Using GT911 Touch Controller on STM32F746 Discovery

[SProg]

Hello,

Does anyone managed to connect GT911 Touch Controller on STM32F746 Discovery or similar board;

The demo project for STM32F746  [with TouchGFX] is using the FT5536.

[Martin KJELDSEN]

That's great :)

[Sahil Ahmad]

Hi @Martin KJELDSEN​ , I am also looking for same solution. Did you succeeded? If yes please share solution. I have another question, I am using cubeide 1.3 and F429 disco board, but not able to drive display, but in cubeide1.1, I was able to drive lcd, please help

[jackal13]

Hi Martin can you find it?

[jackal13]

I try the modify stm32f746 disco board for 7 inch tft.So first i remove the 4.3 inch screen and i connect the 7 inch screen which has got same pins.But touch controller is gt911.When i build the project touchgfx with stm32f746 disco board and change the resolution from 480x272 to 800x400 it already build it with ft5336.So my screen view ok but touch doesnt work.I think i have to add gt911 library.

1)But how?should i delete ft536 and add gt911 or should i change inside the ft5336?

2)when i check the oscilloscope signals that last 4 pins that stm32f746 screen connection (sda-scl-int-rst)should i see any square wave signal at SCL? i measure just 3.3 v directly.is it true?