powerdemointhndlers.c

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

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

Copyright(c) 2005 Analog Devices, Inc. All Rights Reserved. 

This software is proprietary and confidential.  By using this software you agree
to the terms of the associated Analog Devices License Agreement.  

Description:
		The Interrupt Handlers for the PowerDemo sample program. Both handlers are
		defined according to the requirements for the Interrupt Manager.
			
*********************************************************************************/#include "PowerDemo.h"
#include "PowerDemo.h"

/////////////////////////
// External Variables  //
/////////////////////////
extern u16 CurrentDisplay;
extern u32 CurrentPowerState;


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

	Function:		PushButtonCallback

	Description:	Services the push button callbacks
	
***********************************************************************/	
void PushButtonCallback(
	void 	*ClientHandle,
	u32		Event,
	void 	*pArg)
{	
	
	u32	Button;
#if defined(__ADSP_EDINBURGH__)	
	adi_int_SICDisable(ADI_INT_PFA);
#elif defined(__ADSP_BRAEMAR__)	
	adi_int_SICDisable(ADI_INT_PORTFG_A);
#endif			
	// ClientHandle is the button that was pushed
	Button = (u32)ClientHandle;
	
	switch (Button) {
	/*	***************************************************************************
	 *  Buttons 4 & 5 test the SDRAM configuration:
	 *  Button 4 writes to SDRAM and turns on LED 4
	 *  Button 5 reads and validates SDRAM if already written to (i.e. LED 4 is on) 
	 *  and turns on LED 4 if successful
	 *	***************************************************************************/	
		case EZ_FIRST_BUTTON:
			WriteSDRAM();
			ezSetDisplay(CurrentDisplay);
			ezTurnOnLED(EZ_FIRST_LED);
			CurrentDisplay = ezGetDisplay();
			break;
		case EZ_FIRST_BUTTON + 1:
			ezSetDisplay(CurrentDisplay);
			if( ezIsLEDOn(EZ_FIRST_LED) && ReadSDRAM() )
				ezTurnOffLED(EZ_FIRST_LED);
			else
				ezErrorCheck(0);
			CurrentDisplay = ezGetDisplay();
			break;
	/*	***************************************************************************
	 *  Button 6 Cycles down the Power Modes:
	 *  First Press -> Active PLL enabled
	 *  Second Press -> Active PLL disabled
	 *  Third Press -> Sleep (awaits RTC wakeup)
	 *  Fourth Press -> After returns from Sleep, Goes into Deep Sleep 
	 *                  (also awaits RTC wakeup)
	 *	***************************************************************************/	
		case EZ_FIRST_BUTTON + 2:
			TogglePowerMode();
			break;
	/*	***************************************************************************
	 *  Button 7 Cycles Voltage Levels:
	 *	***************************************************************************/	
		case EZ_FIRST_BUTTON + 3:
			ToggleVoltage();
			break;
	}
#if defined(__ADSP_EDINBURGH__)	
	adi_int_SICEnable(ADI_INT_PFA);
#elif defined(__ADSP_BRAEMAR__)	
	adi_int_SICEnable(ADI_INT_PORTFG_A);
#endif			
}



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

	Function:		RealTimeClockHandler

	Description:	Services the RTC Stopwatch interrupt event.
	
***********************************************************************/	
ADI_INT_HANDLER(RealTimeClockHandler)
{	
	u16 tmpDisplay;
	
	// Check to see if the RTC caused this interrupt, return if not
	if ( !adi_int_SICInterruptAsserted(ADI_INT_RTC) )
		return ADI_INT_RESULT_NOT_PROCESSED;
		
	*pRTC_ISTAT = CLEAR_RTC_IRQS;	// Acknowledge RTC Interrupt Request
	*pRTC_SWCNT = 0x0005;			// Reset Stopwatch for 5 Seconds

	// Check for awake from Sleep or Deep Sleep and act accordingly
	if ( CurrentPowerState==3 || CurrentPowerState==5 ) 
	{
		// Go to full-on
		adi_pwr_SetPowerMode(ADI_PWR_MODE_FULL_ON);
		
		// Blink all LED's four times to signal transition
		tmpDisplay = CurrentDisplay;
		CurrentDisplay = ALL_LEDS;
		BlinkLEDs(4,ALL_LEDS);
		CurrentDisplay = tmpDisplay;
		
		// adjust LED's to reflect correct status
		if (CurrentPowerState==3)
			// simply increment state to indicate
			// that next button press is to invoke Deep Sleep
			CurrentPowerState++;
		else {
			// Access SDRAM to take it out of self-refresh
			AccessSDRAM();
			// Set Power State and Power Mode to the Full-on state
            ezTurnOnLED(EZ_FIRST_LED+1);
			ezTurnOnLED(EZ_FIRST_LED+2);
			ezTurnOnLED(EZ_FIRST_LED+3);
			CurrentDisplay |= ezGetDisplay();
			CurrentPowerState=0;
		}

	}
	
	return ADI_INT_RESULT_PROCESSED;
}