# HG changeset patch
# User Edouard Tisserant
# Date 1671194618 -3600
# Node ID 3c60c78dfa5d4af48811a2cf22f230360b7c29a1
# Parent 39ae17a1cabe0e331e782457b5fbcb5463bc81f1
py_ext: add CSV file reading POUs in python extension library
diff -r 39ae17a1cabe -r 3c60c78dfa5d py_ext/pous.xml
--- a/py_ext/pous.xml Fri Dec 16 13:41:03 2022 +0100
+++ b/py_ext/pous.xml Fri Dec 16 13:43:38 2022 +0100
@@ -1,10 +1,10 @@
<?xml version='1.0' encoding='utf-8'?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.plcopen.org/xml/tc6_0201" xmlns:xhtml="http://www.w3.org/1999/xhtml" xsi:schemaLocation="http://www.plcopen.org/xml/tc6_0201">
<fileHeader companyName="Beremiz" productName="Beremiz" productVersion="0.0" creationDateTime="2008-12-14T16:53:26"/>
- <contentHeader name="Beremiz non-standard POUs library" modificationDateTime="2014-03-17T08:07:24">
+ <contentHeader name="Beremiz non-standard POUs library" modificationDateTime="2022-12-16T11:59:30">
<coordinateInfo>
<fbd>
- <scaling x="0" y="0"/>
+ <scaling x="8" y="8"/>
</fbd>
<ld>
<scaling x="0" y="0"/>
@@ -17,6 +17,1646 @@
<types>
<dataTypes/>
<pous>
+ <pou name="csv_read_by_string" pouType="functionBlock">
+ <interface>
+ <externalVars>
+ <variable name="pyext_csv_update">
+ <type>
+ <BOOL/>
+ </type>
+ </variable>
+ </externalVars>
+ <outputVars>
+ <variable name="ACK">
+ <type>
+ <BOOL/>
+ </type>
+ </variable>
+ <variable name="RESULT">
+ <type>
+ <string/>
+ </type>
+ </variable>
+ </outputVars>
+ <inputVars>
+ <variable name="FILE_NAME">
+ <type>
+ <string/>
+ </type>
+ </variable>
+ <variable name="ROW">
+ <type>
+ <string/>
+ </type>
+ </variable>
+ <variable name="COLUMN">
+ <type>
+ <string/>
+ </type>
+ </variable>
+ </inputVars>
+ <localVars>
+ <variable name="OLDCODE">
+ <type>
+ <string/>
+ </type>
+ </variable>
+ <variable name="py_eval">
+ <type>
+ <derived name="python_eval"/>
+ </type>
+ </variable>
+ <variable name="R_TRIG0">
+ <type>
+ <derived name="R_TRIG"/>
+ </type>
+ </variable>
+ <variable name="R_TRIG1">
+ <type>
+ <derived name="R_TRIG"/>
+ </type>
+ </variable>
+ <variable name="SR0">
+ <type>
+ <derived name="SR"/>
+ </type>
+ </variable>
+ </localVars>
+ </interface>
+ <body>
+ <FBD>
+ <block localId="7" typeName="CONCAT" executionOrderId="0" height="192" width="64">
+ <position x="360" y="112"/>
+ <inputVariables>
+ <variable formalParameter="IN1">
+ <connectionPointIn>
+ <relPosition x="0" y="32"/>
+ <connection refLocalId="8">
+ <position x="360" y="144"/>
+ <position x="320" y="144"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ <variable formalParameter="IN2">
+ <connectionPointIn>
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+ <connection refLocalId="9">
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+ <position x="152" y="168"/>
+ </connection>
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+ <variable formalParameter="IN3">
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+ <position x="320" y="240"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ <variable formalParameter="IN6">
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+ <position x="320" y="288"/>
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+ </inputVariables>
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+ <variable formalParameter="OUT">
+ <connectionPointOut>
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+ </connectionPointOut>
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+ <position x="160" y="128"/>
+ <connectionPointOut>
+ <relPosition x="160" y="16"/>
+ </connectionPointOut>
+ <expression>'CSVRdStr("'</expression>
+ </inVariable>
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+ <position x="40" y="152"/>
+ <connectionPointOut>
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+ <position x="208" y="184"/>
+ <connectionPointOut>
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+ <expression>'","'</expression>
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+ <connectionPointOut>
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+ <expression>COLUMN</expression>
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+ </outputVariables>
+ </block>
+ <block localId="18" typeName="SEL" executionOrderId="0" height="96" width="64">
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+ <inputVariables>
