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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.13"/>
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<title>libusb-1.0: Miscellaneous</title>
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<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">libusb-1.0
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.13 -->
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initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
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name="MSearchResults" id="MSearchResults">
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<div class="header">
<div class="summary">
<a href="#define-members">Macros</a> |
<a href="#enum-members">Enumerations</a> |
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">Miscellaneous</div> </div>
</div><!--header-->
<div class="contents">
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:gaa7d6035eb2692d455d27144560a0f68d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a></td></tr>
<tr class="separator:gaa7d6035eb2692d455d27144560a0f68d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaabe4bc36a83358685d36a6c853cbb4de"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#gaabe4bc36a83358685d36a6c853cbb4de">LIBUSB_API_VERSION</a>   0x01000108</td></tr>
<tr class="separator:gaabe4bc36a83358685d36a6c853cbb4de"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga22961bb8cb0d6a9b22c88079efb59b8b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga22961bb8cb0d6a9b22c88079efb59b8b">libusb_le16_to_cpu</a>   libusb_cpu_to_le16</td></tr>
<tr class="separator:ga22961bb8cb0d6a9b22c88079efb59b8b"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:ga5b5912057c2d7e23b3ed5aa0c20236df"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga5b5912057c2d7e23b3ed5aa0c20236df">libusb_standard_request</a> { <br />
  <a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa42f2eefbbd7a5c5cce68ca5989a02a7a">LIBUSB_REQUEST_GET_STATUS</a> = 0x00,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa0b0f3b3ac6e8ebca120bf3581c5505de">LIBUSB_REQUEST_CLEAR_FEATURE</a> = 0x01,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa6059966cdfccc4db0cccaab22a6d9a83">LIBUSB_REQUEST_SET_FEATURE</a> = 0x03,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa7c69aef99e548d128bc1f9e18c539c1d">LIBUSB_REQUEST_SET_ADDRESS</a> = 0x05,
<br />
  <a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa3ebb19fe897a2a36e90b2e8193b88b0f">LIBUSB_REQUEST_GET_DESCRIPTOR</a> = 0x06,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa40ad5a26219379bbbeab2137b21dcb74">LIBUSB_REQUEST_SET_DESCRIPTOR</a> = 0x07,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa7e33754fe6c088b94905c387155a8586">LIBUSB_REQUEST_GET_CONFIGURATION</a> = 0x08,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfaefcadf8a4b1f0d1dadd79764486b2cb3">LIBUSB_REQUEST_SET_CONFIGURATION</a> = 0x09,
<br />
  <a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa179b703deda249f6e48412bc2cf61d8c">LIBUSB_REQUEST_GET_INTERFACE</a> = 0x0a,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa72e910864721ebe3e5cb6a5b53de6061">LIBUSB_REQUEST_SET_INTERFACE</a> = 0x0b,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfab4244333798720a3664e59187819f2d5">LIBUSB_REQUEST_SYNCH_FRAME</a> = 0x0c,
<a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfa8fc0213fcc23566ec28e88bee216777b">LIBUSB_REQUEST_SET_SEL</a> = 0x30,
<br />
  <a class="el" href="group__libusb__misc.html#gga5b5912057c2d7e23b3ed5aa0c20236dfaa280efe17cdd0be55d528b9932142376">LIBUSB_SET_ISOCH_DELAY</a> = 0x31
<br />
}</td></tr>
<tr class="separator:ga5b5912057c2d7e23b3ed5aa0c20236df"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0b0933ae70744726cde11254c39fac91"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga0b0933ae70744726cde11254c39fac91">libusb_request_type</a> { <a class="el" href="group__libusb__misc.html#gga0b0933ae70744726cde11254c39fac91a20eca62c34d2d25be7e1776510184209">LIBUSB_REQUEST_TYPE_STANDARD</a> = (0x00 << 5),
<a class="el" href="group__libusb__misc.html#gga0b0933ae70744726cde11254c39fac91a43f45ae56bf339e3f984a4182fdd85f0">LIBUSB_REQUEST_TYPE_CLASS</a> = (0x01 << 5),
<a class="el" href="group__libusb__misc.html#gga0b0933ae70744726cde11254c39fac91a1585f40d2a73c752a5f60688612c1345">LIBUSB_REQUEST_TYPE_VENDOR</a> = (0x02 << 5),
