Difference between revisions of "Component: Digital Potentiometer (MCP44XX) (Analog Output)"

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==Component Source Code==
 
==Component Source Code==
 +
 +
Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_MCP44xx_Digital_Pot.fcfx FC_Comp_Source_MCP44xx_Digital_Pot.fcfx]
  
 
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_MCP44xx_Digital_Pot.fcfx FC_Comp_Source_MCP44xx_Digital_Pot.fcfx]
 
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_MCP44xx_Digital_Pot.fcfx FC_Comp_Source_MCP44xx_Digital_Pot.fcfx]
  
 
==Detailed description==
 
==Detailed description==
 +
 +
 +
 +
 +
 +
  
  
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==Examples==
 
==Examples==
 +
 +
 +
 +
 +
 +
  
  
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''<span style="color:red;">No additional examples</span>''
 
''<span style="color:red;">No additional examples</span>''
 +
 +
 +
 +
 +
 +
 +
 +
 +
 +
  
  
 
==Macro reference==
 
==Macro reference==
  
 +
===DecrementWiper===
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
|-
 
|-
 
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''IncrementWiper'''
+
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''DecrementWiper'''
 
|-
 
|-
−
| colspan="2" | Increments a single volatile wiper value&nbsp;
+
| colspan="2" | Decrements a single volatile wiper value&nbsp;
 
|-
 
|-
 
|-
 
|-
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 +
===IncrementWiper===
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
|-
 
|-
 
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''DecrementWiper'''
+
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''IncrementWiper'''
 
|-
 
|-
−
| colspan="2" | Decrements a single volatile wiper value&nbsp;
+
| colspan="2" | Increments a single volatile wiper value&nbsp;
 
|-
 
|-
 
|-
 
|-
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 +
===Initialise===
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
|-
 
|-
 
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SetWiper'''
+
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
 
|-
 
|-
−
| colspan="2" | Sets the value of a single wiper&nbsp;
+
| colspan="2" | Startup the I2C peripheral ready for communications.&nbsp;
 
|-
 
|-
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
 
−
| width="90%" | Index
 
−
|-
 
−
| colspan="2" | Range: 0-3&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
 
−
| width="90%" | Value
 
−
|-
 
−
| colspan="2" | 129 Taps Range: 0-128 / 257 Taps Range: 0-256&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-bool-icon.png]] - BOOL
 
−
| width="90%" | MemoryType
 
−
|-
 
−
| colspan="2" | 0=Volatile, 1=Nonvolatile&nbsp;
 
 
|-
 
|-
 
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
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 +
===ReadAddress===
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
|-
 
|-
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−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
+
===SetWiper===
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''WriteAddress'''
 
−
|-
 
−
| colspan="2" | Writes a value to one of the registers on the device&nbsp;
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
 
−
| width="90%" | Address
 
−
|-
 
−
| colspan="2" | Range: 0-15&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u16-icon.png]] - UINT
 
−
| width="90%" | Value
 
−
|-
 
−
| colspan="2" | Range: 0-256&nbsp;
 
−
|-
 
−
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
−
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
−
|}
 
−
 
 
−
 
 
−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
 
−
|-
 
−
| colspan="2" | Startup the I2C peripheral ready for communications.&nbsp;
 
−
|-
 
−
|-
 
−
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
−
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
−
|}
 
−
 
 
−
 
 
−
 
 
−
 
 
−
==Property reference==
 
−
 
 
−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''
 
−
|-
 
−
|-
 
−
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
 
−
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | I2C Properties
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
−
| width="90%" | Channel
 
−
|-
 
−
| colspan="2" | Channel selection&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
 
−
| width="90%" | SDA
 
−
|-
 
−
| colspan="2" | Pin used for SDA (data signal)&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
 
−
| width="90%" | SCL
 
−
|-
 
−
| colspan="2" | Pin used for SCL (clock signal)&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
−
| width="90%" | Baud Select
 
−
|-
 
−
| colspan="2" | Baud rate option selector&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-14-icon.png]]
 
−
| width="90%" | Baud Rate
 
−
|-
 
−
| colspan="2" | Baud rate to be used&nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-7-icon.png]]
 
−
| width="90%" | Stop Delay
 
−
|-
 
−
| 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. &nbsp;
 
−
|-
 
−
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
 
−
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Device Properties
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
−
| width="90%" | Number of Taps
 
