dmitrystu
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libusbdev
zrcadlo https://github.com/dmitrystu/libusb_stm32


			
				
					
						
						
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<title>Lightweight USB stack: usb_cdc_proto_unit_desc Struct Reference</title>
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   <div id="projectname">Lightweight USB stack
   &#160;<span id="projectnumber">1.0</span>
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<a href="#pub-attribs">Data Fields</a>  </div>
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<div class="title">usb_cdc_proto_unit_desc Struct Reference<div class="ingroups"><a class="el" href="../../da/d82/a00091.html">USB CDC class</a> &raquo; <a class="el" href="../../dc/d54/a00094.html">USB CDC ISDN subclass</a></div></div>  </div>
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<p>Protocol Unit Functional Descriptor.  
 <a href="../../d7/d9a/a00152.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="../../dc/dee/a00053_source.html">usb_cdci.h</a>&gt;</code></p>
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Data Fields</h2></td></tr>
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uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9a/a00152.html#acc187d1d6bae5f5454a12828067de780">bFunctionLength</a></td></tr>
<tr class="memdesc:acc187d1d6bae5f5454a12828067de780"><td class="mdescLeft">&#160;</td><td class="mdescRight">Size of this functional descriptor, in bytes. <br /></td></tr>
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uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9a/a00152.html#a042c772732b30b5046af597d3d0d15ee">bDescriptorType</a></td></tr>
<tr class="memdesc:a042c772732b30b5046af597d3d0d15ee"><td class="mdescLeft">&#160;</td><td class="mdescRight">CS_INTERFACE descriptor type. <br /></td></tr>
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uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9a/a00152.html#ad73613512de1d1dc0faabdee3d91f4ce">bDescriptorSubType</a></td></tr>
<tr class="memdesc:ad73613512de1d1dc0faabdee3d91f4ce"><td class="mdescLeft">&#160;</td><td class="mdescRight">Network Channel Terminal Functional Descriptor. <br /></td></tr>
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uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9a/a00152.html#a4866a5606a084770c2a741cc357f324e">bEntityId</a></td></tr>
<tr class="memdesc:a4866a5606a084770c2a741cc357f324e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constant uniquely identifying the Unit. <br /></td></tr>
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uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9a/a00152.html#aab1af56dafaa99c5be8354dde4ebb390">bProtocol</a></td></tr>
<tr class="memdesc:aab1af56dafaa99c5be8354dde4ebb390"><td class="mdescLeft">&#160;</td><td class="mdescRight">Protocol code. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Protocol Unit Functional Descriptor. </p>
<p>A communication protocol stack is a combination of communication functions (protocols) into a layered structure. Each layer in the stack presents some abstract function for the layer above according to some layer-interface-standard, making it possible to replace a function with another as long as it conforms to the standard. Each layer may have a set of protocol parameters, defined in Appendix E, to configure it for proper operation in the actual environment and the parameters may be retrieved and/or modified. The Unit state is initially reset. See Section 6.2.23 “SetUnitParameter”, Section 6.2.24 “GetUnitParameter”, and 6.2.25 “ClearUnitParameter” for details. A Protocol Unit Functional Descriptor identifies with bEntityId a specific protocol instance of bProtocol in a stack. It can only occur within the class-specific portion of an Interface descriptor. </p>

<p class="definition">Definition at line <a class="el" href="../../dc/dee/a00053_source.html#l00142">142</a> of file <a class="el" href="../../dc/dee/a00053_source.html">usb_cdci.h</a>.</p>
</div><hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="../../dc/dee/a00053_source.html">usb_cdci.h</a></li>
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