<a class="el" href="group__libusb__misc.html#gga0b0933ae70744726cde11254c39fac91a8e2a1b00f9bcf05d3303c75c9e9cda69">LIBUSB_REQUEST_TYPE_RESERVED</a> = (0x03 << 5)
}</td></tr>
<tr class="separator:ga0b0933ae70744726cde11254c39fac91"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga20a4e8a729aa543fa742a5086596cbae"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga20a4e8a729aa543fa742a5086596cbae">libusb_request_recipient</a> { <a class="el" href="group__libusb__misc.html#gga20a4e8a729aa543fa742a5086596cbaeaf39ffde2a586d565a817bfd591f2dc33">LIBUSB_RECIPIENT_DEVICE</a> = 0x00,
<a class="el" href="group__libusb__misc.html#gga20a4e8a729aa543fa742a5086596cbaea9e5f9678cb9b301ccc07a247d350aadc">LIBUSB_RECIPIENT_INTERFACE</a> = 0x01,
<a class="el" href="group__libusb__misc.html#gga20a4e8a729aa543fa742a5086596cbaea6873e84c5a1ae0160891ebab16e5d93b">LIBUSB_RECIPIENT_ENDPOINT</a> = 0x02,
<a class="el" href="group__libusb__misc.html#gga20a4e8a729aa543fa742a5086596cbaeae6f863cf9e2122d2194916876e9477eb">LIBUSB_RECIPIENT_OTHER</a> = 0x03
}</td></tr>
<tr class="separator:ga20a4e8a729aa543fa742a5086596cbae"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab2323aa0f04bc22038e7e1740b2f29ef"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#gab2323aa0f04bc22038e7e1740b2f29ef">libusb_error</a> { <br />
  <a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa576d8d63f6e24b2e57cb2ca63b304f15">LIBUSB_SUCCESS</a> = 0,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa790feab8b45d8c323038f4d7d15eceec">LIBUSB_ERROR_IO</a> = -1,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa680e4bf39b66a36be3182be3ebf58062">LIBUSB_ERROR_INVALID_PARAM</a> = -2,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa131f3c2f6f2bb40bc6fb60ccb6f3152f">LIBUSB_ERROR_ACCESS</a> = -3,
<br />
  <a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efaf8d98f464314a8e202507a0e5c67336f">LIBUSB_ERROR_NO_DEVICE</a> = -4,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa28214194dc4399e51777408b2c27f03f">LIBUSB_ERROR_NOT_FOUND</a> = -5,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa34ede1140a8a16022f730ac80875ed3b">LIBUSB_ERROR_BUSY</a> = -6,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa9b000ac2e6dc4ac864c59579dd08c8bd">LIBUSB_ERROR_TIMEOUT</a> = -7,
<br />
  <a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efaf00ae4b8772fda64263ae6e4d6569af0">LIBUSB_ERROR_OVERFLOW</a> = -8,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa1406e98370900156484f5fe609270837">LIBUSB_ERROR_PIPE</a> = -9,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa39c9284a18fb3277696d84d65f50dbea">LIBUSB_ERROR_INTERRUPTED</a> = -10,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efaff885c8ef4522f22f6673059c7b9edec">LIBUSB_ERROR_NO_MEM</a> = -11,
<br />
  <a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa01b43115484f435627be755d5dc9509b">LIBUSB_ERROR_NOT_SUPPORTED</a> = -12,
<a class="el" href="group__libusb__misc.html#ggab2323aa0f04bc22038e7e1740b2f29efa9705eb232d1a5e249926d4e76599672e">LIBUSB_ERROR_OTHER</a> = -99
<br />
}</td></tr>
<tr class="separator:gab2323aa0f04bc22038e7e1740b2f29ef"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaab1b3fa0728c06fafbee897795889bd5"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#gaab1b3fa0728c06fafbee897795889bd5">libusb_capability</a> { <a class="el" href="group__libusb__misc.html#ggaab1b3fa0728c06fafbee897795889bd5a24b79436d4bd088d169f9d1edb4b9649">LIBUSB_CAP_HAS_CAPABILITY</a> = 0x0000U,
<a class="el" href="group__libusb__misc.html#ggaab1b3fa0728c06fafbee897795889bd5a8b1bbccc648a6677cb9030a6ba827438">LIBUSB_CAP_HAS_HOTPLUG</a> = 0x0001U,
<a class="el" href="group__libusb__misc.html#ggaab1b3fa0728c06fafbee897795889bd5aa74726ef0af0e42d2d56532f82e873a5">LIBUSB_CAP_HAS_HID_ACCESS</a> = 0x0100U,
<a class="el" href="group__libusb__misc.html#ggaab1b3fa0728c06fafbee897795889bd5ad15a06b1aede635004f08bdc0fe561cc">LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER</a> = 0x0101U
}</td></tr>
<tr class="separator:gaab1b3fa0728c06fafbee897795889bd5"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga567724921075e6cf93da31305e09c072"><td class="memItemLeft" align="right" valign="top">int API_EXPORTED </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga567724921075e6cf93da31305e09c072">libusb_has_capability</a> (uint32_t capability)</td></tr>
