tft lcd touch screen module interface?

[George]

looking at the LCD/touch unit in the 1st post, it has an SSD1289 controller, in section 2 of the SSD1289 controller datasheet , it notes both  parallel interface AND SPI interface

probably need to find a post on the unit to see how easy OR NOT it was to work with.

[cheerio]

I am pretty certain that the spi interface is not available.
My display has the same Controller and i was not able to get to the SPI pins. They are not available on the Flex Connector and the Controller itself is impossible to access w/o destroying it.

[George]

Here's a transistor interface for a 4 wire resistive touch screen for your reading pike
http://forum.allaboutcircuits.com/showthread.php?t=54635

[_pike]

Alright!!!!!!!! Today i will make a purchase of it.....I don't really care if the connection would be paraller....(Since now) So can you provide me a initialization of it?Do you have a video of your working lcd?

George really helpfull i will have it in mind for future projects with touchpad interface!!!!.

[cheerio]

i did not make a video yet. the init sequence is in the code.
CLEAR_LCD_...   ->   Set the ... Pin low
SET_LCD_...       ->   Set the ... Pin High



   PORTD = (DH>>8);
   PORTF = (DH&0xFF);

        -> Port D and F are 8 pins each. I set the Port D for the high 8bit and the Port F for the low 8bit of the 16bit word.


Lcd_Write_Com_Data(X , Y); -> Write data Y to Register Adress X

Lcd_Write_Com(X);   ->   Write command X

delay_ms(X) -> wait for X ms (you can tweak the wait time but it does not make a big difference in the init stuff)

there is no need for a flowchart.
Check the datasheet. You do not have to init all the registers as i write the default value to some of them. I do this because i was experimenting with other values before.


I have some functions for Drawing as well. But i have to put in some comments before i post them.


Please make sure you use 3.3V VCC the Data pins are NOT 5V tolerant afaik

[kam]

 
I'M WAITING THE FIRST ONE WHO WILL DEVELOP THE SERIAL TO PARALLEL INTERFACE...
 

Who will be the first and most complete - Place bets, AVR or PIC???

[cheerio]

dunno. but who will be the best?
CPLD/FPGA ^^
it should have a data buffer that can be filled and then highspeed send to the display. i think you can get the 50hz then ... if the display can handle it