author | Edouard Tisserant |
Tue, 02 Mar 2021 17:30:13 +0100 | |
branch | svghmi |
changeset 3175 | b2ba6eeb61ec |
parent 1463 | de311ffe3961 |
permissions | -rw-r--r-- |
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<?xml version='1.0' encoding='utf-8'?> |
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<CFile xmlns:xhtml="http://www.w3.org/1999/xhtml"> |
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<includes> |
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<xhtml:p><![CDATA[ |
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]]></xhtml:p> |
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</includes> |
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<variables> |
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<variable name="TestInput" type="SINT" initial="0"/> |
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<variable name="TestOutput" type="SINT"/> |
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</variables> |
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<globals> |
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<xhtml:p><![CDATA[ |
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volatile long Lock=0; |
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volatile char PtoC=1,CtoP=2; |
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extern long AtomicCompareExchange(long*,long, long); |
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Changed runtime's global PLCID to PLC_ID, working around redefinition in windoze' headers.
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extern char *PLC_ID; |
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int Simple_C_Call(int val){ |
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return val+1; |
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} |
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|
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Introduced FBID in tests/python example. Fixed type error leading to segfault
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int Python_to_C_Call(char toC, char *fromC){ |
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/* Code called by python should never touch to |
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variables modified by PLC thread directly |
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AtomicCompareExchange comes from |
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beremiz' runtime implementation */ |
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|
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int res = 0; |
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if(!AtomicCompareExchange((long*)&Lock, 0, 1)){ |
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PtoC=toC; |
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*fromC=CtoP; |
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AtomicCompareExchange((long*)&Lock, 1, 0); |
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res=1; |
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} |
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printf("C code called by Python: toC %d fromC %d\n",toC,*fromC); |
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printf("PLC_ID id %s\n",PLC_ID); |
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return res; |
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} |
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|
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bb59865db6e6
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int PLC_C_Call(char fromPLC, char *toPLC){ |
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/* PLC also have to be realy carefull not to |
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conflict with asynchronous python access */ |
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if(!AtomicCompareExchange((long*)&Lock, 0, 1)){ |
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CtoP = fromPLC; |
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*toPLC = PtoC; |
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AtomicCompareExchange((long*)&Lock, 1, 0); |
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return 1; |
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} |
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return 0; |
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} |
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]]></xhtml:p> |
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</globals> |
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<initFunction> |
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<xhtml:p><![CDATA[ |
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]]></xhtml:p> |
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</initFunction> |
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<cleanUpFunction> |
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<xhtml:p><![CDATA[ |
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]]></xhtml:p> |
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</cleanUpFunction> |
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<retrieveFunction> |
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<xhtml:p><![CDATA[ |
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]]></xhtml:p> |
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</retrieveFunction> |
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<publishFunction> |
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<xhtml:p><![CDATA[ |
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if(!AtomicCompareExchange((long*)&Lock, 0, 1)){ |
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TestInput = CtoP + PtoC + TestOutput; |
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AtomicCompareExchange((long*)&Lock, 1, 0); |
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} |
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]]></xhtml:p> |
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</publishFunction> |
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</CFile> |