Help GLCD port from 8051

I only needed the cursor display when I'm ask to input values via keyboard, it seems odd without the cursor, and the blinking is just aesthetic i thought it looks cool and the interrupt seems to be a good way of doing it.

finally figured out how to scroll sweeet.
this works for a 5x8 font, need to change the hard values to variables
to match the font size used.

Note: this is for 240x128 dots LCD, 16rows 30columns 8x8dots 16*8*30=3840
so you know which to change to match your's.

void scroll(void)
/**************************************************************/
{
    uint32_t i;
    // Row 15 is the end, this means we need to scroll up
    if (yStart >
=128)
    {
        // Move the current text chunk that makes up the screen
        // back in the buffer by a line
        for (i = 0; i < 3840; i++)
        {
                framebuffer[i] = framebuffer[i+240];

        }
        // The last line should now be blank. Do this by writing 0's
        for (i = 3600; i < 3840; i++)//120*30
        {
            framebuffer[i] = 0x00;
        }
        // The cursor should now be on the last line.
        yStart = 120;

    }
}

sounds sweet..

make a small video i wanna see scrolling thingy..

sounds sweet..

make a small video i wanna see scrolling thingy..

Ajay

me tooooooooooo

Hi all,
how have you connected your dsiplay to the LPC
have you used a level shifter from 3,3 to 5V or is it connected directly to the LPC port pins.

regards Tom

level shifter is not required!!!..

the pins (data/ctrl) are 3v3 compattible . By the way which LCD u plan to use??
:bye

Sorry guys for late reply, been busy. I was not able to take video of the scrolling, with t6963c scrolling does not look good since it causes ghosting I think that's the right term. I meant because it scrolls very fast the display is not as clear compared to when you scroll in a terminal.


tom_softi:
yes shyam is right I didn't use any level shifter, it depends on the lcd specs I guess. usually minimum turn on is 3.2v I think, and some of the LPC pins are 5v tolerant.

i am working on Mukund Deshmukh's code for KS0108 adapted from the 51 code.
i am attaching the code .
i am facing a strange problem.
i can see data on only one half of the LCD.
i interchanged CS1 and CS2 pins thus now i can see data on the other half.. but still unable to access both at a time.
hope somebody wud help me out!

shyam,
just curious, why is it that in glcd.h the defines for control pins are:

#define LCD_CS2		BIT(10)  /* Chip Select Col1-64   P0.10*/
#define LCD_CS1		BIT(28)  /* Chip Select Col64-128 P0.28 */
#define LCD_RW			BIT(31)  /* Read/Write  P031 */
#define LCD_DI			BIT(6)  /* Data/Instr. P0.06 */
#define LCD_E			BIT(26)  /* Enable P0.26 */
#define LCD_RST		BIT(27)  /* Enable P0.27 */

but when used in control it has 'G'

#define LCD_CONTROL	(uint32_t)(GLCD_CS1|GLCD_CS2|GLCD_RW|GLCD_DI|GLCD_E|GLCD_RESET)

edit:
never mind I just saw the lcdinit and I guess it doesnt matter.

u r right mhel...

but u can see in the code..


LCD_CONTROL is not used any where.. this is cause i have not started the cleaning job yet