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<?xml version="1.0" encoding="utf-8"?>

<project xmlns="http://www.plcopen.org/xml/tc6_0200">

  <fileHeader companyName="" productName="CODESYS" productVersion="CODESYS V3.5 SP11" creationDateTime="2018-07-16T11:54:08.0749653" />

  <contentHeader name="Raspberry SPI PiFace" version="1.2.0.0" modificationDateTime="2015-11-24T04:28:44" organization="3S - Smart Software Solutions GmbH" author="3S - Smart Software Solutions GmbH">

    <Comment>Library containing device support of PiFace Digital</Comment>

    <coordinateInfo>

      <fbd>

        <scaling x="1" y="1" />

      </fbd>

      <ld>

        <scaling x="1" y="1" />

      </ld>

      <sfc>

        <scaling x="1" y="1" />

      </sfc>

    </coordinateInfo>

    <addData>

      <data name="http://www.3s-software.com/plcopenxml/projectinformation" handleUnknown="implementation">

        <ProjectInformation>

          <property name="Author" type="string">3S - Smart Software Solutions GmbH</property>

          <property name="Company" type="string">3S - Smart Software Solutions GmbH</property>

          <property name="DefaultNamespace" type="string">PiFace</property>

          <property name="Description" type="string">Library containing device support of PiFace Digital</property>

          <property name="Placeholder" type="string">PlaceholderTemplate</property>

          <property name="Project" type="string">SPI_PiFace</property>

          <property name="Released" type="boolean">false</property>

          <property name="Title" type="string">Raspberry SPI PiFace</property>

          <property name="Version" type="version">1.2.0.0</property>

          <property name="library-category-list" type="library-category-list" />

        </ProjectInformation>

      </data>

    </addData>

  </contentHeader>

  <types>

    <dataTypes />

    <pous>

      <pou name="PiFaceDigital" pouType="functionBlock">

        <interface>

          <inputVars>

            <variable name="byOut">

              <type>

                <BYTE />

              </type>

            </variable>

          </inputVars>

          <outputVars>

            <variable name="byIn">

              <type>

                <BYTE />

              </type>

            </variable>

          </outputVars>

          <localVars>

            <variable name="_byHardwareAddress">

              <type>

                <BYTE />

              </type>

            </variable>

          </localVars>

          <tempVars>

            <variable name="i">

              <type>

                <INT />

              </type>

            </variable>

            <variable name="k">

              <type>

                <INT />

              </type>

            </variable>

          </tempVars>

          <addData>

            <data name="http://www.3s-software.com/plcopenxml/pouinheritance" handleUnknown="implementation">

              <Inheritance>

                <Extends>spi</Extends>

              </Inheritance>

            </data>

          </addData>

        </interface>

        <body>

          <ST>

            <xhtml xmlns="http://www.w3.org/1999/xhtml">SUPER^();



CASE _iState OF

0:

	IF SUPER^.init() THEN

		_iState := 1;

	END_IF	

1:

	write8(_byHardwareAddress, IOCON, 8); //enable hardware addressing

	write8(_byHardwareAddress, GPIOA, 0); //turn on port A

	write8(_byHardwareAddress, IODIRA, 0); //set port A as an output

	write8(_byHardwareAddress, IODIRB, 16#FF); // set port B as an input

	write8(_byHardwareAddress, GPPUB, 16#FF);	// turn on port B pullups

	_iState := 10;

END_CASE

</xhtml>

          </ST>

        </body>

        <addData>

          <data name="http://www.3s-software.com/plcopenxml/method" handleUnknown="implementation">

            <Method name="Initialize">

              <interface>

                <returnType>

                  <UDINT />

                </returnType>

                <inputVars>

                  <variable name="wModuleType">

                    <type>

                      <UINT />

                    </type>

                  </variable>

                  <variable name="dwInstance">

                    <type>

                      <UDINT />

                    </type>

                  </variable>

                  <variable name="pConnector">

                    <type>

                      <pointer>

                        <baseType>

                          <derived name="IoConfigConnector" />

                        </baseType>

                      </pointer>

                    </type>

                  </variable>

                </inputVars>

                <localVars>

                  <variable name="pParam">

                    <type>

                      <pointer>

                        <baseType>

                          <derived name="IoConfigParameter" />

                        </baseType>

                      </pointer>

                    </type>

                  </variable>

                  <variable name="udiResult">

                    <type>

                      <UDINT />

                    </type>

                  </variable>

                </localVars>

              </interface>

              <body>

                <ST>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml">SUPER^.Initialize(wModuleType, dwInstance, pConnector);



pParam := ConfigGetParameter(_pConnector, 1);