+ <variable formalParameter="G">
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+ <connection refLocalId="4">
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+ <variable formalParameter="OUT">
+ <connectionPointOut>
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+ </variable>
+ </outputVariables>
+ </block>
+ <connector name="Code" localId="19" height="24" width="128">
+ <position x="480" y="136"/>
+ <connectionPointIn>
+ <relPosition x="0" y="8"/>
+ <connection refLocalId="7" formalParameter="OUT">
+ <position x="480" y="144"/>
+ <position x="424" y="144"/>
+ </connection>
+ </connectionPointIn>
+ </connector>
+ <outVariable localId="17" executionOrderId="0" height="32" width="66" negated="false">
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+ <connectionPointIn>
+ <relPosition x="0" y="16"/>
+ <connection refLocalId="18" formalParameter="OUT">
+ <position x="784" y="408"/>
+ <position x="744" y="408"/>
+ </connection>
+ </connectionPointIn>
+ <expression>OLDCODE</expression>
+ </outVariable>
+ <inVariable localId="20" executionOrderId="0" height="32" width="72" negated="false">
+ <position x="560" y="416"/>
+ <connectionPointOut>
+ <relPosition x="72" y="16"/>
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+ <expression>OLDCODE</expression>
+ </inVariable>
+ <inVariable localId="21" executionOrderId="0" height="32" width="72" negated="false">
+ <position x="96" y="448"/>
+ <connectionPointOut>
+ <relPosition x="72" y="16"/>
+ </connectionPointOut>
+ <expression>OLDCODE</expression>
+ </inVariable>
+ <continuation name="Code" localId="4" height="24" width="128">
+ <position x="504" y="448"/>
+ <connectionPointOut>
+ <relPosition x="128" y="8"/>
+ </connectionPointOut>
+ </continuation>
+ <continuation name="Code" localId="22" height="24" width="128">
+ <position x="40" y="424"/>
+ <connectionPointOut>
+ <relPosition x="128" y="16"/>
+ </connectionPointOut>
+ </continuation>
+ <connector name="CodeChange" localId="23" height="24" width="120">
+ <position x="328" y="432"/>
+ <connectionPointIn>
+ <relPosition x="0" y="8"/>
+ <connection refLocalId="16" formalParameter="OUT">
+ <position x="328" y="440"/>
+ <position x="272" y="440"/>
+ </connection>
+ </connectionPointIn>
+ </connector>
+ <continuation name="CodeChange" localId="25" height="24" width="120">
+ <position x="504" y="392"/>
+ <connectionPointOut>
+ <relPosition x="120" y="16"/>
+ </connectionPointOut>
+ </continuation>
+ <comment localId="26" height="40" width="232">
+ <position x="48" y="40"/>
+ <content>
+ <xhtml:p><![CDATA[Generate python code line]]></xhtml:p>
+ </content>
+ </comment>
+ <comment localId="27" height="48" width="312">
+ <position x="40" y="328"/>
+ <content>
+ <xhtml:p><![CDATA[Detect changes in generated code line]]></xhtml:p>
+ </content>
+ </comment>
+ <comment localId="28" height="48" width="520">
+ <position x="48" y="512"/>
+ <content>
+ <xhtml:p><![CDATA[Execute python code on change or globally when CSV is updated]]></xhtml:p>
+ </content>
+ </comment>
+ <block localId="1" width="104" height="80" typeName="python_eval" instanceName="py_eval" executionOrderId="0">
+ <position x="552" y="600"/>
+ <inputVariables>
+ <variable formalParameter="TRIG">
+ <connectionPointIn>
+ <relPosition x="0" y="32"/>
+ <connection refLocalId="15" formalParameter="OUT">
+ <position x="552" y="632"/>
+ <position x="360" y="632"/>
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+ <connection refLocalId="2">
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+ <position x="528" y="664"/>
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+ <inOutVariables/>
+ <outputVariables>
+ <variable formalParameter="ACK">
+ <connectionPointOut>
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+ </connectionPointOut>
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+ <variable formalParameter="RESULT">
+ <connectionPointOut>
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+ <position x="32" y="616"/>
+ <connectionPointOut>
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+ </connectionPointOut>
+ <expression>pyext_csv_update</expression>
+ </inVariable>
+ <outVariable localId="5" height="24" width="40" executionOrderId="0" negated="false">
+ <position x="1216" y="632"/>
+ <connectionPointIn>
