Difference between revisions of "Unit GoodixTouch"

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----
 
----
  
−
''To be documented''
+
 
 +
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
 +
<div style="font-size: 14px; padding-left: 12px;">'''Goodix specific constants''' <code> GOODIX_* </code></div>
 +
<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 +
{| class="wikitable" style="font-size: 14px; background: white;"
 +
|-
 +
| <code>GOODIX_TOUCH_DESCRIPTION = 'Goodix Touch Controller';</code>
 +
| style="width: 50%;"|Description of Goodix Touch device
 +
|-
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|colspan="2"|&nbsp;
 +
|-
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| <code>GOODIX_MAX_HEIGHT = 4096;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_MAX_WIDTH = 4096;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_INT_TRIGGER = 1;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_CONTACT_SIZE = 8;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_MAX_CONTACT_SIZE = 9;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_MAX_CONTACTS = 10;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_MAX_KEYS = 7;</code>
 +
| &nbsp;
 +
|-
 +
|colspan="2"|&nbsp;
 +
|-
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| <code>GOODIX_CONFIG_MIN_LENGTH = 186;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_CONFIG_911_LENGTH = 186;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_CONFIG_967_LENGTH = 228;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_CONFIG_GT9X_LENGTH = 240;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_CONFIG_MAX_LENGTH = 240;</code>
 +
| &nbsp;
 +
|-
 +
|}
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</div></div>
 +
<br />
 +
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
 +
<div style="font-size: 14px; padding-left: 12px;">'''Goodix I2C clock rate''' <code> GOODIX_I2C_* </code></div>
 +
<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
 +
|-
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| <code>GOODIX_I2C_RATE = 400000;</code>
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| style="width: 50%;"|Default I2C clock rate
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|-
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| <code>GOODIX_CONFIG_TIMEOUT = 3000;</code>
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| style="width: 50%;"|Timeout to wait for firmware ready
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|-
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|}
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</div></div>
 +
<br />
 +
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
 +
<div style="font-size: 14px; padding-left: 12px;">'''Goodix register commands''' <code> GOODIX_REG_* </code></div>
 +
<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 +
{| class="wikitable" style="font-size: 14px; background: white;"
 +
|-
 +
| <code>GOODIX_REG_COMMAND = $8040;</code>
 +
| style="width: 50%;"|&nbsp;
 +
|-
 +
| <code>GOODIX_CMD_SCREEN_OFF = $05;</code>
 +
| &nbsp;
 +
|-
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|colspan="2"|&nbsp;
 +
|-
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| <code>GOODIX_READ_COOR_ADDR = $814E;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_GT1X_REG_CONFIG_DATA = $8050;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_GT9X_REG_CONFIG_DATA = $8047;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_REG_ID = $8140;</code>
 +
| &nbsp;
 +
|-
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|colspan="2"|&nbsp;
 +
|-
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| <code>GOODIX_BUFFER_STATUS_READY = (1 shl 7);</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_HAVE_KEY = (1 shl 4);</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_BUFFER_STATUS_TIMEOUT = 20;</code>
 +
| &nbsp;
 +
|-
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|colspan="2"|&nbsp;
 +
|-
 +
| <code>GOODIX_ID_MAX_LEN = 4;</code>
 +
| &nbsp;
 +
|-
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|colspan="2"|&nbsp;
 +
|-
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| <code>GOODIX_RESOLUTION_OFFSET = 1;</code>
 +
| &nbsp;
 +
|-
 +
| <code>GOODIX_MAX_CONTACTS_OFFSET = 5;</code>
 +
| &nbsp;
 +
|-
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| <code>GOODIX_TRIGGER_OFFSET = 6;</code>
 +
| &nbsp;
 +
|-
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|colspan="2"|&nbsp;
 +
|-
 +
|colspan="2"|<code>GOODIX_IRQ_TRIGGERS:array[0..3] of LongWord = (GPIO_TRIGGER_RISING,GPIO_TRIGGER_FALLING,GPIO_TRIGGER_LOW,GPIO_TRIGGER_HIGH);</code>
 +
|-
 +
|}
 +
</div></div>
 +
<br />
  
