Help me solve some LPC1768 UART programming problems

Code C - [expand]
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void Uart0Init(uint32_t BaudRate)
{
    uint32_t uartclk = 0,pclk = 0;
 
    LPC_PINCON->PINSEL0 &= ~0xF0; // configure P0.2 and P0.3 as RXD-0 and TXD-0 Pins
    LPC_PINCON->PINSEL0 |= 0x50;
    // read the clock division assigned to UART0 peripheral
    uartclk = (LPC_SC->PCLKSEL0 >> 6) & 0x03;
 
    switch (uartclk)
    {
    case 0x01:
        pclk = SystemCoreClock;
        break;
    case 0x02:
        pclk = SystemCoreClock / 2;
        break;
    case 0x03:
        pclk = SystemCoreClock / 8;
        break;
    case 0x00:
    default:
        pclk = SystemCoreClock / 4;
        break;
    }
    // Configure the Line Control Register
    // Also set the Divisor Latch Access Bit
    LPC_UART0->LCR = 0x83;
    pclk = pclk / (16 * BaudRate);
    LPC_UART0->DLM = pclk / 256;
    LPC_UART0->DLL = pclk % 256;
    LPC_UART0->FCR = 0x07;
    LPC_UART0->LCR = 0x03;
    LPC_UART0->IER = 0x00;
}

Code C - [expand]
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int main(void)
{
    uint32_t i=0;
    SystemInit();
    Uart0Init(9600);
    while(1)
    {
        LPC_UART0->THR = 'T';
        while (LPC_UART0->LSR & 0x20 );
        for(i=0;i<0xffff;i++);
    }
}