LTC4162-L(DC2038A) SDK compile

Referring to the description of DC2038A, in order to build the same evaluation environment as DC2038A, ARDUINO of SAMD21 series was selected.

In order to make QuikEval recognize ARDUINO of LTC4162-L test board, I want to download the "DC2038A" firmware of LTC4162-L SDK to my ARDUINO through ARDUINO IDE (V1.8.9),

But when the IDE compiles, it prompts error "Comm_SMBus.h: no such file on directory".

Where can I download Comm_SMBus.h and Comm_SMBus.c files?