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Mini2440 header mod for 4.3" tft lcd

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imkaushal

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Hi all,

I am trying to use a NEC 4.3" TFT LCD with FriendlyArm Mini2440 dev board ( normally shipped with 3.5" or 7" TFT LCD).

The test code provided by FriendlyArm contains support for 3.5" and 7" TFTs but not for a 4.3" TFT LCD.:evil:

In the code directory, I found a file option.h which contains the configurations for different LCD sizes and types.

I want to add 4.3" TFT configuration in it. But can't understand the format.:roll:

The datasheet for 3.5" TFT LCD is here: NL2432HC22.pdf

And the config for 3.5" as defined in the option.h file is as below:
Code:
/**************************************************************
 NAME: option.h
 DESC: To measuure the USB download speed, the WDT is used.
       To measure up to large time, The WDT interrupt is used.
 HISTORY:
 Feb.20.2002:Shin, On Pil: Programming start
 Mar.25.2002:purnnamu: S3C2400X profile.c is ported for S3C2440X.
 **************************************************************/
 
#ifndef __OPTION_H__
#define __OPTION_H__

//--by Customer--

//#define LCD_N35
//#define LCD_L80
#define LCD_T35
//#define LCD_X35
//#define LCD_A70
//#define LCD_VGA1024768

//--end of by Customer--

#if defined(LCD_N35) + defined(LCD_L80) + defined(LCD_T35) + defined(LCD_A70) + defined(LCD_VGA1024768) + defined(LCD_X35)!= 1
#error Must define only one LCD type
#endif
	 
#if defined(LCD_N35)

#define LCD_WIDTH 240
#define LCD_HEIGHT 320
#define LCD_PIXCLOCK 4

#define LCD_RIGHT_MARGIN 36
#define LCD_LEFT_MARGIN 19
#define LCD_HSYNC_LEN 5

#define LCD_UPPER_MARGIN 1
#define LCD_LOWER_MARGIN 5
#define LCD_VSYNC_LEN 1
These macros are used in an init function inside another file, lcd.c as below:
Code:
rLCDCON1 = (LCD_PIXCLOCK << 8) | (3 <<  5) | (12 << 1);
   	rLCDCON2 = (LCD_UPPER_MARGIN << 24) | ((LCD_HEIGHT - 1) << 14) | (LCD_LOWER_MARGIN << 6) | (LCD_VSYNC_LEN << 0);
   	rLCDCON3 = (LCD_RIGHT_MARGIN << 19) | ((LCD_WIDTH  - 1) <<  8) | (LCD_LEFT_MARGIN << 0);
   	rLCDCON4 = (13 <<  8) | (LCD_HSYNC_LEN << 0);
The datasheet for S3C2440 is here.

I dont understand what values to define for:
1. LCD_PIXCLOCK
2. LCD_HSYNC_LEN
3. LCD_VSYNC_LEN

The test code can be found here.

The 4.3" TFT LCD datasheet is here.

Thanks in advance for any help!!! :grin:
Kaushal
 

imFIR

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well bro....what is the problem is the?....delhi mein airport palam is the! :?::?::?:
 

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