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134 lines
3.0 KiB
134 lines
3.0 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_hasdigital, xbee_getdigital |
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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>int xbee_hasdigital(xbee_pkt *</B><I>pkt</I><B>, int </B><I>sample</I><B>, int </B><I>input</I><B>);</B> |
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<P> |
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<B>int xbee_getdigital(xbee_pkt *</B><I>pkt</I><B>, int </B><I>sample</I><B>, int </B><I>input</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_hasdigital</B>() |
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function will check the packet for the presence of a given sample on the specified input. |
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<P> |
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The |
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<B>xbee_getdigital</B>() |
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function will read the packet and return the sample value for the specified input. |
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<P> |
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They both take 3 arguments, with the same purposes. |
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<P> |
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The argument |
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<I>pkt</I> |
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points to a packet that was previously retrieved with |
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<B>xbee_getpacket</B>() |
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<P> |
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The argument |
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<I>sample</I> |
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selects the sample within the packet to use. |
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<P> |
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The argument |
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<I>input</I> |
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specifies which input you are interested in testing. |
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<A NAME="lbAE"> </A> |
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<H2>RETURN VALUE</H2> |
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The |
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<B>xbee_hasdigital</B>() |
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function will return |
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<B>1</B> |
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if the provided packet has sample data for the specified input, otherwise |
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<B>0</B>. |
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<P> |
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The |
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<B>xbee_getdigital</B>() |
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function will return |
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<B>1</B> |
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if the provided packet has sample data for the specified input and the sample was HIGH. |
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A |
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<B>0</B> |
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will be returned if the sample was LOW, or the packet does not contain sample data. |
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<P> |
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<A NAME="lbAF"> </A> |
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<H2>EXAMPLE</H2> |
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To read sample data from 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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if (xbee_hasdigital(pkt,0,0)) { |
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printf("D0 read %d,xbee_getdigital(pkt,0)); |
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} else { |
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printf("No D0 data); |
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} |
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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_pkt.3.html">xbee_pkt</A></B>(3), |
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<B><A HREF="../man3/xbee_getpacket.3.html">xbee_getpacket</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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