spptimer.c

ti-Chipcon CC1010 1G以下Soc源码库。包括rf,powermodes,clockmodes,flashRW,interrupts,timer,pwm,uart...所有底层驱动源码

/*****************************************************************************
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 *      ***        ***                                                       *
 *      ***   +++   ***                                                      *
 *      ***   + +   ***                                                      *
 *      ***   +                            CHIPCON CC1010                    *
 *      ***   + +   ***                      CUL - spp                       *
 *      ***   +++   ***                                                      *
 *      ***       ***                                                        *
 *       ***********                                                         *
 *        *********                                                          *
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 *****************************************************************************
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 * Author:              JOL                                                  *
 *****************************************************************************
 * Revision history:                                                         *
 *                                                                           *
 * $Log: sppTimer.c,v $
 * Revision 1.2  2002/11/18 13:39:23  tos
 * Initialisation of pointers to timer callback functions before timer
 * interrupt is started/enabled.
 *
 * Revision 1.1  2002/10/14 12:27:35  tos
 * Initial version in CVS.
 *
 *                                                                           *
 ****************************************************************************/

#include <chipcon/sppInternal.h>

// Internal variables
pCBF xdata sppCBFSM;	
word* xdata sppCNTFSM;
pCBF xdata sppCB0;	
word* xdata sppCNT0;
pCBF xdata sppCB1;	
word* xdata sppCNT1;
byte xdata sppCBCount;
word xdata sppTime;


//----------------------------------------------------------------------------
//  void sppStartTimer (void)
//
//  Description:
//		Run timer3 with a period of 10 msecs.
//
//	Arguments:
//		word clkFreq
//			The XOSC clock frequency in kHz.
//----------------------------------------------------------------------------
void sppStartTimer (word clkFreq) {
	sppTime = 0;
	sppCBFSM = NULL;
	sppCB0 = NULL;
	sppCB1 = NULL;
	INT_SETFLAG (INUM_TIMER3, INT_CLR);
	halConfigTimer23(TIMER3 | TIMER23_INT_TIMER, 10000, clkFreq);
	TIMER3_RUN(TRUE);
} // sppStartTimer




//----------------------------------------------------------------------------
//  void sppSetTimerCB (void)
//
//	Description:
//		Add timer callback
//
//	Arguments:
//		byte cb
//			Callback index - use SPP_CUSTOM_0_TIMER	or SPP_CUSTOM_1_TIMER
//			The SPP finite state machine uses SPP_FSM_TIMER
//		void *pF
//			Pointer to the function to call
//		word *pTicks
//			The timeout in 10s of msecs
//
//	NOTE: *pTicks will be decremented by the Timer 3 interrupt 
//----------------------------------------------------------------------------
void sppSetTimerCB (byte cb, void (*pF) (), word *pTicks) {
	INT_ENABLE (INUM_TIMER3, INT_OFF);
	if (cb == SPP_FSM_TIMER) {
		sppCBFSM = pF;
		sppCNTFSM = pTicks;
	} else if (cb == SPP_CUSTOM_0_TIMER) {
		sppCB0 = pF;
		sppCNT0 = pTicks;
	} else if (cb == SPP_CUSTOM_1_TIMER) {
		sppCB1 = pF;
		sppCNT1 = pTicks;
	}
	INT_ENABLE (INUM_TIMER3, INT_ON);
} // sppSetTimerCB




//----------------------------------------------------------------------------
//  word sppGetTime (void)
//
//	Description:
//		Returns the value of the 10-msec counter, which is started by 
//		sppSetupRF(...)
//
//	Return value:
//		The current time in 10s of msecs
//----------------------------------------------------------------------------
word sppGetTime (void) {
	word temp;
	INT_ENABLE (INUM_TIMER3, INT_OFF);
	temp = sppTime;
	INT_ENABLE (INUM_TIMER3, INT_ON);
	return temp;
} // sppGetTime




//----------------------------------------------------------------------------
//  Timer 3 interrupt service routine:
//----------------------------------------------------------------------------
void TIMER3_ISR () interrupt INUM_TIMER3 {
	INT_SETFLAG (INUM_TIMER3, INT_CLR);

	if (*sppCNTFSM && !--(*sppCNTFSM)) {
		if (sppCBFSM != NULL) sppCBFSM();
	}

	if (*sppCNT0 && !--(*sppCNT0)) {
		if (sppCB0 != NULL) sppCB0();
	}

	if (*sppCNT1 && !--(*sppCNT1)) {
		if (sppCB1 != NULL) sppCB1();
	}
	sppTime++;
} // TIMER3_ISR