558 lines
17 KiB
Groff
558 lines
17 KiB
Groff
.\"
|
|
.\" Copyright (c) 2009 Sylvestre Gallon
|
|
.\"
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd November 18, 2010
|
|
.Dt LIBUSB 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm libusb
|
|
.
|
|
.Nd "USB access library"
|
|
.
|
|
.
|
|
.Sh LIBRARY
|
|
.
|
|
.
|
|
USB access library (libusb -lusb)
|
|
.
|
|
.
|
|
.Sh SYNOPSIS
|
|
.
|
|
.
|
|
.In libusb.h
|
|
.
|
|
.
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
library contains interfaces for directly managing a usb device.
|
|
The current implementation supports v1.0 of the libusb API.
|
|
.
|
|
.
|
|
.Sh LIBRARY INITIALISATION / DEINITIALISATION
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_init libusb_context **ctx
|
|
This function initialises libusb. Must be called at the beginning
|
|
of the program. This function returns 0 on success or LIBUSB_ERROR on
|
|
failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft void
|
|
.Fn libusb_exit "libusb_context *ctx"
|
|
Deinitialise libusb. Must be called at the end of the application.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft const char *
|
|
.Fn libusb_strerror "int code"
|
|
Get ASCII representation of the error given by the
|
|
.Fa code
|
|
argument.
|
|
.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft void
|
|
.Fn libusb_set_debug "libusb_context *ctx" "int level"
|
|
Set debug to the
|
|
.Fa level
|
|
level.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft ssize_t
|
|
.Fn libusb_get_device_list "libusb_context *ctx" "libusb_device ***list"
|
|
Fill into
|
|
.Fa list
|
|
the list of usb device available. All the device created by this
|
|
function must be unref and free when you are done with them. This
|
|
function returns the number of devices in list or a LIBUSB_ERROR code.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft void
|
|
.Fn libusb_free_device_list "libusb_device **list" "int unref_devices"
|
|
Free the list of devices discovered by libusb_get_device_list. If
|
|
.Fa unref_device
|
|
is set to 1 all devices are unref one time.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft uint8_t
|
|
.Fn libusb_get_bus_number "libusb_device *dev"
|
|
Returns the number of the bus contained by the device
|
|
.Fa dev.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft uint8_t
|
|
.Fn libusb_get_device_address "libusb_device *dev"
|
|
Return the device_address contained by the device
|
|
.Fa dev.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_get_max_packet_size "libusb_device *dev" "unsigned char endpoint"
|
|
Return the wMaxPacketSize value on success, LIBUSB_ERROR_NOT_FOUND if the
|
|
endpoint does not exist and LIBUSB_ERROR_OTHERS on other failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft libusb_device *
|
|
.Fn libusb_ref_device "libusb_device *dev"
|
|
Increment the reference counter of the device
|
|
.Fa dev.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft void
|
|
.Fn libusb_unref_device "libusb_device *dev"
|
|
Decrement the reference counter of the device
|
|
.Fa dev.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_open "libusb_device *dev" "libusb_device_handle **devh"
|
|
Open a device and obtain a device_handle. Return 0 on success,
|
|
LIBUSB_ERROR_NO_MEM on memory allocation problem, LIBUSB_ERROR_ACCESS
|
|
on permission problem, LIBUSB_ERROR_NO_DEVICE if the device has been
|
|
disconnected and a LIBUSB_ERROR code on error.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft libusb_device_handle *
|
|
.Fn libusb_open_device_with_vid_pid "libusb_context *ctx" "uint16_t vid" "uint16_t pid"
|
|
Convenience function to open a device with is
|
|
.Fa vid
|
|
and
|
|
.Fa pid.
|
|
Return NULL on error.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft void
|
|
.Fn libusb_close "libusb_device_handle *devh"
|
|
Close a device handle.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft libusb_device *
|
|
.Fn libusb_get_device(libusb_device_handle *devh)
|
|
Get the device contained by devh. Return NULL on error.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_get_configuration "libusb_device_handle *devh" "int *config"
|
|
Return the bConfiguration value of the current configuration. return 0
|
|
on success, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected
|
|
and a LIBUSB_ERROR code on error.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_set_configuration "libusb_device_handle *devh" "int config"
|
|
Set the active configuration
|
|
.Fa config
|
|
for the device contained by
|
|
.Fa devh.
|
|
This function return 0 on success, LIBUSB_ERROR_NOT_FOUND if the requested
|
|
configuration does not exist, LIBUSB_ERROR_BUSY if the interfaces are currently
|
|
claimed, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and a
|
|
LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_claim_interface "libusb_device_handle *devh" "int interface_number"
|
|
Claim an interface in a given libusb_handle
|
|
.Fa devh.
