topic TFT display controller in Kinetics K70 peocessor in Kinetis Microcontrollers

TFT display controller in Kinetics K70 peocessor

khizerjan — Fri, 14 Dec 2012 14:44:08 GMT

Dear All,

I am very new to this field and i have n o idea what to do. Need your guidance for the beginner.

Actually i am trying to develop a 24" TFT display controller using K70 and i don't know where to start. How i can evaluate the internal graphic controller for TFT display using K70.

Please guide me, I am very new here..

Thanks

Re: TFT display controller in Kinetics K70 peocessor

LuisCasado — Fri, 14 Dec 2012 14:52:13 GMT

Hello,

You can use TWR-LCD-RGB for a fast evaluation:

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=TWR-LCD-RGB&tid=m32TWR

Best Regards,

Luis

Re: TFT display controller in Kinetics K70 peocessor

khizerjan — Fri, 14 Dec 2012 15:16:18 GMT

Thanks for the quick reply.

could you please tell me about the basic steps to follow to develop a TFT

display controller using K70?

Thanks again,

On Fri, Dec 14, 2012 at 3:53 PM, Luis Casado

Re: TFT display controller in Kinetics K70 peocessor

LuisCasado — Fri, 14 Dec 2012 16:02:55 GMT

Hi,

What do you mean, software driver? You could use eGUI or the Sample Code package on web, it includes an example for managing the display.

Best regards,

Luis

Re: TFT display controller in Kinetics K70 peocessor

khizerjan — Mon, 17 Dec 2012 10:35:42 GMT

Hi Luis,

I need to use internal graphics controller from Freescale Kinetis K70

family of processor to control 2.4" TFT (without having embedded display

controller)display.

All, controlling should done by K70 graphic controller. Using internal

buffers and generation of Hsync, Vsync and Dotclock should be done in K70.

Please tell me how to proceed.

Thanks and Regards,

Jan

On Fri, Dec 14, 2012 at 5:04 PM, Luis Casado

Re: TFT display controller in Kinetics K70 peocessor

khizerjan — Mon, 17 Dec 2012 12:42:55 GMT

Hi Luis,

Can you suggest any 2.4" TFT LCD panel that is supported by K70. e.g whose

control signals and timing parameters comply with K70 LCDC?

Thanks and Regards

Re: TFT display controller in Kinetics K70 peocessor

LuisCasado — Mon, 17 Dec 2012 19:21:41 GMT

Hi Jan,

Have a look to the SC_120Mhz package.

https://www.freescale.com/webapp/Download?colCode=KINETIS_120MHZ_SC&prodCode=K70_120&appType=license&location=null&fpsp=1&Parent_nodeId=1326817898002720905982&Parent_pageType=product

You will find the project lcd_rev2 project and source code file lcdc.c

In that file you have the example of how to configure lcd in TWR-LCD-RGB (480x272 @24bpp), you will have to modify the registers for your display resolution, timing, etc. lcdc_init_screen() function.

If you display is 16bpp, the LCD pins are different than the used for 24bpp. Check the Reference Manual LCDC chapters for details.

Best Regards,

Luis

Re: TFT display controller in Kinetics K70 peocessor

khizerjan — Tue, 18 Dec 2012 11:47:09 GMT

Hi Luis,

Thanks a lot for your valuable answer.

There is one issue. I could not find any example how to communicate with

Micro SD card. Could you please mention something like basic code to get

the data from SD card.

Thanks again.

On Mon, Dec 17, 2012 at 8:22 PM, Luis Casado

Re: TFT display controller in Kinetics K70 peocessor

apanecatl — Tue, 18 Dec 2012 18:19:39 GMT

Hi Khizer, you can find a code example of SD card usage in the MQX 3.8 installation folder, since a file system needs to be implemented, the example was only developed using the MQX RTOS, this is the installation path:

C:\Program Files\Freescale\Freescale MQX 3.8\mfs\examples\sdcard

provided you have installed MQX, if that is not the case, you can download it from the following link:

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MQX&tab=Design_Tools_Tab

I also recommend you check the following App note on how to configure the K70 LCDC, it might clear up some of your doubts:

http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4588.pdf