Touch controller type on CFA480128E0-039TC EVE display

S

sgturner

New member
Hi,

We are trying to program and use the CFA480128E0-039TC (480x128 EVE with cap touch) using python. Using the Seeduino demo code as a guide we have successfully gotten the display running and are able to create simple images.

We are, now trying to get the touch going. Its not clear from the CFA480128E0-039TC datasheet what type of touch controller this EVE display has?. We assumed it was the GT911 as this is the controller used on the 480x128 with cap touch (CFAF480128A1-039TC), but experimentation with loading the GT911 config to the FT811 does not result in working touch. The touch does seem to work if we do no special init. Is the controller a FocalTech FT5316?

thanks!
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T

Trevin

Administrator
Hello,
The touch does seem to work if we do no special init. Is the controller a FocalTech FT5316?
Click to expand...
The PCBA uses a helper processor to translate the touch data from the GT911 on the 480x128 display to the default touch settings on the EVE processor which is why you're seeing that. This is mostly due to the fact that when these were first implemented with EVE chips, the touch compatibility was limited so this gave us more flexibility to use other touch controllers if needed. I'll put in a recommendation to clarify this in the EVE display datasheet.

I hope that helps!
 
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