/* Open 485 mode on the specified UART. 
The  */
void UART485Config(unsigned long ulBase, unsigned long ulBaud, unsigned long ul485Config, unsigned long ulUARTConfig)
/* Open 485 mode on the specified UART. 
The  */
void UART485Config(unsigned long ulBase, unsigned long ulBaud, unsigned long ul485Config, unsigned long ulUARTConfig)
{
    xASSERT(UARTBaseValid(ulBase));
    xUARTConfigSet(ulBase, ulBaud, ulUARTConfig);
    UARTEnable485(ulBase);
    xHWREG(ulBase + UART_ALT_CSR) &= 0xFFFFFF00;
    xHWREG(ulBase + UART_ALT_CSR) |= ul485Config;
}