probe_rs232c.c

来自「ucos 移植 stm32 在iar5.2通过运行良好」· C语言 代码 · 共 586 行 · 第 1/2 页

                                                                /* 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.
*
* Caller(s)   : This is an ISR.
*
* Note(s)     : (1) If this port is used in an RTOS, the interrupt entrance/exit procedure should be
*                   performed by the ISR that calls this handler.
*********************************************************************************************************
*/

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


#if   (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_1)
    usart = USART1;
#elif (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_2)
    usart = USART2;
#elif (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_3)
    usart = USART3;
#else
    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.                 */
    }
}

/*
*********************************************************************************************************
*                                      ProbeRS232_RxISRHandler()
*
* Description : Handle Rx interrupts.
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : This is an ISR.
*
* Note(s)     : (1) This function is empty because receive interrupts are handled by ProbeRS232_RxTxISRHandler().
*********************************************************************************************************
*/

void  ProbeRS232_RxISRHandler (void)
{
}


/*
*********************************************************************************************************
*                                        ProbeRS232_RxIntDis()
*
* Description : Disable Rx interrupts.
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : Application.
*
* Note(s)     : (1) The application should call this function to stop communication.
*********************************************************************************************************
*/

void  ProbeRS232_RxIntDis (void)
{
#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_1)
    USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
#endif

#if (PROBE_RS232_CFG_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.
*
* Caller(s)   : Application.
*
* Note(s)     : (1) The application should call this function to start communication.
*********************************************************************************************************
*/

void  ProbeRS232_RxIntEn (void)
{
#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_1)
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
#endif

#if (PROBE_RS232_CFG_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.
*
* Caller(s)   : This is an ISR.
*
* Note(s)     : This function is empty because transmit 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.
*
* Caller(s)   : ProbeRS232_TxHandler().
*
* Note(s)     : none.
*********************************************************************************************************
*/

void  ProbeRS232_Tx1 (CPU_INT08U c)
{
#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_1)
    USART_SendData(USART1, c);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_2)
    USART_SendData(USART2, c);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_3)
    USART_SendData(USART3, c);
#endif
}


/*
*********************************************************************************************************
*                                        ProbeRS232_TxIntDis()
*
* Description : Disable Tx interrupts.
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : ProbeRS232_TxHandler().
*
* Note(s)     : none.
*********************************************************************************************************
*/

void  ProbeRS232_TxIntDis (void)
{
#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_1)
    USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
#endif

#if (PROBE_RS232_CFG_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.
*
* Caller(s)   : ProbeRS232_TxStart().
*
* Note(s)     : none.
*********************************************************************************************************
*/

void  ProbeRS232_TxIntEn (void)
{
#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_1)
    USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_2)
    USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
#endif

#if (PROBE_RS232_CFG_COMM_SEL == PROBE_RS232_UART_3)
    USART_ITConfig(USART3, USART_IT_TXE, ENABLE);
#endif
}


/*
*********************************************************************************************************
*                                              ENABLE END
*
* Note(s) : See 'ENABLE  Note #1'.
*********************************************************************************************************
*/

#endif