<tr class="separator:ga567724921075e6cf93da31305e09c072"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabb433b6d7958d377eeab646bbff3cb34"><td class="memItemLeft" align="right" valign="top">DEFAULT_VISIBILITY const char *<a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#gabb433b6d7958d377eeab646bbff3cb34">libusb_error_name</a> (int error_code)</td></tr>
<tr class="separator:gabb433b6d7958d377eeab646bbff3cb34"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga578e6270604c3e9ad887f7580c278244"><td class="memItemLeft" align="right" valign="top">DEFAULT_VISIBILITY const struct <a class="el" href="structlibusb__version.html">libusb_version</a> *<a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga578e6270604c3e9ad887f7580c278244">libusb_get_version</a> (<a class="el" href="group__libusb__asyncio.html#ga8ca3594d1761da8da91be2851f4e8f21">void</a>)</td></tr>
<tr class="separator:ga578e6270604c3e9ad887f7580c278244"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabd20f7cb1b9d31f6e40ece7eb7da6093"><td class="memItemLeft" align="right" valign="top">int API_EXPORTED </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#gabd20f7cb1b9d31f6e40ece7eb7da6093">libusb_setlocale</a> (const char *locale)</td></tr>
<tr class="separator:gabd20f7cb1b9d31f6e40ece7eb7da6093"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga93c1402e591351aff165e7857a514311"><td class="memItemLeft" align="right" valign="top">DEFAULT_VISIBILITY const char *<a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__libusb__misc.html#ga93c1402e591351aff165e7857a514311">libusb_strerror</a> (int errcode)</td></tr>
<tr class="separator:ga93c1402e591351aff165e7857a514311"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="gaabe4bc36a83358685d36a6c853cbb4de"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaabe4bc36a83358685d36a6c853cbb4de">◆ </a></span>LIBUSB_API_VERSION</h2>
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<td class="memname">#define LIBUSB_API_VERSION   0x01000108</td>
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<p>libusb's API version.</p>
<p>Since version 1.0.13, to help with feature detection, libusb defines a LIBUSB_API_VERSION macro that gets increased every time there is a significant change to the API, such as the introduction of a new call, the definition of a new macro/enum member, or any other element that libusb applications may want to detect at compilation time.</p>
<p>The macro is typically used in an application as follows: </p><div class="fragment"><div class="line"><span class="preprocessor">#if defined(LIBUSB_API_VERSION) && (LIBUSB_API_VERSION >= 0x01001234)</span></div><div class="line"><span class="comment">// Use one of the newer features from the libusb API</span></div><div class="line"><span class="preprocessor">#endif</span></div></div><!-- fragment --><p>Internally, LIBUSB_API_VERSION is defined as follows: (libusb major << 24) | (libusb minor << 16) | (16 bit incremental) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gaa7d6035eb2692d455d27144560a0f68d">◆ </a></span>LIBUSB_CALL</h2>
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<td class="memname">#define LIBUSB_CALL</td>
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<p>libusb's Windows calling convention.</p>
<p>Under Windows, the selection of available compilers and configurations means that, unlike other platforms, there is not <em>one true calling convention</em> (calling convention: the manner in which parameters are passed to functions in the generated assembly code).</p>
<p>Matching the Windows API itself, libusb uses the WINAPI convention (which translates to the <code>stdcall</code> convention) and guarantees that the library is compiled in this way. The public header file also includes appropriate annotations so that your own software will use the right convention, even if another convention is being used by default within your codebase.</p>
<p>The one consideration that you must apply in your software is to mark all functions which you use as libusb callbacks with this LIBUSB_CALL annotation, so that they too get compiled for the correct calling convention.</p>
<p>On non-Windows operating systems, this macro is defined as nothing. This means that you can apply it to your code without worrying about cross-platform compatibility. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga22961bb8cb0d6a9b22c88079efb59b8b">◆ </a></span>libusb_le16_to_cpu</h2>
