Difference between revisions of "Component: Touch Screen (XPT2046) (Graphical Library)"

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Low level routines for controlling or interacting with the XPT2046 touch screen controller IC found on a lot of common low cost resistive touch screen products.
 
Low level routines for controlling or interacting with the XPT2046 touch screen controller IC found on a lot of common low cost resistive touch screen products.
  
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==Component Source Code==
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==Version information==
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Library Version, Component Version, Date, Author, Info
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12, 1.0, 26-07-24, BR, Removed ghost greay square connection line
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13, 13.0, 20-02-25, MW, Sample sensor now retuns the pressure value instead 0 or 1
  
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Please click here for the component source code: [https://www.flowcode.co.uk/wikicopy/componentsource/FC_Comp_Source_TouchScreen_XPT2046.fcfx FC_Comp_Source_TouchScreen_XPT2046.fcfx]
 
  
 
==Detailed description==
 
==Detailed description==
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==Examples==
 
==Examples==
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Example using the XPT2046 touchscreen driver IC with a 4.3" TFT Display using the SSD1963 Graphical LCD Controller.
 
Example using the XPT2046 touchscreen driver IC with a 4.3" TFT Display using the SSD1963 Graphical LCD Controller.
 
{{Fcfile|GLCD4.3_Touch.fcfx|GLCD 4.3 Touch}}
 
{{Fcfile|GLCD4.3_Touch.fcfx|GLCD 4.3 Touch}}
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Example using the XPT2046 touchscreen driver IC with a 7" TFT Display using the SSD1963 Graphical LCD Controller.
 
Example using the XPT2046 touchscreen driver IC with a 7" TFT Display using the SSD1963 Graphical LCD Controller.
 
{{Fcfile|GLCD7_Touch.fcfx|GLCD 7 Touch}}
 
{{Fcfile|GLCD7_Touch.fcfx|GLCD 7 Touch}}
  
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==Downloadable macro reference==
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==Macro reference==
  
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===Initialise===
 
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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;" | '''SampleSensor'''
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
 
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| colspan="2" | Reads the touch controller and returns true if there is currently a touch in progress. The touch coordinates can be read using the ReadCoord macro. Return 0 = No Touch, 1 = Touch in progress 
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| colspan="2" | Activates the SPI peripheral and claims control over the I/O pins. 
 
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
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| 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''
 
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
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===ReadCoord===
 
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===SampleSensor===
 
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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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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SampleSensor'''
 
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| colspan="2" | Activates the SPI peripheral and claims control over the I/O pins. 
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| colspan="2" | Reads the touch controller and returnsthe pressure value of  touch in progress. The touch coordinates can be read using the ReadCoord macro. Return 0 = No Touch,  >=1  Touch in progress 
 
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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="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
 
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 
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| colspan="2" | Allows the SPI communications to be simulated and piped through an API to real world hardware. 
 
| colspan="2" | Allows the SPI communications to be simulated and piped through an API to real world hardware. 
 
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==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_TouchScreen_XPT2046.fcfx FC_Comp_Source_TouchScreen_XPT2046.fcfx]
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Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_TouchScreen_XPT2046.fcfx FC_Comp_Source_TouchScreen_XPT2046.fcfx]

Latest revision as of 08:59, 9 June 2025

Author Matrix Ltd
Version 13.13
Category Graphical Library


Touch Screen (XPT2046) component

Low level routines for controlling or interacting with the XPT2046 touch screen controller IC found on a lot of common low cost resistive touch screen products.

Version information

Library Version, Component Version, Date, Author, Info
12, 1.0, 26-07-24, BR, Removed ghost greay square connection line
13, 13.0, 20-02-25, MW, Sample sensor now retuns the pressure value instead 0 or 1


Detailed description

No detailed description exists yet for this component

Examples

Example using the XPT2046 touchscreen driver IC with a 4.3" TFT Display using the SSD1963 Graphical LCD Controller. FC6 Icon.png GLCD 4.3 Touch

Example using the XPT2046 touchscreen driver IC with a 7" TFT Display using the SSD1963 Graphical LCD Controller. FC6 Icon.png GLCD 7 Touch

Macro reference

Initialise

Fc9-comp-macro.png Initialise
Activates the SPI peripheral and claims control over the I/O pins. 
Fc9-void-icon.png - VOID Return


ReadCoord

Fc9-comp-macro.png ReadCoord
Reads a coordinate returned from the Sample Sensor macro. Coordinate is scaled to the X/Y Pixel bounds specified. 
Fc9-u8-icon.png - BYTE Coordinate
0 = X, 1 = Y, 2 = Pressure 
Fc9-u16-icon.png - UINT Return


SampleSensor

Fc9-comp-macro.png SampleSensor
Reads the touch controller and returnsthe pressure value of touch in progress. The touch coordinates can be read using the ReadCoord macro. Return 0 = No Touch, >=1 Touch in progress 
Fc9-u8-icon.png - BYTE Return


Property reference

Fc9-prop-icon.png Properties
Fc9-type-16-icon.png LinkTo
 
Fc9-conn-icon.png Bus Settings
Fc9-type-16-icon.png Channel
SPI Channel selector 
Fc9-type-16-icon.png Prescale
Prescale option selector 
Fc9-conn-icon.png Connections
Fc9-type-5-icon.png MOSI
SPI Data Out Pin SDO - Also Known as Master Out Slave In (MOSI) when used in Master mode. 
Fc9-type-5-icon.png MISO
SPI Data In Pin SDI - Also Known as Master In Slave Out (MISO) when used in Master mode. 
Fc9-type-5-icon.png CLK
SPI Clock Pin CLK - The Clock signal is driven by the SPI master. 
Fc9-type-5-icon.png CS / SS
Chip Select / Slave Select Pin Master Mode: General purpose output pin used to select the remote SPI device. Slave Mode: Hardware chip select pin input used to select the SPI device.  
Fc9-conn-icon.png Configuration
Fc9-type-16-icon.png Analogue Mode
 
Fc9-type-21-icon.png X Pixel
 
Fc9-type-21-icon.png Y Pixel
 
Fc9-type-7-icon.png Flip X
 
Fc9-type-7-icon.png Flip Y
 
Fc9-conn-icon.png Simulation
Fc9-type-10-icon.png Label
Label used to identify the component on the panel. 
Fc9-type-7-icon.png Enable Interrupt
Allows the simulated display to fire an interrupt to allow you to action inputs as they happen. 
Fc9-type-22-icon.png Interrupt Macro
Macro called when the simulated display fires an interrupt. 
Fc9-type-7-icon.png Simulate Comms
Allows the SPI communications to be simulated and piped through an API to real world hardware. 

Component Source Code

Please click here to download the component source project: FC_Comp_Source_TouchScreen_XPT2046.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_TouchScreen_XPT2046.fcfx

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