Interfacing ARM9 with external hardware

Hi all
I am new to using the ARM9. I am trying to establish serial communication
between my mini2440 and a atmega328. I have programmed the atmega 328 to
switch on a LED  when it recieves a 'H' over serial. This program runs well
when the 'H' is sent from my pc... but i cant manage to do it from the
mini2440...
what should i do...
any help appreciated.

Cheers
Chinmay

Hi Chinmay Duvedi,

What serial port on mini2440 do you use ? 
Check if the COM configuration (buadrate, stop bits, etc) is the same for
both devices. Try to send a character from mini2440 to PC.

Regards,
   azzido