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<td class="memname">#define libusb_le16_to_cpu   libusb_cpu_to_le16</td>
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<p>Convert a 16-bit value from little-endian to host-endian format. On little endian systems, this function does nothing. On big endian systems, the bytes are swapped. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">x</td><td>the little-endian value to convert </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the value in host-endian byte order </dd></dl>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gaab1b3fa0728c06fafbee897795889bd5">◆ </a></span>libusb_capability</h2>
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<td class="memname">enum <a class="el" href="group__libusb__misc.html#gaab1b3fa0728c06fafbee897795889bd5">libusb_capability</a></td>
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<p>Capabilities supported by an instance of libusb on the current running platform. Test if the loaded library supports a given capability by calling <a class="el" href="group__libusb__misc.html#ga567724921075e6cf93da31305e09c072">libusb_has_capability()</a>. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="ggaab1b3fa0728c06fafbee897795889bd5a24b79436d4bd088d169f9d1edb4b9649"></a>LIBUSB_CAP_HAS_CAPABILITY </td><td class="fielddoc"><p>The <a class="el" href="group__libusb__misc.html#ga567724921075e6cf93da31305e09c072">libusb_has_capability()</a> API is available. </p>
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<tr><td class="fieldname"><a id="ggaab1b3fa0728c06fafbee897795889bd5a8b1bbccc648a6677cb9030a6ba827438"></a>LIBUSB_CAP_HAS_HOTPLUG </td><td class="fielddoc"><p>Hotplug support is available on this platform. </p>
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<tr><td class="fieldname"><a id="ggaab1b3fa0728c06fafbee897795889bd5aa74726ef0af0e42d2d56532f82e873a5"></a>LIBUSB_CAP_HAS_HID_ACCESS </td><td class="fielddoc"><p>The library can access HID devices without requiring user intervention. Note that before being able to actually access an HID device, you may still have to call additional libusb functions such as <a class="el" href="group__libusb__dev.html#ga514103328b9278600a59a1d9a911b3c9">libusb_detach_kernel_driver()</a>. </p>
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<tr><td class="fieldname"><a id="ggaab1b3fa0728c06fafbee897795889bd5ad15a06b1aede635004f08bdc0fe561cc"></a>LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER </td><td class="fielddoc"><p>The library supports detaching of the default USB driver, using <a class="el" href="group__libusb__dev.html#ga514103328b9278600a59a1d9a911b3c9">libusb_detach_kernel_driver()</a>, if one is set by the OS kernel </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gab2323aa0f04bc22038e7e1740b2f29ef">◆ </a></span>libusb_error</h2>
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<td class="memname">enum <a class="el" href="group__libusb__misc.html#gab2323aa0f04bc22038e7e1740b2f29ef">libusb_error</a></td>
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<p>Error codes. Most libusb functions return 0 on success or one of these codes on failure. You can call <a class="el" href="group__libusb__misc.html#gabb433b6d7958d377eeab646bbff3cb34">libusb_error_name()</a> to retrieve a string representation of an error code or <a class="el" href="group__libusb__misc.html#ga93c1402e591351aff165e7857a514311">libusb_strerror()</a> to get an end-user suitable description of an error code. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa576d8d63f6e24b2e57cb2ca63b304f15"></a>LIBUSB_SUCCESS </td><td class="fielddoc"><p>Success (no error) </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa680e4bf39b66a36be3182be3ebf58062"></a>LIBUSB_ERROR_INVALID_PARAM </td><td class="fielddoc"><p>Invalid parameter </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa131f3c2f6f2bb40bc6fb60ccb6f3152f"></a>LIBUSB_ERROR_ACCESS </td><td class="fielddoc"><p>Access denied (insufficient permissions) </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efaf8d98f464314a8e202507a0e5c67336f"></a>LIBUSB_ERROR_NO_DEVICE </td><td class="fielddoc"><p>No such device (it may have