etherlab/etherlab_ext.c
author Edouard Tisserant
Tue, 26 Oct 2021 11:41:03 +0200
changeset 3373 78add3f69e39
parent 2165 02a2b5dee5e3
permissions -rw-r--r--
merged
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/*
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Template C code used to produce target Ethercat C code.
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Copyright (C) 2011-2014: Laurent BESSARD, Edouard TISSERANT
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Distributed under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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See COPYING file for copyrights details.
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*/
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2086
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#include "iec_types_all.h"
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#define FREE 0
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#define ACQUIRED 1
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#define ANSWERED 2
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long SDOLock = FREE;
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extern long AtomicCompareExchange(long* atomicvar,long compared, long exchange);
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int AcquireSDOLock() {
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	return AtomicCompareExchange(&SDOLock, FREE, ACQUIRED) == FREE;
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}
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void SDOAnswered() {
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	AtomicCompareExchange(&SDOLock, ACQUIRED, ANSWERED);
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}
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int HasAnswer() {
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	return SDOLock == ANSWERED;
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}
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void ReleaseSDOLock() {
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	AtomicCompareExchange(&SDOLock, ANSWERED, FREE);
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}
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int __init_etherlab_ext()
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{
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    SDOLock = FREE;
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    return 0;
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}
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void __cleanup_etherlab_ext()
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{
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}
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void __retrieve_etherlab_ext()
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{
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}
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void __publish_etherlab_ext()
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{
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}