probe_rs232c.c

编译环境是 iar EWARM ,STM32 下的UCOSII

    BSP_PeriphEn(BSP_PERIPH_ID_IOPD);
    BSP_PeriphEn(BSP_PERIPH_ID_AFIO);
    GPIO_PinRemapConfig(GPIO_FullRemap_USART3, ENABLE);

                                                                /* Configure GPIOD.8 as push-pull                       */
    gpio_init.GPIO_Pin   = GPIO_Pin_8;
    gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
    gpio_init.GPIO_Mode  = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOD, &gpio_init);

                                                                /* Configure GPIOD.9 as input floating                  */
    gpio_init.GPIO_Pin   = GPIO_Pin_9;
    gpio_init.GPIO_Mode  = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOD, &gpio_init);

#else
    BSP_PeriphEn(BSP_PERIPH_ID_IOPB);

                                                                /* Configure GPIOB.10 as push-pull                      */
    gpio_init.GPIO_Pin   = GPIO_Pin_10;
    gpio_init.GPIO_Speed = GPIO_Speed_50MHz;
    gpio_init.GPIO_Mode  = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOB, &gpio_init);

                                                                /* Configure GPIOB.11 as input floating                 */
    gpio_init.GPIO_Pin   = GPIO_Pin_11;
    gpio_init.GPIO_Mode  = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOB, &gpio_init);
#endif

                                                                /* ------------------ SETUP USART3 -------------------- */
    USART_Init(USART3, &usart_init);
    USART_ClockInit(USART3, &usart_clk_init);
    USART_Cmd(USART3, ENABLE);

    BSP_IntVectSet(BSP_INT_ID_USART3, ProbeRS232_RxTxISRHandler);
    BSP_IntEn(BSP_INT_ID_USART3);
#endif
}

/*
*********************************************************************************************************
*                                     ProbeRS232_RxTxISRHandler()
*
* Description: Handle Rx and Tx interrupts.
*
* Argument(s): none.
*
* Return(s)  : none.
*
* Note(s)    : (1) This ISR handler handles the interrupt entrance/exit as expected by
*                  by uC/OS-II v2.85.  If you are using a different RTOS (or no RTOS), then this
*                  procedure may need to be modified or eliminated.  However, the logic in the handler
*                  need not be changed.
*********************************************************************************************************
*/

void  ProbeRS232_RxTxISRHandler (void)
{
    USART_TypeDef  *usart;
    CPU_INT08U      rx_data;
    CPU_SR          cpu_sr;


    CPU_CRITICAL_ENTER();                                       /* Tell uC/OS-II that we are starting an ISR            */
    OSIntNesting++;
    CPU_CRITICAL_EXIT();


#if   (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_1)
    usart = USART1;
#elif (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    usart = USART2;
#elif (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    usart = USART3;
#else
    OSIntExit();
    return;
#endif

    if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
        rx_data = USART_ReceiveData(usart) & 0xFF;              /* Read one byte from the receive data register         */
        ProbeRS232_RxHandler(rx_data);

        USART_ClearITPendingBit(usart, USART_IT_RXNE);          /* Clear the USART1 Receive interrupt                   */
    }

    if (USART_GetITStatus(usart, USART_IT_TXE) != RESET) {
        ProbeRS232_TxHandler();

        USART_ClearITPendingBit(usart, USART_IT_TXE);           /* Clear the USART1 transmit interrupt                  */
    }

    OSIntExit();                                                /* Tell uC/OS-II that we are leaving the ISR            */
}

/*
*********************************************************************************************************
*                                    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_1)
    USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    USART_ITConfig(USART3, USART_IT_RXNE, DISABLE);
#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_1)
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
#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_1)
    USART_SendData(USART1, c);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    USART_SendData(USART2, c);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    USART_SendData(USART3, 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_1)
    USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    USART_ITConfig(USART3, USART_IT_TXE, DISABLE);
#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_1)
    USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
#endif

#if (PROBE_RS232_COMM_SEL == PROBE_RS232_UART_3)
    USART_ITConfig(USART3, USART_IT_TXE, ENABLE);
#endif
}