doc/manual/en/html/node19.html
author etisserant
Mon, 02 Jul 2007 18:22:58 +0200
changeset 236 905677ed00f3
parent 215 f49e5a6b7804
permissions -rw-r--r--
Full preliminary implementation of TPDO transmit type:
- SYNC (N) (1-240)
- RTR only + SYNC (252)
- RTR only (253)
- EVENT, with timer and inhibit time (254 and 255)

User app have to call sendPDOevent(d) to eventually signal mapped data changes.
Callbacks added to 0x140N, TPDO comm parameters for on the fly timers values change.
TestMasterSlave updated.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
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original version by:  Nikos Drakos, CBLU, University of Leeds
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* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
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* with significant contributions from:
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  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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<HTML>
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<HEAD>
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<TITLE>CanFestival CAN interfaces</TITLE>
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<B> Next:</B> <A NAME="tex2html385"
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  HREF="node20.html">CanFestival events scheduling</A>
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<B> Up:</B> <A NAME="tex2html381"
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  HREF="node16.html">Understanding Canfestival</A>
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  HREF="node18.html">Implement CanFestival in your</A>
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  HREF="node1.html">Contents</A></B> 
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<BR>
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<H2><A NAME="SECTION00053000000000000000">
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CanFestival CAN interfaces</A>
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</H2>
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Because most CAN controllers and drivers implement FIFOs, CanFestival
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consider sending message as a non bloking operation.
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<P>
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In order to prevent reentrent calls to the stack, messages reception is
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implemented differently on &#181;C and OS.:
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<P>
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<OL>
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<LI>&#181;C must provide interuption masking for timer and can
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receive IT
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<BR>
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<IMG
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</DIV>
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</LI>
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<LI>OS must provide a receive thread, a timer thread and a mutex. CAN
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reception is a bloking operation.
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</DIV>
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</LI>
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</OL>
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<BR><HR>
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<ADDRESS>
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epimerde
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2007-06-08
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