Where is the MCU pin configuration file located?

Description

What MCU/Processor/Board and compiler are you using?

STM32F412ZET6 / Keil + CubeMX / ST7920 & SSD1963

What do you want to achieve?

Hello, I am a beginner developer. I got to know LittlevGL while studying TFT-LCD.
I want to use LittlevGL. But I can’t find a file with a pin configuration.
I downloaded the code from the demo version and opened it all, but I couldn’t find it.
Where on earth can I define my MCU hardware pins?

What have you tried so far?

I downloaded and opened the demo code for the LittlevGL site. However, the file defined for the pin configuration could not be found.

Code to reproduce

Add the relevant code snippets here.

The code block(s) should be between ```c and ``` tags:

/*You code here*/

Screenshot and/or video

If possible, add screenshots and/or videos about the current state.

Maybe you’re looking for the drivers in the lv_drivers repository.

My reply is late, but thank you very much! You have been a great help to me.