been disconnected) </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa28214194dc4399e51777408b2c27f03f"></a>LIBUSB_ERROR_NOT_FOUND </td><td class="fielddoc"><p>Entity not found </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa34ede1140a8a16022f730ac80875ed3b"></a>LIBUSB_ERROR_BUSY </td><td class="fielddoc"><p>Resource busy </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa9b000ac2e6dc4ac864c59579dd08c8bd"></a>LIBUSB_ERROR_TIMEOUT </td><td class="fielddoc"><p>Operation timed out </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efaf00ae4b8772fda64263ae6e4d6569af0"></a>LIBUSB_ERROR_OVERFLOW </td><td class="fielddoc"><p>Overflow </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa1406e98370900156484f5fe609270837"></a>LIBUSB_ERROR_PIPE </td><td class="fielddoc"><p>Pipe error </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa39c9284a18fb3277696d84d65f50dbea"></a>LIBUSB_ERROR_INTERRUPTED </td><td class="fielddoc"><p>System call interrupted (perhaps due to signal) </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efaff885c8ef4522f22f6673059c7b9edec"></a>LIBUSB_ERROR_NO_MEM </td><td class="fielddoc"><p>Insufficient memory </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa01b43115484f435627be755d5dc9509b"></a>LIBUSB_ERROR_NOT_SUPPORTED </td><td class="fielddoc"><p>Operation not supported or unimplemented on this platform </p>
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<tr><td class="fieldname"><a id="ggab2323aa0f04bc22038e7e1740b2f29efa9705eb232d1a5e249926d4e76599672e"></a>LIBUSB_ERROR_OTHER </td><td class="fielddoc"><p>Other error </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga20a4e8a729aa543fa742a5086596cbae">◆ </a></span>libusb_request_recipient</h2>
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<td class="memname">enum <a class="el" href="group__libusb__misc.html#ga20a4e8a729aa543fa742a5086596cbae">libusb_request_recipient</a></td>
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<p>Recipient bits of the <a class="el" href="structlibusb__control__setup.html#a39b148c231d675492ccd2383196926bf">bmRequestType</a> field in control transfers. Values 4 through 31 are reserved. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga20a4e8a729aa543fa742a5086596cbaeaf39ffde2a586d565a817bfd591f2dc33"></a>LIBUSB_RECIPIENT_DEVICE </td><td class="fielddoc"><p>Device </p>
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<tr><td class="fieldname"><a id="gga20a4e8a729aa543fa742a5086596cbaea9e5f9678cb9b301ccc07a247d350aadc"></a>LIBUSB_RECIPIENT_INTERFACE </td><td class="fielddoc"><p>Interface </p>
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<tr><td class="fieldname"><a id="gga20a4e8a729aa543fa742a5086596cbaea6873e84c5a1ae0160891ebab16e5d93b"></a>LIBUSB_RECIPIENT_ENDPOINT </td><td class="fielddoc"><p>Endpoint </p>
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<tr><td class="fieldname"><a id="gga20a4e8a729aa543fa742a5086596cbaeae6f863cf9e2122d2194916876e9477eb"></a>LIBUSB_RECIPIENT_OTHER </td><td class="fielddoc"><p>Other </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0b0933ae70744726cde11254c39fac91">◆ </a></span>libusb_request_type</h2>
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<td class="memname">enum <a class="el" href="group__libusb__misc.html#ga0b0933ae70744726cde11254c39fac91">libusb_request_type</a></td>
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<p>Request type bits of the <a class="el" href="structlibusb__control__setup.html#a39b148c231d675492ccd2383196926bf">bmRequestType</a> field in control transfers. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga0b0933ae70744726cde11254c39fac91a20eca62c34d2d25be7e1776510184209"></a>LIBUSB_REQUEST_TYPE_STANDARD </td><td class="fielddoc"><p>Standard </p>
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<tr><td class="fieldname"><a id="gga0b0933ae70744726cde11254c39fac91a43f45ae56bf339e3f984a4182fdd85f0"></a>LIBUSB_REQUEST_TYPE_CLASS </td><td class="fielddoc"><p>Class </p>
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<tr><td class="fieldname"><a id="gga0b0933ae70744726cde11254c39fac91a1585f40d2a73c752a5f60688612c1345"></a>LIBUSB_REQUEST_TYPE_VENDOR </td><td class="fielddoc"><p>Vendor </p>
