oncealarm.c

ADI公司blackfin DSP开发板BF533 EZ-KIT LITE附带的全部原代码

/* system service include file */
#include <services/services.h>		

/* real time clock service include file */
#include <services/rtc/adi_rtc.h>		

/* system time include file */
#include <time.h>

/* initialization 'sizings' */
#include "adi_ssl_init.h" 


/**************************************************************

 Below are masks that are OR's into the final result, to 
 determine what specific things may have failed.
 
***************************************************************/
 
#define ADI_TEST_SUCCESSFUL           0
#define ADI_TEST_SSL_INIT_FAILED      0x01
#define ADI_TEST_SET_DATETIME_FAILED  0x04
#define ADI_TEST_GET_DATETIME_FAILED  0x08
#define ADI_TEST_DATETIME_WRONG       0x10
#define ADI_TEST_SSL_TERMINATE_FAILED 0x40


volatile static u32 OnceAlarmCompleteFlag, SecondsCompleteFlag;


/* Callback function  */

static void RTCCallback(void *ClientHandle, u32  Event, void *pArg)	
{
    
    switch ( (u32)Event ) 
    {

    	/* one second periodic interrupt */    	
    	case ADI_RTC_EVENT_SECONDS:  
    	{
           SecondsCompleteFlag = 1;
           adi_rtc_RemoveCallback(ADI_RTC_EVENT_SECONDS );           	        
           break;
    	}  
         /* one minute periodic interrupt */  
        case ADI_RTC_EVENT_MINUTES :                 
           break;
           
        /*  hourly periodic interrupt */
        case ADI_RTC_EVENT_HOURS:            
            break;
               
        /* daily periodic interrupt */
        case ADI_RTC_EVENT_DAYS:             
             break;
            
        /* stopwatch countdown timeout event */              
        case ADI_RTC_EVENT_STOPWATCH:        
            break;

        /*  time of day, daily alarm  */
        case ADI_RTC_EVENT_EACH_DAY_ALARM: 
            break;
            
        /*  day & time once only alarm  */
        case ADI_RTC_EVENT_ONCE_ALARM:          
        {
            adi_rtc_RemoveCallback( ADI_RTC_EVENT_ONCE_ALARM );
            OnceAlarmCompleteFlag = 1;         
            break;
        } 
        
         /*  pending register writes complete */
        case ADI_RTC_EVENT_WRITES_COMPLETE:  
            break;

        default:
            break;	
    }
    return;
}



/* **************************************************************
 *
 * Main Function of the Application
 *
 * **************************************************************/

main()
{	
    /* variables for storing result codes */
    u32  TmpResult, FinalResult, NumSeconds;
	
    /* argument for saving critical region data */
    void  *critical_region_arg = 0;
	
    /* "tm" structure (see 'time.h') */
    struct tm DateTime;
    
    /* A pointer to the structure */
    struct tm*  pDateTime = &DateTime;     
    
    /* Start by assuming success. **/
	    	
    FinalResult = ADI_TEST_SUCCESSFUL;
    
    /* Initialize the system services. */	
    /* Use temporary result code to check whether system services */
    /* were successfully initialized - see 'ssl_init.c' */
	
    if(( TmpResult = adi_ssl_Init() ) != 0 )
    {
        /* Add a specific error code to the final result */		
        FinalResult |= ADI_TEST_SSL_INIT_FAILED;
    }
	

    if( FinalResult == 0 )
    {
        /* set up the fields of the date/time structure for any time */
        pDateTime->tm_sec = 33;    /* 33 seconds */
        pDateTime->tm_min = 22;    /* 22 minutes */
        pDateTime->tm_hour = 9;    /* hour 9 */
        pDateTime->tm_mday = 1;
        pDateTime->tm_mon = 1;
        pDateTime->tm_year = 1900;  
    
        /* For the most predictable performance, synchronize the write to the 1 Hz "tick".  */
        
        /* zero this flag */
        SecondsCompleteFlag = 0;	
	 
        /* install a callback, that will set the flag */
        adi_rtc_InstallCallback(ADI_RTC_EVENT_SECONDS, (void*)NULL, NULL, RTCCallback, (void*)NULL );
		
        /* and set a breakpoint in the callback */
        while( SecondsCompleteFlag == 0 );	 


        /* set the date and time */    
        if( TmpResult = adi_rtc_SetDateTime( &DateTime ) != 0)
        {
	    /* Add a specific error code to the final result */	    	
            FinalResult |= ADI_TEST_SET_DATETIME_FAILED;
        }   

        /* synchronize again - zero this flag */
        SecondsCompleteFlag = 0;	
	
        /* install a callback, that will set the flag */
        adi_rtc_InstallCallback(ADI_RTC_EVENT_SECONDS, (void*)NULL, NULL, RTCCallback, (void*)NULL );
	
	
        /* and set a breakpoint in the callback */
       while( SecondsCompleteFlag == 0 );


        /* read the date and time */ 
        /* pass a pointer to the second tm structure */        
        if(( TmpResult = adi_rtc_GetDateTime( pDateTime )) != 0 )
        {
            /* Add a specific error code to the final result */	    	
            FinalResult |= ADI_TEST_GET_DATETIME_FAILED;
        }
        else
        {
            /* okay to proceed; use the current time to set an alarm  */	
            /* ALarm will happen in 5 seconds */
            NumSeconds = (pDateTime->tm_sec)+5;
	
            /* if we overlapped */
            if( NumSeconds >= 60 )
            {        
                /* set seconds accordingly */
                pDateTime->tm_sec = NumSeconds-60;
                /* use var temporarily to add one to minutes */
                NumSeconds = pDateTime->tm_min+1;
		
                /* if minutes wrapped around */
                if( NumSeconds >= 60 )
                {
                    /* wrap it around in the struct */
                    pDateTime->tm_min = 0;
	    	
                    /* use variable temporarily to add one to hours */
                    NumSeconds = pDateTime->tm_hour+1;
	        
                    /* if hours wrapped around */
                    if( NumSeconds == 24 )
                    {
                        /* wrap it around in the struct */
                        pDateTime->tm_hour = 0;
                    }
                    /* no need to check for midnight */
                }
            }
            else
            {
    	        pDateTime->tm_sec = NumSeconds;
            }
        }
    }        
 
	
    /* zero the flag */
    OnceAlarmCompleteFlag = 0;
	
	
    /* install a once alarm to happen in three seconds */
    adi_rtc_InstallCallback(ADI_RTC_EVENT_ONCE_ALARM, (void*)NULL, NULL, RTCCallback, (void*)pDateTime );
	

    /* callback removes the callback */
    while( OnceAlarmCompleteFlag == 0 );
	

    /* Terminate the system services */
    if(( TmpResult = adi_ssl_Terminate()) != 0 )
    {
        /* Add a specific error code to the final result */  
        FinalResult |= ADI_TEST_SSL_TERMINATE_FAILED;
    }

    /* Here, examine the value of "FinalResult" and see the definitions at
       the beginning of this file which describe result, 0 means no errors. */
    while( 1 )
    {
    	TmpResult = FinalResult ;
    }
}