Hello Johnathan,
Kindly go through this youtuube video to interface ADS1115 module with arduino and matlab.
If you follow exact steps from video you will get some error regarding Wire library. So to solve that issue, just copy paste following files to your project folder before building s-function.
(I have attached in zip file)
Add #include"Wire.cpp" & #include"twi.c" in library section in s-function before building.