−
|-
 
−
| colspan="2" | &nbsp;
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
 
−
| width="90%" | Address Bits
 
−
|-
 
−
| colspan="2" | &nbsp;
 
−
|-
 
−
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
 
−
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Simulation
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-type-7-icon.png]]
 
−
| width="90%" | Simulate Comms
 
−
|-
 
−
| colspan="2" | &nbsp;
 
−
|}==Macro reference==
 
−
 
 
−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''IncrementWiper'''
 
−
|-
 
−
| colspan="2" | Increments a single volatile wiper value&nbsp;
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
 
−
| width="90%" | Index
 
−
|-
 
−
| colspan="2" | Range: 0-3&nbsp;
 
−
|-
 
−
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
−
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
−
|}
 
−
 
 
−
 
 
−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''DecrementWiper'''
 
−
|-
 
−
| colspan="2" | Decrements a single volatile wiper value&nbsp;
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
 
−
| width="90%" | Index
 
−
|-
 
−
| colspan="2" | Range: 0-3&nbsp;
 
−
|-
 
−
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
−
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
−
|}
 
−
 
 
−
 
 
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
|-
 
|-
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−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
+
===WriteAddress===
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadAddress'''
 
−
|-
 
−
| colspan="2" | Reads a value from one of the registers on the device&nbsp;
 
−
|-
 
−
|-
 
−
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
 
−
| width="90%" | Address
 
−
|-
 
−
| colspan="2" | Range: 0-15&nbsp;
 
−
|-
 
−
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u16-icon.png]] - UINT
 
−
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
−
|}
 
−
 
 
−
 
 
 
{| 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''
 
|}
 
|}
−
 
−
 
−
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
−
|-
 
−
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 
−
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
 
−
|-
 
−
| colspan="2" | Startup the I2C peripheral ready for communications.&nbsp;
 
−
|-
 
−
|-
 
−
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
 
−
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
−
|}
 
−
 
−
 
  
  

Latest revision as of 13:11, 7 February 2023

Author Matrix TSL
Version 1.0
Category Analog Output


Digital Potentiometer (MCP44XX) component

The MCP44XX device range supports 4 digital potentiometers or rheostat outputs. 129 or 257 possible output resistance values for each channel.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_MCP44xx_Digital_Pot.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_MCP44xx_Digital_Pot.fcfx

Detailed description

No detailed description exists yet for this component

Examples

No additional examples







Macro reference

DecrementWiper

Fc9-comp-macro.png DecrementWiper
Decrements a single volatile wiper value 
Fc9-u8-icon.png - BYTE Index
Range: 0-3 
Fc9-void-icon.png - VOID Return


IncrementWiper

Fc9-comp-macro.png IncrementWiper
Increments a single volatile wiper value 
Fc9-u8-icon.png - BYTE Index
Range: 0-3 
Fc9-void-icon.png - VOID Return


Initialise

Fc9-comp-macro.png Initialise
Startup the I2C peripheral ready for communications. 
Fc9-void-icon.png - VOID Return


ReadAddress

Fc9-comp-macro.png ReadAddress
Reads a value from one of the registers on the device 
Fc9-u8-icon.png - BYTE Address
Range: 0-15 
Fc9-u16-icon.png - UINT Return


SetWiper

Fc9-comp-macro.png SetWiper
Sets the value of a single wiper 
Fc9-u8-icon.png - BYTE Index
Range: 0-3 
Fc9-u16-icon.png - UINT Value
129 Taps Range: 0-128 / 257 Taps Range: 0-256 
Fc9-bool-icon.png - BOOL MemoryType
0=Volatile, 1=Nonvolatile 
Fc9-void-icon.png - VOID Return


WriteAddress

Fc9-comp-macro.png WriteAddress
Writes a value to one of the registers on the device 
Fc9-u8-icon.png - BYTE Address
Range: 0-15 
Fc9-u16-icon.png - UINT Value
Range: 0-256 
Fc9-void-icon.png - VOID Return


Property reference

Fc9-prop-icon.png Properties
Fc9-conn-icon.png I2C Properties
Fc9-type-16-icon.png Channel
Channel selection 
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-type-16-icon.png Baud Select
Baud rate option selector 
Fc9-type-14-icon.png Baud Rate
Baud rate to be used 
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-conn-icon.png Device Properties
Fc9-type-16-icon.png Number of Taps
 
Fc9-type-16-icon.png Address Bits
 
Fc9-conn-icon.png Simulation
Fc9-type-7-icon.png Simulate Comms
 
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