Python Safe Globals now have more reliable triggering of OnChange call. Added "Onchange" object to accessible runtime variables that let user python code see count of changes and first and last values.
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<xhtml:p><![CDATA[This part of the example test that, despite of 2T period clock stimulating TRIG pin of pyth_eval blocks, blocks keep executing one after the other, in respect of execution order.]]></xhtml:p>
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<xhtml:p><![CDATA[You will be ready to use beremiz with C and Python when you will understand why "FromInput" is equal to 75.
Happy hacking! ]]></xhtml:p>
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<xhtml:p><![CDATA[Sleep here is bad. It blocks other py_eval instances. Whith a wxGlade GUI, GUI freeze for a second.]]></xhtml:p>
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<xhtml:p><![CDATA[Prints FBID to stdout of PLC runtime. FBID is a unique reference to py_eval instance.]]></xhtml:p>
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<xhtml:p><![CDATA[Simple_C_Call is declared in C_File "1.x:c_code". See python ctypes manual for details on typing.]]></xhtml:p>
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<xhtml:p><![CDATA[Fast clock, at least faster that sleep(1). See what happens when python takes time to answer : PLC continues.]]></xhtml:p>
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<position x="125" y="1790"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="195" y="31"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<outVariable localId="40" height="30" width="82" executionOrderId="0" negated="false">
<position x="580" y="1849"/>
<connectionPointIn>
<relPosition x="0" y="16"/>
<connection refLocalId="38" formalParameter="OUT">
<position x="580" y="1865"/>
<position x="460" y="1865"/>
</connection>
</connectionPointIn>
<expression>Test_Date</expression>
</outVariable>
<outVariable localId="42" height="30" width="98" executionOrderId="0" negated="false">
<position x="465" y="1944"/>
<connectionPointIn>
<relPosition x="0" y="16"/>
<connection refLocalId="46" formalParameter="OUT">
<position x="465" y="1960"/>
<position x="395" y="1960"/>
</connection>
</connectionPointIn>
<expression>Test_String</expression>
</outVariable>
<outVariable localId="43" height="30" width="82" executionOrderId="0" negated="false">
<position x="465" y="2014"/>
<connectionPointIn>
<relPosition x="0" y="16"/>
<connection refLocalId="44" formalParameter="OUT">
<position x="465" y="2030"/>
<position x="400" y="2030"/>
</connection>
</connectionPointIn>
<expression>Test_Bool</expression>
</outVariable>
<block localId="44" width="135" height="45" typeName="STRING_TO_BOOL" executionOrderId="0">
<position x="265" y="1999"/>
<inputVariables>
<variable formalParameter="IN">
<connectionPointIn>
<relPosition x="0" y="31"/>
<connection refLocalId="45">
<position x="265" y="2030"/>
<position x="115" y="2030"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="135" y="31"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inVariable localId="45" height="30" width="58" executionOrderId="0" negated="false">
<position x="60" y="2014"/>
<connectionPointOut>
<relPosition x="58" y="16"/>
</connectionPointOut>
<expression>'True'</expression>
</inVariable>
<block localId="46" width="130" height="45" typeName="INT_TO_STRING" executionOrderId="0">
<position x="265" y="1929"/>
<inputVariables>
<variable formalParameter="IN">
<connectionPointIn>
<relPosition x="0" y="31"/>
<connection refLocalId="58">
<position x="265" y="1960"/>
<position x="205" y="1960"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="130" y="31"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inVariable localId="50" height="30" width="106" executionOrderId="0" negated="false">
<position x="75" y="2275"/>
<connectionPointOut>
<relPosition x="106" y="15"/>
</connectionPointOut>
<expression>Global_RS.Q1</expression>
</inVariable>
<block localId="51" width="70" height="85" typeName="AND" executionOrderId="0">
<position x="240" y="2255"/>
<inputVariables>
<variable formalParameter="IN1" negated="true">
<connectionPointIn>
<relPosition x="0" y="35"/>
<connection refLocalId="50">
<position x="240" y="2290"/>