IF pParam &lt;&gt; 0 THEN

	_byHardwareAddress := IoStandard.ConfigGetParameterValueByte(pParam, ADR(udiResult));

END_IF



</xhtml>

                </ST>

              </body>

              <addData />

            </Method>

          </data>

          <data name="http://www.3s-software.com/plcopenxml/method" handleUnknown="implementation">

            <Method name="BeforeWriteOutputs">

              <interface>

                <returnType>

                  <INT />

                </returnType>

                <localVars>

                  <variable name="i">

                    <type>

                      <USINT />

                    </type>

                  </variable>

                </localVars>

              </interface>

              <body>

                <ST>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml">SUPER^.BeforeWriteOutputs();



IF _iState = 10 THEN

	write8(_byHardwareAddress, GCL_PIFace.OUTPUT_PORT, byOut);

END_IF</xhtml>

                </ST>

              </body>

              <addData />

            </Method>

          </data>

          <data name="http://www.3s-software.com/plcopenxml/method" handleUnknown="implementation">

            <Method name="AfterReadInputs">

              <interface>

                <returnType>

                  <INT />

                </returnType>

                <localVars>

                  <variable name="aby">

                    <type>

                      <array>

                        <dimension lower="0" upper="13" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </array>

                    </type>

                  </variable>

                </localVars>

              </interface>

              <body>

                <ST>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml">SUPER^.AfterReadInputs();



IF _iState = 10 THEN

	byIn := NOT read8(_byHardwareAddress, GCL_PIFace.INPUT_PORT);

END_IF

</xhtml>

                </ST>

              </body>

              <addData />

            </Method>

          </data>

          <data name="http://www.3s-software.com/plcopenxml/method" handleUnknown="implementation">

            <Method name="read8">

              <interface>

                <returnType>

                  <BYTE />

                </returnType>

                <inputVars>

                  <variable name="byHardwareAddress">

                    <type>

                      <subrangeSigned>

                        <range lower="0" upper="7" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </subrangeSigned>

                    </type>

                    <documentation>

                      <xhtml xmlns="http://www.w3.org/1999/xhtml"> hardware address </xhtml>

                    </documentation>

                  </variable>

                  <variable name="byPort">

                    <type>

                      <BYTE />

                    </type>

                    <documentation>

                      <xhtml xmlns="http://www.w3.org/1999/xhtml"> port number to read </xhtml>

                    </documentation>

                  </variable>

                </inputVars>

                <localVars>

                  <variable name="abyTxBuffer">

                    <type>

                      <array>

                        <dimension lower="0" upper="2" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </array>

                    </type>

                  </variable>

                  <variable name="abyRxBuffer">

                    <type>

                      <array>

                        <dimension lower="0" upper="2" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </array>

                    </type>

                  </variable>

                </localVars>

                <documentation>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml"> This method is used to read the data byte of one port using the following protocol:

 Byte0: 16#41 + hardware address

 Byte1: Port

 Byte2: 16#FF 

 return value: data content</xhtml>

                </documentation>

              </interface>

              <body>

                <ST>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml">abyTxBuffer[0] := 16#40 + SHL(byHardwareAddress, 1) + 1; //SPI_READ_CMD;

abyTxBuffer[1] := byPort;

abyTxBuffer[2] := 16#FF;



IF transfer(pabyTxBuffer:=ADR(abyTxBuffer) , pabyRxBuffer:=ADR(abyRxBuffer) , udiLen:=3 , uiDelayus:=5 ) THEN

	read8 := abyRxBuffer[2];

ELSE

	_iState := 1000;

END_IF</xhtml>

                </ST>

              </body>

              <addData />

            </Method>

          </data>

          <data name="http://www.3s-software.com/plcopenxml/method" handleUnknown="implementation">

            <Method name="write8">

              <interface>

                <returnType>

                  <BOOL />

                </returnType>

                <inputVars>

                  <variable name="byHardwareAddress">

                    <type>

                      <subrangeSigned>

                        <range lower="0" upper="7" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </subrangeSigned>

