Hi
Are you using MQX RTOS?... then,
1. go to installed MQX directory/config/yourBoard
2. open userconfig.h, enable BSPCFG_ENABLE_ITTYA and rebuild the BSP library.
3. In your code,
MQX_FILE_PTR serPort = fopen("ittya:", NULL);
to initialize UART0.
4. then write( serPort, "Hello", 5); will send "Hello" via. serial port.