Can anyone please share ILI9488 SPI tft display 320X480 resolution interfacing with stm8s sample code.

I am new to STM MCU and have started working with stm8s105k4. I have a 4 bit digital input and wants to know how can I read that 4 bit at once which is connected to PORTC.Below logic is very lengthy and not a good way to read inputs. Kindly help.if (...