Hi Kamala,

The problem is with your trouble shooting skills. Your code is allright.

1-Never run your code on "untested hardware".

2-Check the connections for internal / external code access, and other tie_ups according to the data sheet.

3-Always keep a test code handy with you. This can be as simple as a flasher at around 1Hz. This will tell you that your micro is running as well as the delay is visible for testing. (You would not need a scope at many instances).

4-forget the initializations if you have not enabled the interrupts.

Good Luck

Simon

PS: You should at least come back and tell us all what happened??