◆ dif_usbdev_status_get_link_state()

◆ dif_usbdev_status_get_rx_fifo_depth()

◆ dif_usbdev_status_get_rx_fifo_empty()

◆ dif_usbdev_status_get_sense()