 
=== Type definitions ===
 
=== Type definitions ===
 
----
 
----
  
−
''To be documented''
+
 
 +
'''Goodix touch'''
 +
 
 +
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
 +
<code>PGOODIXTouch = ^TGOODIXTouch;</code>
 +
 
 +
<code>TGOODIXTouch = record</code>
 +
<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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|colspan="2"|''Touch Properties''
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|-
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| <code>Touch:TTouchDevice;</code>
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| style="width: 50%;"|&nbsp;
 +
|-
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|colspan="2"|''I2C Properties''
 +
|-
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| <code>I2C:PI2CDevice;</code>
 +
| The I2C device this device is connected to
 +
|-
 +
| <code>Address:Word;</code>
 +
| The I2C address of the device
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|-
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|colspan="2"|''General Properties''
 +
|-
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| <code>IRQ:TGPIOInfo;</code>
 +
| The GPIO information for the IRQ line (Optional)
 +
|-
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| <code>RST:TGPIOInfo;</code>
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| The GPIO information for the Reset line (Optional)
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|-
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| <code>MaxX:Word;</code>
 +
| Maximum X value from current configuration
 +
|-
 +
| <code>MaxY:Word;</code>
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| Maximum Y value from current configuration
 +
|-
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| <code>Width:Word;</code>
 +
| Screen width value supplied during create
 +
|-
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| <code>Height:Word;</code>
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| Screen height value supplied during create
 +
|-
 +
| <code>MaxPoints:LongWord;</code>
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| Maximum touch points from current configuration
 +
|-
 +
| <code>LastKeys:LongWord;</code>
 +
| Keys reported in last input report
 +
|-
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| <code>LastPoints:LongWord;</code>
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| Points reported in last input report
 +
|-
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|colspan="2"|''Goodix Properties''
 +
|-
 +
| <code>Id:String;</code>
 +
| ID String for this device
 +
|-
 +
| <code>Version:Word;</code>
 +
| Version number for this device
 +
|-
 +
| <code>ConfigAddress:Word;</code>
 +
| Configuration data address
 +
|-
 +
| <code>ConfigLength:LongWord;</code>
 +
| Configuration data length in bytes
 +
|-
 +
| <code>ChecksumSize:LongWord;</code>
 +
| Configuration checksum size
 +
|-
 +
| <code>ContactSize:LongWord;</code>
 +
| Size of each contact point coordinate in touch data
 +
|-
 +
| <code>Configuration:array[0..GOODIX_CONFIG_MAX_LENGTH - 1] of Byte;</code>
 +
| &nbsp;
 +
|-
 +
| <code>KeyCodes:array[0..GOODIX_MAX_KEYS - 1] of Word;</code>
 +
| &nbsp;
 +
|-
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| <code>ScanCodes:array[0..GOODIX_MAX_KEYS - 1] of Word;</code>
 +
| &nbsp;
 +
|-
 +
| <code>SwapConfigXY:Boolean;</code>
 +
| If True swap the max X and Y values in the configuration
 +
|-
 +
| <code>SwapReportXY:Boolean;</code>
 +
| If True swap the X and Y values in the input report
 +
|-
 +
| <code>InvertReportX:Boolean;</code>
 +
| If True invert the X value in the input report
 +
|-
 +
| <code>InvertReportY:Boolean;</code>
 +
| If True invert the Y value in the input report
 +
|-
 +
| <code>ConfigFilename:String;</code>
 +
| The configuration filename to load during initialization
 +
|-
 +
| <code>ResetController:Boolean;</code>
 +
| If True reset the controller during initialization
 +
|-
 +
|}
 +
</div></div>
 +
 
 +
'''GOODIX point data'''
 +
 
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
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|-
 +
| <code>TGOODIXPointData = array[0..(2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS) - 1] of Byte;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
<br />
  