|
|
This is a non-blocking function. It return 0 success, LIBUSB_ERROR_NOT_FOUND
|
|
if the requested interface does not exist, LIBUSB_ERROR_BUSY if a program or
|
|
driver has claimed the interface, LIBUSB_ERROR_NO_DEVICE if the device has
|
|
been disconnected and a LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_release_interface "libusb_device_handle *devh" "int interface_number"
|
|
This function release an interface. All the claimed interface must be released
|
|
before closing a device. Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the
|
|
interface was not claimed, LIBUSB_ERROR_NO_DEVICE if the device has been
|
|
disconnected and LIBUSB_ERROR on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_set_interface_alt_setting "libusb_device_handle *dev" "int interface_number" "int alternate_setting"
|
|
Activate an alternate setting for an interface. Returns 0 on success,
|
|
LIBUSB_ERROR_NOT_FOUND if the interface was not claimed or the requested
|
|
setting does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been
|
|
disconnected and LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_clear_halt "libusb_device_handle *devh" "unsigned char endpoint"
|
|
Clear an halt/stall for a endpoint. Returns 0 on success, LIBUSB_ERROR_NOT_FOUND
|
|
if the endpoint does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been
|
|
disconnected and a LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_reset_device "libusb_device_handle *devh"
|
|
Perform an USB port reset for an usb device. Returns 0 on success,
|
|
LIBUSB_ERROR_NOT_FOUND if re-enumeration is required or if the device has
|
|
been disconnected and a LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_check_connected "libusb_device_handle *devh"
|
|
Test if USB device is still connected. Returns 0 on success,
|
|
LIBUSB_ERROR_NO_DEVICE if has been disconnected and a LIBUSB_ERROR
|
|
code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_kernel_driver_active "libusb_device_handle *devh" "int interface"
|
|
Determine if a driver is active on a interface. Returns 0 if no kernel driver
|
|
is active, returns 1 if a kernel driver is active, returns LIBUSB_ERROR_NO_DEVICE
|
|
if the device has been disconnected and return a LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_get_driver "libusb_device_handle *devh" "int interface" "char *name" "int namelen"
|
|
or
|
|
.Ft int
|
|
.Fn libusb_get_driver_np "libusb_device_handle *devh" "int interface" "char *name" "int namelen"
|
|
Gets the name of the driver attached to the given
|
|
.Fa device
|
|
and
|
|
.Fa interface
|
|
into the buffer given by
|
|
.Fa name
|
|
and
|
|
.Fa namelen .
|
|
Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if no kernel driver is attached
|
|
to the given interface and LIBUSB_ERROR_INVALID_PARAM if the interface does
|
|
not exist.
|
|
This function is non-portable.
|
|
The buffer pointed to by
|
|
.Fa name
|
|
is only zero terminated on success.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_detach_kernel_driver "libusb_device_handle *devh" "int interface"
|
|
or
|
|
.Ft int
|
|
.Fn libusb_detach_kernel_driver_np "libusb_device_handle *devh" "int interface"
|
|
Detach a kernel driver from an interface.
|
|
This is needed to claim an interface required by a kernel driver.
|
|
Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if no kernel driver was active,
|
|
LIBUSB_ERROR_INVALID_PARAM if the interface does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and a LIBUSB_ERROR code on failure. This function is non-portable.
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_attach_kernel_driver "libusb_device_handle *devh" "int interface"
|
|
Re-attach an interface kernel driver previously detached. Returns 0 on success,
|
|
LIBUSB_ERROR_INVALID_PARAM if the interface does not exist, LIBUSB_ERROR_NO_DEVICE
|
|
if the device has been disconnect, LIBUSB_ERROR_BUSY if the driver cannot be
|
|
attached because the interface is claimed by a program or driver and a
|
|
LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Sh USB DESCRIPTORS
|
|
.
|
|
.Pp
|
|
.
|
|
.Ft int
|
|
.Fn libusb_get_device_descriptor "libusb_device *dev" "libusb_device_descriptor *desc"
|
|
Get the USB device descriptor for the device
|
|
.Fa dev.
|
|
This is a non-blocking function. Returns 0 on success and a LIBUSB_ERROR code on
|
|
failure.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libsub_get_active_config_descriptor "libusb_device *dev" "struct libusb_config_descriptor **config"
|
|
Get the USB configuration descriptor for the active configuration. Returns 0 on
|
|
success, returns LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state
|
|
and return another LIBUSB_ERROR code on error.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_get_config_descriptor "libusb_device *dev" "uint8_t config_index" "libusb_config_descriptor **config"
|
|
Get USB configuration descriptor based on its index
|
|
.Fa idx.
