stm32+CC3000移植到ucosii之外部中断服务函数

说明：CC3000初始化要等ucosii操作系统跑起来后再执行，否则进不了外部中断函数。

/*
*********************************************************************************************************
*                                                main()
*
* Description : This is the standard entry point for C code.  It is assumed that your code will call
*               main() once you have performed all necessary initialization.
*
* Argument(s) : none.
*
* Return(s)   : none.
*********************************************************************************************************
*/
int  main (void)
{
    CPU_INT08U  os_err;


    BSP_IntDisAll();                                            /* Disable all ints until we are ready to accept them.  */
		
    OSInit();                                                   /* Initialize "uC/OS-II, The Real-Time Kernel".         */

    os_err = OSTaskCreateExt((void (*)(void *)) App_TaskStart,  /* Create the start task.                               */
                             (void          * ) 0,
                             (OS_STK        * )&App_TaskStartStk[APP_TASK_START_STK_SIZE - 1],
                             (INT8U           ) APP_TASK_START_PRIO,
                             (INT16U          ) APP_TASK_START_PRIO,
                             (OS_STK        * )&App_TaskStartStk[0],
                             (INT32U          ) APP_TASK_START_STK_SIZE,
                             (void          * )0,
                             (INT16U          )(OS_TASK_OPT_STK_CLR | OS_TASK_OPT_STK_CHK));

#if (OS_TASK_NAME_SIZE >= 11)
    OSTaskNameSet(APP_TASK_START_PRIO, (CPU_INT08U *)"Start Task", &os_err);
#endif

    OSStart();                                                  /* Start multitasking (i.e. give control to uC/OS-II).  */

    return (0);
}

/*
*********************************************************************************************************
*                                          App_TaskStart()
*
* Description : The startup task.  The uC/OS-II ticker should only be initialize once multitasking starts.
*
* Argument(s) : p_arg       Argument passed to 'App_TaskStart()' by 'OSTaskCreate()'.
*
* Return(s)   : none.
*
* Caller(s)   : This is a task.
*
* Note(s)     : none.
*********************************************************************************************************
*/
static  void  App_TaskStart (void *p_arg)
{
    (void)p_arg;
	
    BSP_Init(); /* Initialize BSP functions. */
    OS_CPU_SysTickInit(); /* Initialize the SysTick. */

#if (OS_TASK_STAT_EN > 0)
    OSStatInit(); /* Determine CPU capacity. */
#endif

    while (DEF_TRUE) {
		
	OSTimeDlyHMSM(0, 0, 0, 1000);
 
    }
}

/*
*********************************************************************************************************
*                                               BSP_Init()
*
* Description : Initialize the Board Support Package (BSP).
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : Application.
*
* Note(s)     : (1) This function SHOULD be called before any other BSP function is called.
*********************************************************************************************************
*/

void  BSP_Init (void)
{
    BSP_SystemInit();   /* Initialize system clock */
    delay_init();  
	
#if (APP_DEBUG_EN == DEF_ENABLED)
    BSP_USART_Init();   /* Initialize Debug Usart */
#endif

#if (APP_KEY_EN == DEF_ENABLED)
    Key_Init();         /* Initialize ADCs & DMA for Keys */
#endif

#if (APP_WIFI_EN == DEF_ENABLED)	
    CC3000_WLAN_Setup();	// Initialize Board and CC3000
#endif
}

//CC3000使能外部中断
void WlanInterruptEnable(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	EXTI_InitTypeDef EXTI_InitStructure;

	/* CC3000_WIFI_INT_GPIO and AFIO Peripheral clock enable */
	RCC_APB2PeriphClockCmd(CC3000_WIFI_INT_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE);

	/* Configure CC3000_WIFI pins: Interrupt */
	GPIO_InitStructure.GPIO_Pin = CC3000_WIFI_INT_GPIO_PIN;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_Init(CC3000_WIFI_INT_GPIO_PORT, &GPIO_InitStructure);

	/* Select the CC3000_WIFI_INT GPIO pin used as EXTI Line */
	GPIO_EXTILineConfig(CC3000_WIFI_INT_EXTI_PORT_SOURCE, CC3000_WIFI_INT_EXTI_PIN_SOURCE );

	/* Clear the EXTI line pending flag */
	EXTI_ClearFlag(CC3000_WIFI_INT_EXTI_LINE );

	/* Configure and Enable CC3000_WIFI_INT EXTI line */
	EXTI_InitStructure.EXTI_Line = CC3000_WIFI_INT_EXTI_LINE;
	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
	EXTI_InitStructure.EXTI_LineCmd = ENABLE;
	EXTI_Init(&EXTI_InitStructure);

	BSP_IntVectSet(BSP_INT_ID_EXTI9_5, EXTI9_5_IRQHandler);
	BSP_IntPrioSet(BSP_INT_ID_EXTI9_5, EXTI9_5_IRQ_PRIORITY);
        BSP_IntEn(BSP_INT_ID_EXTI9_5);
}

//CC3000 外部中断服务函数
void EXTI9_5_IRQHandler(void)
{
    if (EXTI_GetITStatus(CC3000_WIFI_INT_EXTI_LINE) != RESET)	//SPI irq
    {   
	SPI_IRQ();
        EXTI_ClearITPendingBit(CC3000_WIFI_INT_EXTI_LINE);
    }
}