Lpc2000

ok, what about this screen http://www.goldmine-elec-products.com/
prodinfo.asp?number=G13752





-- In lpc2000@yahoogroups.com, "unity0724" <unity0724@...> wrote:
>
> Umm...
> 
> This is a panel with LCD glass driver (shift register drivers)
> only. For 640x480, the data rate is:
>     640(H)*480(V)*50(Refresh rate)=15,360,000
> You need to clock data in at 15MHz clock rate for non- 
> multiplexed data lines (Color input lines).
> Question: Does the LPC2103 has enough speed??
> 
> You have to refresh LCD at min 50Hz as the glass panel 
> normally keep toggling it's substrate voltage (every VSync).
> 
> For testing purpose, May be you can try with... 
> (light only 320x240 of the panel, for quick testing) 
> 
> - HSync is normally tied to "latch clock" of the shift register
>   driver => shift in 320 bits/data and clock it once
> - VSync is normally tied to the line decoders and clear control of 
>   line counter.  Try Refresh 240 lines first 
>   => Toggles every 240 HSync pulses.
> 
> Hope it helps. LPC2103 do not have enough power, neither enough
> RAM/ROM size to drive the 640x480 LCD directly...
> Good luck...
> Regards
> 
> 
> --- In lpc2000@yahoogroups.com, "thal_munki" <octech@> wrote:
> >
> > I am attempting to link an ARM microcontroller (LPC2103) and a 
> color 
> > TFT LCD screen (LP104V2 , 640x480 , TTL interface). The screen's 
> > datasheet is found here: 
> www.larwe.com/technical/datasheets/lp104v2-w.
> > pdf 
> > The code I'm using to run the screen is shown below 
> > 
> > 
> > Code:	
> > 
> > 
> > #include <targets/LPC210x.h> 
> > 
> > //----------------------------------------------------------------
-
> ---
> > ------ 
> > long pixel_number=0;        //Horizontal position of scan 
> > long row_number=0;          //Verical position of scan 
> > long delay_variable=0; 
> > #define DCLK    0x00000004      //P0.2 
> > #define HSYNC   0x00000008   //P0.3 
> > #define VSYNC   0x00000010   //P0.4 
> > #define DTMG    0x00000020   //P0.5 
> > #define DATA    0x00000040   //P0.6 (This is blue data only) 
> > #define button  0x00008000      //P0.15 
> > //----------------------------------------------------------------
-
> ---
> > ------ 
> > 
> > 
> > static void 
> > ledInit() 
> > { 
> >   IODIR |= 0x04000000; 
> >   IOSET = 0x04000000; 
> > } 
> > 
> > static void 
> > ledOn(void) 
> > { 
> >   IOCLR = 0x04000000; 
> > } 
> > 
> > static void 
> > ledOff(void) 
> > { 
> >   IOSET = 0x04000000; 
> > } 
> > 
> > void 
> > delay(int d) 
> > {      
> >   for(; d; --d); 
> > } 
> > //----------------------------------------------------------------
-
> ---
> > 
> > void LCD_config(void){      //Configure GPIO for LP104v2 
> >       
> >         IODIR=0xFF;   //P0.0 : P0.7 set to outputs 
> >    IOCLR=0x00;   //P0.0 : P0.7 LOW 
> >    pixel_number=0; 
> >    row_number=0; 
> >    IOSET=HSYNC;   //H sync high 
> >    IOSET=VSYNC;   //V sync high 
> >         IOSET=DATA;     //Data high 
> > } 
> >     
> > void LCD_page(void){        //Scan a page into LP104v2 
> >     IOCLR=VSYNC;       //Lower V sync 
> >     for(delay_variable=0; delay_variable<3397; delay_variable++); 
> >                             //64uS delay 
> >     IOSET=VSYNC;       //V sync high 
> >     for(delay_variable=0; delay_variable<554347; 
> delay_variable++); 
> >                         //1.02mS delay 
> >     do{ 
> >         IOCLR=HSYNC;   //Lower H sync 
> >         for(delay_variable=0; delay_variable<200; 
> delay_variable++); 
> >                             //3.77uS delay 
> >         IOSET=HSYNC;   //H sync high 
> >         for(delay_variable=0; delay_variable<100; 
> delay_variable++); 
> >                             //1.89uS delay 
> >         IOSET=DTMG;    //DTMG high 
> >         do{ 
> >             IOSET=DCLK;    //Data clock high 
> >             
> >             IOCLR=DCLK;    //Data clock low 
> >             pixel_number++; //Increment pixel count 
> >         } while (pixel_number<639); 
> >         pixel_number=0; 
> >         for(delay_variable=0; delay_variable<49; 
> delay_variable++); 
> >                             //0.94uS delay 
> >         row_number++;  //Increment line number 
> >     } while (row_number<478); 
> >     for(delay_variable=0; delay_variable<190217; delay_variable); 
> >                             //0.35mS delay 
> >     row_number=0;  //Reset line counter 
> > } 
> > 
> > 
> > 
> > //----------------------------------------------------------------
-
> ---
> > ------ 
> > int 
> > main(void) 
> > { 
> > 
> >   MAMCR = 2; 
> >   ledInit(); 
> >   ledOn(); 
> >   delay(100000);  
> >   ledOff(); 
> >   delay(100000); 
> >   LCD_config(); 
> >   while (1) 
> >     { 
> >     LCD_page(); 
> >     } 
> >   return 0; 
> > } 
> > 
> > 	
> > 
> > 
> > I attached the data line to the Blue LSB on the LCD screen 
> > (Theoretically this will produce a dark blue when high). The only 
> > problem is that this is not happening. Nothing happens. I know the 
> ARM 
> > is running and the startup code is correct because it flashes the 
> > status LED as stated in the code, and I know the LCD is functional 
> > because for a fraction of a second it goes dark (this is not a 
> result 
> > of the ARM, it happens whenever power is applied to the screen. 
> Where 
> > have I gone wrong? help, anyone?
> >
>