/* Determines if there are any characters in the receive FIFO. */
tBoolean UARTCharsAvail(unsigned long ulBase)
/* Determines if there are any characters in the receive FIFO. */
tBoolean UARTCharsAvail(unsigned long ulBase)
{
    ASSERT(UARTBaseValid(ulBase));
    return((HWREG(ulBase + UART_O_FR) & UART_FR_RXFE) ? false : true);
}