os_viewc.c

uCOSII 在LPC3180上的移植代码

/*
*********************************************************************************************************
*                                       Enable Rx Interrupts
*********************************************************************************************************
*/

void  OSView_RxIntEn (void)
{
#if OS_VIEW_COMM_SEL == OS_VIEW_UART_5
    U5IER     |= BIT0;                                                      /* Enable Receive Interrupts                            */
#endif

#if OS_VIEW_COMM_SEL == OS_VIEW_UART_7
    HSU7_CTRL |= BIT6;                                                      /* Enable Receive Interrupts                            */
#endif
}

/*
*********************************************************************************************************
*                                 Rx Communication handler for uC/OS-View
*
* Description: This function is called by OSView_RxISR (see OS_VIEWa.ASM) to process a received
*              character interrupt.
*
* Note(s)    : This adaptation of uC/OS-View assumes that a 'combined' interrupt is generated by the UART
*              and thus this function is not needed.
*********************************************************************************************************
*/

void  OSView_RxISRHandler (void)
{
}

/*
*********************************************************************************************************
*                                Rx/Tx Communication handler for uC/OS-View
*
* Description: This function is NOT called because the M16C has a separate Rx and Tx ISR.
*********************************************************************************************************
*/

void  OSView_RxTxISRHandler (void)
{
    volatile  INT8U  rx_data;
    volatile  INT8U  lsr;
    volatile  INT8U  iir;


#if OS_VIEW_COMM_SEL == OS_VIEW_UART_5
    iir = U5IIR & 0x0F;
    while (iir != 1) {
        switch (iir) {
            case  2:                                                        /* Transmitted character?                               */
                 OSView_TxHandler();                                        /* Call the Tx handler, Int. cleared by read of U5IIR   */
                 break;

            case  4:                                                        /* Received a character?                                */
                 rx_data = U5RBR;                                           /* Read the data. Int. cleared by read of U5RBR         */
                 OSView_RxHandler(rx_data);                                 /* Call the generic Rx handler                          */
                 break;

            case  6:                                                        /* Receive Line Status interrupt?                       */
                 lsr     = U5LSR;                                           /* Read the Line Status Register to clear the interrupt */
                 break;

            case 12:                                                        /* CTI interrupt?                                       */
                 rx_data = U5RBR;                                           /* Read the data register to clear the interrupt        */
                 break;
        }

        iir = U5IIR & 0x0F;
    }
#endif

#if OS_VIEW_COMM_SEL == OS_VIEW_UART_7
    iir = (HSU7_IIR & 0x3F);                                                /* Read the interrupt status register                   */

    if ((iir & BIT0) == BIT0) {                                             /* Tx complete interrupt                                */
        HSU7_IIR |= BIT0;                                                   /* Clear the Interrupt source                           */
        OSView_TxHandler();                                                 /* Call the Tx handler, Int. cleared by read of U5IIR   */
    }

    if ((iir & BIT1) == BIT1) {                                             /* If FIFO is below threshhold                          */
        while ((HSU7_LEVEL & 0xFF) > 0) {                                   /* Read bytes from FIFO while there is data present     */
            rx_data = (HSU7_RX & 0xFF);                                     /* Read the data. Int. cleared by read of U5RBR         */
            OSView_RxHandler(rx_data);                                      /* Call the generic Rx handler                          */
        }
    }

    if ((iir & BIT3) == BIT3) {                                             /* Framing Error                                        */
        HSU7_IIR |= BIT3;                                                   /* Clear the Interrupt source                           */
    }

    if ((iir & BIT4) == BIT4) {                                             /* Break Interrupt                                      */
        HSU7_IIR |= BIT4;                                                   /* Clear the Interrupt source                           */
    }

    if ((iir & BIT5) == BIT5) {                                             /* Overrun Interrupt                                    */
        HSU7_IIR |= BIT5;                                                   /* Clear the Interrupt source                           */
    }
#endif
}

/*$PAGE*/
/*
*********************************************************************************************************
*                                      Communication for uC/OS-View
*
* Description: Send 1 character to COM Port
*********************************************************************************************************
*/

void  OSView_Tx1 (INT8U c)
{
#if OS_VIEW_COMM_SEL == OS_VIEW_UART_5
    U5THR   = c;
#endif

#if OS_VIEW_COMM_SEL == OS_VIEW_UART_7
    HSU7_TX = c;
#endif
}

/*$PAGE*/
/*
*********************************************************************************************************
*                                       Disable Tx Interrupts
*********************************************************************************************************
*/

void  OSView_TxIntDis (void)
{
#if OS_VIEW_COMM_SEL == OS_VIEW_UART_5
    U5IER     &= ~BIT1;                                                     /* Disable UART5 Tx interrupts                          */
#endif

#if OS_VIEW_COMM_SEL == OS_VIEW_UART_7
    HSU7_CTRL &= ~BIT5;                                                     /* Disable UART7 Tx interrupts                          */
#endif
}

/*
*********************************************************************************************************
*                                       Enable Tx Interrupts
*********************************************************************************************************
*/

void  OSView_TxIntEn (void)
{
#if OS_VIEW_COMM_SEL == OS_VIEW_UART_5
    U5IER     |= BIT1;                                                      /* Enable Tx interrupts                                 */
#endif

#if OS_VIEW_COMM_SEL == OS_VIEW_UART_7
    HSU7_CTRL |= BIT5;                                                      /* Enable Tx interrupts                                 */
#endif
}

/*
*********************************************************************************************************
*                                 Tx Communication handler for uC/OS-View
*                                            (PORT SPECIFIC)
*
* Description: Handle transmission of a character
*
* Note(s)    : 1) This function is called by OSView_RxISR (see OS_VIEWa.ASM)
*              2) This adaptation of uC/OS-View assumes that a 'combined' interrupt is generated by the
*                 UART and thus this function is not needed.
*********************************************************************************************************
*/

void  OSView_TxISRHandler (void)
{
}