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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Functions</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"/><LINK
REL="HOME"
TITLE="OpenUSB Developers Guide"
HREF="index.html"/><LINK
REL="PREVIOUS"
TITLE="Data Types"
HREF="api-types.html"/><LINK
REL="NEXT"
TITLE="Core"
HREF="ref.core.html"/><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="/base.css"/></HEAD
><BODY
CLASS="part"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>OpenUSB Developers Guide</TH
></TR
><TR
><TD
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><A
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ACCESSKEY="P"
>Prev</A
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><TD
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></TD
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><A
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>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"/></DIV
><DIV
CLASS="PART"
><A
NAME="functions"
></A
><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>III. Functions</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>6. <A
HREF="ref.core.html"
>Core</A
></DT
><DD
><DL
><DT
><A
HREF="function.openusbinit.html"
><CODE
CLASS="function"
>openusb_init, openusb_fini</CODE
></A
>&nbsp;--&nbsp;Initialize or destroy a libopenusb instance</DT
><DT
><A
HREF="function.openusbsetdebug.html"
><CODE
CLASS="function"
>openusb_set_debug</CODE
></A
>&nbsp;--&nbsp;Set debug information</DT
><DT
><A
HREF="function.openusbseteventcallback.html"
><CODE
CLASS="function"
>openusb_set_event_callback, openusb_coldplug_callbacks_done</CODE
></A
>&nbsp;--&nbsp;Set event callbacks or Waiting for coldplug events completion</DT
><DT
><A
HREF="function.openusbsetdefaulttimeout.html"
><CODE
CLASS="function"
>openusb_set_default_timeout</CODE
></A
>&nbsp;--&nbsp;Set default timeout for USB transfer</DT
></DL
></DD
><DT
>7. <A
HREF="ref.deviceops.html"
>Bus and Device Operations</A
></DT
><DD
><DL
><DT
><A
HREF="function.openusbgetbusidlist.html"
><CODE
CLASS="function"
>openusb_get_busid_list, openusb_free_busid_list</CODE
></A
>&nbsp;--&nbsp;Return all busids in the system, Free returned busids</DT
><DT
><A
HREF="function.openusbgetdevidsbybus.html"
><CODE
CLASS="function"
>openusb_get_devids_by_bus, openusb_get_devids_by_vendor,
	openusb_get_devids_by_class, openusb_free_devid_list</CODE
></A
>&nbsp;--&nbsp;Return all devids matching a pattern, Free returned devids</DT
><DT
><A
HREF="function.openusbgetdevicedata.html"
><CODE
CLASS="function"
>openusb_get_device_data,openusb_free_device_data </CODE
></A
>&nbsp;--&nbsp;Get a device's data, Free the device data</DT
><DT
><A
HREF="function.openusbopendevice.html"
><CODE
CLASS="function"
>openusb_open_device,openusb_close_device</CODE
></A
>&nbsp;--&nbsp;Open/Close a device</DT
><DT
><A
HREF="function.openusbgetdevid.html"
><CODE
CLASS="function"
>openusb_get_devid</CODE
></A
>&nbsp;--&nbsp;Extract device ID from a device handle</DT
><DT
><A
HREF="function.openusbgetlibhandle.html"
><CODE
CLASS="function"
>openusb_get_lib_handle</CODE
></A
>&nbsp;--&nbsp;Extract openusb handle from a device handle</DT
><DT
><A
HREF="function.openusbgetmaxxfersize.html"
><CODE
CLASS="function"
>openusb_get_max_xfer_size</CODE
></A