|
|
Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the configuration does not exist
|
|
and returns another LIBUSB_ERROR code on error.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_get_config_descriptor_by_value "libusb_device *dev" "uint8 bConfigurationValue" "libusb_config_descriptor **config"
|
|
Get a USB configuration descriptor with a specific bConfigurationValue. This is
|
|
a non-blocking function which does not send request through the device. Returns 0
|
|
on success, LIBUSB_ERROR_NOT_FOUND if the configuration does not exist and another
|
|
LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_free_config_descriptor "libusb_config_descriptor *config"
|
|
Free a configuration descriptor.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_get_string_descriptor_ascii "libusb_device_handle *devh" "uint8_t desc_idx" "unsigned char *data" "int length"
|
|
Retrieve a string descriptor in C style ascii. Returns a number of byte on success
|
|
and a LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.
|
|
.Sh USB ASYNCHRONOUS I/O
|
|
.
|
|
.Pp
|
|
.Ft struct libusb_transfer *
|
|
.Fn libusb_alloc_transfer "int iso_packets"
|
|
Allocate a transfer with
|
|
.Fa iso_packets
|
|
numbers of isochronous packet descriptors. Returns NULL on error.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_free_transfer "struct libusb_transfer *tr"
|
|
Free a transfer.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_submit_transfer "struct libusb_transfer *tr"
|
|
This function will submit a transfer and returns immediately. Returns 0 on
|
|
success, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and
|
|
LIBUSB_ERROR code on other failure.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_cancel_transfer "struct libusb_transfer *tr"
|
|
This function asynchronously cancel a transfer. Returns 0 on success and
|
|
LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.Sh USB SYNCHRONOUS I/O
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_control_transfer "libusb_device_handle *devh" "uint8_t bmRequestType" "uint8_t bRequest" "uint16_t wValue" "uint16_t wIndex" "unsigned char *data" "uint16_t wLength" "unsigned int timeout"
|
|
Perform a USB control transfer. Returns the actual number of bytes
|
|
transferred on success in the range from and including zero until and
|
|
including
|
|
.Fa wLength .
|
|
On error a libusb error code is returned, for example
|
|
LIBUSB_ERROR_TIMEOUT if the transfer timeout, LIBUSB_ERROR_PIPE if the
|
|
control request was not supported, LIBUSB_ERROR_NO_DEVICE if the
|
|
device has been disconnected or another LIBUSB_ERROR code on other failures.
|
|
The libusb error codes are always negative.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_bulk_transfer "struct libusb_device_handle *devh" "unsigned char endpoint" "unsigned char *data" "int length" "int *transferred" "unsigned int timeout"
|
|
Perform an USB bulk transfer.
|
|
A timeout value of zero means no timeout.
|
|
The timeout value is given in milliseconds.
|
|
Returns 0 on success, LIBUSB_ERROR_TIMEOUT
|
|
if the transfer timeout, LIBUSB_ERROR_PIPE if the control request was not
|
|
supported, LIBUSB_ERROR_OVERFLOW if the device offered more data,
|
|
LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and
|
|
LIBUSB_ERROR code on other failure.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_interrupt_transfer "struct libusb_device_handle *devh" "unsigned char endpoint" "unsigned char *data" "int length" "int *transferred" "unsigned int timeout"
|
|
Perform an USB Interrupt transfer.
|
|
A timeout value of zero means no timeout.
|
|
The timeout value is given in milliseconds.
|
|
Returns 0 on success, LIBUSB_ERROR_TIMEOUT
|
|
if the transfer timeout, LIBUSB_ERROR_PIPE if the control request was not
|
|
supported, LIBUSB_ERROR_OVERFLOW if the device offered more data,
|
|
LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and
|
|
LIBUSB_ERROR code on other failure.
|
|
.
|
|
.Pp
|
|
.Sh USB EVENTS
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_try_lock_events "libusb_context *ctx"
|
|
Try to acquire the event handling lock. Returns 0 if the lock was obtained and 1
|
|
if not.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_lock_events "libusb_context *ctx"
|
|
Acquire the event handling lock. This function is blocking.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_unlock_events "libusb_context *ctx"
|
|
Release the event handling lock. This will wake up any thread blocked
|
|
on libusb_wait_for_event().
