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<h1>libusb_endpoint_descriptor Struct Reference<br/>
<small>
[<a class="el" href="group__desc.html">USB descriptors</a>]</small>
</h1><!-- doxytag: class="libusb_endpoint_descriptor" -->
<p>A structure representing the standard USB endpoint descriptor.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="libusb_8h_source.html">libusb.h</a>></code></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa47a5fa31c179e7cb92818c0572c18a3"></a><!-- doxytag: member="libusb_endpoint_descriptor::bLength" ref="aa47a5fa31c179e7cb92818c0572c18a3" args="" -->
uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#aa47a5fa31c179e7cb92818c0572c18a3">bLength</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Size of this descriptor (in bytes). <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a609c257394a574af229293bddf26986e">bDescriptorType</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Descriptor type. <a href="#a609c257394a574af229293bddf26986e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a111d087a09cbeded8e15eda9127e23d2">bEndpointAddress</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The address of the endpoint described by this descriptor. <a href="#a111d087a09cbeded8e15eda9127e23d2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a932b84417c46467f9916ecf7b679160b">bmAttributes</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Attributes which apply to the endpoint when it is configured using the bConfigurationValue. <a href="#a932b84417c46467f9916ecf7b679160b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#ac1feafc3d7310b2c8ab360513bcfa7b4">wMaxPacketSize</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Maximum packet size this endpoint is capable of sending/receiving. <a href="#ac1feafc3d7310b2c8ab360513bcfa7b4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a3194f3f04ebd860d59cbdb07d758f9d8">bInterval</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Interval for polling endpoint for data transfers. <a href="#a3194f3f04ebd860d59cbdb07d758f9d8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a9176a6d206a48731244e33a89a2bea0b">bRefresh</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">For audio devices only: the rate at which synchronization feedback is provided. <a href="#a9176a6d206a48731244e33a89a2bea0b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab8408ca33f4e135039b1900c6f50ce6d"></a><!-- doxytag: member="libusb_endpoint_descriptor::bSynchAddress" ref="ab8408ca33f4e135039b1900c6f50ce6d" args="" -->
uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#ab8408ca33f4e135039b1900c6f50ce6d">bSynchAddress</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">For audio devices only: the address if the synch endpoint. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const unsigned char * </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a27a637679d4cd75fd6af5b8ea19a88d6">extra</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Extra descriptors. <a href="#a27a637679d4cd75fd6af5b8ea19a88d6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structlibusb__endpoint__descriptor.html#a0b34ea2919834df309eba8f2775491ae">extra_length</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Length of the extra descriptors, in bytes. <a href="#a0b34ea2919834df309eba8f2775491ae"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>A structure representing the standard USB endpoint descriptor. </p>
<p>This descriptor is documented in section 9.6.3 of the USB 2.0 specification. All multiple-byte fields are represented in host-endian format. </p>
<hr/><h2>Field Documentation</h2>
<a class="anchor" id="a609c257394a574af229293bddf26986e"></a><!-- doxytag: member="libusb_endpoint_descriptor::bDescriptorType" ref="a609c257394a574af229293bddf26986e" args="" -->
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<td class="memname">uint8_t <a class="el" href="structlibusb__endpoint__descriptor.html#a609c257394a574af229293bddf26986e">libusb_endpoint_descriptor::bDescriptorType</a></td>
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<div class="memdoc">
<p>Descriptor type. </p>
<p>Will have value <a class="el" href="group__desc.html#gga0a2e8a25dfdebf29fdd4764dcdbc1a9ca97df43465eec9e6db81346f521777815">libusb_descriptor_type::LIBUSB_DT_ENDPOINT</a> LIBUSB_DT_ENDPOINT in this context. </p>
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<a class="anchor" id="a111d087a09cbeded8e15eda9127e23d2"></a><!-- doxytag: member="libusb_endpoint_descriptor::bEndpointAddress" ref="a111d087a09cbeded8e15eda9127e23d2" args="" -->
