Difference between revisions of "Unit TFT Framebuffer"
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| − | | <code>TTFTFramebufferWriteMemory = function(Framebuffer:PTFTFramebuffer; Address | + | | <code>TTFTFramebufferWriteMemory = function(Framebuffer:PTFTFramebuffer; Address:PtrUInt; Size:LongWord):LongWord;</code> |
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| − | <pre style="border: 0; padding-bottom:0px;">function TFTFramebufferCommit(Framebuffer:PFramebufferDevice; Address | + | <pre style="border: 0; padding-bottom:0px;">function TFTFramebufferCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;</pre> |
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Implementation of FramebufferDeviceCommit API for TFT Framebuffer</div> | <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Implementation of FramebufferDeviceCommit API for TFT Framebuffer</div> | ||
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Revision as of 06:45, 15 June 2021
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Contents
[hide]Description
Ultibo TFT Framebuffer driver library unit
This is a generic framebuffer device support unit for SPI based TFT screens using common chipsets.
This unit implements the shared functionality that is common to all devices and provides a set of functions that device specific drivers must implement. For each supported device a driver unit is required that implements the SPI communications to initialize the device, setup resolution and color depth as well as refreshing the framebuffer data to the device memory on change.
The resulting device created by the combination of this unit and a device specific driver is registered with Ultibo as a framebuffer device that can be accessed using all of the standard framebuffer API functions.
For examples of drivers that use this support unit see the HX8357D and ILI9340 units.
Constants
TFT_FRAMEBUFFER_*
Type definitions
TFT framebuffer initialize
TTFTFramebufferInitialize = function(Framebuffer:PTFTFramebuffer; Defaults:PFramebufferProperties):LongWord;
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TFT framebuffer deinitialize
TTFTFramebufferDeinitialize = function(Framebuffer:PTFTFramebuffer):LongWord;
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TFT framebuffer get defaults
TTFTFramebufferGetDefaults = function(Framebuffer:PTFTFramebuffer; Properties,Defaults:PFramebufferProperties):LongWord;
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TFT framebuffer set write address
TTFTFramebufferSetWriteAddress = function(Framebuffer:PTFTFramebuffer; X1,Y1,X2,Y2:LongWord):LongWord;
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TFT framebuffer write memory
TTFTFramebufferWriteMemory = function(Framebuffer:PTFTFramebuffer; Address:PtrUInt; Size:LongWord):LongWord;
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TFT framebuffer device
Public variables
None defined
Function declarations
TFT framebuffer functions
function TFTFramebufferAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
function TFTFramebufferRelease(Framebuffer:PFramebufferDevice):LongWord;
function TFTFramebufferMark(Framebuffer:PFramebufferDevice; X,Y,Width,Height,Flags:LongWord):LongWord;
function TFTFramebufferCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;
function TFTFramebufferSetProperties(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
procedure TFTFramebufferUpdateDisplay(Framebuffer:PTFTFramebuffer);
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