Difference between revisions of "Component: IO Expander (PCF8575) (PCF8575) (General Input)"

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==Component Source Code==
 
==Component Source Code==
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Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_IOEXP_PCF8575.fcfx FC_Comp_Source_IOEXP_PCF8575.fcfx]
  
 
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_IOEXP_PCF8575.fcfx FC_Comp_Source_IOEXP_PCF8575.fcfx]
 
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_IOEXP_PCF8575.fcfx FC_Comp_Source_IOEXP_PCF8575.fcfx]
  
 
==Detailed description==
 
==Detailed description==
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==Examples==
 
==Examples==
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==Macro reference==
 
  
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadPort'''
 
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| colspan="2" | Reads the current input value of the I/O pins. 
 
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u16-icon.png]] - UINT
 
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
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|}
 
  
  
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''WritePort'''
 
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| colspan="2" | Writes an output value to the IO pins 
 
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| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
 
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| width="90%" | Value
 
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| colspan="2" | Value to write. Range 0-65535 
 
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
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|}
 
  
  
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==Macro reference==
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===Initialise===
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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===ReadPort===
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==Property reference==
 
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
 
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''
 
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| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
 
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| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | I²C Communications
 
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| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
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| width="90%" | Device Type
 
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| colspan="2" |  
 
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| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
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| width="90%" | External Address
 
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| colspan="2" | Selects the value of the three address pins for the MCP23S17. 
 
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| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
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| width="90%" | Channel
 
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| colspan="2" | Channel selection 
 
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| width="10%" align="center" | [[File:Fc9-type-7-icon.png]]
 
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| width="90%" | Stop Delay
 
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| colspan="2" | On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not  a 10ms delay between an I2C stop event and the next I2C start event.  Most modern microcontrollers will not have a problem so this property can be disabled to speed up the  I2C communications.  
 
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| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
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| width="90%" | Baud Select
 
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| colspan="2" | Baud rate option selector 
 
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| width="10%" align="center" | [[File:Fc9-type-14-icon.png]]
 
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| width="90%" | Baud Rate
 
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| colspan="2" | Baud rate to be used 
 
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| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
 
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| width="90%" | SDA
 
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| colspan="2" | Pin used for SDA (data signal) 
 
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| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
 
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| width="90%" | SCL
 
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| colspan="2" | Pin used for SCL (clock signal) 
 
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| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
 
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| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Simulation
 
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| width="10%" align="center" | [[File:Fc9-type-10-icon.png]]
 
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| width="90%" | Label
 
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| width="10%" align="center" | [[File:Fc9-type-7-icon.png]]
 
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| width="90%" | Scope Traces
 
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| colspan="2" | Selects if the scope traces are automatically generated or not 
 
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| width="10%" align="center" | [[File:Fc9-type-7-icon.png]]
 
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| width="90%" | Console Data
 
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| colspan="2" | Selects if the console data is automatically generated or not 
 
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| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
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| width="90%" | API
 
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|}==Macro reference==
 
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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===WritePort===
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
 
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| colspan="2" |  
 
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
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Latest revision as of 13:11, 7 February 2023

Author Matrix TSL
Version 1.0
Category General Input


IO Expander (PCF8575) component

Provides 16 digital input/output pins arranged into 8-bit ports using a I2C bus connection. Up to eight expanders can be connected to the same I2C peripheral by means of three address pins. Supports the PCF8575 device allowing up to 8 expanders to be connected to the same I2C bus.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_IOEXP_PCF8575.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_IOEXP_PCF8575.fcfx

Detailed description

No detailed description exists yet for this component

Examples

No additional examples







Macro reference

Initialise

Fc9-comp-macro.png Initialise
 
Fc9-void-icon.png - VOID Return


ReadPort

Fc9-comp-macro.png ReadPort
Reads the current input value of the I/O pins. 
Fc9-u16-icon.png - UINT Return


WritePort

Fc9-comp-macro.png WritePort
Writes an output value to the IO pins 
Fc9-u16-icon.png - UINT Value
Value to write. Range 0-65535 
Fc9-void-icon.png - VOID Return


Property reference

Fc9-prop-icon.png Properties
Fc9-conn-icon.png I²C Communications
Fc9-type-16-icon.png Device Type
 
Fc9-type-16-icon.png External Address
Selects the value of the three address pins for the MCP23S17. 
Fc9-type-16-icon.png Channel
Channel selection 
Fc9-type-7-icon.png Stop Delay
On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications.  
Fc9-type-16-icon.png Baud Select
Baud rate option selector 
Fc9-type-14-icon.png Baud Rate
Baud rate to be used 
Fc9-type-5-icon.png SDA
Pin used for SDA (data signal) 
Fc9-type-5-icon.png SCL
Pin used for SCL (clock signal) 
Fc9-conn-icon.png Simulation
Fc9-type-10-icon.png Label
 
Fc9-type-7-icon.png Scope Traces
Selects if the scope traces are automatically generated or not 
Fc9-type-7-icon.png Console Data
Selects if the console data is automatically generated or not 
Fc9-type-16-icon.png API
 
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