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<td class="memname">uint8_t <a class="el" href="structlibusb__endpoint__descriptor.html#a111d087a09cbeded8e15eda9127e23d2">libusb_endpoint_descriptor::bEndpointAddress</a></td>
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<p>The address of the endpoint described by this descriptor. </p>
<p>Bits 0:3 are the endpoint number. Bits 4:6 are reserved. Bit 7 indicates direction, see <a class="el" href="group__desc.html#ga86c880af878493aa8f805c2aba654b8b">libusb_endpoint_direction</a>. </p>
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<a class="anchor" id="a932b84417c46467f9916ecf7b679160b"></a><!-- doxytag: member="libusb_endpoint_descriptor::bmAttributes" ref="a932b84417c46467f9916ecf7b679160b" args="" -->
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<td class="memname">uint8_t <a class="el" href="structlibusb__endpoint__descriptor.html#a932b84417c46467f9916ecf7b679160b">libusb_endpoint_descriptor::bmAttributes</a></td>
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<p>Attributes which apply to the endpoint when it is configured using the bConfigurationValue. </p>
<p>Bits 0:1 determine the transfer type and correspond to <a class="el" href="group__desc.html#gacb52027036a07de6ecc6c2bf07d07c71">libusb_transfer_type</a>. Bits 2:3 are only used for isochronous endpoints and correspond to <a class="el" href="group__desc.html#gaa2231202dfe12eddca49b1193d44a441">libusb_iso_sync_type</a>. Bits 4:5 are also only used for isochronous endpoints and correspond to <a class="el" href="group__desc.html#gab72474551b0eb965401e6febb856007c">libusb_iso_usage_type</a>. Bits 6:7 are reserved. </p>
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<a class="anchor" id="ac1feafc3d7310b2c8ab360513bcfa7b4"></a><!-- doxytag: member="libusb_endpoint_descriptor::wMaxPacketSize" ref="ac1feafc3d7310b2c8ab360513bcfa7b4" args="" -->
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<td class="memname">uint16_t <a class="el" href="structlibusb__endpoint__descriptor.html#ac1feafc3d7310b2c8ab360513bcfa7b4">libusb_endpoint_descriptor::wMaxPacketSize</a></td>
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<p>Maximum packet size this endpoint is capable of sending/receiving. </p>
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<a class="anchor" id="a3194f3f04ebd860d59cbdb07d758f9d8"></a><!-- doxytag: member="libusb_endpoint_descriptor::bInterval" ref="a3194f3f04ebd860d59cbdb07d758f9d8" args="" -->
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<td class="memname">uint8_t <a class="el" href="structlibusb__endpoint__descriptor.html#a3194f3f04ebd860d59cbdb07d758f9d8">libusb_endpoint_descriptor::bInterval</a></td>
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<div class="memdoc">
<p>Interval for polling endpoint for data transfers. </p>
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<a class="anchor" id="a9176a6d206a48731244e33a89a2bea0b"></a><!-- doxytag: member="libusb_endpoint_descriptor::bRefresh" ref="a9176a6d206a48731244e33a89a2bea0b" args="" -->
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<td class="memname">uint8_t <a class="el" href="structlibusb__endpoint__descriptor.html#a9176a6d206a48731244e33a89a2bea0b">libusb_endpoint_descriptor::bRefresh</a></td>
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<p>For audio devices only: the rate at which synchronization feedback is provided. </p>
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<a class="anchor" id="a27a637679d4cd75fd6af5b8ea19a88d6"></a><!-- doxytag: member="libusb_endpoint_descriptor::extra" ref="a27a637679d4cd75fd6af5b8ea19a88d6" args="" -->
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<td class="memname">const unsigned char* <a class="el" href="structlibusb__endpoint__descriptor.html#a27a637679d4cd75fd6af5b8ea19a88d6">libusb_endpoint_descriptor::extra</a></td>
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<p>Extra descriptors. </p>
<p>If libusb encounters unknown endpoint descriptors, it will store them here, should you wish to parse them. </p>
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<a class="anchor" id="a0b34ea2919834df309eba8f2775491ae"></a><!-- doxytag: member="libusb_endpoint_descriptor::extra_length" ref="a0b34ea2919834df309eba8f2775491ae" args="" -->
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<td class="memname">int <a class="el" href="structlibusb__endpoint__descriptor.html#a0b34ea2919834df309eba8f2775491ae">libusb_endpoint_descriptor::extra_length</a></td>
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<p>Length of the extra descriptors, in bytes. </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="libusb_8h_source.html">libusb.h</a></li>
</ul>
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