lpc-2368-uart receiver problem

I have connected lpc 2368 to computer via uart-1
and using bioscom funtion in c++ i have made a programme to send and receive char through uart.my problem is that i can send char from lpc 2368 and able to receive it on pc but when i send it from pc i am unable to receive it on lpc 2368 board.

receiver code::

#include <LPC23xx.H> /* LPC23xx definitions */

#define UART1 /* Use UART 0 for printf */

/* If UART 0 is used for printf */
#ifdef UART0 #define UxFDR U0FDR #define UxLCR U0LCR #define UxDLL U0DLL #define UxDLM U0DLM #define UxLSR U0LSR #define UxTHR U0THR #define UxRBR U0RBR
/* If UART 1 is used for printf */
#elif defined(UART1) #define UxFDR U1FDR #define UxLCR U1LCR #define UxDLL U1DLL #define UxDLM U1DLM #define UxLSR U1LSR #define UxTHR U1THR #define UxRBR U1RBR
#endif

void init_serial (void) { /* Initialize Serial Interface */ #ifdef UART0 PINSEL0 |= 0x00000050; /* Enable TxD0 and RxD0 */ #elif defined (UART1) PINSEL0 |= 0x40000000; /* Enable TxD1 */ PINSEL1 |= 0x00000001; /* Enable RxD1 */ #endif UxFDR = 0; UxLCR = 0x83; UxDLL = 78; UxDLM = 0; UxLCR = 0x03;
}

int getkey (void) { /* Read character from Serial Port */

while (!(UxLSR & 0x01));//it just wait hear for infinite time???

return (UxRBR);
}

int main()
{

char c; init_serial(); PINSEL10=0;

FIO2DIR0=0xff; FIO2CLR0=0xFF;

c=getkey();

FIO2SET0=0x01;//never reach to this point???
while(1);

}

plz help me....