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+ </outVariable>
+ <outVariable localId="6" height="24" width="64" executionOrderId="0" negated="false">
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+ <position x="672" y="664"/>
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+ </FBD>
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+ </pou>
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+ <interface>
+ <externalVars>
+ <variable name="pyext_csv_update">
+ <type>
+ <BOOL/>
+ </type>
+ </variable>
+ </externalVars>
+ <outputVars>
+ <variable name="ACK">
+ <type>
+ <BOOL/>
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+ <variable name="RESULT">
+ <type>
+ <string/>
+ </type>
+ </variable>
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+ <localVars>
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+ <xhtml:p><![CDATA[Execute python code on change or globally when CSV is updated]]></xhtml:p>
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+ <content>
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+ <position x="712" y="720"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ </inputVariables>
+ <inOutVariables/>
+ <outputVariables>
+ <variable formalParameter="OUT">
+ <connectionPointOut>
+ <relPosition x="56" y="32"/>
+ </connectionPointOut>
+ </variable>
+ </outputVariables>
+ </block>
+ <block localId="34" typeName="NE" executionOrderId="0" height="64" width="64">
+ <position x="880" y="672"/>
+ <inputVariables>
+ <variable formalParameter="IN1">
+ <connectionPointIn>
+ <relPosition x="0" y="32"/>
+ <connection refLocalId="33" formalParameter="OUT">
+ <position x="880" y="704"/>
+ <position x="792" y="704"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ <variable formalParameter="IN2">
+ <connectionPointIn>
+ <relPosition x="0" y="56"/>
+ <connection refLocalId="36">
+ <position x="880" y="728"/>
+ <position x="868" y="728"/>
+ <position x="868" y="720"/>
+ <position x="856" y="720"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ </inputVariables>
+ <inOutVariables/>
+ <outputVariables>
+ <variable formalParameter="OUT">
+ <connectionPointOut>
+ <relPosition x="64" y="32"/>
+ </connectionPointOut>
+ </variable>
+ </outputVariables>
+ </block>
+ <inVariable localId="35" executionOrderId="0" height="24" width="24" negated="false">
+ <position x="688" y="712"/>
+ <connectionPointOut>
+ <relPosition x="24" y="8"/>
+ </connectionPointOut>
+ <expression>1</expression>
+ </inVariable>
+ <inVariable localId="36" executionOrderId="0" height="24" width="40" negated="false">
+ <position x="816" y="712"/>
+ <connectionPointOut>
+ <relPosition x="40" y="8"/>
+ </connectionPointOut>
+ <expression>'#'</expression>
+ </inVariable>
+ <block localId="37" typeName="R_TRIG" instanceName="R_TRIG2" executionOrderId="0" height="48" width="64">
+ <position x="880" y="616"/>
+ <inputVariables>
+ <variable formalParameter="CLK">
+ <connectionPointIn>
+ <relPosition x="0" y="32"/>
+ <connection refLocalId="40" formalParameter="ACK">
+ <position x="880" y="648"/>
+ <position x="688" y="648"/>
+ <position x="688" y="672"/>
+ <position x="656" y="672"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ </inputVariables>
+ <inOutVariables/>
+ <outputVariables>
+ <variable formalParameter="Q">
+ <connectionPointOut>
+ <relPosition x="64" y="32"/>
+ </connectionPointOut>
+ </variable>
+ </outputVariables>
+ </block>
+ <block localId="38" typeName="SR" instanceName="SR0" executionOrderId="0" height="64" width="48">
+ <position x="1120" y="648"/>
+ <inputVariables>
+ <variable formalParameter="S1">
+ <connectionPointIn>
+ <relPosition x="0" y="32"/>
+ <connection refLocalId="39" formalParameter="OUT">
+ <position x="1120" y="680"/>
+ <position x="1056" y="680"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ <variable formalParameter="R" edge="rising">
+ <connectionPointIn>
+ <relPosition x="0" y="56"/>
+ <connection refLocalId="15" formalParameter="OUT">
+ <position x="1120" y="704"/>
+ <position x="1088" y="704"/>
+ <position x="1088" y="776"/>
+ <position x="376" y="776"/>
+ <position x="376" y="672"/>
+ <position x="360" y="672"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ </inputVariables>
+ <inOutVariables/>
+ <outputVariables>
+ <variable formalParameter="Q1">
+ <connectionPointOut>