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_event_handling_ok "libusb_context *ctx"
|
|
Determine if it still OK for this thread to be doing event handling. Returns 1
|
|
if event handling can start or continue. Returns 0 if this thread must give up
|
|
the events lock.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_event_handler_active "libusb_context *ctx"
|
|
Determine if an active thread is handling events. Returns 1 if yes and 0 if there
|
|
are no threads currently handling events.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_lock_event_waiters "libusb_context *ctx"
|
|
Acquire the event_waiters lock. This lock is designed to be obtained under the
|
|
situation where you want to be aware when events are completed, but some other
|
|
thread is event handling so calling libusb_handle_events() is not allowed.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_unlock_event_waiters "libusb_context *ctx"
|
|
Release the event_waiters lock.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_wait_for_event "libusb_context *ctx" "struct timeval *tv"
|
|
Wait for another thread to signal completion of an event. Must be called
|
|
with the event waiters lock held, see libusb_lock_event_waiters(). This will
|
|
block until the timeout expires or a transfer completes or a thread releases
|
|
the event handling lock through libusb_unlock_events(). Returns 0 after a
|
|
transfer completes or another thread stops event handling, returns 1 if the
|
|
timeout expired.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_handle_events_timeout "libusb_context *ctx" "struct timeval *tv"
|
|
Handle any pending events by checking if timeouts have expired and by
|
|
checking the set of file descriptors for activity. Returns 0 on success, or a
|
|
LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_handle_events "libusb_context *ctx"
|
|
Handle any pending events in blocking mode with a sensible timeout. Returns 0
|
|
on success, returns a LIBUSB_ERROR code on failure.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_handle_events_locked "libusb_context *ctx" "struct timeval *tv"
|
|
Handle any pending events by polling file desciptors, without checking if
|
|
another threads are already doing so. Must be called with the event lock held.
|
|
.
|
|
.Pp
|
|
.Ft int
|
|
.Fn libusb_get_next_timeout "libusb_context *ctx" "struct timeval *tv"
|
|
Determine the next internal timeout that libusb needs to handle. Returns 0
|
|
if there are no pending timeouts, 1 if a timeout was returned, or LIBUSB_ERROR
|
|
code on failure.
|
|
.
|
|
.Pp
|
|
.Ft void
|
|
.Fn libusb_set_pollfd_notifiers "libusb_context *ctx" "libusb_pollfd_added_cb added_cb" "libusb_pollfd_removed_cb remove_cb" "void *user_data"
|
|
Register notification functions for file descriptor additions/removals.
|
|
These functions will be invoked for every new or removed file descriptor
|
|
that libusb uses as an event source.
|
|
.
|
|
.Pp
|
|
.Ft const struct libusb_pollfd **
|
|
.Fn libusb_get_pollfds "libusb_context *ctx"
|
|
Retrive a list of file descriptors that should be polled by your main loop as
|
|
libusb event sources. Returns a NULL-terminated list on success or NULL on failure.
|
|
.
|
|
.Sh LIBUSB VERSION 0.1 COMPATIBILITY
|
|
.Pp
|
|
The library is also compliant with LibUSB version 0.1.12.
|
|
.Pp
|
|
.Fn usb_open
|
|
.Fn usb_close
|
|
.Fn usb_get_string
|
|
.Fn usb_get_string_simple
|
|
.Fn usb_get_descriptor_by_endpoint
|
|
.Fn usb_get_descriptor
|
|
.Fn usb_parse_descriptor
|
|
.Fn usb_parse_configuration
|
|
.Fn usb_destroy_configuration
|
|
.Fn usb_fetch_and_parse_descriptors
|
|
.Fn usb_bulk_write
|
|
.Fn usb_bulk_read
|
|
.Fn usb_interrupt_write
|
|
.Fn usb_interrupt_read
|
|
.Fn usb_control_msg
|
|
.Fn usb_set_configuration
|
|
.Fn usb_claim_interface
|
|
.Fn usb_release_interface
|
|
.Fn usb_set_altinterface
|
|
.Fn usb_resetep
|
|
.Fn usb_clear_halt
|
|
.Fn usb_reset
|
|
.Fn usb_strerror
|
|
.Fn usb_init
|
|
.Fn usb_set_debug
|
|
.Fn usb_find_busses
|
|
.Fn usb_find_devices
|
|
.Fn usb_device
|
|
.Fn usb_get_busses
|
|
.Fn usb_check_connected
|
|
.
|
|
.Sh SEE ALSO
|
|
.Xr libusb20 3 ,
|
|
.Xr usb 4 ,
|
|
.Xr usbconfig 8
|
|
.Pp
|
|
.Pa http://libusb.sourceforge.net/
|
|
.
|
|
.Sh HISTORY
|
|
.
|
|
.Nm
|
|
support first appeared in
|
|
.Fx 8.0 .
|