Hi all, I tried the serial print demo which worked fine , but when I tried my own code with the same functions and headers included , then it starts printing special characters. Do I have to make changes to any other files in order to implement the code.

no you shouldn't need to. Special characters normally means the baud is wrong. Could you have changed that either on caravel or on your host?

Sir, could you please tell me what should be the actual baud rate.

Baud rate is fixed at 9600 assuming a 10MHz input clock.

Thank you sir, I have confirmed that mine is 9600 and looking further for errors in associated files.

It also bears noting that the format is one start bit, one stop bit, 8 data bits, and no parity.

Thank you sir, the issue is now solved. It was with uncommenting the defenitions. But something I noticed was that the print before the while loop is not actually printed. As the make monitor command is given it is shown only when a default key (not a,b,c) in the switch case is pressed.