+ <relPosition x="48" y="32"/>
+ </connectionPointOut>
+ </variable>
+ </outputVariables>
+ </block>
+ <block localId="39" typeName="AND" executionOrderId="0" height="64" width="64">
+ <position x="992" y="648"/>
+ <inputVariables>
+ <variable formalParameter="IN1">
+ <connectionPointIn>
+ <relPosition x="0" y="32"/>
+ <connection refLocalId="37" formalParameter="Q">
+ <position x="992" y="680"/>
+ <position x="976" y="680"/>
+ <position x="976" y="648"/>
+ <position x="944" y="648"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ <variable formalParameter="IN2">
+ <connectionPointIn>
+ <relPosition x="0" y="56"/>
+ <connection refLocalId="34" formalParameter="OUT">
+ <position x="992" y="704"/>
+ <position x="944" y="704"/>
+ </connection>
+ </connectionPointIn>
+ </variable>
+ </inputVariables>
+ <inOutVariables/>
+ <outputVariables>
+ <variable formalParameter="OUT">
+ <connectionPointOut>
+ <relPosition x="64" y="32"/>
+ </connectionPointOut>
+ </variable>
+ </outputVariables>
+ </block>
+ </FBD>
+ </body>
+ </pou>
<pou name="python_eval" pouType="functionBlock">
<interface>
<inputVars>
@@ -445,6 +2085,19 @@
</pous>
</types>
<instances>
- <configurations/>
+ <configurations>
+ <configuration name="configuration0">
+ <globalVars>
+ <variable name="pyext_csv_update">
+ <type>
+ <BOOL/>
+ </type>
+ <initialValue>
+ <simpleValue value="TRUE"/>
+ </initialValue>
+ </variable>
+ </globalVars>
+ </configuration>
+ </configurations>
</instances>
</project>
diff -r 39ae17a1cabe -r 3c60c78dfa5d py_ext/py_ext.py
--- a/py_ext/py_ext.py Fri Dec 16 13:41:03 2022 +0100
+++ b/py_ext/py_ext.py Fri Dec 16 13:43:38 2022 +0100
@@ -30,6 +30,98 @@
from py_ext.PythonFileCTNMixin import PythonFileCTNMixin
import util.paths as paths
+pyext_python_lib_code = """
+
+import csv
+from collections import OrderedDict
+
+csv_int_files = {}
+def CSVRdInt(fname, rowidx, colidx):
+ \"\"\"
+ Return value at row/column pointed by integer indexes
+ Assumes data starts at first row and first column, no headers.
+ \"\"\"
+ global csv_int_files
+ data = csv_int_files.get(fname, None)
+ if data is None:
+ data = list()
+ try:
+ csvfile = open(fname, 'rb')
+ except IOError:
+ return "#FILE_NOT_FOUND"
+ try:
+ dialect = csv.Sniffer().sniff(csvfile.read(1024))
+ csvfile.seek(0)
+ reader = csv.reader(csvfile, dialect)
+ for row in reader:
+ data.append(row)
+ except csv.Error:
+ return "#CSV_ERROR"
+ finally:
+ csvfile.close()
+ csv_int_files[fname] = data
+
+ try:
+ row = data[rowidx]
+ except IndexError:
+ return "#ROW_NOT_FOUND"
+
+ try:
+ return row[colidx]
+ except IndexError:
+ return "#COL_NOT_FOUND"
+
+
+csv_str_files = {}
+def CSVRdStr(fname, rowname, colname):
+ \"\"\"
+ Return value at row/column pointed by a pair of names as string
+ Assumes first row is column headers and first column is row name.
+ \"\"\"
+ global csv_str_files
+ entry = csv_str_files.get(fname, None)
+ if entry is None:
+ data = dict()
+ try:
+ csvfile = open(fname, 'rb')
+ except IOError:
+ return "#FILE_NOT_FOUND"
+ try:
+ dialect = csv.Sniffer().sniff(csvfile.read(1024))
+ csvfile.seek(0)
+ reader = csv.reader(csvfile, dialect)
+ headers = dict([(name, index) for index, name in enumerate(reader.next()[1:])])
+ for row in reader:
+ data[row[0]] = row[1:]
+ except csv.Error:
+ return "#CSV_ERROR"
+ finally:
+ csvfile.close()
+ csv_str_files[fname] = (headers, data)
+ else:
+ headers, data = entry
+
+ try:
+ row = data[rowname]
+ except KeyError:
+ return "#ROW_NOT_FOUND"
+
+ try:
+ colidx = headers[colname]
+ except KeyError:
+ return "#COL_NOT_FOUND"
+
+ try:
+ return row[colidx]
+ except IndexError:
+ return "#COL_NOT_FOUND"
+
+def pyext_csv_reload():
+ global csv_int_files, csv_str_files
+ csv_int_files.clear()
+ csv_str_files.clear()
+
+"""
class PythonLibrary(POULibrary):
def GetLibraryPath(self):
@@ -57,7 +149,13 @@
pythonfile.write(plc_python_code)
pythonfile.close()
- return (["py_ext"], [(Gen_Pythonfile_path, IECCFLAGS)], True), ""
+ runtimefile_path = os.path.join(buildpath, "runtime_00_pyext.py")
+ runtimefile = open(runtimefile_path, 'w')
+ runtimefile.write(pyext_python_lib_code)
+ runtimefile.close()
+ return ((["py_ext"], [(Gen_Pythonfile_path, IECCFLAGS)], True), "",
+ ("runtime_00_pyext.py", open(runtimefile_path, "rb")))
+
class PythonFile(PythonFileCTNMixin):