beremiz

py_ext: fix CSV Writer

18 months ago, Edouard Tisserant
d2f5eb3c7d6e
py_ext: fix CSV Writer

fix POU logic :
- SAVE is a BOOL
- invocation of py_eval on rising edge of SAVE
- remove save python argument

fix python:
- use no encoding for file open (python2)
- re-use detected dialect if any
- use no "rt+" and truncate since no need to re-sniff dialect for output file
- return "OK" instead of "#SUCCESS", preventing POU logic to ACK result
- support creating new line if writing just after last line
- support appending data on short rows

fix example:
- use a HMI:Button to trigger CSV write instead of HMI:Input +1
- reload CSVs on on each new CSV opened in file browser
- add display of CSV write output
<?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="2008-12-14T16:21:19"/>
<contentHeader name="Beremiz wxHMI test" modificationDateTime="2017-06-05T14:01:40">
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<scaling x="5" y="5"/>
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</contentHeader>
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<dataTypes/>
<pous>
<pou name="main_pytest" pouType="program">
<interface>
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<variable name="getCheckBoxState">
<type>
<derived name="python_poll"/>
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</variable>
<variable name="counter">
<type>
<INT/>
</type>
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<variable name="setSpinCtrlValue">
<type>
<derived name="python_poll"/>
</type>
</variable>
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</interface>
<body>
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<variable formalParameter="ACK">
<connectionPointOut>
<relPosition x="125" y="35"/>
</connectionPointOut>
</variable>
<variable formalParameter="RESULT">
<connectionPointOut>
<relPosition x="125" y="70"/>
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<expression>BOOL#TRUE</expression>
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<expression>'int(HMIFrame.checkbox_1.GetValue())'</expression>
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<expression>')'</expression>
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<connectionPointOut>
<relPosition x="330" y="15"/>
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<expression>'HMIFrame.spin_ctrl_1.SetValue('</expression>
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<variable formalParameter="CODE">
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<variable formalParameter="ACK">
<connectionPointOut>
<relPosition x="125" y="35"/>
</connectionPointOut>
</variable>
<variable formalParameter="RESULT">
<connectionPointOut>
<relPosition x="125" y="70"/>
</connectionPointOut>
</variable>
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<block localId="37" width="125" height="45" typeName="INT_TO_BOOL" executionOrderId="0">
<position x="870" y="255"/>
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<variable formalParameter="IN">
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<variable formalParameter="OUT">
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</variable>
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<position x="30" y="485"/>
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<relPosition x="60" y="15"/>
</connectionPointOut>
<expression>INT#1</expression>
</inVariable>
<comment localId="101" height="115" width="680">
<position x="10" y="30"/>
<content>
<xhtml:p><![CDATA[This example shows how IEC program in PLC can interact with UI created using wxGlade.
"WxGlade GUI" is extension to build user interface for PLC using wxGlade.
To edit user interface click on "WxGlade" icon in extension settings.]]></xhtml:p>
</content>
</comment>
</FBD>
</body>
</pou>
</pous>
</types>
<instances>
<configurations>
<configuration name="config">
<resource name="res_pytest">
<task name="pytest_task" interval="t#100ms" priority="0"/>
<pouInstance name="pytest_instance" typeName="main_pytest"/>
</resource>
</configuration>
</configurations>
</instances>
</project>