The project use the autogenerated files from the STM32CubeMX (lora_fromioc_RAK3172.ioc) and replaced the files on LoRAWAN/Target with the files provided by Rakwireless for Low Level Development
The SI7021 library is STM32 HAL libraries
STM32_Programmer_CLI -c port=SWD -w Release/lora_fromioc_RAK3172.bin 0x08000000