How to calibrate touch screen in STM32MP1

Question

Hi ~ 

I am using STM32MP157F MPU with my custom board. 

Touch controller is TSC2007 with resistive touch screen. 

I am using Embedded Wizard to develop our GUI application instead of Weston. 

The ST wiki only describes how to calibrate touch in the weston environment. 

https://wiki.st.com/stm32mpu/wiki/How_to_calibrate_the_touchscreen

Do you have any experience to calibrate resistive touch screen  to use  Embedded Wizard? 

Thanks ~

 

Answer 1

Hello,

in ewconfig.h you can map the touch coordinates provided from the underlying system (or the touch driver) to GUI coordinates.

Typically, in a Linux environment the touch coordinates are already provided calibrated and the mapping from physical to logical coordinates is handled by the Linux touch driver.

Best regards,

Manfred.