error: 'BUFFER_LENGTH' was not declared in this scope

[Krister-Johansson]

I get error: 'BUFFER_LENGTH' was not declared in this scope when I try to use this lib

[Pillar1989]

I hope you can clearly describe this problem so that we can better help you.

[A3yuu]

me too at
I2Cdev.cpp:282:54:, I2Cdev.cpp:430:62:
on M5 Atom Lite
jrowberg/i2cdevlib#330

[KAMRANRASOOL777]

I2Cdev library provided here is outdated and will not work for non-avr architectures for arduino (e.g. ESP32).
Update the I2Cdev.h and I2Cdev.cpp to latest. It will work. Here is the link.