extint02.c

实现功能ATmega单片机上处理GSM模块的数据

#include <avr/io.h>
#include <avr/signal.h>
#include <avr/interrupt.h>

#include "global.h"
#include "extint.h"

volatile static voidFuncPtr ExtIntFunc[EXTINT_NUM_INTERRUPTS];

void extintInit(void)
{
	u08 intNum;
	for(intNum=0; intNum<EXTINT_NUM_INTERRUPTS; intNum++)
		extintDetach(intNum);

}

void extintConfigure(u08 interruptNum, u08 configuration)
{
	if(interruptNum == EXTINT0)
	{
		MCUCR &= ~((1<<ISC01) | (1<<ISC00));
		MCUCR |= configuration;
	}
	#ifdef SIG_INTERRUPT1
	else if(interruptNum == EXTINT1)
	{
		MCUCR &= ~((1<<ISC11) | (1<<ISC10));
		MCUCR |= configuration<<2;
	}
	#endif
	#ifdef SIG_INTERRUPT2
	else if(interruptNum == EXTINT2)
	{
		if(configuration == EXTINT_EDGE_RISING)
			sbi(MCUCSR, ISC2);
		else
			cbi(MCUCSR, ISC2);
	}
	#endif
}

void extintAttach(u08 interruptNum, void (*userHandler)(void) )
{
	if(interruptNum < EXTINT_NUM_INTERRUPTS)
	{
		ExtIntFunc[interruptNum] = userHandler;
	}
}

void extintDetach(u08 interruptNum)
{
	if(interruptNum < EXTINT_NUM_INTERRUPTS)
	{
		ExtIntFunc[interruptNum] = 0;
	}
}

//! Interrupt handler for INT0
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT0)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT0])
		ExtIntFunc[EXTINT0]();
}

#ifdef SIG_INTERRUPT1
//! Interrupt handler for INT1
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT1)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT1])
		ExtIntFunc[EXTINT1]();
}
#endif

#ifdef SIG_INTERRUPT2
//! Interrupt handler for INT2
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT2)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT2])
		ExtIntFunc[EXTINT2]();
}
#endif

#ifdef SIG_INTERRUPT3
//! Interrupt handler for INT3
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT3)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT3])
		ExtIntFunc[EXTINT3]();
}
#endif

#ifdef SIG_INTERRUPT4
//! Interrupt handler for INT4
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT4)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT4])
		ExtIntFunc[EXTINT4]();
}
#endif

#ifdef SIG_INTERRUPT5
//! Interrupt handler for INT5
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT5)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT5])
		ExtIntFunc[EXTINT5]();
}
#endif

#ifdef SIG_INTERRUPT6
//! Interrupt handler for INT6
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT6)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT6])
		ExtIntFunc[EXTINT6]();
}
#endif

#ifdef SIG_INTERRUPT7
//! Interrupt handler for INT7
EXTINT_INTERRUPT_HANDLER(SIG_INTERRUPT7)
{
	// if a user function is defined, execute it
	if(ExtIntFunc[EXTINT7])
		ExtIntFunc[EXTINT7]();
}
#endif