Capacitive Touch Display 7" Parallel

Technical Support
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1

Hello all,

I recently buy a Capacitive Touch Display 7" Parallel from Toradex ( Capacitive Touch Display - 7 inch ). I am trying to use it with a Colibri IMX6 and a Colibri Evaluation Board. My understanding was that the screen is ready to use, just need to plug it to my Colibri Evaluation Board, but I can’t see anything displayed on the screen, it just flashing very quickly sometimes (I am not concerned by the touch function for the moment).
Do i need anything else to make it work?

It is working well with my VGA display.

Thanks in advance for your help.

RK.

2

Yes, you would need to configure resp. display resolution/timing as per the following article on our developer website.

BTW: Touch functionality would be described here.

3

Thank you for your reply, I have follow the different steps for IMX6 module :
I have set up the U-Boot environment variable “vidargs” from the Uboot command line :

setenv vidargs 'video=mxcfb0:dev=lcd,FusionF07A,if=RGB666
video=mxcfb1:off'
saveenv

Which should be the corresponding configuration, but nothing is displayed on the screen.
I don’t know what am missing, i have noticed that when U-boot is starting the following message is displayed :

auto-detected panel vga-rgb
Display: vga-rgb (640x480)

Best regards
RK

4

What exact versions of things are you actually talking about?

Did you double check the cabling is all correct and firm?

Does the backlight of the display get turned on at all?

5

My apology my screen was not plugged correctly. Everything is working well.
Thank you for your help
RK.

6

The BSP version is not yet clear to me. There should be an additional number after the 2.7b (e.g. 2.7b2 resp. 2.7.2). The console log file of the full boot sequence might also help identify the issue.