2022-10-06 11:47 PM
Dear All,
I'm developing on STM32F746 Discovery kit and I need to change the FT5336 touch controller sensivity because I need to cover the display with plexiglass.
I'm developing the project with TouchGfx tool.
I tried to search some documentation but I can't find anythings about.
Does someone know how to do it?
Thank you very much
2022-10-11 08:28 AM
Hello RobertoF,
Very good question! Unfortunately I can't help much on this, it's not really related to TouchGFX Designer so my knowledge on this is limited. But I guess you'll need to modify the FT5336 touch controller driver and decrease the sensivity from there. Try to analyze the datasheet and see if you find relevant information about it. I also invite you to contact Focal Tech which is the fabricant of this display and ask them.
I've also found this documentation online which might be a help.
/Osman
2022-10-11 08:46 AM
Hi @Osman SOYKURT
I've already contacted Focal Tech but currently I don't have any reply.
2022-10-11 09:02 AM
Hi @Osman SOYKURT ,
I didn't find any official datasheet of the component.
I found only a datasheet (confidential) in the web, but into this there isn't any description about the registers.
I also find in ST community an applications note of similar device (the description of the registers seems to have a correspondence with the #define of the driver contained in the TouchGfx driver FC5336.h).
I tried to write the registers using the TS_IO_Write() function as in the code contained in the FC5336.c driver but then reading the same registers with the TS_IO_Read instruction, the values didn't change.
Thanks for your answer, I will try to search inside the application notes that you linked to me.
2023-02-23 07:08 AM
Hi Roberto.
I have the same problem, I have to detect trough a glass, but sensitivity is too low. I try to modify F5336 register address 0x80 , but no effect.
Have you made progress in your research ?
Best regards
Michel
2023-02-23 11:17 PM
Hi Michel,
Unfortunately no! Sorry but ST doesn't have a solution and Focal Tech hasn't sent me any answer.
Best regards
Roberto