getting undefined symbol "data_handler(refered from main.o)" can any body help?

[kishor babu]

I am working on the twi_sensor example,when i compiled the code it is showing as  undefined symbol "data_handler(refered from main.o)", what are the changes i need to make to remove this error.

[Mttrinh]

Hi,

Which SDK are you using and have you modified anything in the example?