<position x="180" y="2290"/>
</connection>
</connectionPointIn>
</variable>
<variable formalParameter="IN2">
<connectionPointIn>
<relPosition x="0" y="70"/>
<connection refLocalId="52">
<position x="240" y="2325"/>
<position x="180" y="2325"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="70" y="35"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inVariable localId="52" height="30" width="105" executionOrderId="0" negated="false">
<position x="75" y="2310"/>
<connectionPointOut>
<relPosition x="105" y="15"/>
</connectionPointOut>
<expression>BOOL#TRUE</expression>
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<position x="385" y="2275"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="51" formalParameter="OUT">
<position x="385" y="2290"/>
<position x="310" y="2290"/>
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<expression>Global_RS.S</expression>
</outVariable>
<outVariable localId="20" height="30" width="106" executionOrderId="0" negated="false">
<position x="385" y="2390"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="41" formalParameter="OUT">
<position x="385" y="2405"/>
<position x="310" y="2405"/>
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</connectionPointIn>
<expression>Global_RS.R1</expression>
</outVariable>
<inVariable localId="24" height="30" width="106" executionOrderId="0" negated="false">
<position x="75" y="2390"/>
<connectionPointOut>
<relPosition x="106" y="15"/>
</connectionPointOut>
<expression>Global_RS.Q1</expression>
</inVariable>
<block localId="41" width="70" height="85" typeName="OR" executionOrderId="0">
<position x="240" y="2370"/>
<inputVariables>
<variable formalParameter="IN1">
<connectionPointIn>
<relPosition x="0" y="35"/>
<connection refLocalId="24">
<position x="240" y="2405"/>
<position x="180" y="2405"/>
</connection>
</connectionPointIn>
</variable>
<variable formalParameter="IN2">
<connectionPointIn>
<relPosition x="0" y="70"/>
<connection refLocalId="48">
<position x="240" y="2440"/>
<position x="180" y="2440"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="70" y="35"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inVariable localId="48" height="30" width="105" executionOrderId="0" negated="false">
<position x="75" y="2425"/>
<connectionPointOut>
<relPosition x="105" y="15"/>
</connectionPointOut>
<expression>BOOL#FALSE</expression>
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<position x="930" y="1774"/>
<connectionPointIn>
<relPosition x="0" y="16"/>
<connection refLocalId="55" formalParameter="OUT">
<position x="930" y="1790"/>
<position x="855" y="1790"/>
</connection>
</connectionPointIn>
<expression>Test_TOD_STRING</expression>
</outVariable>
<block localId="55" width="125" height="45" typeName="TOD_TO_STRING" executionOrderId="0">
<position x="730" y="1759"/>
<inputVariables>
<variable formalParameter="IN">
<connectionPointIn>
<relPosition x="0" y="31"/>
<connection refLocalId="39">
<position x="730" y="1790"/>
<position x="655" y="1790"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="125" y="31"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inOutVariable localId="39" height="30" width="75" executionOrderId="0" negatedOut="false" negatedIn="false">
<position x="580" y="1774"/>
<connectionPointIn>
<relPosition x="0" y="16"/>
<connection refLocalId="37" formalParameter="OUT">
<position x="580" y="1790"/>
<position x="520" y="1790"/>
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</connectionPointIn>
<connectionPointOut>
<relPosition x="75" y="16"/>
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<expression>Test_TOD</expression>
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<connectionPointOut>
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<expression>42</expression>
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<position x="240" y="2510"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="49">
<position x="240" y="2525"/>
<position x="190" y="2525"/>
</connection>
</connectionPointIn>
<expression>TOTO</expression>
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<position x="240" y="2550"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="49">
<position x="240" y="2565"/>
<position x="215" y="2565"/>
<position x="215" y="2525"/>
