I2c implementation between MCU and sensor

I would like to read temperature and humidity values from TI HDC2080 sensor when using STM32L0F4 MCU. Programming language is C and environment is CubeIDE. I downloaded sensor library from dev.ti which includes a file where MCU specific I2C functions have to be implemented (I attach a screenshot). Could you help me to create those functions? Where could I find examples or instructions for them? It would be better for me to use LL library functions instead of HAL.