There is no errors until .axf file, I'm not getting what is the error. Please help me out.
void DisplayBITStatus(); Timer.c: 5 warnings, 0 errors ".\QRSAMController.axf" - 1 Error(s), 39 Warning(s). Target not created
There's really no magic involved, look at what the ERROR message related to this is complaining about, and fix that.
If it can't open the files because you have them open somewhere else, or you are referencing a symbol that doesn't exist in any other files you have provided in the project.