Using Digole library from last year, I can specify UART mode and Wire library is not used, so it does not take up resources. However The new Digole Library from this year requires the Wire library even though I specify  #define _Digole_Serial_UART_ .

This is a problem because Wire uses so much storage that strange behavior happens, and I can not use a large array that I need.

 You can modify the lib and remove all code related with I2C port, then you don't need Wire.h