                    </type>

                    <documentation>

                      <xhtml xmlns="http://www.w3.org/1999/xhtml"> hardware address </xhtml>

                    </documentation>

                  </variable>

                  <variable name="byPort">

                    <type>

                      <BYTE />

                    </type>

                    <documentation>

                      <xhtml xmlns="http://www.w3.org/1999/xhtml"> port number to read </xhtml>

                    </documentation>

                  </variable>

                  <variable name="byValue">

                    <type>

                      <BYTE />

                    </type>

                    <documentation>

                      <xhtml xmlns="http://www.w3.org/1999/xhtml"> value to write </xhtml>

                    </documentation>

                  </variable>

                </inputVars>

                <localVars>

                  <variable name="abyTxBuffer">

                    <type>

                      <array>

                        <dimension lower="0" upper="2" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </array>

                    </type>

                  </variable>

                  <variable name="abyRxBuffer">

                    <type>

                      <array>

                        <dimension lower="0" upper="2" />

                        <baseType>

                          <BYTE />

                        </baseType>

                      </array>

                    </type>

                  </variable>

                </localVars>

                <documentation>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml"> This method is used to write a data byte into a port using the following protocol:

 Byte0: 16#41 + hardware address

 Byte1: Port

 Byte2: Value 

 return value: TRUE if successful</xhtml>

                </documentation>

              </interface>

              <body>

                <ST>

                  <xhtml xmlns="http://www.w3.org/1999/xhtml">abyTxBuffer[0] := 16#40 + SHL(byHardwareAddress, 1); //SPI_WRITE_CMD;

abyTxBuffer[1] := byPort;

abyTxBuffer[2] := byValue;



write8 := transfer(pabyTxBuffer:=ADR(abyTxBuffer) , pabyRxBuffer:=ADR(abyRxBuffer) , udiLen:=3 , uiDelayus:=5 );



IF NOT write8 THEN

	_iState := 1000;

END_IF</xhtml>

                </ST>

              </body>

              <addData />

            </Method>

          </data>

        </addData>

      </pou>

    </pous>

  </types>

  <instances>

    <configurations />

  </instances>

  <addData>

    <data name="http://www.3s-software.com/plcopenxml/globalvars" handleUnknown="implementation">

      <globalVars name="GCL_PIFace" constant="true">

        <variable name="OUTPUT_PORT">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#12" />

          </initialValue>

        </variable>

        <variable name="INPUT_PORT">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#13" />

          </initialValue>

        </variable>

        <variable name="IOCON">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#A" />

          </initialValue>

        </variable>

        <variable name="GPIOA">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#12" />

          </initialValue>

        </variable>

        <variable name="GPIOB">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#13" />

          </initialValue>

        </variable>

        <variable name="GPPUB">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#D" />

          </initialValue>

        </variable>

        <variable name="IODIRA">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#0" />

          </initialValue>

        </variable>

        <variable name="IODIRB">

          <type>

            <USINT />

          </type>

          <initialValue>

            <simpleValue value="16#1" />

          </initialValue>

        </variable>

      </globalVars>

    </data>

    <data name="http://www.3s-software.com/plcopenxml/libraries" handleUnknown="implementation">

      <Libraries>

        <Library Name="#CAA Types" Namespace="CAA" HideWhenReferencedAsDependency="false" PublishSymbolsInContainer="false" SystemLibrary="false" LinkAllContent="false" DefaultResolution="CAA Types Extern, * (CAA Technical Workgroup)" />

        <Library Name="#Standard" Namespace="Standard" HideWhenReferencedAsDependency="false" PublishSymbolsInContainer="false" SystemLibrary="false" LinkAllContent="false" DefaultResolution="Standard, * (System)" />

        <Library Name="SysTypes Interfaces, * (System)" Namespace="SysTypes" HideWhenReferencedAsDependency="false" PublishSymbolsInContainer="false" SystemLibrary="false" LinkAllContent="false" />

        <Library Name="#IoStandard" Namespace="IoStandard" HideWhenReferencedAsDependency="false" PublishSymbolsInContainer="false" SystemLibrary="false" LinkAllContent="false" DefaultResolution="IoStandard, * (System)" />

        <Library Name="#Raspberry Pi Peripherals" Namespace="Raspi" HideWhenReferencedAsDependency="false" PublishSymbolsInContainer="false" SystemLibrary="false" LinkAllContent="false" DefaultResolution="Raspberry Pi Peripherals, * (3S - Smart Software Solutions GmbH)" />

        <addData />

      </Libraries>

    </data>

  </addData>

</project>