>&nbsp;--&nbsp;Get the maximum data transfer size per request based on the bus
    and type
    </DT
><DT
><A
HREF="function.openusbgetconfiguration.html"
><CODE
CLASS="function"
>openusb_get_configuration, openusb_set_configuration</CODE
></A
>&nbsp;--&nbsp;Get the current bConfigurationValue of a device,
    Set a device's bConfigurationValue</DT
><DT
><A
HREF="function.openusbclaiminterface.html"
><CODE
CLASS="function"
>openusb_claim_interface, openusb_release_interface,
    openusb_is_interface_claimed</CODE
></A
>&nbsp;--&nbsp;Claim interface exclusively, Release an interface,
    Check if an interface has been claimed</DT
><DT
><A
HREF="function.openusbgetaltsetting.html"
><CODE
CLASS="function"
>openusb_get_altsetting,openusb_set_altsetting</CODE
></A
>&nbsp;--&nbsp;Get alternate setting number, Set alternate setting</DT
><DT
><A
HREF="function.openusbreset.html"
><CODE
CLASS="function"
>openusb_reset</CODE
></A
>&nbsp;--&nbsp;Reset device</DT
></DL
></DD
><DT
>8. <A
HREF="ref.parsers.html"
>Device Descriptor Parsers</A
></DT
><DD
><DL
><DT
><A
HREF="function.openusbgetrawdesc.html"
><CODE
CLASS="function"
>openusb_get_raw_desc, openusb_free_raw_desc, openusb_parse_device_desc,
    openusb_parse_config_desc, openusb_parse_interface_desc, openusb_parse_endpoint_desc
    </CODE
></A
>&nbsp;--&nbsp;Get/Free raw device descriptors; Get cooked Device, Configuration, Interface,
    Endpoint descriptors  </DT
><DT
><A
HREF="function.openusbparsedata.html"
><CODE
CLASS="function"
>openusb_parse_data</CODE
></A
>&nbsp;--&nbsp;Unpack arbitrary little endian raw data</DT
></DL
></DD
><DT
>9. <A
HREF="ref.transfer.html"
>USB Data Transfer</A
></DT
><DD
><DL
><DT
><A
HREF="function.openusbxferwait.html"
><CODE
CLASS="function"
>openusb_xfer_wait, openusb_xfer_aio</CODE
></A
>&nbsp;--&nbsp;Issue synchronous I/O request, Issue asynchronous I/O request </DT
><DT
><A
HREF="function.openusbctrlxfer.html"
><CODE
CLASS="function"
>openusb_ctrl_xfer, openusb_intr_xfer, openusb_bulk_xfer, openusb_isoc_xfer</CODE
></A
>&nbsp;--&nbsp;Issue synchronous Control, Interrupt, Bulk, Isochronous request </DT
><DT
><A
HREF="function.openusbabort.html"
><CODE
CLASS="function"
>openusb_abort</CODE
></A
>&nbsp;--&nbsp;Abort previous I/O request</DT
><DT
><A
HREF="function.openusbwait.html"
><CODE
CLASS="function"
>openusb_wait, openusb_poll</CODE
></A
>&nbsp;--&nbsp;Wait for I/O request completion, Poll completion status of I/O request</DT
><DT
><A
HREF="function.openusbstart.html"
><CODE
CLASS="function"
>openusb_start, openusb_stop</CODE
></A
>&nbsp;--&nbsp; Start multi-xfer mode I/O; Stop multi-xfer mode I/O</DT
></DL
></DD
><DT
>10. <A
HREF="ref.helper.html"
>Helper Utilities</A
></DT
><DD
><DL
><DT
><A
HREF="function.openusbstrerror.html"
><CODE
CLASS="function"
>openusb_strerror</CODE
></A
>&nbsp;--&nbsp;Return english text corresponding to an error code</DT
><DT
><A
HREF="function.openusbcputole.html"
><CODE
CLASS="function"
>openusb_cpu_to_le16,openusb_cpu_to_le32</CODE
></A
>&nbsp;--&nbsp;Convert data from CPU endianess to Little Endian</DT
><DT
><A
HREF="function.openusbletocpu.html"
><CODE
CLASS="function"
>openusb_le16_to_cpu,openusb_le32_to_cpu</CODE
></A
>&nbsp;--&nbsp;Convert data from little endian to CPU byte order.</DT
></DL
></DD
></DL
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