TM4C129 Raster example

dear simon,

I am trying to  implement raster mode for the development board dk-tm4c129x .

kentec lcd display was integrated in LIDD mode. Is it possible to integrate that display in raster mode without any hardware changes except  assigning the timing structures and adding lcd commands.because ssd2119 controller was there in between.

kindly give suggestions in this

thanks in advance,

As far as I know this is not possible. The board has not all the necessary connection to operate the display in raster mode. You will have to connect a display externally to use it in raster mode.

thank you simon,

please clarify me this

hsync vsync dclk and OE are grounded on connector can i make use of them ?

after connecting above four signals to respective pins on 40 pin connector is it possible to use in  STN mode operation for raster mode  to the kentec display ?

how can i write ,display initialization for kentec display (DK-tm4c129x) in raster mode ?

Hi Sandeep,

Here is a schematic how to connect the Kentec display in raster mode:

 1563.K350QVG_ApplicationCircuit(SYNC)_02.pdf

You will also have to initialize this display driver via SPI interface, please see:

http://www.kentecdisplay.com/uploads/soft/Datasheet/SSD2119_1.4.pdf#page=1&zoom=auto,0,849

Hi simon thank you very much.

Meanwhile i connected  another display (480*272 T)  to  the board externally.. In fillscreen(); controller is getting hanged if i use maximum width and height .but if i try to reduce XMax , YMax it is working fine .

So i can initialise the kentec display with SPI (only calls in place of  LIDDwrite();)

i can use the display initialization as it is given for LIDD mode ??

sandeep ammula said:

after connecting above four signals to respective pins on 40 pin connector is it possible to use in  STN mode operation for raster mode  to the kentec display ?

 Hi, STN sound as a passive kind of LCD, the one on board is a TFT, drive of driverless are near the same but readability is more better on TFT. The demo board has a non driverless solution on it so to test simple glass raster scan mode you need rewire a new LCD to processor or simply buy ELEKTRONICA Board where all you need is in place for a RASTER SCAN on LCD glass.

http://www.mikroe.com/mikromedia/5/tiva/

 On other word a raster scan display has different interface with just timing control and RGB data lines, see this example:

http://tianma-europe.com/downloads/tm050rvhg01-00_preliminary-spec_v1.0.pdf

and family here:

http://tianma-europe.com/products/tftcolormodules/index.html

 At end of evaluation I decided not to use internal LCD due I need EPI sharing a memory area and I realized it get dedicated to LCD and memory only, another was the micro BGA chip carrier requiring an expensive and delicate pcb too fine line to meet an industrial application. Final decision was to use an IP core instead of good featured controller. LCD controller IMHO need be available also on a large QFP and or standard BGA.

sandeep ammula said:

So i can initialise the kentec display with SPI (only calls in place of  LIDDwrite();)

i can use the display initialization as it is given for LIDD mode ??

 Your display has LCD controller on board or just RGB interface?

 In case of SD2119 you need use parallel or SPI interface to program it correct display timing then activate transparent mode. If you need a driverless comlete rewiring is necessary and spi/i2c control touch screen (backlighting) than image.

Thanks to all 

I connected PH480*272T -006-i-q to dk -tm4c129x..as per mikromedia 5 schematics . I updated the timings as per display datasheet  I found some disturbance lines at top and bottom of display .and whenever i am calling fill screen it is getting hanged for full width and height. and also colours are not clear for red i am seeing orange . for green black..

Simon , 

I tried for implementing raster mode in