 
=== Public variables ===
 
=== Public variables ===
 
----
 
----
  
−
''To be documented''
+
 
 +
'''Goodix specific variables'''
 +
 
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
 +
|-
 +
| <code>GOODIX_SWAP_CONFIG_XY:Boolean;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
 +
|-
 +
| <code>GOODIX_SWAP_REPORT_XY:Boolean;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
 +
|-
 +
| <code>GOODIX_INVERT_REPORT_X:Boolean;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
 +
|-
 +
| <code>GOODIX_INVERT_REPORT_Y:Boolean;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
 +
|-
 +
| <code>GOODIX_LOAD_CONFIG_FILE:String;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
 +
|-
 +
| <code>GOODIX_RESET_CONTROLLER:Boolean;</code>
 +
| style="width: 40%;"|
 +
|-
 +
|}
 +
<br />
  
 
=== Function declarations ===
 
=== Function declarations ===
Line 138: Line 411:
 
! Note
 
! Note
 
| Not intended to be called directly by applications, use TouchDeviceUpdate instead.
 
| Not intended to be called directly by applications, use TouchDeviceUpdate instead.
−
|-
 
−
|}
 
−
</div></div>
 
−
<br />
 
−
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 
−
<pre style="border: 0; padding-bottom:0px;">procedure GOODIXTouchTimer(Touch:PGOODIXTouch);</pre>
 
−
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Touch device timer event handler for Goodix Touch device</div>
 
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 
−
{| class="wikitable" style="font-size: 14px; background: white;"
 
−
|-
 
−
! Note
 
−
| Not intended to be called directly by applications
 
 
|-
 
|-
 
|}
 
|}

Latest revision as of 03:25, 24 August 2022

Return to Unit Reference


Description

Goodix I2C Touchscreen Driver unit

The GOODIX I2C controllers are a range of capacitive touchscreen controllers that include multipoint touch support and are used by a variety of small LCD displays. The exact features and capability of each device can be found by checking the datasheets which can be obtained online.

This driver is compatible with the following devices: 

 goodix,gt1151
 goodix,gt5663
 goodix,gt5688
 goodix,gt911
 goodix,gt9110
 goodix,gt912
 goodix,gt9147
 goodix,gt917s
 goodix,gt927
 goodix,gt9271
 goodix,gt928
 goodix,gt9286
 goodix,gt967

Constants


[Expand]
Goodix specific constants GOODIX_*


[Expand]
Goodix I2C clock rate GOODIX_I2C_*


[Expand]
Goodix register commands GOODIX_REG_*


Type definitions


Goodix touch

[Expand]

PGOODIXTouch = ^TGOODIXTouch;

TGOODIXTouch = record

GOODIX point data

TGOODIXPointData = array[0..(2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS) - 1] of Byte;


Public variables


Goodix specific variables

GOODIX_SWAP_CONFIG_XY:Boolean;
GOODIX_SWAP_REPORT_XY:Boolean;
GOODIX_INVERT_REPORT_X:Boolean;
GOODIX_INVERT_REPORT_Y:Boolean;
GOODIX_LOAD_CONFIG_FILE:String;
GOODIX_RESET_CONTROLLER:Boolean;


Function declarations


Initialization functions

[Expand] 
procedure GOODIXInit;
Description: Initialize the Goodix Touch unit and parameters


Goodix functions

[Expand] 
function GOODIXTouchCreate(I2C:PI2CDevice; Address:Word; Width,Height:LongWord; IRQ,RST:PGPIOInfo):PTouchDevice;
Description: Create, register and start a new Goodix Touch device connected to the specified I2C device


[Expand] 
function GOODIXTouchDestroy(Touch:PTouchDevice):LongWord;
Description: Stop, deregister and destroy a Goodix Touch device created by this driver


Goodix touch functions

[Expand] 
function GOODIXTouchStart(Touch:PTouchDevice):LongWord;
Description: Implementation of TouchDeviceStart API for Goodix Touch device


[Expand] 
function GOODIXTouchStop(Touch:PTouchDevice):LongWord;
Description: Implementation of TouchDeviceStop API for Goodix Touch device


[Expand] 
function GOODIXTouchUpdate(Touch:PTouchDevice):LongWord;
Description: Implementation of TouchDeviceUpdate API for Goodix Touch device


[Expand] 
procedure GOODIXTouchCallback(Touch:PGOODIXTouch; Pin,Trigger:LongWord);
Description: Touch device event callback (Interrupt) handler for Goodix Touch device


Return to Unit Reference

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