ADC for Raspberry Pi (STM32F030) - connecting with cables

Hi

I have for my project 8-Channel 12-Bit ADC for Raspberry Pi (STM32F030) and want to connect it to the old Raspberry Pi 1 B with cables (as this old RPi has shorter GPIO connector so I cannot connect it as a “Pi Hat”)

The Pi that I have and want to use with ADC:
https://botland.com.pl/pl/moduly-raspberry-pi-2-b-a/972-raspberry-pi-model-b-512mb-ram.html

The ADC - STM32F030:
https://www.seeedstudio.com/8-Channel-12-Bit-ADC-for-Raspberry-Pi-STM32F030.html

Is it possible, does someone maybe know which GPIOs are used by STM32F030 to communicate with RPi? I couldnt find it in the documentation.

BR

@kris299 Sorry, STM32F030 is solidified on the program, and user secondary development is not recommended.