how to resolve below warning: warning: L6329W: Pattern Modbus_Mapper.o(.constdata) only matches removed unused sections.
I am using Keil compiler for cortex M3 controller. plz explain with example/sample code as i m beginner in this concept.
To remove the warning it is very good to interpret the warning message and understand what is happening.
The warning message is telling you that a module only contains stuff that has been removed, so the module is empty.
Why has the stuff been removed? probably because it is not being referenced by anything or that whatever is referencing it has been optimized out.
So to get rid of your warning you must make sure that something that is present in your code is referencing something in that otherwise unused module.