<position x="190" y="2525"/>
</connection>
</connectionPointIn>
<expression>TUTU</expression>
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<position x="60" y="1944"/>
<connectionPointOut>
<relPosition x="146" y="16"/>
</connectionPointOut>
<expression>Second_Python_Var</expression>
</inVariable>
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<position x="100" y="1385"/>
<connectionPointOut>
<relPosition x="30" y="15"/>
</connectionPointOut>
<expression>1</expression>
</inVariable>
<block localId="61" typeName="function0" executionOrderId="0" height="45" width="111">
<position x="760" y="1170"/>
<inputVariables>
<variable formalParameter="LocalVar0">
<connectionPointIn>
<relPosition x="0" y="30"/>
<connection refLocalId="62">
<position x="760" y="1200"/>
<position x="723" y="1200"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="111" y="30"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inVariable localId="62" executionOrderId="0" height="30" width="58" negated="false">
<position x="665" y="1185"/>
<connectionPointOut>
<relPosition x="58" y="15"/>
</connectionPointOut>
<expression>fefvsd</expression>
</inVariable>
<outVariable localId="63" executionOrderId="0" height="30" width="58" negated="false">
<position x="905" y="1185"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="61" formalParameter="OUT">
<position x="905" y="1200"/>
<position x="871" y="1200"/>
</connection>
</connectionPointIn>
<expression>fefvsd</expression>
</outVariable>
<comment localId="53" height="80" width="420">
<position x="75" y="2160"/>
<content>
<xhtml:p><![CDATA[Shows global variables access from resource configuration (res_pytest) and from project's configuration.]]></xhtml:p>
</content>
</comment>
<inVariable localId="18" height="30" width="74" executionOrderId="0" negated="false">
<position x="986" y="795"/>
<connectionPointOut>
<relPosition x="74" y="15"/>
</connectionPointOut>
<expression>mux2_sel</expression>
</inVariable>
<comment localId="60" height="45" width="930">
<position x="60" y="1480"/>
<content>
<xhtml:p><![CDATA[Here is shown how to convert values between different types (BCD, DT, TOD, STRING and others) using standard functions.]]></xhtml:p>
</content>
</comment>
<comment localId="64" height="55" width="300">
<position x="665" y="1095"/>
<content>
<xhtml:p><![CDATA[Example of usage of user-defined function.]]></xhtml:p>
</content>
</comment>
<comment localId="65" height="45" width="410">
<position x="55" y="1315"/>
<content>
<xhtml:p><![CDATA[Shows access variable defined in python extension. ]]></xhtml:p>
</content>
</comment>
<inVariable localId="66" height="30" width="137" executionOrderId="0" negated="false">
<position x="60" y="1685"/>
<connectionPointOut>
<relPosition x="137" y="15"/>
</connectionPointOut>
<expression>Test_BCD_WRONG</expression>
</inVariable>
<block localId="67" width="106" height="100" typeName="BCD_TO_UINT" executionOrderId="0">
<position x="265" y="1620"/>
<inputVariables>
<variable formalParameter="EN">
<connectionPointIn>
<relPosition x="0" y="40"/>
</connectionPointIn>
</variable>
<variable formalParameter="IN">
<connectionPointIn>
<relPosition x="0" y="80"/>
<connection refLocalId="66">
<position x="265" y="1700"/>
<position x="255" y="1700"/>
<position x="255" y="1700"/>
<position x="345" y="1700"/>
<position x="345" y="1700"/>
<position x="197" y="1700"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="ENO">
<connectionPointOut>
<relPosition x="106" y="40"/>
</connectionPointOut>
</variable>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="106" y="80"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<outVariable localId="68" height="30" width="196" executionOrderId="0" negated="false">
<position x="580" y="1685"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="67" formalParameter="OUT">
<position x="580" y="1700"/>
<position x="371" y="1700"/>
</connection>
</connectionPointIn>
<expression>Test_BCD_WRONG_RESULT</expression>
</outVariable>
<comment localId="69" height="165" width="375">
<position x="795" y="1590"/>
<content>
<xhtml:p><![CDATA[Incorrect BCD number is not converted to UINT.
151 (16#97) is good BCD number , but
154 (16#9A) is not.
Try this out and look at value of Test_BCD_CONVERTED variable.
