*                                     ProbeRS232_RxTxISRHandler()
*
* Description: Handle Rx and Tx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*
* Note(s)    : (1) The VICAddr register MUST be written by the general IRQ handler which called
*                  this specific IRQ handler after this function returns.
*********************************************************************************************************
*/

void  ProbeRS232_RxTxISRHandler (void)
{
    volatile  CPU_INT08U  rx_data;
    volatile  CPU_INT08U  lsr;
    volatile  CPU_INT08U  iir;



#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_0)                /* ------------------------- UART0 ------------------------ */
    iir = U0IIR & 0x0F;
    while (iir != 1) {
        switch (iir) {
            case  2:                                            /* Transmitted character?                                   */
                 ProbeRS232_TxHandler();
                 break;

            case  4:                                            /* Received a character?                                    */
                 lsr     = U0LSR;
                 rx_data = U0RBR;
                 ProbeRS232_RxHandler(rx_data);                 /* Call the generic Rx handler                              */
                 break;

            default:
                 break;
        }
        iir = U0IIR & 0x0F;
    }
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)                /* ------------------------- UART1 ------------------------ */
    iir = U1IIR & 0x0F;
    while (iir != 1) {
        switch (iir) {
            case  2:                                            /* Transmitted character?                                   */
                 ProbeRS232_TxHandler();
                 break;

            case  4:                                            /* Received a character?                                    */
                 lsr     = U1LSR;
                 rx_data = U1RBR;
                 ProbeRS232_RxHandler(rx_data);                 /* Call the generic Rx handler                              */
                 break;

            default:
                 break;
        }
        iir = U1IIR & 0x0F;
    }
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)                /* ------------------------- UART2 ------------------------ */
    iir = U2IIR & 0x0F;
    while (iir != 1) {
        switch (iir) {
            case  2:                                            /* Transmitted character?                                   */
                 ProbeRS232_TxHandler();
                 break;

            case  4:                                            /* Received a character?                                    */
                 lsr     = U2LSR;
                 rx_data = U2RBR;
                 ProbeRS232_RxHandler(rx_data);                 /* Call the generic Rx handler                              */
                 break;

            default:
                 break;
        }
        iir = U2IIR & 0x0F;
    }
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)                /* ------------------------- UART3 ------------------------ */
    iir = U3IIR & 0x0F;
    while (iir != 1) {
        switch (iir) {
            case  2:                                            /* Transmitted character?                                   */
                 ProbeRS232_TxHandler();
                 break;

            case  4:                                            /* Received a character?                                    */
                 lsr     = U3LSR;
                 rx_data = U3RBR;
                 ProbeRS232_RxHandler(rx_data);                 /* Call the generic Rx handler                              */
                 break;

            default:
                 break;
        }
        iir = U3IIR & 0x0F;
    }
#endif
}


/*
*********************************************************************************************************
*                                    ProbeRS232_RxISRHandler()
*
* Description: Handle Rx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*
* Note(s)    : This function is empty because Rx interrupts are handled by ProbeRS232_RxTxISRHandler()
*********************************************************************************************************
*/

void  ProbeRS232_RxISRHandler (void)
{
}


/*
*********************************************************************************************************
*                                      ProbeRS232_RxIntDis()
*
* Description: Disable Rx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*********************************************************************************************************
*/

void  ProbeRS232_RxIntDis (void)
{
#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_0)
    U0IER &= ~DEF_BIT_00;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)
    U1IER &= ~DEF_BIT_00;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    U2IER &= ~DEF_BIT_00;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    U3IER &= ~DEF_BIT_00;
#endif
}


/*
*********************************************************************************************************
*                                      ProbeRS232_RxIntEn()
*
* Description: Enable Rx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*********************************************************************************************************
*/

void  ProbeRS232_RxIntEn (void)
{
#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_0)
    U0IER |= DEF_BIT_00;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)
    U1IER |= DEF_BIT_00;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    U2IER |= DEF_BIT_00;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    U3IER |= DEF_BIT_00;
#endif
}


/*
*********************************************************************************************************
*                                    ProbeRS232_TxISRHandler()
*
* Description: Handle Tx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*
* Note(s)    : This function is empty because Tx interrupts are handled by ProbeRS232_RxTxISRHandler()
*********************************************************************************************************
*/

void  ProbeRS232_TxISRHandler (void)
{
}


/*
*********************************************************************************************************
*                                      ProbeRS232_Tx1()
*
* Description: Transmit one byte.
*
* Argument(s): c            The byte to transmit.
*
* Return(s)  : none.
*********************************************************************************************************
*/

void  ProbeRS232_Tx1 (CPU_INT08U c)
{
#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_0)
    U0THR = c;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)
    U1THR = c;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    U2THR = c;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    U3THR = c;
#endif
}


/*
*********************************************************************************************************
*                                      ProbeRS232_TxIntDis()
*
* Description: Disable Tx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*********************************************************************************************************
*/

void  ProbeRS232_TxIntDis (void)
{
#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_0)
    U0IER &= ~DEF_BIT_01;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)
    U1IER &= ~DEF_BIT_01;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    U2IER &= ~DEF_BIT_01;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    U3IER &= ~DEF_BIT_01;
#endif
}


/*
*********************************************************************************************************
*                                      ProbeRS232_TxIntEn()
*
* Description: Enable Tx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*********************************************************************************************************
*/

void  ProbeRS232_TxIntEn (void)
{
#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_0)
    U0IER |= DEF_BIT_01;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)
    U1IER |= DEF_BIT_01;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    U2IER |= DEF_BIT_01;
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    U3IER |= DEF_BIT_01;
#endif
}