Debug messages can cause the MCU stuck

[xpalaa00]

Due to possibility that printing of error messages can stuck program flow it is better to add choice to enable or disable this messages according to needs of user/programmer of the library.

[coelner]

yep, this library is blocking. Try this instead: https://github.com/Starmbi/hp_BH1750

you can try this: https://github.com/coelner/BH1750/tree/serialpointer
but I have little spare time to look into this