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<tr><td class="fieldname"><a id="gga0b0933ae70744726cde11254c39fac91a8e2a1b00f9bcf05d3303c75c9e9cda69"></a>LIBUSB_REQUEST_TYPE_RESERVED </td><td class="fielddoc"><p>Reserved </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5b5912057c2d7e23b3ed5aa0c20236df">◆ </a></span>libusb_standard_request</h2>
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<td class="memname">enum <a class="el" href="group__libusb__misc.html#ga5b5912057c2d7e23b3ed5aa0c20236df">libusb_standard_request</a></td>
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<p>Standard requests, as defined in table 9-5 of the USB 3.0 specifications </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa42f2eefbbd7a5c5cce68ca5989a02a7a"></a>LIBUSB_REQUEST_GET_STATUS </td><td class="fielddoc"><p>Request status of the specific recipient </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa0b0f3b3ac6e8ebca120bf3581c5505de"></a>LIBUSB_REQUEST_CLEAR_FEATURE </td><td class="fielddoc"><p>Clear or disable a specific feature </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa6059966cdfccc4db0cccaab22a6d9a83"></a>LIBUSB_REQUEST_SET_FEATURE </td><td class="fielddoc"><p>Set or enable a specific feature </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa7c69aef99e548d128bc1f9e18c539c1d"></a>LIBUSB_REQUEST_SET_ADDRESS </td><td class="fielddoc"><p>Set device address for all future accesses </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa3ebb19fe897a2a36e90b2e8193b88b0f"></a>LIBUSB_REQUEST_GET_DESCRIPTOR </td><td class="fielddoc"><p>Get the specified descriptor </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa40ad5a26219379bbbeab2137b21dcb74"></a>LIBUSB_REQUEST_SET_DESCRIPTOR </td><td class="fielddoc"><p>Used to update existing descriptors or add new descriptors </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa7e33754fe6c088b94905c387155a8586"></a>LIBUSB_REQUEST_GET_CONFIGURATION </td><td class="fielddoc"><p>Get the current device configuration value </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfaefcadf8a4b1f0d1dadd79764486b2cb3"></a>LIBUSB_REQUEST_SET_CONFIGURATION </td><td class="fielddoc"><p>Set device configuration </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa179b703deda249f6e48412bc2cf61d8c"></a>LIBUSB_REQUEST_GET_INTERFACE </td><td class="fielddoc"><p>Return the selected alternate setting for the specified interface </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa72e910864721ebe3e5cb6a5b53de6061"></a>LIBUSB_REQUEST_SET_INTERFACE </td><td class="fielddoc"><p>Select an alternate interface for the specified interface </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfab4244333798720a3664e59187819f2d5"></a>LIBUSB_REQUEST_SYNCH_FRAME </td><td class="fielddoc"><p>Set then report an endpoint's synchronization frame </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfa8fc0213fcc23566ec28e88bee216777b"></a>LIBUSB_REQUEST_SET_SEL </td><td class="fielddoc"><p>Sets both the U1 and U2 Exit Latency </p>
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<tr><td class="fieldname"><a id="gga5b5912057c2d7e23b3ed5aa0c20236dfaa280efe17cdd0be55d528b9932142376"></a>LIBUSB_SET_ISOCH_DELAY </td><td class="fielddoc"><p>Delay from the time a host transmits a packet to the time it is received by the device. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gabb433b6d7958d377eeab646bbff3cb34">◆ </a></span>libusb_error_name()</h2>
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<td class="memname">DEFAULT_VISIBILITY const char* <a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a> libusb_error_name </td>
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<p>Returns a constant NULL-terminated string with the ASCII name of a libusb error or transfer status code. The caller must not free() the returned string.</p>
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<dl class="section return"><dt>Returns</dt><dd>The error name, or the string <b>UNKNOWN</b> if the value of error_code is not a known error / status code. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga578e6270604c3e9ad887f7580c278244">◆ </a></span>libusb_get_version()</h2>
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<td class="memname">DEFAULT_VISIBILITY const struct <a class="el" href="structlibusb__version.html">libusb_version</a>* <a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a> libusb_get_version </td>
