Difference between revisions of "Unit HD44780"

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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleDestroy(Console:PConsoleDevice):LongWord;</pre>
 
<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleDestroy(Console:PConsoleDevice):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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! '''Note'''
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| None documented
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'''HD44780 console functions'''
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleOpen(Console:PConsoleDevice):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleClose(Console:PConsoleDevice):LongWord;</pre>
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleClear(Console:PConsoleDevice; Color:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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| None documented
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleScroll(Console:PConsoleDevice; X1,Y1,X2,Y2,Count,Direction:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleDrawChar(Console:PConsoleDevice; Handle:TFontHandle; Ch:Char; X,Y,Forecolor,Backcolor:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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| None documented
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleDrawText(Console:PConsoleDevice; Handle:TFontHandle; const Text:String; X,Y,Forecolor,Backcolor,Len:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleDrawBlock(Console:PConsoleDevice; X1,Y1,X2,Y2,Color:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| None documented
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|}
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleDrawWindow(Console:PConsoleDevice; Handle:TWindowHandle):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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! '''Note'''
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| Caller must hold the Window lock
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<pre style="border: 0; padding-bottom:0px;">function HD44780ConsoleGetPosition(Console:PConsoleDevice; Position:LongWord; var X1,Y1,X2,Y2:LongWord):LongWord;</pre>
 
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Revision as of 00:38, 14 October 2016

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Description

The Hitachi HD44780 is a dot matrix liquid crystal display controller. It supports 5x8 or 5x10 characters and includes a 240 character font in ROM, 80 bytes of character RAM and 64 bytes of character generator RAM for custom characters.

The device support 4 bit or 8 bit modes, and has a range of standard functions for display clear, display on/off, cursor on/off, character blink, cursor shift etc.

This unit creates a Console device to represent the LCD and provides the standard console device functions (where appropriate) to draw text, clear the screen, scroll text and manage the cursor.

Currently only 4 bit mode is supported but extension to include 8 bit mode is possible with some additional setup and support functions.

Constants

To be documented

Type definitions

To be documented

Public variables

To be documented

Function declarations


HD44780 functions

[Expand] 
function HD44780ConsoleCreate(GPIO:PGPIODevice; const Name:String; Width,Height,RS,RW,EN,D4,D5,D6,D7:LongWord):PConsoleDevice;
Description: To be documented


[Expand] 
function HD44780ConsoleDestroy(Console:PConsoleDevice):LongWord;
Description: To be documented


HD44780 console functions

[Expand] 
function HD44780ConsoleOpen(Console:PConsoleDevice):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleClose(Console:PConsoleDevice):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleClear(Console:PConsoleDevice; Color:LongWord):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleScroll(Console:PConsoleDevice; X1,Y1,X2,Y2,Count,Direction:LongWord):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleDrawChar(Console:PConsoleDevice; Handle:TFontHandle; Ch:Char; X,Y,Forecolor,Backcolor:LongWord):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleDrawText(Console:PConsoleDevice; Handle:TFontHandle; const Text:String; X,Y,Forecolor,Backcolor,Len:LongWord):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleDrawBlock(Console:PConsoleDevice; X1,Y1,X2,Y2,Color:LongWord):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleDrawWindow(Console:PConsoleDevice; Handle:TWindowHandle):LongWord;
Description: To be documented


[Expand] 
function HD44780ConsoleGetPosition(Console:PConsoleDevice; Position:LongWord; var X1,Y1,X2,Y2:LongWord):LongWord;
Description: To be documented


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