]]></xhtml:p>
</content>
</comment>
<outVariable localId="70" height="30" width="185" executionOrderId="0" negated="false">
<position x="580" y="1645"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="67" formalParameter="ENO">
<position x="580" y="1660"/>
<position x="370" y="1660"/>
</connection>
</connectionPointIn>
<expression>Test_BCD_CONVERTED</expression>
</outVariable>
<comment localId="71" height="215" width="680">
<position x="35" y="30"/>
<content>
<xhtml:p><![CDATA[This example shows many features in Beremiz:
1. How to implement python extensions.
2. How to implement basic C extension.
3. How to use C code in IEC POUs.
4. How to call C functions from python code.
5. How to avoid race conditions between IEC, C and python code.
6. How to convert betweet different IEC types.
]]></xhtml:p>
</content>
</comment>
<outVariable localId="72" executionOrderId="0" height="30" width="60" negated="false">
<position x="1065" y="1970"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="76" formalParameter="OUT">
<position x="1065" y="1985"/>
<position x="1025" y="1985"/>
<position x="1025" y="1995"/>
<position x="985" y="1995"/>
</connection>
</connectionPointIn>
<expression>Grumpf</expression>
</outVariable>
<inVariable localId="73" executionOrderId="0" height="30" width="85" negated="false">
<position x="625" y="1940"/>
<connectionPointOut>
<relPosition x="85" y="15"/>
</connectionPointOut>
<expression>BOOL#TRUE</expression>
</inVariable>
<inVariable localId="74" executionOrderId="0" height="30" width="70" negated="false">
<position x="625" y="1975"/>
<connectionPointOut>
<relPosition x="70" y="15"/>
</connectionPointOut>
<expression>Test_DT</expression>
</inVariable>
<block localId="75" typeName="RTC" instanceName="RTC0" executionOrderId="0" height="90" width="65">
<position x="760" y="1925"/>
<inputVariables>
<variable formalParameter="IN">
<connectionPointIn>
<relPosition x="0" y="35"/>
<connection refLocalId="73">
<position x="760" y="1960"/>
<position x="735" y="1960"/>
<position x="735" y="1955"/>
<position x="710" y="1955"/>
</connection>
</connectionPointIn>
</variable>
<variable formalParameter="PDT">
<connectionPointIn>
<relPosition x="0" y="70"/>
<connection refLocalId="74">
<position x="760" y="1995"/>
<position x="727" y="1995"/>
<position x="727" y="1990"/>
<position x="695" y="1990"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="Q">
<connectionPointOut>
<relPosition x="65" y="35"/>
</connectionPointOut>
</variable>
<variable formalParameter="CDT">
<connectionPointOut>
<relPosition x="65" y="70"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<block localId="76" typeName="DT_TO_STRING" executionOrderId="0" height="40" width="110">
<position x="875" y="1965"/>
<inputVariables>
<variable formalParameter="IN">
<connectionPointIn>
<relPosition x="0" y="30"/>
<connection refLocalId="75" formalParameter="CDT">
<position x="875" y="1995"/>
<position x="825" y="1995"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="110" y="30"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<block localId="77" typeName="ADD" executionOrderId="0" height="60" width="65">
<position x="170" y="1370"/>
<inputVariables>
<variable formalParameter="IN1">
<connectionPointIn>
<relPosition x="0" y="30"/>
<connection refLocalId="59">
<position x="170" y="1400"/>
<position x="130" y="1400"/>
</connection>
</connectionPointIn>
</variable>
<variable formalParameter="IN2">
<connectionPointIn>
<relPosition x="0" y="50"/>
<connection refLocalId="78">
<position x="170" y="1420"/>
<position x="160" y="1420"/>
<position x="160" y="1450"/>
<position x="390" y="1450"/>
<position x="390" y="1400"/>
<position x="380" y="1400"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="OUT">
<connectionPointOut>
<relPosition x="65" y="30"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<outVariable localId="47" executionOrderId="0" height="30" width="130" negated="false">