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<p>Returns a pointer to const struct <a class="el" href="structlibusb__version.html">libusb_version</a> with the version (major, minor, micro, nano and rc) of the running library. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga567724921075e6cf93da31305e09c072">◆ </a></span>libusb_has_capability()</h2>
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<td class="memname">int API_EXPORTED libusb_has_capability </td>
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<p>Check at runtime if the loaded library has a given capability. This call should be performed after <a class="el" href="group__libusb__lib.html#ga297006e15c446cee88ab09b02f1bbe0c">libusb_init()</a>, to ensure the backend has updated its capability set.</p>
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<dl class="section return"><dt>Returns</dt><dd>nonzero if the running library has the capability, 0 otherwise </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#gabd20f7cb1b9d31f6e40ece7eb7da6093">◆ </a></span>libusb_setlocale()</h2>
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<td class="memname">int API_EXPORTED libusb_setlocale </td>
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<p>Set the language, and only the language, not the encoding! used for translatable libusb messages.</p>
<p>This takes a locale string in the default setlocale format: lang[-region] or lang[_country_region][.codeset]. Only the lang part of the string is used, and only 2 letter ISO 639-1 codes are accepted for it, such as "de". The optional region, country_region or codeset parts are ignored. This means that functions which return translatable strings will NOT honor the specified encoding. All strings returned are encoded as UTF-8 strings.</p>
<p>If <a class="el" href="group__libusb__misc.html#gabd20f7cb1b9d31f6e40ece7eb7da6093">libusb_setlocale()</a> is not called, all messages will be in English.</p>
<p>The following functions return translatable strings: <a class="el" href="group__libusb__misc.html#ga93c1402e591351aff165e7857a514311">libusb_strerror()</a>. Note that the libusb log messages controlled through <a class="el" href="group__libusb__lib.html#ga13db8bfeff29df24ddf88b8823bd9b8a">libusb_set_debug()</a> are not translated, they are always in English.</p>
<p>For POSIX UTF-8 environments if you want libusb to follow the standard locale settings, call libusb_setlocale(setlocale(LC_MESSAGES, NULL)), after your app has done its locale setup.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">locale</td><td>locale-string in the form of lang[_country_region][.codeset] or lang[-region], where lang is a 2 letter ISO 639-1 code </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>LIBUSB_SUCCESS on success </dd>
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LIBUSB_ERROR_INVALID_PARAM if the locale doesn't meet the requirements </dd>
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LIBUSB_ERROR_NOT_FOUND if the requested language is not supported </dd>
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a LIBUSB_ERROR code on other errors </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga93c1402e591351aff165e7857a514311">◆ </a></span>libusb_strerror()</h2>
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<td class="memname">DEFAULT_VISIBILITY const char* <a class="el" href="group__libusb__misc.html#gaa7d6035eb2692d455d27144560a0f68d">LIBUSB_CALL</a> libusb_strerror </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>errcode</em></td><td>)</td>
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<p>Returns a constant string with a short description of the given error code, this description is intended for displaying to the end user and will be in the language set by <a class="el" href="group__libusb__misc.html#gabd20f7cb1b9d31f6e40ece7eb7da6093">libusb_setlocale()</a>.</p>
<p>The returned string is encoded in UTF-8.</p>
<p>The messages always start with a capital letter and end without any dot. The caller must not free() the returned string.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">errcode</td><td>the error code whose description is desired </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>a short description of the error code in UTF-8 encoding </dd></dl>
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