Module: LIBUSB

Defined in:
lib/libusb.rb,
lib/libusb/call.rb,
lib/libusb/device.rb,
lib/libusb/context.rb,
lib/libusb/setting.rb,
lib/libusb/endpoint.rb,
lib/libusb/transfer.rb,
lib/libusb/constants.rb,
lib/libusb/interface.rb,
lib/libusb/dev_handle.rb,
lib/libusb/version_gem.rb,
lib/libusb/eventmachine.rb,
lib/libusb/configuration.rb,
lib/libusb/version_struct.rb

Overview

This file is part of Libusb for Ruby.

Libusb for Ruby is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Libusb for Ruby is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with Libusb for Ruby. If not, see <www.gnu.org/licenses/>.

Defined Under Namespace

Modules: Call Classes: BulkTransfer, Configuration, Context, ControlTransfer, DevHandle, Device, Endpoint, Error, Interface, InterruptTransfer, IsoPacket, IsochronousTransfer, Setting, Transfer, Version

Constant Summary collapse

CONTROL_SETUP_SIZE = 
8
DT_DEVICE_SIZE = 
18
DT_CONFIG_SIZE = 
9
DT_INTERFACE_SIZE = 
9
DT_ENDPOINT_SIZE = 
7
DT_ENDPOINT_AUDIO_SIZE =

Audio extension

9
DT_HUB_NONVAR_SIZE = 
7
ENDPOINT_ADDRESS_MASK =

in bEndpointAddress

0x0f
ENDPOINT_DIR_MASK = 
0x80
TRANSFER_TYPE_MASK =

in bmAttributes

0x03
ISO_SYNC_TYPE_MASK = 
0x0C
ISO_USAGE_TYPE_MASK = 
0x30
POLLIN = 
1
POLLOUT = 
4
HOTPLUG_MATCH_ANY =

Wildcard matching for hotplug events.

-1
VERSION =

Library version of libusb for Ruby

"0.4.1"

Class Method Summary collapse

Class Method Details

.dev_string(base_class, sub_class, protocol) ⇒ Object 



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# File 'lib/libusb/constants.rb', line 145

def self.dev_string(base_class, sub_class, protocol)
  if desc = CLASS_CODES_HASH3[[base_class, sub_class, protocol]]
    desc
  elsif desc = CLASS_CODES_HASH2[[base_class, sub_class]]
    desc + " (%02x)" % [protocol]
  elsif desc = CLASS_CODES_HASH1[base_class]
    desc + " (%02x,%02x)" % [sub_class, protocol]
  else
    "Unknown(%02x,%02x,%02x)" % [base_class, sub_class, protocol]
  end
end

.has_capability?(capability) ⇒ Boolean

Check at runtime if the loaded library has a given capability. Available since libusb-1.0.9.

Parameters:

  • capability (Symbol) —

    the Capabilities symbol to check for

Returns:

  • (Boolean) —

    true if the running library has the capability, false otherwise



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# File 'lib/libusb.rb', line 46

def self.has_capability?(capability)
  r = Call.libusb_has_capability(capability)
  return r != 0
end

.raise_error(res, text) ⇒ Object

Raises:

  • (klass) 


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# File 'lib/libusb/constants.rb', line 56

def self.raise_error(res, text)
  klass = ErrorClassForResult[res]
  raise klass, "#{klass} #{text}"
end

.version ⇒ Version

Get version of the underlying libusb library. Available since libusb-1.0.10.

Returns:



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# File 'lib/libusb.rb', line 36

def self.version
  Version.new(Call.libusb_get_version)
end