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130 lines
3.2 KiB
130 lines
3.2 KiB
<HTML><HEAD><TITLE>Manpage of XBEE_GETPACKET</TITLE> |
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</HEAD><BODY> |
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<H1>XBEE_GETPACKET</H1> |
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Section: Linux Programmer's Manual (3)<BR>Updated: 2009-11-01<BR><A HREF="#index">Index</A> |
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<A HREF="../index.html">Return to Main Contents</A><HR> |
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<A NAME="lbAB"> </A> |
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<H2>NAME</H2> |
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xbee_getpacket |
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<A NAME="lbAC"> </A> |
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<H2>SYNOPSIS</H2> |
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<B>#include <<A HREF="file:/usr/include/xbee.h">xbee.h</A>></B> |
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<P> |
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<B>xbee_pkt *xbee_getpacket(xbee_con *</B><I>con</I><B>);</B> |
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<P> |
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<B>xbee_pkt *xbee_getpacketwait(xbee_con *</B><I>con</I><B>);</B> |
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<A NAME="lbAD"> </A> |
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<H2>DESCRIPTION</H2> |
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The |
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<B>xbee_getpacket</B>() |
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function will return the next avaliable packet for the provided connection. |
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It takes 1 argument. |
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<P> |
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The argument |
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<I>con</I> |
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points to a connection made previously with |
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<B>xbee_newcon</B>(). |
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<P> |
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The |
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<B>xbee_getpacketwait</B>() |
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function behaves the same, but will wait for an internally specified time for a packet to arrive (currently around 1 second). |
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<A NAME="lbAE"> </A> |
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<H2>RETURN VALUE</H2> |
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Upon successful return, this function returns the packet, having unlinked it from the internal list of packets. |
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You must keep hold of the packet until you are finished with it, and then you must |
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<B>free</B>() |
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it to prevent memory leaks. |
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<P> |
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If a packet was not avaliable for the provided connection, a |
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<B>NULL</B> |
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is returned. |
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<P> |
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If an error occured a |
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<B>NULL</B> |
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is also returned (though unlikely). |
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<P> |
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For more information on the structure of the packet, please see |
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<B><A HREF="../man3/xbee_pkt.3.html">xbee_pkt</A></B>(3) |
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<P> |
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For information on using callback functions with connections instead, please see |
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<B><A HREF="../man3/xbee_con.3.html">xbee_con</A></B>(3) |
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<A NAME="lbAF"> </A> |
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<H2>EXAMPLE</H2> |
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To recieve a packet from a previously made connection: |
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<PRE> |
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#include <<A HREF="file:/usr/include/xbee.h">xbee.h</A>> |
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xbee_pkt *pkt; |
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if ((pkt = xbee_getpacket(con)) != NULL) { |
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/* process packet... */ |
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free(pkt); |
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} |
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</PRE> |
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<A NAME="lbAG"> </A> |
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<H2>AUTHOR</H2> |
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Attie Grande <<A HREF="mailto:attie@attie.co.uk">attie@attie.co.uk</A>> |
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<A NAME="lbAH"> </A> |
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<H2>SEE ALSO</H2> |
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<B><A HREF="../man3/libxbee.3.html">libxbee</A></B>(3), |
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<B><A HREF="../man3/xbee_setup.3.html">xbee_setup</A></B>(3), |
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<B><A HREF="../man3/xbee_newcon.3.html">xbee_newcon</A></B>(3), |
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<B><A HREF="../man3/xbee_senddata.3.html">xbee_senddata</A></B>(3), |
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<B><A HREF="../man3/xbee_pkt.3.html">xbee_pkt</A></B>(3), |
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<B><A HREF="../man3/xbee_con.3.html">xbee_con</A></B>(3), |
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<B><A HREF="../man3/xbee_hasDigital.3.html">xbee_hasDigital</A></B>(3), |
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<B><A HREF="../man3/xbee_getDigital.3.html">xbee_getDigital</A></B>(3), |
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<B><A HREF="../man3/xbee_hasAnalog.3.html">xbee_hasAnalog</A></B>(3), |
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<B><A HREF="../man3/xbee_getAnalog.3.html">xbee_getAnalog</A></B>(3) |
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<P> |
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<HR> |
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<A NAME="index"> </A><H2>Index</H2> |
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<DL> |
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<DT><A HREF="#lbAB">NAME</A><DD> |
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<DT><A HREF="#lbAC">SYNOPSIS</A><DD> |
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<DT><A HREF="#lbAD">DESCRIPTION</A><DD> |
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<DT><A HREF="#lbAE">RETURN VALUE</A><DD> |
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<DT><A HREF="#lbAF">EXAMPLE</A><DD> |
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<DT><A HREF="#lbAG">AUTHOR</A><DD> |
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<DT><A HREF="#lbAH">SEE ALSO</A><DD> |
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</DL> |
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<HR> |
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This document was created by |
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<A HREF="http://localhost/cgi-bin/man/man2html">man2html</A>, |
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using the manual pages.<BR> |
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Time: 00:08:23 GMT, March 30, 2011 |
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</BODY> |
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</HTML>
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