<position x="625" y="1335"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="79">
<position x="625" y="1350"/>
<position x="590" y="1350"/>
</connection>
</connectionPointIn>
<expression>Test_Python_Var</expression>
</outVariable>
<inVariable localId="79" executionOrderId="0" height="25" width="30" negated="false">
<position x="560" y="1340"/>
<connectionPointOut>
<relPosition x="30" y="10"/>
</connectionPointOut>
<expression>23</expression>
</inVariable>
<inOutVariable localId="78" executionOrderId="0" height="30" width="100" negatedOut="false" negatedIn="false">
<position x="280" y="1385"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="77" formalParameter="OUT">
<position x="280" y="1400"/>
<position x="235" y="1400"/>
</connection>
</connectionPointIn>
<connectionPointOut>
<relPosition x="100" y="15"/>
</connectionPointOut>
<expression>SomeVarName</expression>
</inOutVariable>
</FBD>
</body>
</pou>
<pou name="C_Pragma" pouType="functionBlock">
<interface>
<outputVars>
<variable name="OUT">
<type>
<SINT/>
</type>
</variable>
</outputVars>
<inputVars>
<variable name="IN">
<type>
<SINT/>
</type>
</variable>
</inputVars>
<localVars>
<variable name="COORDS">
<type>
<array>
<dimension lower="0" upper="5"/>
<baseType>
<SINT/>
</baseType>
</array>
</type>
<initialValue>
<arrayValue>
<value>
<simpleValue value="54"/>
</value>
<value>
<simpleValue value="55"/>
</value>
<value>
<simpleValue value="56"/>
</value>
<value>
<simpleValue value="57"/>
</value>
<value>
<simpleValue value="58"/>
</value>
<value>
<simpleValue value="59"/>
</value>
</arrayValue>
</initialValue>
</variable>
<variable name="SMURF">
<type>
<derived name="CPLX_TYPE"/>
</type>
</variable>
</localVars>
<externalVars>
<variable name="Global_RS">
<type>
<derived name="RS"/>
</type>
</variable>
<variable name="Dudiduda">
<type>
<derived name="blups"/>
</type>
</variable>
</externalVars>
</interface>
<body>
<ST>
<xhtml:p><![CDATA[(* hereafter is a C pragma accessing FB interface in a clean way *)
{{
char toPLC;
char fromPLC = GetFbVar(IN);
extern int PLC_C_Call(char, char *);
if(PLC_C_Call(fromPLC, &toPLC)){
SetFbVar(OUT, toPLC);
}
if(0){
/* that code demonstrate C access to complex types */
char somebyte = GetFbVar(COORDS, .table[3]);
SetFbVar(SMURF, somebyte, .FIRSTBYTE);
SetFbVar(COORDS, somebyte, .table[4]);
}
}}
(* If you do not use GetFbVar and SetFbVar macros, expect unexpected behaviour*)
Global_RS();
(* testing access to global struct array *)
Dudiduda[2].FIRSTBYTE := 0;
]]></xhtml:p>
</ST>
</body>
</pou>
<pou name="norm" pouType="function">
<interface>
<returnType>
<REAL/>
</returnType>
<inputVars>
<variable name="IN1">
<type>
<REAL/>
</type>
</variable>
<variable name="IN2">
<type>
<REAL/>
</type>
</variable>
</inputVars>
</interface>
<body>
<ST>
<xhtml:p><![CDATA[NORM := SQRT(IN1 * IN1 + IN2 * IN2);]]></xhtml:p>
</ST>
</body>
</pou>
<pou name="function0" pouType="function">
<interface>
<returnType>
<derived name="datatype0"/>
</returnType>
<inputVars>
<variable name="LocalVar0">
<type>
<derived name="datatype0"/>
</type>
</variable>
</inputVars>
</interface>
<body>
<ST>
<xhtml:p><![CDATA[function0 := LocalVar0;
]]></xhtml:p>
</ST>
</body>
</pou>
</pous>
</types>
<instances>
<configurations>
<configuration name="config">
<resource name="res_pytest">
<task name="pytest_task" priority="0" interval="T#500ms"/>
<globalVars>
<variable name="TOTO">
<type>
<INT/>
</type>
</variable>
</globalVars>
<pouInstance name="pytest_instance" typeName="main_pytest"/>
</resource>
<globalVars>
<variable name="Global_RS">
<type>
<derived name="RS"/>
</type>
</variable>
<variable name="Dudiduda">
<type>
<derived name="blups"/>
</type>
</variable>
<variable name="TUTU">
<type>
<INT/>
</type>
</variable>
</globalVars>
</configuration>
</configurations>
</instances>
</project>