Hello felmue,
After downloaded it and unzipped.
I copied 3 files as below and then replace them.
- M5StamPLC.cpp at C:\Users\xxx\Documents\Arduino\libraries\M5StamPLC\src
- rx8130.cpp at C:\Users\xxx\Documents\Arduino\libraries\M5StamPLC\src\utils\rx8130
- rx8130.h at C:\Users\xxx\Documents\Arduino\libraries\M5StamPLC\src\utils\rx8130
It works well.
Thank you very much for your help.