Author Topic: Image Alignment - 480x272 image on 800x480 TFT  (Read 77 times)

mike_s

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Image Alignment - 480x272 image on 800x480 TFT
« on: January 12, 2019, 06:09:24 PM »
Hi Everyone,

I'm just getting through some initial debugging on my board using an STM32H7, connected to the :  NHD-5.0-800480TF-ATXL-CTP
(800x480 TFT)

I'm using the STM32H7 built-in LTDC display controller... STM has sample code/etc for testing out the LCD screen, etc..

so their eval setup used a 480x272 LCD display, whereas I'm using this one above, 800x480..

so after setting up the params correctly, I can display their test image, but I would have expected for the image to have started at the left-side origin, but there is some blank space...

What I'm wondering is if this could happen from an I/O being wrong or shorted?  or would I see scrambled data if that was the case?

Ted_M

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Re: Image Alignment - 480x272 image on 800x480 TFT
« Reply #1 on: January 16, 2019, 11:36:23 AM »
Hi Mike,

I have sent you an email with a recommendation to compare the RGB timings in the example code you're using with the RGB timing values in our 5" TFT's datasheet as a starting point.
Let us know if this resolves the issue.

Best Regards,

 

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