Class: LIBUSB::Bos::SsplusSublinkAttribute

Inherits:
FFI::Struct
  • Object
show all
Defined in:
lib/libusb/bos.rb

Overview

A structure representing a SuperSpeedPlus descriptor attribute

See Also:

Instance Method Summary collapse

Instance Method Details

#direction ⇒ Object

This field indicates if this Sublink Speed Attribute defines the receive or transmit bit rate.

See Also:



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# File 'lib/libusb/bos.rb', line 226

def direction
  self[:direction]
end

#exponent ⇒ Object

This field defines the base 10 exponent times 3, that shall be applied to the mantissa.

See Also:



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# File 'lib/libusb/bos.rb', line 214

def exponent
  self[:exponent]
end

#inspect ⇒ Object 



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# File 'lib/libusb/bos.rb', line 257

def inspect
  "\#<#{self.class} #{to_s_human_readable}>"
end

#mantissa ⇒ Object

This field defines the mantissa that shall be applied to the exponent when calculating the maximum bit rate.



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# File 'lib/libusb/bos.rb', line 237

def mantissa
  self[:mantissa]
end

#protocol ⇒ Object

This field identifies the protocol supported by the link.

See Also:



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# File 'lib/libusb/bos.rb', line 232

def protocol
  self[:protocol]
end

#ssid ⇒ Object

Sublink Speed Attribute ID (SSID).

This field is an ID that uniquely identifies the speed of this sublink.



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# File 'lib/libusb/bos.rb', line 208

def ssid
  self[:ssid]
end

#to_s_human_readable ⇒ Object 



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# File 'lib/libusb/bos.rb', line 241

def to_s_human_readable
  exponents = {
    SSPLUS_ATTR_EXP_BPS: " ",
    SSPLUS_ATTR_EXP_KBS: "K",
    SSPLUS_ATTR_EXP_MBS: "M",
    SSPLUS_ATTR_EXP_GBS: "G",
    }
  format("id=%u speed=%u%sbs %s %s SuperSpeed%s",
                ssid,
                mantissa,
                exponents[exponent],
                type == :SSPLUS_ATTR_TYPE_ASYM ? "Asym" : "Sym",
                direction == :SSPLUS_ATTR_DIR_TX ? "TX" : "RX",
                protocol == :SSPLUS_ATTR_PROT_SSPLUS ? "+": "" )
end

#type ⇒ Object

This field identifies whether the Sublink Speed Attribute defines a symmetric or asymmetric bit rate.

See Also:



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# File 'lib/libusb/bos.rb', line 220

def type
  self[:type]
end